국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Aerodynamics
Volume No	AEROFOILS AND WINGS - Wings - lift, pitching moment, aerodynamic centre, spanwise loading (continued)
DATA Title	Method for the rapid estimation of spanwise loading of wings with camber and twist in subsonic attached flow.
DATA Item	83040
KEYWORD	camber, distribution, lift, loading, spanwise, twist, wing
ISBN	0 85679 455 4
ABSTRACT	ESDU 83040 gives a simple and rapid means of estimating the spanwise loading of a wide range of twisted wing planforms for unseparated subcritical flow. It is based on lifting-surface theory and extends, to take account of twist, the basic method of ESDU T.D.Memo 6403 for spanwise loading due to incidence of untwisted and uncambered wings. A simple artifice is used to represent any spanwise twist distribution by a combination of linear segments. From the linear representation, effective values of local twist are derived for use in the method. Spanwise loadings can be estimated either at a given incidence or for a given wing lift coefficient. The method is applicable to wing planforms for which bA lies between 1.5 and 12 and A tanf lies between 0 and 6, where b is root of one minus Mach number squared, f is half-chord sweep and A is aspect ratio. The wings can have any taper ratio, with straight, cranked or curved leading-edges. The method is illustrated by three detailed worked examples. ESDU 95010 introduces a program for the calculation of spanwise loading of wings with camber and twist based on the method of Multhopp-Richardson.