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Effect of the Acceleration of Elongated Bodies of Revolution Upon the Resistance in a Compressible FlowThe problem of the motion of an elongated body of revolution in an incompressible fluid may, as is known, be solved approximately with the aid of the distribution of sources along the axis of the body. In determining the velocity field, the question of whether the body moves uniformly or with an acceleration is no factor in the problem. The presence of acceleration must be taken into account in determining the pressures acting on the body. The resistance of the body arising from the accelerated motion may be computed either directly on the basis of these pressures or with the aid of the so-called associated masses (inertia coefficients). A different condition holds in the case of the motion of bodies in a compressible gas. In this case the finite velocity of sound must be taken into account.
Document ID
20050029447
Acquisition Source
Langley Research Center
Document Type
Other - NACA Technical Memorandum
Authors
Frankl, F. I.
Date Acquired
August 22, 2013
Publication Date
May 1, 1949
Publication Information
Publication: Prikladnaya Matematika I Mekhanika
Volume: 10
Issue: 4
Subject Category
Aerodynamics
Report/Patent Number
NACA-TM-1230
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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