Reduction gear assembly and a gas turbine engine

Details Reduction gear assembly and a gas turbine engine Reduction gear assembly and a gas turbine engine

1990-06-08

1992-04-28

Bertsch, Richard A.

Power plants

Reaction motor

Interrelated reaction motors

60 3908, 184 611, F02K 302, F01M 910

Patent

active

051076764

ABSTRACT:
A turbofan gas turbine engine (10) comprises a fan rotor (32) driven by a core engine (11) via a shaft (36) and a reduction gear (38). A lubricant source (63) is arranged to supply lubricant to the reduction gear (38) to lubricate gear teeth and bearings (52) in the reduction gear (38). An annular collector (76) is positioned coaxially around the reduction gear (38) and is secured to the fan rotor (32) and is driven by the reduction gear (38). The annular collector (76) is arranged to collect lubricant leaving the reduction gear (38) on its inner surface. A number of static scoops (82) collect lubricant from adjacent the inner surface of the annular collector (76) to return the lubricant to valves (86). The valves (86) allow the lubricant to return to the lubricant source (63) in normal operation. If the lubricant source (63) fails to supply lubricant to the reduction gear (38) the valve (86) returns the lubricant to the reduction gear (38) to allow the reduction gear (38) to operate for a period of time without a supply of lubricant.

REFERENCES:
patent: 4782658 (1988-11-01), Perry
patent: 4930601 (1990-06-01), Leidecker et al.

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