Ram air turbine governor spring positioning
AssigneeHamilton Sundstrand Corporation
InventorAndrew N. Baines
Life of this patent
Estimating the term…
Abstract
A ram air turbine has turbine blades connected to rotate a transmission shaft. The transmission shaft is connected to drive a first gear which is engaged to drive a second gear. The second gear is connected to rotate an output shaft extending through a strut away from the transmission shaft. A governor arrangement is configured to change a pitch angle of the blades in response to speed, and includes counterweights acting on a spring in the governor arrangement. The governor spring is positioned on an opposed side of the strut relative to the turbine.
Claims18
A ram air turbine comprising:
- turbine blades connected to rotate a transmission shaft about an axis of rotation, said transmission shaft connected for driving a first gear which is engaged to drive a second gear, said second gear connected to rotate an output shaft extending through a strut away from said transmission shaft;
- a governor arrangement to change a pitch angle of said turbine blades in response to speed, and including counterweights acting on a governor spring in said governor arrangement, said governor spring positioned on an opposed axial side of said strut taken along said axis, relative to said turbine blades;
- and
- wherein a governor rod is caused to move axially against the force of said governor spring when said counterweights move in a direction to close said pitch angle.
A ram air turbine comprising:
- turbine blades connected to rotate a transmission shaft about an axis of rotation, said transmission shaft connected for driving a first gear which is engaged to drive a second gear, said second gear connected to rotate an output shaft extending through a strut away from said transmission shaft;
- a governor arrangement to change a pitch angle of said turbine blades in response to speed, and including counterweights acting on a governor spring in said governor arrangement, said governor spring positioned on an opposed axial side of said strut taken along said axis, relative to said turbine blades;
- and
- wherein said governor spring does not rotate with said transmission shaft.
A ram air turbine comprising:
- turbine blades connected to rotate a transmission shaft, said transmission shaft connected for driving a first gear which is engaged to drive a second gear, said second gear connected to rotate an output shaft extending through a strut away from said transmission shaft;
- a governor arrangement to change a pitch angle of said turbine blades in response to speed, and including counterweights acting on a governor spring in said governor arrangement, said governor spring positioned on an opposed side of said strut relative to said turbine blades;
- wherein said governor spring reacting off a plate at an opposed end of a governor rod relative to said turbine blades;
- wherein said governor spring does not rotate with said transmission shaft;
- and
- wherein said governor rod rotates with said plate and said governor spring applying a force against said plate, and bearings supporting said governor spring on said plate.
Dependencies are inferred from the claim text.