Accession Number : ADP006208

Title :   Gear Systems for Advanced Turboprops,

Corporate Author : GENERAL MOTORS CORP INDIANAPOLIS IN ALLISON GAS TURBINE DIV

Personal Author(s) : Wagner, Douglas A.

Report Date : SEP 1987

Pagination or Media Count : 9

Abstract : A new generation of transport aircraft will be powered by efficient, advanced turboprop propulsion systems. Systems that develop 5000 to 15,000 horsepower have been studied. Reduction gearing for these advanced propulsion systems is discussed in this paper. Allison Gas Turbine Division experience with the 5000 horsepower reduction gearing for the T56 engine is reviewed and the impact of that experience on advanced gear systems is considered. Gear system arrangements are analyzed, including single- and counter-rotation types. The reliability needs for component design and development are also considered. Allison's experience and their research serve as a basis on which to characterize future gear systems that emphasize low cost and high reliability.

Descriptors :   *TURBOPROP ENGINES, *GEARS, TRANSPORT AIRCRAFT, GAS TURBINES, REDUCTION GEARS, LOW COSTS, RELIABILITY, GEARS, HIGH RELIABILITY, PROPULSION SYSTEMS, RELIABILITY, TRANSPORT AIRCRAFT, TURBOPROP ENGINES.

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE