CAAC四类多旋翼教员口试题库（精华版）第二篇
<h1 style="margin-top:33px;margin-bottom:16px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><strong><span style="font-family: 黑体;font-size: 29px">动力系统（与供电系统分离）</span></strong></h1><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:仿宋;font-size:14px">功能：将电能转化为机械推力</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:仿宋;font-size:14px">组件：</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:仿宋;font-size:14px"><span style="font-family:仿宋">推进单元：无刷电机</span><span style="font-family:仿宋">+螺旋桨（正/反桨配对）</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:仿宋;font-size:14px"><span style="font-family:仿宋">控制单元：电子调速器（</span><span style="font-family:仿宋">ESC）</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:仿宋;font-size:14px"><span style="font-family:仿宋">输出指标：推力（</span><span style="font-family:仿宋">kgf）、响应速度（ms）</span></span></p><h2 style="margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 黑体;font-size: 21px">（一）</span><strong><span style="font-family: 黑体;font-size: 21px">概述</span></strong></h2><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">1．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多旋翼无人机的动力系统由什么组成？分别写出作用？并写出其连接的顺序。</span></strong></h3><p style="line-height:150%"><span style="font-family: 宋体;font-size: 14px">答：</span></p><p style="line-height:150%"><span style="font-family: 宋体;font-size: 14px">(1)动力电池：提供动力电源（目前</span><span style="font-family: 宋体;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">多旋翼无人机</span></span><span style="font-family: 宋体;font-size: 14px">主要的</span><span style="font-family: 宋体;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">动力电源</span></span><span style="font-family: 宋体;font-size: 14px">都采用</span><span style="font-family: 宋体;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">锂聚合物电池</span></span><span style="font-family: 宋体;font-size: 14px">）。</span></p><p style="line-height:150%"><span style="font-family: 宋体;font-size: 14px">(2)电子调速器：调节电机转速（电调的作用：将直流电改变为交流电，部分电机信号线能提供5V的供电给接收机。接收机在为舵机等控制设备供电）。</span></p><p style="line-height:150%"><span style="font-family: 宋体;font-size: 14px">(3)动力电机：带动螺旋桨旋转运动（电机是将电能转化为机械能的部件，多旋翼无人机使用的主流电机，是外转子无刷电机）。</span></p><p style="line-height:150%"><span style="font-family: 宋体;font-size: 14px">(4)螺旋桨：产生升力（螺旋桨是安装在电机上，为多旋翼无人机提供升力的装置，电机仅仅将电能转化为机械能，真正产生升力的部件是螺旋桨）。</span></p><p style="line-height:150%"><span style="font-family: 宋体;font-size: 14px">(5)连接顺序：</span><strong><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">动力电池</span></strong><strong><span style="font-family: Arial;color: rgb(255, 0, 0);font-size: 14px">→</span></strong><strong><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">电调</span></strong><strong><span style="font-family: Arial;color: rgb(255, 0, 0);font-size: 14px">→</span></strong><strong><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">电机</span></strong><strong><span style="font-family: Arial;color: rgb(255, 0, 0);font-size: 14px">→</span></strong><strong><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">螺旋桨</span></strong><span style="font-family: 宋体;font-size: 14px">。</span></p><h2 style="margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 黑体;font-size: 21px">（二）</span><strong><span style="font-family: 黑体;font-size: 21px">关于电机</span></strong></h2><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">1．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">动力电机的主要技术参数有哪些？</span></strong></h3><p style=";text-autospace:none;text-align:justify;text-justify:inter-ideograph;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：规格尺寸；重量；最大功率；工作转速范围；空载</span><span style="font-family:宋体">KV值等。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">2．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">无刷电机的</span><span style="font-family:宋体">KV值的含义、与扭矩的关系，相同尺寸的电机，如何区分KV值的大小？</span></span></strong></h3><p style=";text-autospace:none;text-align:justify;text-justify:inter-ideograph;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：空载情况下，每增加</span><span style="font-family:宋体">1V电压电机每分钟所增加的转数。KV值越大，转数越高，扭矩越小，配小桨；反之，KV值越小，转数越低，扭矩越大，配大桨。</span></span></p><p style=";text-autospace:none;text-align:justify;text-justify:inter-ideograph;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">功率＝扭矩</span><span style="font-family:宋体">×速度，功率不变的情况下，速度越大，扭矩就越低。匝数是指每个线圈的圈数。</span></span></p><p style=";text-autospace:none;text-align:justify;text-justify:inter-ideograph;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">KV值大小与槽数、极数和匝数有关。</span></p><p style=";text-autospace:none;text-align:justify;text-justify:inter-ideograph;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">尺寸相同，</span><span style="font-family:宋体">KV值越低，极数和槽数越多，漆包线粗，匝数少，电流大，扭矩就大，适合带慢速大桨，反之，KV值越高，极数和槽数越少，漆包线细，匝数多，电流小，扭矩就小，适合带快速小桨。电机打开后简单看极数和槽数就可以了。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">3．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">电机的转速和飞行速度的关系？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline"><span style=";font-family:宋体;font-size:14px">答：电机转速越快，动力越强，速度越快。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">4．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">电机的直径与扭矩的关系？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline"><span style=";font-family:宋体;font-size:14px">答：直径越大，扭矩越大。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">5．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">什么是无刷电机？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：顾名思义，无刷电机是相对有刷电机而言，传统电机都是有碳刷的，而无刷电机就是没有碳刷的</span><span style="font-family:宋体">,</span></span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">无刷</span></span><span style=";font-family:宋体;font-size:14px">就是指该类型</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">电机不采用碳刷结构</span></span><span style=";font-family:宋体;font-size:14px">，</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">是一种以电子元件代替碳刷与换向器的电机</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">6．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">有刷电机与无刷电机的各自的特点？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">有刷电机：摩擦大、损耗大、发热大、寿命短、效率低、输出功率小。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">无刷电机</span><span style=";font-family:宋体;font-size:14px">：</span><span style=";font-family:宋体;font-size:14px">无</span><span style=";font-family:宋体;font-size:14px">摩擦</span><span style=";font-family:宋体;font-size:14px">、低干扰、寿命长、维护成本低、效率高</span><span style=";font-family:宋体;font-size:14px">、</span><span style=";font-family:宋体;font-size:14px">性能</span><span style=";font-family:宋体;font-size:14px">好；可靠性高、稳定性好、适应性强、维修与保养简单、耐颠簸</span><span style=";font-family:宋体;font-size:14px">振动</span><span style=";font-family:宋体;font-size:14px">、</span><span style=";font-family:宋体;font-size:14px">噪声</span><span style=";font-family:宋体;font-size:14px">低、震动小、运转平滑、寿命长；无级调速、调速范围广、过载能力强、不产生火花、特别适合爆炸性场所。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">7．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">无刷电机，内、外转子的特点、区别，应用的领域？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">(1) </span><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">外转子扭矩大</span><span style="font-family: 宋体;font-size: 14px">，适合带较大螺旋桨，效率高，应用在各种电动无人机上</span><span style="font-family: 宋体;font-size: 14px">。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">(2) </span><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">内转子转速快</span><span style="font-family: 宋体;font-size: 14px">，适合应用在电动涵道航空模型上。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">8．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">无刷电机是直流还是交流？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px">如果单看电机是交流，如果把电调与电机看作一体则为直流。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">9．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">无刷电机的三根线解释？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：无刷电机的</span><span style="font-family:宋体">3条线，是对应它的U,V,W三相，无刷电机一般都需要配备外部控制器（电调），也就是说控制器的输入端有两根线，接直流电源的正负，输出端有三根线，分别对应无刷电机的U、V、W三相。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">10．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">某外转子电机上面标有</span> <span style="font-family:宋体">2218 2100KV 9T 是什么意思？</span></span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 14px">22 表示该电机定子线圈</span><span style="font-family: 宋体;color: rgb(255, 0, 0);letter-spacing: 0;font-size: 14px">直径</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 14px"><span style="font-family:宋体">为</span><span style="font-family:宋体">22</span></span><span style="font-family: 宋体;font-size: 14px">mm</span><span style="font-family: 宋体;font-size: 14px">。</span></p><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px">18 表示该电机定子线圈</span><span style="font-family: 宋体;color: rgb(255, 0, 0);letter-spacing: -0;font-size: 14px">高度</span><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px"><span style="font-family:宋体">为</span><span style="font-family:宋体">18mm</span></span><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px">。</span></p><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px">2100KV表示</span><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px"><span style="font-family:宋体">电压每升高</span><span style="font-family:宋体">1V，该电机每分钟空转的转速</span></span><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px">增加</span><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px">2100转</span><span style="font-family: 宋体;letter-spacing: -0;font-size: 14px">。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">9T：9匝线圈。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">11．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">电机规格</span> <span style="font-family:宋体">4015 和 2040（扁粗型和细长型电机）各适用于什么方面的无人机？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">答：</span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">4015</span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px"> </span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">是</span><span style="font-family: 宋体;line-height: 150%;color: rgb(255, 0, 0);letter-spacing: -0;font-size: 14px">扁粗型</span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">电机，</span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">低转速、大扭矩</span></span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px"><span style="font-family:宋体">，适用于载重无人机，如植保机。</span><span style="font-family:宋体">2040</span></span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px"> </span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">是</span><span style="font-family: 宋体;line-height: 150%;color: rgb(255, 0, 0);letter-spacing: -0;font-size: 14px">细长型</span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">电机，</span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">高转速、</span></span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">小</span></span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">扭矩</span></span><span style="font-family: 宋体;line-height: 150%;letter-spacing: -0;font-size: 14px">，适用于航模、竞技类无人机。