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US 10,882,610 B2Granted
Electrical braking systems for rotorcraft
AssigneeTextron Innovations Inc.
InventorJohn Robert Wittmaak
Life of this patent
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Abstract
A braking system for a rotorcraft having a rotor hub assembly includes a generator having an armature mechanically coupled to the rotor hub assembly such that the armature is rotatable in response to rotation of the rotor hub assembly and a braking unit in selective electrical communication with the generator. The braking unit is adapted to apply an electrical resistance to rotation of the armature, thereby reducing a rotational speed of the rotor hub assembly.
Claims20
A braking system for a rotorcraft having a rotor hub assembly driven by an engine, the system comprising:
- a generator having an armature mechanically coupled to the rotor hub assembly such that the armature is rotatable in response to rotation of the rotor hub assembly, the generator selectively drivable by the engine;
- and
- a braking unit in selective electrical communication with the generator, the braking unit adapted to apply an electrical resistance to rotation of the armature, thereby reducing a rotational speed of the rotor hub assembly.
A rotorcraft, comprising:
- a fuselage;
- an engine disposed in the fuselage;
- a rotor hub assembly protruding from the fuselage, the rotor hub assembly driven by the engine to rotate relative to the fuselage;
- a generator having an armature mechanically coupled to the rotor hub assembly such that the armature is rotatable in response to rotation of the rotor hub assembly, the generator selectively drivable by the engine;
- and
- a braking unit in selective electrical communication with the generator, the braking unit adapted to apply an electrical resistance to rotation of the armature, thereby reducing a rotational speed of the rotor hub assembly.
3 more elements
Dependencies are inferred from the claim text.