Turbopump Cavitation Tools

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9300-08-C-2001
Agency Tracking Number: F071-204-0275
Amount: $749,900.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: AF071-204
Solicitation Number: 2007.1
Small Business Information
COMBUSTION RESEARCH & FLOW TECHNOLOGY, I
6210 Keller's Church Road, Pipersville, PA, 18947
DUNS: 929950012
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ashvin Hosangadi
 Principal Scientist
 (215) 766-1520
 hosangad@craft-tech.com
Business Contact
 Brian York
Title: Principal Scientist & Tre
Phone: (215) 766-1520
Email: york@craft-tech.com
Research Institution
N/A
Abstract
Next generation liquid rocket systems envision novel designs for turbopumps that can operate at high suction speeds (i.e. low inlet pressures), and can be throttled over a wide range of low, off-design flow conditions. This is an extremely demanding flow regime where performance loss and damage from cavitation instabilities can be catastrophic since they can generate large amplitude pressure fluctuations. However, the ability of current analytical or CFD tools to reliably predict unsteady cavitation dynamics is not mature particularly for cryogens where temperature fluctuations can couple with the pressure variations. The innovation proposed here is to extend current computational capabilities to analyze mean solutions and head drop-off, to an unsteady framework that can predict amplitudes and frequencies of dynamic pressure loads within a cryogenic fluid environment with temperature fluctuations. A key aspect of this proposal is an extensive test program that will be conducted in the Phase II effort to provide dynamic load magnitudes in a regime where thermal effects are important. Hence, the resulting product will be a well-validated and reliable analysis tool, CRUNCH CFD®, that can be used to predict unsteady, off-design performance of liquid rocket turbopumps.

* information listed above is at the time of submission.

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