Pitch control assembly
AssigneeGE Aviation Systems LLC
InventorChristopher Roy Carrington
Life of this patent
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Abstract
A pitch control assembly for adjusting the pitch of a propeller blade, including a pitch control unit comprising a housing, with a plurality of control valves and corresponding hydraulic lines located within the housing, a blade angle unit, a transfer bearing mounted to the housing and having a plurality of hydraulic lines fluidly coupled to the hydraulic lines of the pitch control unit, a transfer tube axially receiving and axially moveable relative to at least a portion of the transfer bearing, a magnetic core sleeve carried by the transfer tube and located within the blade angle unit.
Claims20
A pitch control assembly coupled to a propeller assembly for adjusting the pitch of a propeller blade of the propeller assembly, the pitch control assembly comprising:
- a pitch control unit comprising a housing, with a plurality of control valves and corresponding hydraulic lines located within the housing;
- a blade angle unit comprising a series of coils located within the housing;
- a transfer bearing mounted to the housing and having at least a portion located within the series of coils and a plurality of hydraulic lines fluidly coupled to the hydraulic lines of the pitch control unit;
- a transfer tube axially receiving and axially moveable relative to at least a portion of the transfer bearing;
- and
- a magnetic core sleeve carried by the transfer tube and located within the blade angle unit;
- and
- wherein a pitch angle of the propeller blade may be controlled by axially moving the transfer tube relative to the transfer bearing in response to fluid supplied through the hydraulic lines in response to actuation of the control valves.
An aircraft having a variable pitch propeller including a hub and multiple propeller blades, the aircraft comprising:
- a pitch control assembly coupled to at least one of the variable pitch propeller for adjusting the pitch of, the pitch control assembly comprising:
- a pitch control unit comprising a housing, with a plurality of control valves and corresponding hydraulic lines located within the housing;
- a blade angle unit comprising a series of coils located within the housing;
- a transfer bearing mounted to the housing and having at least a portion located within the series of coils and a plurality of hydraulic lines fluidly coupled to the hydraulic lines of the pitch control unit;
- a transfer tube axially receiving and axially moveable relative to at least a portion of the transfer bearing;
- and
- a magnetic core sleeve carried by the transfer tube and having at least a portion located within the blade angle unit.
Dependencies are inferred from the claim text.