四旋翼无人机怎样实现转向？
How does a quadcopter turn?
它通过改变四个电机转速差产生俯仰、横滚、偏航和升降；对角螺旋桨反向旋转以抵消反扭矩，靠转速差实现偏航。
It varies the four motor speeds to produce pitch, roll, yaw and thrust; diagonally opposite rotors spin opposite ways to cancel torque, and yaw comes from speed differences.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
Seddon《直升机空气动力学基础》；NASA
Seddon, Basic Helicopter Aerodynamics; NASA
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL16495261W：Basic helicopter aerod
#无人机 #飞行控制
多旋翼无人机续航为什么普遍较短？
Why do multirotor drones have short flight time?
它们靠多台电机持续对抗重力悬停，能量消耗大，而电池能量密度远低于燃油，因此通常只能飞20到40分钟。
They spend energy fighting gravity to hover, and batteries have far lower energy density than fuel, so flights usually last only 20 to 40 minutes.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-10-04
来源 · Source
Linden & Reddy，《林登电池手册》（第4版）
Linden & Reddy, 'Lindens Handbook of Batteries' (4th ed.)
独立核验依据 · Independent verification: 核验依据 1 ISBN 978-0-07-037921-3 (1995, McGraw-Hill)
#无人机 #电池