Gas turbine engine with free turbine inlet flow control

Details Gas turbine engine with free turbine inlet flow control Gas turbine engine with free turbine inlet flow control

1991-02-25

1992-11-17

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 392, F02C 918

Patent

active

051632861

ABSTRACT:
A gas turbine engine comprised of a gas generator in flow series arrangement with a free turbine is provided, that includes a bleed port disposed between the gas generator and the free turbine. The flow of hot gas through the free turbine is controlled by a valve operably disposed in a duct downstream of the bleed port. The gas turbine engine can rapidly change its power output by first bleeding a portion of the hot gas exiting the gas generator overboard, and then increasing or decreasing the amount of bleed flow, thereby producing rapid changes in the free turbine's output.

REFERENCES:
patent: 2529973 (1950-11-01), Sedille et al.
patent: 3216712 (1965-11-01), Dunkak
patent: 3255586 (1966-06-01), Hennig et al.
patent: 3283497 (1966-11-01), Kaplan

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