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An Analysis of Base Pressure at Supersonic Velocities and Comparison with ExperimentIn the first part of the investigation an analysis is made of base pressure in an inviscid fluid, both for two-dimensional and axially symmetric flow. It is shown that for two-dimensional flow, and also for the flow over a body of revolution with a cylindrical sting attached to the base, there are an infinite number of possible solutions satisfying all necessary boundary conditions at any given free-stream Mach number. For the particular case of a body having no sting attached only one solution is possible in an inviscid flow, but it corresponds to zero base drag. Accordingly, it is concluded that a strictly inviscid-fluid theory cannot be satisfactory for practical applications. An approximate semi-empirical analysis for base pressure in a viscous fluid is developed in a second part of the investigation. The semi-empirical analysis is based partly on inviscid-flow calculations.
Document ID
19930090963
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Chapman, Dean R
Date Acquired
September 6, 2013
Publication Date
January 1, 1951
Report/Patent Number
NACA-TR-1051
Report Number: NACA-TR-1051
Accession Number
93R20253
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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