HYPERSONIC PROPULSION INLETS FOR NASP APPLICATIONS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$485,000.00
Award Year:
1988
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
5186
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Vra Inc.
Post Office Box 50, Blacksburg, VA, 24060
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
DR. CLARK H. LEWIS
INVESTIGATOR
() -
Research Institution:
n/a
Abstract
OVER THE PAST SEVERAL YEARS, IT HAS BEEN CLEARLY DEMONSTRATED THAT DEVELOPMENT OF TRANSATMOSPHERIC VEHICLES, SUCH AS THE NATIONAL AEROSPACE PLANE (NASP), WILL BE NECESSARY FOR A SUCCESSFUL SPACE-DEFENSE SYSTEM. IT IS ACCEPTED THAT THE DESIGN AND ANALYSIS OF SUCH VEHICLES WILL RELY HEAVILY UPON A DATA BASE GENERATED USING CFD TECHNIQUES. ACCURATE PREDICTIONS OF THE FLOWFIELD/CHEMISTRYLEADING UP TO AND THROUGH THE HYPERSONIC PROPULSION INLET WILL BE ESSENTIAL FOR RELIABLE PERFORMANCE/EFFICIENCY/TRADE ANALYSES OF THE PROPULSION CYCLE. IN PHASE I OF THIS EFFORT, WE WILL DEVELOP A THREE-DIMENSIONAL NON-EQUILIBRIUM PNS SCHEME FOR PREDICTING THE EXTERNAL FLOW OVER TYPICAL NASP-TYPE CONFIGURATIONS. THIS WILL PROVIDE A RELIABLE PREDICTION OF THE FLOWFIELD/CHEMISTRY ENTERING THE PROPULSION INLET. THE BASIC SOLUTION ALGORITHM IS INHERENTLY STABLE AND DOES NOT REQUIRE ANY SUB-LAYER APPROXIMATION. IN PHASE II OF THE EFFORT WE WILL EXTEND THIS PNS SCHEME TO PREDICT AXIALLY ATTACHED THREE-DIMENSIONAL NONEQUILIBRIUM INTERNAL INLET FLOWS.

* information listed above is at the time of submission.

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