Power plants – Reaction motor – Method of operation
Patent
1990-02-12
1992-08-25
Bertsch, Richard A.
Power plants
Reaction motor
Method of operation
60242, 60 3907, 60271, 23926519, F02K 100
Patent
active
051408090
ABSTRACT:
A method and apparatus are disclosed for spoiling thrust from combustion gases discharged from an aircraft gas turbine engine at ground idle operating condition. The method comprises the step of positioning a secondary exhaust flap of the exhaust nozzle to form a diffuser for the combustion gases at the ground idle operating condition for maintaining attachment of the combustion gases along the secondary exhaust flaps for spoiling thrust. An exemplary and preferred exhaust nozzle is provided wherein the secondary exhaust flaps are positionable in part independently of primary exhaust flaps so that the primary and secondary flaps may be disposed together in different positions during ground idle, dry, and augmented operating conditions of the engine. Thrust spoiling allows the engine to be operated at relatively high core speeds for providing bleed-air at relatively high pressure or electrical power from a generator, or both, without attendant relatively high thrust from the engine at the ground idle operating condition.
REFERENCES:
patent: 2711217 (1957-09-01), Nightingale et al.
patent: 2846843 (1958-08-01), Clark et al.
patent: 2880575 (1959-04-01), Scialla
patent: 2926491 (1960-03-01), Hyde
patent: 3216691 (1966-05-01), Madden
patent: 3454227 (1969-07-01), Motycka
patent: 3807637 (1974-04-01), Camboulives et al.
patent: 3954225 (1976-05-01), Camboulives et al.
patent: 4037405 (1977-07-01), Huenninger et al.
patent: 4049199 (1977-09-01), Nightingale
patent: 4091613 (1978-05-01), Young
patent: 4141501 (1979-02-01), Nightingale
patent: 4141501 (1979-02-01), Nightingale
patent: 4279382 (1981-07-01), Wilson, Jr.
patent: 4392615 (1983-07-01), Madden
patent: 4463903 (1984-08-01), Nightingale
patent: 4466573 (1984-08-01), Camboulives et al.
patent: 4587806 (1986-05-01), Madden
patent: 4605169 (1986-08-01), Mayers
Irwin E. Treager, Aircraft Gas Turbine Engine Technology, 1970, 127-129.
A. Kuchar, "Variable Convergent-Divergent Exhaust Nozzle Aerodynamics," CH. 14 of Air Force Propulsion Laboratory report AFAPL-TR-78-52, 1978, pp: cover, 14, 14-i, 14-1 through 14-15.
Bertsch Richard A.
General Electric Company
Richman Howard R.
Squillaro Jerome C.
LandOfFree
Exhaust nozzle idle thrust spoiling method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Exhaust nozzle idle thrust spoiling method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust nozzle idle thrust spoiling method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-377055