Brake mechanism for air turbine starter

Details Brake mechanism for air turbine starter Brake mechanism for air turbine starter

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 7/277 (2006.01) F01D 25/34 (2006.01) F02N 7/08 (2006.01) F16D 59/02 (2006.01)

Patent

CA 2730852

A brake assembly (44) for an air turbine starter (10) includes a brake cylinder (46) located in the air turbine starter (10). A brake piston (48) is located at least partially within the brake cylinder (46) and slidable therein. A biasing member (50) biases the brake piston (48) toward a turbine wheel (12) of the air turbine starter (10) applying a braking force to the turbine wheel (12) and defining a piston chamber (58) between the turbine wheel (12) and the brake piston (48). A through opening (56) in the brake piston (48) into the piston chamber (58) is configured such that a flow of fluid through the through opening (56) into the piston chamber (58) applies a force to the brake piston (48) sufficient to overcome the bias thereby allowing rotation of the turbine wheel (12).

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