如穿越机。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">12．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">能否使用高</span><span style="font-family:宋体">KV的电机带动远大于适配桨大小的桨，为什么？ </span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">不可以</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">。因为高</span><span style="font-family:宋体">KV的电机相对同级别的低KV电机来说，</span></span><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">转速快但扭力小</span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">，如果使用高</span><span style="font-family:宋体">KV配大桨，要么根本不能正常运转，要么桨转速不够不能离地，要么使电机过烫而烧毁，引发飞行事故。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">13．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">无刷电机如果遇到旋转方向相反，需要换向时应如何处理？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：将电调连接电机的</span><span style="font-family:宋体">3根线其中任意2根反接。（</span></span><span style="font-family: Arial;font-size: 14px">安装电调后，电机转向错误，怎么办？</span><span style=";font-family:宋体;font-size:14px">）</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">14．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多轴无人机使用一段时间后，应对动力电机做哪些检查？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：检查电机</span><span style=";font-family:宋体;font-size:14px">是否有变形、松动，安装角度是否在正确位置，轴承磨损程度。</span></p><h2 style="margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 黑体;font-size: 21px">（三）</span><strong><span style="font-family: 黑体;font-size: 21px"><span style="font-family:黑体">关于电调</span><span style="font-family:黑体">（</span><span style="font-family:Arial">ESC</span><span style="font-family:黑体">）</span></span></strong></h2><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">1．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">电子调速器（</span><span style="font-family:宋体">ESC）的主要技术参数有哪些？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：电压范围</span><span style=";font-family:宋体;font-size:14px">；</span><span style=";font-family:宋体;font-size:14px">持续电流</span><span style=";font-family:宋体;font-size:14px">；</span><span style=";font-family:宋体;font-size:14px">最大电流；输入电压范围；对外供电能力等。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;color:rgb(255,0,0);font-size:14px">2．</span><strong><span style=";font-family:宋体;line-height:150%;color:rgb(255,0,0);font-size:14px"><span style="font-family:宋体">电调（</span><span style="font-family:宋体">ESC）的几个作用？（至少五个）</span></span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：</span></p><p style="margin-right:17px;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px">(1) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">电能转换</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">：</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">直流变交流</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">(将电池的直流电转换为三相交流电)</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><p style="margin-right:17px;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px">(2) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px"><span style="font-family:宋体">充当</span><span style="font-family:宋体">BEC（降压模块）</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">给飞控供电</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><p style="margin-top:0;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;letter-spacing: 1px;font-size: 14px">(3) </span><span style="font-family: 宋体;line-height: 150%;letter-spacing: 1px;font-size: 14px">给</span><span style=";font-family:宋体;line-height:150%;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">电机供电</span></span><span style="font-family: 宋体;line-height: 150%;letter-spacing: 1px;font-size: 14px">。</span></p><p style="margin-right:17px;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px">(4) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">通过</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">改变</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">供电</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">电压调节</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">电机</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">转速</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><p style="margin-right:17px;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)">(5) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">保护功能</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">(过流保护，过热保护，低压保护)</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><p style="margin-right:17px;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px">(6) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">通过</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">改变</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">供电</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">电流调节</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">电机</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">扭矩</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><p style="margin-right:17px;margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)">(7) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">接收</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">和</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">反馈控制信号</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">与电机相连接的三根线，任意对调两根，即可实现电机反转。</span></p><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px"> </span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">3．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">电调（</span><span style="font-family:宋体">ESC）有几根线，分别是做什么用的？</span></span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">电子调速器，控制电机的转速。电调有</span><span style="font-family:宋体">7或8根线。</span></span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">无刷电机</span><span style="font-family:宋体">8根线</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">（</span><span style="font-family:宋体">2根电源线，3根电机驱动线，3根信号控制线），</span></span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">有刷电机</span><span style="font-family:宋体">7根线</span></span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">少</span><span style="font-family:宋体">1根</span></span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px"><span style="font-family:宋体">红色</span> </span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px">+5V</span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px">杜邦（电源）线</span><span style=";font-family:宋体;font-size:14px">）</span><span style=";font-family:宋体;font-size:14px">。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">8根</span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">无刷电机</span><span style=";font-family:宋体;font-size:14px">）：</span><span style=";font-family:宋体;font-size:14px">两根最粗的硅胶线一红一黑连接动力电池，三根较粗的硅胶线连接电机，三根最细的杜邦线连接接收机或飞控。注：杜邦中红线可反向供电</span><span style=";font-family:宋体;font-size:14px">。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-weight:bold;font-size:14px">(1) </span><strong><span style="font-family: 宋体;font-size: 14px">电源输入线</span></strong><strong><span style="font-family: 宋体;font-size: 14px">（</span></strong><strong><span style="font-family: 宋体;font-size: 14px">2根</span></strong><strong><span style="font-family: 宋体;font-size: 14px"> <span style="font-family:宋体">最粗</span></span></strong><strong><span style="font-family: 宋体;font-size: 14px">）</span></strong></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">红色线</span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">+</span><span style=";font-family:宋体;font-size:14px">）：</span><span style=";font-family:宋体;font-size:14px">连接电池的正极，提供直流电源。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">黑色线</span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">-</span><span style=";font-family:宋体;font-size:14px">）：</span><span style=";font-family:宋体;font-size:14px">连接电池的负极，构成完整电路。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">作用：为电调和电机提供电力。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-weight:bold;font-size:14px">(2) </span><strong><span style="font-family: 宋体;font-size: 14px">电机输出线</span></strong><strong><span style="font-family: 宋体;font-size: 14px">（</span></strong><strong><span style="font-family: 宋体;font-size: 14px"><span style="font-family:宋体">中等粗细，</span><span style="font-family:宋体">3根</span></span></strong><strong><span style="font-family: 宋体;font-size: 14px">）</span></strong></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">作用：将直流电转换为三相交流电驱动电机。若电机转向错误，可通过</span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px">交换任意两相</span><span style=";font-family:宋体;font-size:14px">的接线调整。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-weight:bold;font-size:14px">(3) </span><strong><span style="font-family: 宋体;font-size: 14px">控制信号线</span></strong><strong><span style="font-family: 宋体;font-size: 14px">（</span></strong><strong><span style="font-family: 宋体;font-size: 14px">2或3根</span></strong><strong><span style="font-family: 宋体;font-size: 14px">杜邦线</span></strong><strong><span style="font-family: 宋体;font-size: 14px">）</span></strong></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">A. </span><span style=";font-family:宋体;font-size:14px">信号线</span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">通常为白色</span><span style=";font-family:宋体;font-size:14px">）：</span><span style=";font-family:宋体;font-size:14px">接收遥控器或飞控的信号。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">B. </span><span style=";font-family:宋体;font-size:14px">红色线</span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">+5V</span><span style=";font-family:宋体;font-size:14px">）：</span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">内置</span><span style="font-family:宋体">BEC(电池消除电路)时为接收机或飞控供电</span></span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">部分高压电调可能无此功能</span><span style=";font-family:宋体;font-size:14px">）。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">C. </span><span style=";font-family:宋体;font-size:14px">黑色线</span><span style=";font-family:宋体;font-size:14px">（</span><span style=";font-family:宋体;font-size:14px">GND</span><span style=";font-family:宋体;font-size:14px">）：</span><span style=";font-family:宋体;font-size:14px">信号接地，确保信号稳定。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">作用：传递控制指令并可能为外部设备供电。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">4．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">7根线的电调与8根线的电调差在哪根线上？