국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Aerodynamics
Volume No	BODIES - Pressure distribution, normal force, pitching moment, centre of pressure
DATA Title	Computer program for the calculation of normal force and pitching moment of forebody-cylinder combinations at angles of attack up to 90 degrees and Mach numbers up to 5, including the effects of conical boat-tailing.
DATA Item	90034
KEYWORD	axisymmetric, blunt, boat, body, cone, cylinder, ellipsoid, force, forebody, moment, normal, ogive, pitching, program, secant, spherical, supersonic, tail, tangent
ISBN	0 85679 760 X
ABSTRACT	ESDU 90034 introduces a Fortran program of the prediction method, provided on disc (uncompiled) in the software volume as ESDUpac A9034. It uses ESDU 77028 to obtain the required geometric properties of the various axisymmetric forebody shapes, the method of ESDU 89008 for normal-force-curve and pitching-moment-curve slopes at zero angle of attack, and the method of ESDU 89014 for normal-force, pitching-moment and centre of pressure position at angle of attack modified, if required, by the method of ESDU 87033 to allow for the effects of any boat-tailing. The input data required and the interpretation of the output are described and illustrated with three worked examples. The limitations of the program are those of the original prediction methods on which it is based, and if any of them are exceeded the program stops and provides an appropriate error message.