Rotor brake and windmilling lubrication system for geared...

Details Rotor brake and windmilling lubrication system for geared... Rotor brake and windmilling lubrication system for geared...

2006-10-25

2010-12-14

Cuff, Michael (Department: 3741)

Power plants

Combustion products used as motive fluid

With lubricators

C184S006110, C384S473000

Reexamination Certificate

active

07849668

ABSTRACT:
A journal bearing provides lubrication to planetary gears during windmilling operation of a fan section. A primary oil pump provides oil from an oil supply during driven operation of the fan and a secondary oil pump driven by a generator provides oil during windmilling operation of the fan. The generator acts as a dynamic brake when the aircraft is grounded to prevent windmilling. A switch selects between the primary and secondary oil pump and controls the brake application.

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Application of Dynamic Braking to Mine Hoisting Systems, Thomas D. Barkand and William J. Helfrich, U.S. Department of Labor, Mine Safety and Health Administration.

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