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：差在红色的杜邦线上，少了</span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px"><span style="font-family:宋体">一根</span><span style="font-family:宋体">5伏电源线</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">5．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">电调（</span><span style="font-family:宋体">ESC）上写多少A是什么意思？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：指能承受的</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">瞬间电流</span></span><span style=";font-family:宋体;font-size:14px">的大小。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">6．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">电调（</span><span style="font-family:宋体">ESC）上杜邦线上的磁环起什么作用？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：用于</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">过滤杂波</span></span><span style=";font-family:宋体;font-size:14px">，</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">抗干扰</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><h2 style="margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 黑体;font-size: 21px">（四）</span><strong><span style="font-family: 黑体;font-size: 21px">关于螺旋桨（旋翼）</span></strong></h2><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">1．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">桨径</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">螺旋桨</span></span><span style=";font-family:宋体;font-size:14px">主要指标有</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">桨径</span></span><span style=";font-family:宋体;font-size:14px">和</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">桨距</span></span><span style=";font-family:宋体;font-size:14px">(也叫螺距、总距)，使用4位数字表达，前两位代表桨的直径(单位：英寸，1英寸=25.4mm)，后面两位是桨的桨距。写法有11×4或者写成1104。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">2．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">桨距</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">螺旋桨每转一圈，就会前进一个距离，这个距离就称为理论桨距。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">理论桨距是假设螺旋桨在一种不能压缩的流动的介质中旋转，实际桨距小于理论桨距，因为流体具有可压缩性。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;color:rgb(255,0,0);font-size:14px">3．</span><strong><span style=";font-family:宋体;line-height:150%;color:rgb(255,0,0);font-size:14px">正、反桨的定义及区别</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">多旋翼为了</span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px">抵消</span><span style=";font-family:宋体;font-size:14px">单个螺旋桨的</span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px">反扭矩</span><span style=";font-family:宋体;font-size:14px">，相邻的两个桨的旋转方向是不一样的，所以需要正反桨。正、反桨的气流都是向下吹的。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(1) </span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">俯视</span><span style="font-family:宋体">(顶视)从上往下看，</span></span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">逆时针转的桨是正桨，标记</span><span style="font-family:宋体">CCW</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(2) </span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">俯视</span><span style="font-family:宋体">(顶视)从上往下看，</span></span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">顺时针转的桨是反桨</span><span style="font-family:宋体">(逆桨)，标记CW或R。</span></span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(3) </span></p><p style="line-height: 150%"><span style="font-family: 宋体;color: rgb(0, 0, 255);font-size: 14px"><span style="font-family:宋体">例：螺旋桨</span> <span style="font-family:宋体">1107 正桨 CW CCW 意义？</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：</span><span style="font-family:宋体">1107 桨叶直径为11英寸(in)，螺距为7英寸(in)，1英寸=2.54cm。</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px;background: rgb(255, 255, 0)"><span style="font-family:宋体">螺距：螺旋桨旋转一周，在转轴</span><span style="font-family:宋体">(垂直）上前进的距离</span></span><span style="font-family: 宋体;color: rgb(255, 0, 0);font-size: 14px">。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">正桨，俯视逆时针旋转的桨。</span><span style="font-family:宋体">CCW，俯视逆时针旋转的桨。</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">CW，俯视顺时针旋转的桨。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">4．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">桨的材质及特点？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：桨的材质主要分为：</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">木质：高效、价格适中、易损。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">碳纤：效率适中、高价、耐用。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">塑胶：低效、低成本、较耐用。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">按顺序刚度越来越好，气动效率也越来越高。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">5．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">螺旋桨的主要技术参数有哪些？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：桨径、桨距（螺距）、桨叶数量、升力系数、材质。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">6．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">旋翼是什么，旋翼升力是如何产生的？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">旋翼</span></span><span style=";font-family:宋体;font-size:14px">是一个</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">能量转换部件</span></span><span style=";font-family:宋体;font-size:14px">，把电机提供的旋转动能转换成拉力。升力是由一个或者多个旋翼与空气进行相反作用而获得的。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">7．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">画出桨叶翼型有哪几种（至少</span><span style="font-family:宋体">3种），哪种翼型升力大？