LOW DENSITY FLOW EFFECTS FOR HYPERVELOCITY VEHICLES

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 4562
Amount: $110,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Vigyan Research Associates Inc
28 Research Dr, Hampton, VA, 23666
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 R N Gupta
 (804) 865-0794
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE HYPERSONIC VEHICLES FLYING AT HIGH ALTITUDES OPERATE IN A FLOW REGIME WHERE THE NONCONTINUUM EFFECTS NEAR THE SURFACE AND FINITE SHOCK THICKNESS DUE TO LOW-DENSITY MAKE THE CONVENTIONAL CONTIMUUM TECHNIQUES GROSSLY INADEQUATE. CHEMICAL NONEQUILIBRIUM IS ALSO IMPORTANT UNDER THE LOW-DENSITY FLOW CONDITIONS. UNTIL RECENTLY NOT MUCH WORK HAS BEEN DONE TO EVALUATE DEFICIENCIES OF THE EXISTING CONTINUUM TECHNIQUES TO ANALYSE THE LOW-DENSITY FLOWS AND FIND MEANS TO REMOVE THEM. RECENTLY COMPLETED DETAILED WORK BY THE PRINCIPLE INVESTIGATOR SUGGESTS THE WAYS AND MEANS TO EVOLVE AN EFFICIENT AND PRACTICAL CONTINUUM COMPUTATIONAL TECHNIQUE. THIS TECHNIQUE WOULD BE CAPABLE OF HANDLING CHEMICAL NONEQUILIBRIUM, FINITE SURFACE CATALYCITY, AND HIGHLY TEMPERATURE-DEPENDENT TRANSPORT AND THERMODYNAMIC PROPERTIES FOR DISSOCIATED AIR UNDER THE LOW-DENSITY FLIGHT CONDITIONS.

* information listed above is at the time of submission.

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