On-board aircraft engine starting apparatus

Details On-board aircraft engine starting apparatus On-board aircraft engine starting apparatus

1981-03-18

1984-07-24

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Different fluids

60 3933, F02C 726, F02G 300

Patent

active

044611439

ABSTRACT:
A starting power source is connected to a jet engine of an aircraft by alternative drive trains having different mechanical advantages, each associated with a clutch. The clutches are centrally supplied with cooling fluid and the discs and plates of the clutches are grooved to promote outward migration of the fluid resulting in a thin shear film of fluid on the opposing clutch surfaces to permit a soft, gradual engagement. It is possible to start the engine with only a single shift which occurs after the ignition point has been reached and during the assist phase of the starting procedure. The invention can be applied to aircraft having more than one engine.

REFERENCES:
patent: 2838913 (1958-06-01), Peterson
patent: 2939324 (1960-06-01), Gilbert et al.
patent: 3290963 (1966-12-01), Oldfield et al.
patent: 3485041 (1969-12-01), Evans
patent: 3982618 (1976-09-01), Horsch
patent: 3983693 (1976-10-01), Werner
patent: 4291794 (1981-09-01), Bauer

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