Spiked Blunt Bodies in Supersonic Flow

Released on by Hyman Harvey Album
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  • Spiked Blunt Bodies in Supersonic Flow Book Detail

  • Author : Hyman Harvey Album
  • Release Date : 1961
  • Publisher :
  • Genre : Aerodynamics, Supersonic
  • Pages : 164
  • ISBN 13 :
  • File Size : 36,36 MB
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Spiked Blunt Bodies in Supersonic Flow by Hyman Harvey Album PDF Summary

Book Description: The force and moment characteristics of spiked bodies with hemispherical, hemispherical-flat, and flat noses were determined in a supersonic wind tunnel at angles of attack from zero to 10 degrees. The afterbodies were right circular cylinders. A fineness ratio of 3 was maintained for all of the basic bodies. The spikes were of five different configurations and ranged in length from 0.75 to 2.0 body diameters. Freestream conditions included Mach numbers from 2.0 to 3.0 and Reynolds numbers from 300,000 to 900,000 (based on body diameter). It was found that the spikes greatly reduced the zero-angle drag, made the drag extremely sensitive to angle of attack variations, substantially increased the lift, and also increased the normal force. The body nose shape proved to be a critical factor in determining the magnitude of these characteristics and whether or not the spikes would have a stabilizing effect on the body pitching moment characteristics. (Author).

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