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http://dx.doi.org/10.5139/JKSAS.2005.33.10.060

A Study on Control Law Augmentation in order to Improve Aircraft Controllability and Stability in High Angle of Attack  

Kim, Chong-Sup (한국항공우주산업(주))
Hwang, Byung-Moon (한국항공우주산업(주))
Lee, Dong-Gyu (한국항공우주산업(주))
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.10, 2005 , pp. 60-67 More about this Journal
Abstract
Modern version of supersonic jet fighter aircraft must have guaranteed appropriate controllability and stability in HAoA(high angle of attack). Limit value of aircraft entering into the deep stall in HAoA is related to aircraft configuration design. But, In order to guarantee the aircraft's safety in HAoA, control law for HAoA region implemented in digital Fly-By-Wire flight control system of supersonic jet fighter. The AoA limiter is designed for positive HAoA in longitudinal control law. But, aircraft departure during aggressive negative pitch maneuver such as push over in departure resistance flight test. Therefore negative AoA limiter is needed in longitudinal control law. Result of T-50 flight test show that the AoA is exceed the limit value during aggressive positive pitch maneuver in pull up of power approach mode. In this paper, the AoA limit control law in positive and negative AoA was proposed in order to improve aircraft controllability and stability.
Keywords
RSS(Relaxed Static Stability); FLCS(Flight Control System); Angle of Attack Limiter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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