曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

┃                ┃    ┃            ┃      ┃        ┃
┃                ┃ .  ┃            ┃ .    ┃ .      ┃
┃                ┃ .  ┃            ┃ .    ┃.       ┃
┃                ┃ .  ┃            ┃ \    ┃        ┃
┃                ┃ ,  ┃            ┃ .    ┃ .      ┃
┃                ┃ .  ┃            ┃.     ┃.       ┃
┃                ┃ .  ┃            ┃.     ┃.       ┃
┃                ┃.   ┃            ┃.     ┃:~ mac  ┃
┃                ┃ .  ┃            ┃.     ┃        ┃
┃                ┃ .  ┃            ┃.     ┃        ┃
┃                ┃ .  ┃            ┃ .    ┃        ┃
┃                ┃ .  ┃            ┃ \    ┃        ┃
┃                ┃ ~  ┃            ┃      ┃        ┃
┗━━━━━━━━┻━━┻━━━━━━┻━━━┻━━━━┛
Leading
Edge
Trailing
Edge
Fiig. 3.52    Stick-free permissible center of gravity travel.
3.3.16  Stick-Free Margin
    The stick-free margin is defined as
                                              H; = NL - Xc8                                     (3.137)
                               = -~ ),-                    (3.138)
For a stick-free stable airplane, the stick-free margin (H;) is positive.
   With stick-free, the permissible center of gravity travel (Ax') is modified as
shown schematically in Fig. 3.52.
3.3.77  Trim Tab
    A tab is a small flap hinged at the trailing edge of the elevator (see Fig. 3.53).
A deflection of the tab alters the pressure distribution over the entire horizontal
tail surface and hence gives a control over the hinge-moment coefficient. Thus, a
deflection of the tab also affects the floating characteristics of the elevator. As we
will discuss soon, the stick force directly depends on the floating characteristics of
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL2(13)