Variable Cycle Engines for Advanced Supersonic Transports Pratt and Whitney Aircraft Div., United Technologies Corporation

Format:

Conference/Event

Author/Creator:

Howlett, Robert A., author.

Conference Name:

Aerospace Engineering and Manufacturing Meeting (1975-11-17 : Los Angeles, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1975

Summary:

Variable Cycle Engines being studied for advanced commercial supersonic transports show potential for significant environmental and economic improvements relative to 1st generation SST engines. The two most promising concepts are: a Variable Stream Control Engine and a Variable Cycle Engine with a rear flow-control valve. Each concept utilizes variable components and separate burners to provide independent temperature and velocity control for two coannular flow streams. Unique fuel control techniques are combined with cycle characteristics that provide low fuel consumption, similar to a turbojet engine, for supersonic operation. This is accomplished while retaining the good subsonic performance features of a turbofan engine. A two-stream coannular nozzle shows potential to reduce jet noise to below FAR Part 36 without suppressors. Advanced burner concepts have the potential for significant reductions in exhaust emissions. In total, these unique engine concepts have the potential for significant overall improvements to the environmental and economic characteristics of advanced supersonic transports

Notes:

Vendor supplied data

Publisher Number:

751086

Access Restriction:

Restricted for use by site license