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Development of Flight Control Laws for the T-50 Advanced Supersonic Jet Trainer
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 Title & Authors
Development of Flight Control Laws for the T-50 Advanced Supersonic Jet Trainer
Kim, Chong-Sup; Hur, Gi-Bong; Hwang, Byung-Moon; Cho, In-Je; Kim, Seung-Jun;
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 Abstract
The T-50 advanced supersonic jet trainer employs the Relaxed Static Stability (RSS) concept to improve the aerodynamic performance while the flight control system stabilizes the unstable aircraft and provides adequate handling qualities. The T-50 flight control laws employ a proportional-plus-integral type controller based on a dynamic inversion method in longitudinal axis and a proportional type controller based on a blended roll system with simple roll rate feedback and beta-betadot feedback system. These control laws are verified by flight tests with various maneuver set flight envelopes and the control laws are updated to resolve flight test issues. This paper describes several concepts of flight control laws used in T-50 to resolve those flight test issues. Control laws for solving the roll-off problem during pitch maneuver in asymmetric loading configurations, improving the departure resistance in negative angle of attack conditions and enhancing the fine tracking performance in air-to-air tracking maneuvers are described with flight test data.
 Keywords
Relaxed static stability;Digital fly-by-wire flight control system;Angle-of-attack limiter;Departure resistance;Fine tacking performance;
 Language
English
 Cited by
1.
세로축 자동조종 비행제어법칙 개선에 관한 연구,김종섭;황병문;이철형;

한국항공우주학회지, 2008. vol.36. 11, pp.1104-1111 crossref(new window)
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