USA flag logo/image

An Official Website of the United States Government

Dynamic Transfer Function Measurements for Cavitating Pumps

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
62136
Program Year/Program:
2004 / SBIR
Agency Tracking Number:
023265
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Concepts ETI, Inc.
217 Billings Farm Road White River Jct, VT -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2004
Title: Dynamic Transfer Function Measurements for Cavitating Pumps
Agency: NASA
Contract: NNM04AA09C
Award Amount: $599,997.00
 

Abstract:

The Phase I effort demonstrated the feasibility of measuring cavitating inducer dynamic transfer functions using an upgraded Concepts NREC pump test facility. As there are no analytical tools or experimental facilities in the world today that can quantify a cavitating inducer?s dynamic transfer function, developing this capability is crucial for the safety, reliability and competitiveness of the American Space Industry. An innovative experimental technique that uses mappings of inlet and exit flow and pressure fluctuations to quantify a cavitating inducer?s dynamic transfer function is proposed. A cavitating inducer can be a source of instability in a rocket vehicle. Due to cavitation dynamics, inlet flow perturbations maybe amplified by the inducer resulting in very large flow and pressure fluctuations in the fuel system. The resulting dynamic couplings can lead to vehicle instability (POGO) as well as generate intense dynamic loadings on the turbopump. The feasibility of implementing the proposed measurement technique on an upgraded Concepts NREC water flow test loop was demonstrated in the Phase I effort. Implementation of the test loop upgrades and demonstration of the transfer function measurement technique on a scaled inducer with a historical pedigree will occur in the proposed Phase II effort.

Principal Investigator:

Karl D. Wygant
Principal Investigator
8022962321
kdw@conceptsnrec.com

Business Contact:

H. A. Keiling
Executive Vice President
8022962321
hak@conceptsnrec.com
Small Business Information at Submission:

Concepts ETI, Inc.
217 Billings Farm Road White River Jct, VT 05001

EIN/Tax ID: 020359171
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No