Aerodynamic design of Pegasus - Concept to flight with computational fluid dynamics
| Autor: | Michael R. Mendenhall, Marnix F. E. Dillenius, Steven C. Caruso, Gary D. Kuhn, Daniel J. Lesieutre |
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| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Journal of Spacecraft and Rockets. 31:1007-1015 |
| ISSN: | 1533-6794 0022-4650 |
| DOI: | 10.2514/3.26551 |
| Popis: | Pegasus™, a three-stage, air-launched, winged space booster, was developed to provide fast and efficient commercial launch services for small satellites. The aerodynamic design and analysis of the vehicle were conducted without wind-tunnel and subscale model testing, using only computational aerodynamic and fluid-dynamic methods. All levels of codes, ranging in complexity from empirical database methods to three-dimensional NavierStokes codes, were used in the design. This article describes the design and analysis requirements, the unique and conservative design philosophy, and the analysis methods considered for the various technical areas of interest and concern. Nomenclature AR = aspect ratio CD = drag coefficient CL = lift coefficient Cm = pitching-moment coefficient CAT = normal-force coefficient c = mean aerodynamic chord g = gravitational acceleration h = altitude / = reference length MOO = Mach number p - local pressure Poo = freestream pressure q^ - dynamic pressure S = reference area t = time x = axial coordinate measured from the nose y = lateral coordinate z = vertical coordinate a. = angle of attack, deg ft = angle of sideslip, deg 8 = horizontal tail deflection angle, deg 0 = angle of roll, deg i = taper ratio |
| Databáze: | OpenAIRE |
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