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Physics-Based Pneumatic Hammer Instability Model, Phase I

Completed

Description

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.

Details

Technology areaMaterials, Structures, Mechanical Systems, and Manufacturing > Mechanical Systems > Mechanism-Life-Extension Systems
ProgramSmall Business Innovation Research/Small Business Tech Transfer (SBIR/STTR)
Lead organizationMarshall Space Flight Center, Huntsville, AL
Start date2006-01-24
End date2006-07-24

How to get involved

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

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