
Accession Number : AD0682956
Title : PRESSURE DISTRIBUTION ON A 5.6 DEGREE BLUNT CONE AT MACH 14.
Descriptive Note : Final rept.,
Corporate Author : AEROSPACE RESEARCH LABS WRIGHTPATTERSON AFB OHIO
Personal Author(s) : Friberg,Eric G.
Report Date : NOV 1968
Pagination or Media Count : 77
Abstract : The pressure distribution around a 5.6 deg halfangle cone with various nose bluntness ratios was measured in a 20inch hypersonic wind tunnel at Mach 14 and Re 160,000. An empirical expression for the circumferential pressure distribution at small angles of attack is derived which allows the integration of normal pressure components in closed form. Correlation of the pressure data along the most windward ray at angle of attack by means of the tangent cone concept is shown to be possible if viscous interaction is negligible. For the most windward ray of the 5.6 deg cone this is the case for positive angles of attack only. At negative angles of attack the viscous effects dominate and prevent the correlation. The pitching moment derivative was calculated for several noses on the basis of the measured pressure distributions at angles of attack. (Author)
Descriptors : (*CONICAL BODIES, HYPERSONIC CHARACTERISTICS), (*BLUNT BODIES, PRESSURE), DISTRIBUTION, REYNOLDS NUMBER, ANGLE OF ATTACK, INTERACTIONS, CORRELATION TECHNIQUES, VISCOSITY, PITCH(MOTION), MOMENTS
Subject Categories : Aerodynamics
Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE