Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1986-07-11
1987-06-23
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
F02C 310
Patent
active
046742760
ABSTRACT:
An inertial coupling is provided for substantially preventing rotational speed variations of a free power turbine in a multiple shaft gas turbine engine in response to a transient load condition. The inertial coupling comprises a gear assembly having first and second rotatable components driven respectively by the free power turbine and by the gas generator section of the gas turbine engine to cooperatively drive a free-wheeling inertial mass. The inertial mass is rotated at a constant speed during steady-state engine operation and provides sufficient rotational inertia during a transient load condition to couple the free power turbine temporarily to the gas generator section to maintain free power turbine speed substantially constant during adjustment of an engine fuel control to accommodate the changed engine load.
REFERENCES:
patent: 801730 (1905-10-01), Lofton
patent: 2364411 (1944-12-01), White
patent: 3507113 (1970-04-01), Herrmann et al.
patent: 3546879 (1970-12-01), Hass
patent: 3874251 (1975-04-01), Lapitsky
patent: 4282709 (1981-08-01), Kronsgard
Casaregola Louis J.
Miller Albert J.
Miller Terry L.
The Garrett Corporation
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