Performance of hybrid ball bearings in oil and jet fuel
- General Motors Corp., Allison Gas Turbine Div., Indianapolis, IN (United States)
A 308-size hybrid ball bearing, with ceramic balls and steel rings, was tested using a diester oil and gas turbine fuel as lubricants at several speeds and loads. Heat generation data from this test work was then correlated with the heat generation model from a widely used computer code. The ability of this hybrid split inner ring bearing design to endure thrust reversals, which are expected in many turbine applications, was demonstrated. Finally, the bearing was successfully endurance tested in JP-10 fuel for 25 hours at 7560 N axial load and 36,000 rpm. This work has successfully demonstrated the technology necessary to use fuel-lubricated hybrid bearings in limited-life gas turbine engine applications such as missiles, drones, and other unmanned air vehicles (UAVs). In addition, it has provided guidance for use in designing such bearing systems. As a result, the benefits of removing the conventional oil lubricant system, i.e., design simplification and reduced maintenance, can be realized. 6 refs.
- OSTI ID:
- 7242623
- Journal Information:
- ASLE Transactions (American Society of Lubrication Engineers); (United States), Vol. 35:3; ISSN 0569-8197
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BALL BEARINGS
DESIGN
LUBRICATION
GAS TURBINE ENGINES
JET ENGINE FUELS
LUBRICATING PROPERTIES
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
HEATING
LUBRICATING OILS
MAINTENANCE
PERFORMANCE TESTING
BEARINGS
ENGINES
EVALUATION
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LUBRICANTS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
SIMULATION
TESTING
330103* - Internal Combustion Engines- Turbine