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：同等升力条件下，凹凸（升力大）</span></p><p style="vertical-align: baseline"><strong><span style="font-family: 宋体;font-size: 19px"> </span></strong></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">8．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多轴旋翼机向左转弯如何实现？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：顺时针桨加速，逆时针减速</span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;color:rgb(255,0,0);font-size:14px">9．</span><strong><span style=";font-family:宋体;line-height:150%;color:rgb(255,0,0);font-size:14px"><span style="font-family:宋体">四轴飞行器，在悬停下怎么左旋</span><span style="font-family:宋体">90度？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：俯视或前视顺时针桨加速（左前，右后），逆时针桨减速（右前、左后）。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">10．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多旋翼向右转哪个桨加速？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：逆时针螺旋桨</span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">11．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多旋翼如何向前飞？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px">横轴前侧</span><span style=";font-family:宋体;font-size:14px">螺旋桨减速，</span><span style=";font-family:宋体;font-size:14px">横轴</span><span style=";font-family:宋体;font-size:14px">后</span><span style=";font-family:宋体;font-size:14px">侧</span><span style=";font-family:宋体;font-size:14px">螺旋桨加速</span><span style=";font-family:宋体;font-size:14px">。</span><span style=";font-family:宋体;font-size:14px">实现前后的动力差，以产生一个向前的推力。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">12．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">转弯过程中为什么要压副翼？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：提供向心力，配合方向舵实现协调转弯。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">13．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多旋翼飞行器为什么一般相对的桨旋转方向是不一样的？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：两两相对，抵消反扭。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">14．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">飞机通过什么来改变升力？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(1) </span><span style=";font-family:宋体;font-size:14px">改变机翼形状。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(2) </span><span style=";font-family:宋体;font-size:14px">增加飞机的速度。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(3) </span><span style=";font-family:宋体;font-size:14px">增加机翼的面积。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(4) </span><span style=";font-family:宋体;font-size:14px">使用辅助升力装置，如：襟翼、缝翼、扰流板。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(5) </span><span style=";font-family:宋体;font-size:14px">改变机身姿态。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(6) </span><span style=";font-family:宋体;font-size:14px">改进机翼翼型。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(7) </span><span style=";font-family:宋体;font-size:14px">适当增加机翼飞行时的迎角。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">15．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">怎么在转速不变的情况下增加升力？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：升力增加</span><span style="font-family:宋体">→阻力增加→电流增大，在电机不变的情况下，小桨改大桨。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">16．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多旋翼的螺旋桨为什么是几何扭转的？</span></strong></h3><p style="margin-right:17px;margin-left:0;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：螺旋桨角速度一样，螺旋桨越靠近桨尖的位置，线速度越大</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">桨叶要保证各处的升力一致，</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">所以，</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">越靠近桨尖的位置，越趋于平缓。</span></p><p style="margin-right:17px;margin-left:0;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">或：</span><span style=";font-family:宋体;font-size:14px">是为了</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">抵消扭矩</span></span><span style=";font-family:宋体;font-size:14px">，</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">从毂轴到叶尖产生一致的升力</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">17．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">螺旋桨桨叶角是不变的吗？为什么</span><span style="font-family:宋体">?</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：不是。它是从翼根到翼尖逐渐减小的，最大的安装角在毂</span><span style="font-family:宋体">(gǔ)轴，最小的安装角在叶尖。</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">原因：为了</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">从毂</span><span style="font-family:宋体">(gǔ)轴到叶尖获得一致的升力</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">18．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">桨的动静平衡？</span> </span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：桨的静平衡通俗讲就是两个叶片是否一样重。桨的动平衡就是看转起来是否有振动，有没有出现双叶现象。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">19．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">影响螺旋桨气动效率的因素？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：螺旋桨直径、螺距及翼型转速。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">20．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">11英寸的螺旋桨是多少厘米？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：</span><span style="font-family:宋体">11×2.54=27.94厘米(</span></span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px">1英寸=2.54厘米</span><span style=";font-family:宋体;font-size:14px">)</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">21．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">旋翼翼尖线速度计算方法？