국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	PRECISION CONTROLLABILITY OF THE YF-17 AIRPLANE
저자	T. R. Sisk and N. W. Matheny
Keyword	Controllability; F-17 aircraft; Maneuverability; Pilot performance; Tracking (position).
URL	http://www.dfrc.nasa.gov/DTRS/1980/PDF/H-1089.pdf
보고서번호	NASA-TP-1677
발행년도	1980
출처	NASA Dryden Flight Research Center
ABSTRACT	A flying qualities evaluation conducted on the YF-17 airplane permitted assessment of its precision controllability in the transonic flight regime over the allowable angle of attack range. The precision controllability (tailchase tracking) study was conducted in constant-g and windup turn tracking maneuvers with the command augmentation system (CAS) on, automatic maneuver flaps, and the caged pipper gunsight depressed 70 mils. This study showed that the YF-17 airplane tracks essentially as well at 7 gchr(39)s to 8 gchr(39)s as earlier fighters did at 4 gchr(39)s to 5 gchr(39)s before they encountered wing rock. The pilots considered the YF-17 airplane one of the best tracking airplanes they had flown. Wing rock at the higher angles of attack degraded tracking precision, and lack of control harmony made precision controllability more difficult. The revised automatic maneuver flap schedule incorporated in the airplane at the time of the tests did not appear to be optimum. The largest tracking errors and greatest pilot workload occurred at high normal load factors at low angles of attack. The pilots reported that the high-g maneuvers caused some tunnel vision and that they found it difficult to think clearly after repeated maneuvers.