Aerodynamic Characteristics, Including Effect of Body Shape, of a Mach 6 Aircraft Concept
Aerodynamic Characteristics, Including Effect of Body Shape, of a Mach 6 Aircraft Concept

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-08-14

Total Pages: 32

ISBN-13: 9781725609662

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Longitudinal aerodynamic characteristics for a hydrogen-fueled hypersonic transport concept at Mach 6 are presented. The model components consist of four bodies with identical longitudinal area distributions but different cross-sectional shapes and widths, a wing, horizontal and vertical tails, and a set of wing-mounted nacelles simulated by slid bodies on the wing upper surface. Lift-drag ratios were found to be only sightly affected by fuselage planform width or cross sectional shape. Relative distribution of fuselage volume above and below the wing was found to have an effect on the lift-drag ratio, with a higher lift drag ratio produced by the higher wing position. Riebe, G. D. Langley Research Center NASA-TP-2235, L-15675, NAS 1.60:2235 RTOP 505-43-23-10...

Experimental Aerodynamic Characteristics for Bodies of Elliptic Cross Section at Angles of Attack from 0 ̊to 58 ̊and Mach Numbers from 0.6 to 2.0
Experimental Aerodynamic Characteristics for Bodies of Elliptic Cross Section at Angles of Attack from 0 ̊to 58 ̊and Mach Numbers from 0.6 to 2.0

Author: Leland Howard Jorgensen

Publisher:

Published: 1975

Total Pages: 88

ISBN-13:

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An experimental investigation was conducted in the Ames 6- by 6-Foot Wind Tunnel to measure the static aerodynamic characteristics for two bodies of elliptic cross section and for their equivalent body of revolution. The equivalent body of revolution had the same length and axial distribution of cross-sectional area as the elliptic bodies. It consisted of a tangent ogive nose of fineness ratio 3 followed by a cylinder with a fineness ratio of 7. For the first body of elliptic cross section, the ratio of the semimajor axis to semiminor axis was held constant at 2 all along the body length. For the second elliptic body the nose was unchanged, but the aftersection was changed as follows: The cross-sectional axis ratio a/b was decreased from 2 to 1 over an axial distance of about 1.66 diam. Then, at this position, the a,b axis system was rotated 900, and the a/b ratio was increased back to 2 over the next 2.34 diam in length. Over the last length of three body diam, this rotated a/b ratio was held constant at 2.