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：线速度</span><span style="font-family:宋体">=角速度×半径（V=wr）</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">备注：角速度</span><span style="font-family:宋体">w就是物体在单位时间内转过的角度；线速度V就是物体运动的速率。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">22．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">多旋翼姿态飞行过程中掉高，分析可能的原因</span></strong><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px">气压高度计故障或有堵塞；风的影响（下洗气流）；气压变低</span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">23．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px"><span style="font-family:宋体">多旋翼</span><span style="font-family:宋体">×型和＋字形的区别？</span></span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(1) </span><span style=";font-family:宋体;font-size:14px">×模式要难飞一点，但动作更灵活</span><span style=";font-family:宋体;font-size:14px">，</span><span style=";font-family:宋体;font-size:14px">更稳定。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;letter-spacing:1px;font-size:14px">(2) </span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">＋</span><span style=";font-family:宋体;font-size:14px">模式要好飞一点，动作灵活差一点，</span><span style=";font-family:宋体;font-size:14px">但机动性更好，</span><span style=";font-family:宋体;font-size:14px">所以适合初学者。</span></p><p style="margin-left:28px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;font-size:14px">(3) </span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">特别注意，</span><span style="font-family:宋体">×模式和</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">＋</span><span style=";font-family:宋体;font-size:14px">模式的飞控调参</span><span style=";font-family:宋体;font-size:14px">、</span><span style=";font-family:宋体;font-size:14px">安装是不同的</span><span style=";font-family:宋体;font-size:14px">。</span><span style=";font-family:宋体;font-size:14px">如果飞控板安装错误，会剧烈</span><span style=";font-family:宋体;font-size:14px">地</span><span style=";font-family:宋体;font-size:14px">晃动，根本无法飞。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"> </span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">24．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">翼型弦长及相对厚度的含义？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">翼型弦长：指翼剖面前缘到后缘的距离。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">相对厚度：翼型最大厚度</span><span style="font-family:宋体">cmax与弦长b的比值，并以百分数表示。</span></span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">相对厚度的大小表示翼型的厚薄程度。相对厚度大，表示翼型厚；相对厚度小，表示翼型薄。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">25．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">翼型相对弯度的含义？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：相对弯度：翼型中弧线的最高点距翼弦线的最大距离与翼弦长的比值，并用百分数表示。相对弯度的大小表示翼型的弯曲程度，相对弯度大表示翼型向上弯曲度大；相对弯度小表示翼型向上弯曲度小。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">26．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">驻点的含义？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：气流速度为零，压力最大的点。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">27．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">机翼、旋翼、螺旋桨升力产生的机理？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：当气流流过机翼时，气流分别沿机翼上、下表面流过，而在机翼后缘重新汇合后向后流去。由于机翼上表面流速加快，压力降低；在机翼下表面，流速减慢，压力增大。机翼上、下表面出现了压力差。产生了机翼的升力。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">28．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">解释，桨叶角，上反角，迎角，螺距？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">桨叶角：螺旋桨桨叶剖面弦线和螺旋桨旋转平面之间的夹角。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">上反角：机翼基准面和水平面的夹角。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">迎角：飞机翼弦</span><span style=";font-family:宋体;font-size:14px">前缘</span><span style=";font-family:宋体;font-size:14px">与相对气流的夹角</span><span style=";font-family:宋体;font-size:14px">。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">螺距：</span><span style=";font-family:宋体;font-size:14px">螺旋桨旋转一周</span><span style=";font-family:宋体;font-size:14px">，</span><span style=";font-family:宋体;font-size:14px">在轴向上</span><span style=";font-family:宋体;font-size:14px">前进的距离</span><span style=";font-family:宋体;font-size:14px">。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">29．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">解释迎角的含义，翼弦的含义，哪三种情况下会超过临界迎角，会造成什么后果</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">迎角</span></span><span style=";font-family:宋体;font-size:14px">就是</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">飞机翼弦与相对气流的夹角</span></span><span style=";font-family:宋体;font-size:14px">。</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">翼弦</span></span><span style=";font-family:宋体;font-size:14px">就是</span><span style=";font-family:宋体;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">飞机前缘点到后缘点之间的连线</span></span><span style=";font-family:宋体;font-size:14px">。</span></p><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">高速飞行、低速飞行、和转弯都会导致超过临界迎角，造成飞机失速，升力迅速减小，容易坠机。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">30．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">螺旋桨的翼型，写出常用三种类型，其中在同等升力条件下，升力最大是哪一种？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：平凸型、凹凸型、</span><span style="font-family:宋体">S型；同等升力条件下S型的升力最大。</span></span></p><p style="vertical-align: baseline;line-height: 150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px"> </span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">31．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">桨的大小与升力？