국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Transonic Aerodynamics
Volume No	Aerofoils: drag rise, designs, separation. Aerofoils: excrescence drag magnification.
DATA Title	The lift achievable by aerofoils having a particular form of supercritical upper-surface pressure distribution that yields only small wave drag.
DATA Item	78010
KEYWORD	aerofoil, design, distribution, drag, flow, geometry, lift, mach, number, pressure, rise, roof, separation, top, transonic, airfoil
ISBN	0 85679 270 5
ABSTRACT	ESDU 78010 gives charts of lift coefficient as a function of Mach number and thickness/chord ratio for a family of aerofoils having a particular form of supercritical upper-surface pressure distribution obtained by adding a local Mach number increment to the flat roof-top portion of pressure distribution used for the aerofoils of ESDU 71019. The charts give realistic design targets for drag-rise Mach number, lift coefficient at drag rise and thickness/chord ratio as well as providing exchange rates between those quantities. The chordwise station (coincidental with shock location) at which pressure recovery to the trailing-edge begins is treated as a variable. Thresholds corresponding to the onset of rear separation, attributable to the pressure rise from the shock-upstream location to the trailing edge, are predicted by a modified form of Stratfordchr(39)s criterion.