Effects of Reynolds Number and Body Corner Radius on Aerodynamic Characteristics of a Space Shuttle-type Vehicle at Subsonic Mach Numbers

Effects of Reynolds Number and Body Corner Radius on Aerodynamic Characteristics of a Space Shuttle-type Vehicle at Subsonic Mach Numbers
Author: Leland Howard Jorgenson
Publisher:
Total Pages: 44
Release: 1972
Genre: Aerodynamics
ISBN:

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Static aerodynamic forces and moments were measured to study the effects of Reynolds number and body corner radius on the aerodynamic characteristics of a straight wing space shuttle orbiter at subsonic speeds. A 0.02-scale model was tested at Mach numbers from 0.3 to 0.9 and Reynolds numbers from about 600,000 to 3 million, based on body width. The body alone and the body with its wing and horizontal tail attached were tested at angles of attack from 35 to 75 degrees. The effects of rounding the body corners at the junctures connecting the bottom and sides were investigated for corner radii from 0 to 8.5 percent of the body width. At low subsonic Mach numbers (free stream Mach number approximately equal 0.3) the aerodynamic characteristics are affected significantly by changes in Reynolds number and body corner radius. With increase in Mach number to free stream Mach number = 0.9 the effect of Reynolds number seems to vanish, but a significant effect of body corner radius remains.

Aerodynamic and Flow-visualization Studies of Two Delta-wing Entry Vehicles at a Mach Number of 20.3

Aerodynamic and Flow-visualization Studies of Two Delta-wing Entry Vehicles at a Mach Number of 20.3
Author: James P. Arrington
Publisher:
Total Pages: 80
Release: 1973
Genre: Aerodynamics, Hypersonic
ISBN:

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The longitudinal, lateral, and directional aerodynamic characteristics of two space shuttle concepts have been obtained in helium for operational flight Reynolds numbers at angles of attack from minus 10 to 55 deg. Included are elevon control deflections, roll control due to ailerons, and the effects of a nose modification. Selected results were compared with those derived from tangent-cone and Newtonian theories. Also included are results of a flow-visualization study consisting of electron-beam-illuminated flow and surface oil-flow patterns.