Enhanced Fuel-Lubricated Bearing for Turbine Engine Applications

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-08-C-2848
Agency Tracking Number: F071-184-1878
Amount: $749,661.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: AF071-184
Solicitation Number: 2007.1
Small Business Information
ALLCOMP, INC.
209 Puente Ave., City of Industry, CA, 91746
DUNS: 026249487
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Wei Shih
 President
 (626) 369-1273
 weishih@aol.com
Business Contact
 Wei Shih
Title: President
Phone: (626) 369-1273
Email: weishih@aol.com
Research Institution
N/A
Abstract
There is a constant need to reduce the size and part counts of state-of-the-art (SOA) turbine engines. One already demonstrated solution, which offers significant weight and cost payoffs, uses advanced fuel-lubricated (fuel-lubed) bearing. The challenge associated with fuel lubrication is that the fuel does not provide nearly as much lubricity to the bearing components as the traditional oil lubrication does. As a result, fuel-lubed hybrid bearings typically use advanced self-lubricating, fuel compatible C-C cages and Si3N4 rolling elements to reduce bearing heat generation and to improve overall bearing performance. To further improve the bearing performance, particularly when the engine bearings are required to operate at extreme conditions of load, speed, and temperature, antiwear additive has to be added to fuel to enhance its tribological properties. In this program, we propose to better understand the fundamental tribological behavior of friction pairs under fuel lubrication, and to develop enhanced concepts addressing performance and reliability issues related to fuel-lubricated bearings for both short and long term applications.

* information listed above is at the time of submission.

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