Accession Number : AD0920069

Title :   Boundary-Layer Studies on Spinning Bodies of Revolution.

Descriptive Note : Final rept.,

Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Sturek, Walter B.

Report Date : MAY 1974

Pagination or Media Count : 22

Abstract : An experimental investigation of the effects of spin induced distortion of the boundary-layer on a spinning cone and tangent-ogive-cylinder model for small angle of attack 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 models 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. Strain gage balance measurements of Magnus and normal force were made for three significantly different boundary-layer configurations--predominately laminar, predominately turbulent, tripped to turbulent--and confirm the pronounced sensitivity of Magnus to boundary-layer configuration. (Author)

Descriptors :   (*BODIES OF REVOLUTION, MAGNUS EFFECT), (*BOUNDARY LAYER, BODIES OF REVOLUTION), (*SPIN STABILIZED AMMUNITION, AERODYNAMIC CHARACTERISTICS), ARTILLERY, ANGLE OF ATTACK, MACH NUMBER, LAMINAR BOUNDARY LAYER, TURBULENT BOUNDARY LAYER, THREE DIMENSIONAL FLOW, SUPERSONIC FLOW, FLOW VISUALIZATION, SHADOWS, AERODYNAMIC CONFIGURATIONS, AERODYNAMIC STABILITY, OGIVES, VISCOUS FLOW, WIND TUNNEL MODELS, WIND TUNNEL TESTS, BOUNDARY LAYER TRANSITION.

Subject Categories : Ammunition and Explosives
      Armor
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE