Accession Number : ADA014878
Title : Boundary Layer Studies on a Spinning Tangent-Ogive-Cylinder Model
Descriptive Note : Final rept.
Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
Personal Author(s) : Sturek, Walter B
Report Date : Jul 1975
Pagination or Media Count : 47
Abstract : An experimental investigation of the Magnus effect on a seven caliber tangent-ogive-cylinder model in supersonic flow is reported. The effects of surface spin, angle of attack and Mach number on boundary-layer transition have been studied using spark shadowgraphs of the flow. These shadowgraphs were taken while the model was mounted on offset struts to enable views to be obtained of the flow completely about the circumference of the model. The Magnus and normal forces were measured using the strain-gage balance technique for different boundary layer configurations. These measurements revealed a substantial sensitivity of Magnus force to the boundary layer configuration. A preliminary comparison of the Magnus measurements to the theory of Vaughn and Reis yielded poor agreement. The data have been tabulated to facilitate their use in the evaluation of proposed theoretical models of the Magnus effect.
Descriptors : *BODIES OF REVOLUTION , *BOUNDARY LAYER , PROJECTILES , FLOW VISUALIZATION , COMPRESSIBLE FLOW , CYLINDRICAL BODIES , BALANCE , STRAIN GAGES , TANGENTS , SPINNING(MOTION) , BOUNDARY LAYER TRANSITION , OGIVES , BALLISTICS , THREE DIMENSIONAL FLOW , MAGNUS EFFECT , MEASUREMENT , MODELS
Subject Categories : Ballistics
Distribution Statement : APPROVED FOR PUBLIC RELEASE