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US 2026/0296668 A1Published application
Aircraft ram air turbine systems having face gears
AssigneeThe Boeing Company
InventorsHon-Wai William Chun, Caleb Richard Shill, Gary Alan Craig
Life of this patent
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Abstract
Example ram air turbine (RAT) systems for aircraft are disclosed herein. An example RAT system includes a fan, a fan output shaft driven by the fan, a first face gear, the first face gear operatively coupled to the fan output shaft, a second face gear, and a first pinion gear enmeshed with the first face gear and the second face gear.
Claims20
A ram air turbine (RAT) system comprising:
- a fan;
- a fan output shaft coupled to the fan;
- a first face gear, the first face gear operatively coupled to the fan output shaft;
- a second face gear;
- and
- a first pinion gear enmeshed with the first face gear and the second face gear.
3 more elements
A RAT transmission comprising:
- a transmission casing having a cavity containing:
- a first face gear;
- a second face gear;
- and
- a pinion gear to couple the first face gear and the second face gear, the first face gear to receive an input from a RAT fan, the pinion gear to output a rotational movement provided by the RAT fan to a generator shaft of a generator via the first face gear and the second face gear.
2 more elements
An aircraft comprising:
- a fuselage;
- a RAT recovery system coupled to the fuselage, the RAT recovery system movable between a stored position and a deployed position relative to the fuselage, the RAT recovery system including:
- a fan;
- a first face gear coupled to the fan, the first face gear having a first set of teeth;
- a second face gear having a second set of teeth oriented toward the first set of teeth of the first face gear;
- a first pinion gear enmeshed with the first set of teeth of the first face gear and the second set of teeth of the second face gear;
- and
- a generator having a generator input shaft operatively coupled to the first pinion gear.
5 more elements
Dependencies are inferred from the claim text.