Turbofan emergency generator

Power plants – Combustion products used as motive fluid – With safety device

Reexamination Certificate

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Details

C060S226100, C060S262000, C060S792000, C060S802000, C060S772000

Reexamination Certificate

active

07841163

ABSTRACT:
A turbine engine emergency power system includes low and high pressure spools, the lower pressure spool including a low pressure compressor. A turbofan is coupled to the low pressure spool. The turbofan drives the low pressure spool in a windmill condition in which the low pressure turbine fails to provide rotational drive to the turbofan. A generator is rotationally driven by the low pressure spool in the windmill condition. A gear train is used to increase the speed of the generator in one example. In one example embodiment, a centrifugal clutch is used to selectively decouple the generator from the low pressure spool at a predetermined engine speed, which corresponds to normal operating speeds when the turbine engine is under power.

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