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Computational Modeling in Support of High Altitude Testing Facilities

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Combustion Research and Flow Technology, Inc.
6210 Kellers Church Road Pipersville, PA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Computational Modeling in Support of High Altitude Testing Facilities
Agency: NASA
Contract: NNX07CA86P
Award Amount: $99,992.00


Simulation technology plays an important role in rocket engine test facility design and development by assessing risks, identifying failure modes and predicting anomalous behavior of critical systems. Advanced numerical tools assume greater significance in supporting testing and design of high altitude testing facilities because of the greater inter-dependence and synergy in the functioning of the different sub-systems. This is especially true for J2-X testing because of a challenging operating envelope linked to variable throttle conditions at relatively low chamber pressures. Facility designs require a complex network of diffuser ducts, steam ejector trains, fast operating valves, spray nozzles and flow diverters that need to be characterized for steady state performance. More importantly, integrated facility designs will also have to be evaluated for startup/shutdown transients that can trigger engine unstart modes leading to catastrophic failure. The proposed innovation expands on the multi-element unstructured CFD which has been validated for complex valve/feed systems and high pressure propellant delivery systems used in engine and component test stands at NASA SSC. The focus here will be on extending this capability to include advanced models for supersonic diffuser design, steam ejector performance, spray nozzle cooling efficiency, plume aspiration dynamics and isolation valve operation.

Principal Investigator:

Vineet R. Ahuja
Principal Investigator

Business Contact:

Paula R. Schachter
Business Official
Small Business Information at Submission:

Combustion Research and Flow Technology
6210 Keller's Church Road Pipersville, PA 18947

EIN/Tax ID: 232759059
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No