국내 최대 기계 및 로봇 연구정보

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타이틀	FLIGHT-DETERMINED SUBSONIC LIFT AND DRAG CHARACTERISTICS OF SEVEN LIFTING-BODY AND WING-BODY REENTRY VEHICLE CONFIGURATIONS WITH TRUNCATED BASES
저자	Edwin J. Saltzman, K. Charles Wang and Kenneth W. Iliff
Keyword	Aerodynamics; Lifting bodies; Reentry vehicles; Reusable launch vehicles
URL	http://www.dfrc.nasa.gov/DTRS/1999/PDF/H-2287.pdf
보고서번호	H-2287
발행년도	1999
출처	NASA Dryden Flight Research Center
ABSTRACT	This paper examines flight-measured subsonic lift and drag characteristics of seven lifting-body and wing-body reentry vehicle configurations with truncated bases. The seven vehicles are the full-scale M2-F1, M2-F2, HL-10, X-24A, X-24B, and X-15 vehicles and the Space Shuttle prototype. Lift and drag data of the various vehicles are assembled under aerodynamic performance parameters and presented in several analytical and graphical formats. These formats unify the data and allow a greater understanding than studying the vehicles individually allows. Lift-curve slope data are studied with respect to aspect ratio and related to generic wind-tunnel model data and to theory for low- aspect-ratio planforms. The proper definition of reference area was critical for understanding and comparing the lift data. The drag components studied include minimum drag coefficient, lift-related drag, maximum lift-to-drag ratio, and, where available, base pressure coefficients. The effects of fineness ratio on forebody drag were also considered. The influence of forebody drag on afterbody (base) drag at low lift is shown to be related to Hoerner뭩 compilation for body, airfoil, nacelle, and canopy drag. These analyses are intended to provide a useful analytical framework with which to compare and evaluate new vehicle configurations of the same generic family.