SIDE-FORCE CONTROL ON A DIAMOND FOREBODY AT HIGH ANGLES OF ATTACK

被引:0
|
作者
RAO, DM
SHARMA, G
机构
[1] ViGYAN Inc, Hampton, VA
来源
JOURNAL OF AIRCRAFT | 1994年 / 31卷 / 04期
关键词
D O I
10.2514/3.46579
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A high-alpha side-force control concept for diamond cross section forebodies was investigated. A full-length strake is deployed on one of the lower facets to force a large-scale separation vortex adjacent to the forebody surface, whose suction provides side force across a broad high-alpha range. A simultaneous reduction of the leeside vortex suction decreases the forebody normal force, leading to pitch-up alleviation and drag reduction as additional high-alpha benefits, particularly when the strakes are deployed on both sides. Low-speed wind-tunnel measurements of surface pressures and six-component forces/moments supported by surface and flowfield visualizations on an isolated diamond forebody model verified the control effectiveness to nearly 70-deg angle of attack, and up to 10-deg sideslip angle.
引用
收藏
页码:915 / 921
页数:7
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