Physics-Based Pneumatic Hammer Instability Model

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,974.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
NNM06AA61C
Award Id:
78010
Agency Tracking Number:
053964
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
140 Intracoastal Pointe, Suite 301, Jupiter, FL, 33477
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
048159342
Principal Investigator:
PhilipPelfrey
Principal Investigator
(561) 746-3317
ppelfrey@fttinc.com
Business Contact:
JamesBrostmeyer
Operations Chief
(561) 746-3317
jlbrostmeyer@fttinc.com
Research Institute:
n/a
Abstract
Florida Turbine Technologies (FTT) proposes to conduct research necessary to develop a physics-based pneumatic hammer instability model for hydrostatic bearings operating in a compressible fluid. The innovation of the resulting model is to account for the extreme density, compressibility, and non-uniform pressure variations found in highly turbulent rocket engine liquid hydrogen turbopump hydrostatic bearings as well as the variations resulting from 3-D effects such as tangential and/or axial injection, which are ignored in the pneumatic hammer instability criteria currently used throughout industry. The ability to accurately predict the stability of highly turbulent, highly compressible liquid hydrogen hydrostatic bearings incorporating 3-D effects is essential for NASA to achieve IHPRPT objectives through the use of smaller, faster turbopumps. This project will enable the accurate prediction of bearing stability, resulting in higher performing bearings that enable smaller operating clearances for improved turbopump and system-level performance.

* information listed above is at the time of submission.

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