국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Aerodynamics
Volume No	CONTROLS AND FLAPS - Controls - lift, pitching moment, rolling moment, drag
DATA Title	Yawing moment coefficient for plain ailerons at subsonic speeds.
DATA Item	88029
KEYWORD	aerodynamic, aileron, control, moment, plain, yawing
ISBN	0 85679 661 1
ABSTRACT	ESDU 88029 predicts the adverse yawing moment accompanying aileron deflection as two components, an induced drag contribution due to the differential setting and a profile drag component. For the first component a semi-empirical correlation procedure is developed while for the second the method of ESDU 87024, which deals with the profile drag due to deflection of plain flaps, is used. The method applies to sealed controls (or controls with small gaps) and allows for differential operation and flap deployment. The experimental data drawn from the literature (with some unpublished wind-tunnel measurements) covered a wide range of wing and aileron geometry which is specified. The method predicted the change of yawing moment coefficient per unit control deflection to within 0.003/rad at zero lift and without deployed flaps. A program of the method is provided with ESDU 88040 as ESDUpac A8840.