Accession Number:

AD0762564

Title:

Boundary Layer Studies on a Spinning Cone

Descriptive Note:

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1973-05-01

Pagination or Media Count:

47.0

Abstract:

An experimental investigation of the effects of spin induced distortion of the boundary layer on a spinning 10 degree half angle cone at Mach 2, 3 and 4 is reported. The profile of the location of boundary layer transition has been determined completely about the surface of the cone model from spark shadowgraphs. These spark shadowgraphs were taken with the model mounted on an offset strut which was rolled incrementally in azimuth to reveal the entire surface of the model. The profile of the boundary layer thickness at the base of the cone has also been determined from the spark shadowgraphs. Strain gage balance measurements of Magnus and normal force were made for three significantly different boundary layer configurations and confirm the extreme sensitivity of Magnus to boundary layer configuration.

Subject Categories:

  • Guided Missile Dynamics, Configurations and Control Surfaces
  • Ammunition and Explosives
  • Armor

Distribution Statement:

APPROVED FOR PUBLIC RELEASE