页次 1
Ka-28/31/50/52 是雙旋槳的直升機。另外這種設計不是共產國家專有的,例子有Sikorsky X2。
[flash=800,480]http://www.youtube.com/v/mLKyuwLZnbE?version=3&autohide=1[/flash]
最后修改: Enedina (2014-02-14 21:41:22)
离线
[↑] @dragon1475632 寫道: 這台啦~查一下叫 卡-31,之前在某個恐怖遊戲有看過他, 是共產部隊的海軍預警機(大陸似乎還在用),不過後來發現同類型設計(共軸螺旋槳)的俄軍直升機也不少呢 另外我希歡他的原因也是因為他少見的設計 : …
別忘了還有KA-50/52呢。
离线
[↑] @MorksAllen 寫道: 話說按照物理原則,這類型的直升機上下兩個螺旋槳的旋轉方向必定要互相往反方向旋轉吧?
…
是。
One of the problems with any single set of rotor blades is the torque (rotational force) exerted on the helicopter fuselage in the direction opposite to the rotor blades. This torque causes the fuselage to rotate in the direction opposite to the rotor blades. In single rotor helicopters, the antitorque rotor or tail rotor conteracts the main rotor torque and controls the fuselage rotation.
Coaxial rotors do not encounter the problem of main rotor torque by turning each set of rotors in opposite directions. The opposite torques from the rotors cancel each other out. Rotational maneuvering, yaw control, is accomplished by increasing the collective pitch of one rotor and decreasing the collective pitch on the other. This causes a controlled dis-symmetry of torque.
离线
页次 1