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http://dx.doi.org/10.5302/J.ICROS.2008.14.3.307

A Study on the Design and Validation of Pilot Activated Recovery System to Recovery of an Aircraft Unusual Attitude  

Kim, Chong-Sup (한국항공우주산업)
Cho, In-Je (한국항공우주산업)
Kang, Im-Ju (한국항공우주산업)
Hur, Gi-Bong (국방과학연구소)
Lee, Eun-Yong (국방과학연구소)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.14, no.3, 2008 , pp. 307-317 More about this Journal
Abstract
Relaxed static stability(RSS) concept has been applied to improve aerodynamic performance of modem version supersonic jet fighter aircraft. Therefore, flight control system are necessary to stabilize an unstable aircraft and provides adequate handling qualities. Also, flight control systems of modem version aircraft employ a safety system to support emergency situations such as a pilot unknown attitude flight conditions of an aircraft in night flight-testing. This situation is dangerous because the aircraft can lose if the pilot not take recognizance of situation. Therefore, automatic recovery system is necessary. The system called the "Pilot Activated Recovery System" or PARS, provided a pilot initiated automatic maneuver capable of an aircraft recoveries in situations of unusual attitudes. This paper addresses the concept of PARS and designed using nonlinear control law design process based on model of supersonic jet trainer. And, this control law is verified by nonlinear analysis and real-time pilot evaluation using in-house software. The result of evaluation reveals that the PARS support recovery of an aircraft unusual attitude and improve a safety of an aircraft.
Keywords
PARS(Pilot Activated Recovery System); RSS(Relaxed Static Stability); FLCS(Flight Control System);
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