Accession Number : ADA336868

Title :   Experimental Studies of Laminar, Transitional, and Turbulent Hypersonic Flows Over Elliptic Cones at Angles of Attack

Descriptive Note : Final rept. 1 Apr 95-30 Nov 97

Corporate Author : CALSPAN UB RESEARCH CENTER BUFFALO NY

Personal Author(s) : Holden, Michael S.

PDF Url : ADA336868

Report Date : JAN 1998

Pagination or Media Count : 58

Abstract : An experimental study has been performed to examine the three-dimensional characteristics of laminar, transitional and turbulent flow over an elliptic cone lifting body configuration. The experimental studies were performed at Mach numbers between 8 and 12 at Reynolds numbers, based on model length from 5 x 10(exp 5) to 5 x 10(exp 6). Detailed measurements of the distribution of heating and pressure were made along the leading edges and on the windward and leeward surfaces of the model with over 200 high-frequency, thin-film heat transfer gages and piezoelectric high-frequency pressure transducers. Measurements were also performed using temperature sensitive paints to further delineate the properties of the three-dimensional transitional flow. Schlieren photographs were also obtained of the transitional flow field over the models. Flowfield calibration measurements were made in the LENS facility with intrusive pitot and total heating transducers and nonintrusive electron beam, and infrared radiometer techniques. These data have been incorporated into the CUBRC/AFOSR Hypersonic Database which has been modified to run on the Windows platform.

Descriptors :   *TURBULENT FLOW, *LAMINAR FLOW, *HYPERSONIC FLOW, DATA BASES, PRESSURE TRANSDUCERS, ANGLE OF ATTACK, FLOW FIELDS, MACH NUMBER, BOUNDARY LAYER TRANSITION, HYPERSONIC CHARACTERISTICS, PRESSURE DISTRIBUTION, REYNOLDS NUMBER, SCHLIEREN PHOTOGRAPHY, THREE DIMENSIONAL FLOW, LIFTING BODIES, PIEZOELECTRIC TRANSDUCERS, LIFTING SURFACES.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE