Patent ID: 11873771
Assignee: GE AVIATION CZECH S.R.O.
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 7:
8. The propeller controller of claim 6, further including a pitch actuation assembly including:
a control piston translatable within the propeller dome;
a piston rod connected to the control piston and extending into a propeller gear box of an engine, the piston rod translatable in unison with the control piston;
an oil transfer bearing surrounding the piston rod within the propeller gear box of the engine and defining a flight gallery fluidly connected with the secondary control valve and a ground gallery fluidly connected with the secondary control valve; and
a beta tube enclosed within the piston rod and fluidly connecting the flight gallery with a chamber of the propeller dome.