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Low-speed aerodynamic characteristics of a 1/8-scale X-29A airplane model at high angles of attack and sideslipA 1/8-scale model of the X-29A airplane was tested in the Ames 12-Foot Pressure Wind Tunnel at a Mach number of 0.20 and Reynolds numbers of 0.13 x 10 to the 6th power to 2.00 x 10 to the 6th power based on a fuselage forebody depth of 0.4 ft, For the test series presented herein, the angle of attack ranged from 40 deg. to 90 deg. and the angle of sideslip ranged from -10 deg. to 30 deg. for the erect attitude. Tests with the model inverted covered angles of attack from -40 deg. to -90 deg. and angles of sideslip from -30 deg. to 10 deg. Data were obtained for the basic design and for several forebody strakes. An alternate forebody design was also tested. The results provided information for selection of forebody strakes for compensation of Reynolds number effect on the 1/25-scale free-spinning model tested in the Langley Spin Tunnel.
Document ID
19860022060
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Whipple, R. D. (NASA Langley Research Center Hampton, VA, United States)
Ricket, J. L. (NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
September 5, 2013
Publication Date
September 1, 1986
Subject Category
Aerodynamics
Report/Patent Number
L-15919
NAS 1.15:87722
NASA-TM-87722
Accession Number
86N31532
Funding Number(s)
PROJECT: RTOP 505-43-13-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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