</span></strong></h3><p style="margin-left:0;text-indent:0;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：浆的大小与升力成正比。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">32．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">1555两叶桨、1740三叶桨，1445三叶桨，这三个桨哪个更适合高原飞行？</span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px"><span style="font-family:宋体">答：</span><span style="font-family:宋体">1740三叶桨（大直径小螺距螺旋桨）。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">33．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">高海拔下航时及载重能力将大大缩短，此时应如何配置螺旋桨及电机？</span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：</span><span style=";font-family:宋体;color:rgb(255,0,0);letter-spacing:1px;font-size:14px"><span style="font-family:宋体">高</span><span style="font-family:宋体">KV</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">电机，</span><span style=";font-family:宋体;color:rgb(255,0,0);letter-spacing:1px;font-size:14px">大直径</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">、</span><span style=";font-family:宋体;color:rgb(255,0,0);letter-spacing:1px;font-size:14px">小螺距</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">螺旋桨。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">34．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">三叶桨与两叶桨的区别和各自优点？</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：</span><span style=";font-family:宋体;font-size:14px">两叶桨</span><span style=";font-family:宋体;font-size:14px">：</span><span style=";font-family:宋体;font-size:14px">操纵灵敏度比较慢，平稳，效率高，载重大</span><span style=";font-family:宋体;font-size:14px">，</span><span style=";font-family:宋体;font-size:14px">省电，一般用在工业无人机，大载荷飞机。三叶桨</span><span style=";font-family:宋体;font-size:14px">：</span><span style=";font-family:宋体;font-size:14px">操纵灵敏度</span><span style=";font-family:宋体;font-size:14px">反应快</span><span style=";font-family:宋体;font-size:14px">，速度快，机动性好，费电，一般用在航模和竞技穿越机。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family:宋体;color:rgb(255,0,0);font-size:14px">35．</span><strong><span style=";font-family:宋体;line-height:150%;color:rgb(255,0,0);font-size:14px">高原桨和平原桨的区别？为什么？</span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：高原桨叶</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">大直径</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">、</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">小螺距</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">，</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">高</span><span style="font-family:宋体">KV值</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。高原桨首先要考虑</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">减少阻力</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">，</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">提高效能</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。螺距增大，虽然升力系数随着增大，但阻力也增大，同时升力与旋翼半径的四次方成正比，因此要选择直径更大、螺距更小的桨。</span></p><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px"><span style="font-family:宋体">在桨径一定的情况下，高原桨桨叶面积尽可能大一些，减小螺距，电机选择更高</span><span style="font-family:宋体">KV值。</span></span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">36．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">保持油门持续爬升，电机功率会增加还是减小？为什么？</span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：不变。因为飞机的重量是不变的。影响功率的是载荷重量，不是舵量。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">37．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">保持油门持续爬升，螺旋桨转速（电机转速）会增加还是减小？为什么？</span></strong></h3><p style="margin-right:17px;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：转速先升高，后下降。因为随着高度的增加，空气密度减小，螺旋桨所受的阻力减小，为了保持爬升，电机转速提高。但，随后因电池电压下降，转速降低。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">38．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">副翼和襟翼的区别和作用</span></strong></h3><p style=";text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;font-size:14px">答：副翼：机翼外侧，差动，横滚运动。襟翼：机翼内侧，同上同下，减速增升。起飞时以增升为主；降落时以减速为主，偏转角度会更大些。</span></p><h3 style="margin-top:13px;margin-bottom:13px;margin-left:0;text-indent:0;text-autospace:none;page-break-after:avoid;vertical-align:baseline;line-height:150%"><span style="font-family: 宋体;font-size: 14px">39．</span><strong><span style="font-family: 宋体;line-height: 150%;font-size: 14px">翼梢小翼的作用是什么？</span></strong></h3><p style="margin-right:17px;margin-left:0;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">答：翼梢小翼是飞机机翼末端的垂直或倾斜延伸结构，其主要作用是通过</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">物理阻</span></span></p><p style="margin-right:17px;margin-left:0;text-autospace:none;vertical-align:baseline;line-height:150%"><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">挡和引导气流</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">，削弱涡流强度，</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">降低诱导阻力</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">(可减少约5%</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">～</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">10%)</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">，</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">从而</span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">提高效率和飞行性能</span></span><span style=";font-family:宋体;letter-spacing:1px;font-size:14px">。</span></p><link rel="stylesheet" href="//bbs.97815.com/source/plugin/wcn_editor/public/wcn_editor_fit.css?v134_M9p" id="wcn_editor_css"/>
页:
[1]