曝光臺(tái) 注意防騙
網(wǎng)曝天貓店富美金盛家居專(zhuān)營(yíng)店坑蒙拐騙欺詐消費(fèi)者
┣━╋━━━╋━━╋━╋━━━╋━━━━╋━━━━╋━━━━╋━━━╋━━━┫
┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃
┣━╋━━━╋━━╋━╋━━━╋━━━━╋━━━━╋━━━━╋━━━╋━━━┫
┃ ┃ ┃ ┃ ┃ ┃ ┃j ┃./ ┃// ┃76 ┃
┣━╋━━━╋━━╋━╋━━━╋━━━━╋━━━━╋━━━━╋━━━╋━━━┫
┃ ┃ ┃ ┃ ┃ ┃ ┃/-/ ┃/ ┃ ┃-- 5 ┃
┣━╋━━━╋━━╋━╋━━━╋━━━━╋━━━━╋━━━━╋━━━╋━━━┫
┃ ┃ ┃ ┃ ┃ ┃~ ┃/. ┃( ┃ - ┃ ┃
┃ ┃ ┃ ┃~ ┃)4 ┃ ┃ ┃ ┃ ┃~ ┃
┣━╋━━━╋━━╋━╋━━━╋━━━━╋━━━━╋━━━━╋━━━╋━━━┫
┃ ┃ ┃ ┃ ┃ ┃-_---_- ┃---__-- ┃------ ┃ ┃-' ┃
┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃1 ┃
┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┣━━━╋━━━┫
┃ ┃.---- ┃-N ┃ ┃---- ┃ ┃ ┃ ┃ ┃-d ┃
┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ ┃ 1 ┃
┗━┻━━━┻━━┻━┻━━━┻━━━━┻━━━━┻━━━━┻━━━┻━━━┛
M cos A%
Fig. 3.97 Compressribility correc:tion factor K VA (Ref. 1).
E
Tar7 contribution. The contribution ofthe horizontal tail to lateral stability is
usually small and can be ignored. However,if the horizontal tailis comparable in
size to the wing, then the methods given earlier for estimating the wing contribution
can be used.
The vertical tail contribution to lateral stability is given by
zu cos a - lU si
(C,pl)v=C)..v ___ ' ) (3.373)
b
where l,, and zy are, respectively, the horizontal and vertical distances between the
center of gravity and the vertical tail aerodynamic center as shown in Fig. 3.102
and C}-.y is the vertical tail side force. As shown in Fig. 3.102, the rolling moment
arm of the vertical tail side force depends on the angle of attack because the rolling
moment is with respect to the wind axis system. For subsonic speeds, C)..v is given
中國(guó)航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：
PERFORMANCE, STABILITY, DYNAMICS, AND CONTROL2(82)
