Accession Number : AD0894578

Title :   An Investigation of Air Bearings for Gas Turbine Engines.

Descriptive Note : Summary rept. on Phase 1,

Corporate Author : MECHANICAL TECHNOLOGY INC LATHAM NY

Personal Author(s) : Waldron, Warren D. ; Young, William E. ; Curwen, Peter W.

Report Date : DEC 1971

Pagination or Media Count : 393

Abstract : Due to ascending performance conditions and accompanying high rotational speeds, increasingly severe operating requirements will be imposed on main engine bearings and seals. Conventional oil lubrication techniques may not be adaptable to the next generation of small engines. This report presents a summary of the results of work performed during Phase I of an investigation of air bearings for gas turbine engines. Results of a study of the significant effects of engine size on the design feasibility of air bearings show that the engine size over a range of from 2 to 5 lb/sec design-point air flow is not a significant factor with respect to air-bearing feasibility. However, the types of compressor and turbine components selected as well as their arrangement will influence the feasibility.

Descriptors :   (*GAS BEARINGS, GAS TURBINES), AIRCRAFT ENGINES, LUBRICATION, JOURNAL BEARINGS, NICKEL ALLOYS, COATINGS, THRUST BEARINGS, TITANIUM ALLOYS, ROTOR BLADES(TURBOMACHINERY), EFFICIENCY, COMPRESSORS, AIR, THERMODYNAMICS, WEIGHT, PRESSURE, CENTRIFUGAL COMPRESSORS, POWER.

Subject Categories : Machinery and Tools
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE