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Hypersonic lateral and directional stability characteristics of aeroassist flight experiment configuration in air and CF4Hypersonic lateral and directional stability characteristics measured on a 60 deg half-angle elliptical cone, which was raked at an angle of 73 deg from the cone centerline and with an ellipsoid nose (ellipticity equal to 2.0 in the symmetry plane), are presented for angles of attack from -10 to 10 deg. The high normal-shock density ratio of a real gas was simulated by tests at a Mach number of 6 in air and CF4 (density ratio equal to 5.25 and 12.0, respectively). Tests were conducted in air at Mach 6 and 10 and in CF4 at Mach 6 to examine the effects of Mach number, Reynolds number, and normal-shock density ratio. Changes in Mach number from 6 to 10 in air or in Reynolds number by a factor of 4 at Mach 6 had a negligible effect on lateral and directional stability characteristics. Variations in normal-shock density ratio had a measurable effect on lateral and directional aerodynamic coefficients, but no significant effect on lateral and directional stability characteristics. Tests in air and CF4 indicated that the configuration was laterally and directionally stable through the test range of angle of attack.
Document ID
19930019977
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Micol, John R. (NASA Langley Research Center Hampton, VA, United States)
Wells, William L. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
NAS 1.15:4435
L-17154
NASA-TM-4435
Accession Number
93N29166
Funding Number(s)
PROJECT: RTOP 506-40-41-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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