1976
DOI: 10.2514/3.7292
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Flight-test base pressure measurements in turbulent flow

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Cited by 11 publications
(4 citation statements)
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“…During in-flight tests, a spark shadowgraph of a nine-degree half-angle cone with sharp nose at a freestream Mach number of 4.81 revealed many detailed features of the flow in the shock layer, the boundary layer, and the base region [4]. Mach number dependence of base pressure were experimentally investigated by Merz et al [5] at subsonic speeds, Chow [6] at transonic speeds, and Bulmer [7] and Zarin [8] at supersonic and hypersonic speeds. These experimental investigations demonstrated that the base pressure coefficient is relatively constant at freestream Mach numbers between 0.0 and 0.8, but begins to fall rapidly as the flow approaches sonic speed.…”
mentioning
confidence: 98%
“…During in-flight tests, a spark shadowgraph of a nine-degree half-angle cone with sharp nose at a freestream Mach number of 4.81 revealed many detailed features of the flow in the shock layer, the boundary layer, and the base region [4]. Mach number dependence of base pressure were experimentally investigated by Merz et al [5] at subsonic speeds, Chow [6] at transonic speeds, and Bulmer [7] and Zarin [8] at supersonic and hypersonic speeds. These experimental investigations demonstrated that the base pressure coefficient is relatively constant at freestream Mach numbers between 0.0 and 0.8, but begins to fall rapidly as the flow approaches sonic speed.…”
mentioning
confidence: 98%
“…The coefficient of molecular viscosity is evaluated in the flow solver employing Sutherland's formula. The flow is assumed to be laminar, which is consistent with experimental results of Cassanto [37] and Bulmer [42].…”
Section: Numerical Algorithm 51 Governing Fluid Equationsmentioning
confidence: 55%
“…The base pressure measurements on a 9° semi-cone angle at Mach range of 3.50-9.20 have been carried out by Zarin [41]. Flight-test base pressure measurements were conducted by Bulmer [42] for Mach number range of 0.5-15. The shapes of the Viking, Mars Path Finder (MPF), Mars Exploration Rovers (MER), Phoenix, Mars Science Laboratory (MSL), Mu-Science Engineering Satellite (MUSES-C) are similar to the Apollo capsule [43].…”
Section: Review Of the Base Pressure Datamentioning
confidence: 99%
“…For values of C 1 above 0.98 (M 1 > 15), one could account for the curvature of the correlation curve (dashed line).•Is it possible to scale base pressures for cones in such a way as to correlate them with the cylinder data? Because the flight test data for 0c = 9°( Bulmer 1976) form the most complete set of turbulent, hypersonic base pressure data available, they were used for the initial part of this phase. Bulmer's data for two different trajectories are plotted inFig.…”
mentioning
confidence: 99%