Power plants – Reaction motor – Interrelated reaction motors
Patent
1975-06-16
1977-03-08
Gordon, Clarence R.
Power plants
Reaction motor
Interrelated reaction motors
60262, 60242, 60261, F02K 304
Patent
active
040106080
ABSTRACT:
One or more of the aft stages of the fan section of a gas turbine engine are rotated by the high pressure turbine of a gas generator and the remainder of the fan stages are rotated by a low pressure turbine downstream of the gas generator. This arrangement divides the fan work between the low and high pressure turbines to permit more efficient utilization of the total available turbine capacity, reduction in low pressure turbine workload, increased aft fan stage pressure ratio capability and greater flow and pressure ratio modulation potential for a split fan engine. The invention has a wide range of application for various turbofan configurations including separated and/or mixed flow turbofan engines with separated or close coupled fan sections.
REFERENCES:
patent: 2831627 (1958-04-01), Brunner
patent: 3296800 (1967-01-01), Keenan
patent: 3368352 (1968-02-01), Hewson
patent: 3688504 (1972-09-01), Hutchinson
patent: 3886737 (1975-06-01), Grieb
General Electric Company
Gordon Clarence R.
Johnson, Jr. James W.
Lawrence Derek P.
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