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发表于 2012-1-19 17:21:08
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As I'm sure you're aware, it's perfectly possible to fly most modern aeroplanes around a turn without rudder. While the horizontal component of lift provides the force needed to change the direction of motion of the centre of gravity of the aircraft, a yawing moment is required to change the heading of the aircraft in a corresponding way. Without rudder, that yawing moment comes from the effect of sideslip.
The key is that if there's yaw, there has to be a yawing moment driving the yaw. That can come from rudder, or it can come from sideslip -- you need one or the other.
http://www.pprune.org/private-flying/204267-turning-sideslip.html
bookworm 所提到的由所谓sideslip来提供yaw力矩实际上即是我在102楼所提到的重力和升力中心不同所产生的力矩。 |
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