Rotary apparatus
First Claim
1. A rotary apparatus incorporating at least one electrically powered device on a propeller, the apparatus comprising an electrical generator having inductive windings carried for rotation with the propeller, switching means on the propeller responsive to a control signal to supply the at least one electrically powered device, and fixed permanent magnets, in which the inductive windings co-operate with the fixed permanent magnets to generate an induced voltage when the propeller rotates relative to the fixed magnet, the control signal is supplied to the switching means via a contactless inductive communication link between the propeller and a structure on which the rotor is rotatably mounted, the inductive windings comprise part of the communication link and a control winding is provided on the magnets and in use the control winding is modulated with a control signal to transmit data over the communication link.
1 Assignment
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Accused Products
Abstract
A rotary apparatus in which at least one electrically controlled device is attached to a rotor. The rotor carries coils such that rotation of the rotor generates power for the device. A switch is provided for controlling the supply of power to the device and receives control signals via a contactless communication link.
32 Citations
12 Claims
- 1. A rotary apparatus incorporating at least one electrically powered device on a propeller, the apparatus comprising an electrical generator having inductive windings carried for rotation with the propeller, switching means on the propeller responsive to a control signal to supply the at least one electrically powered device, and fixed permanent magnets, in which the inductive windings co-operate with the fixed permanent magnets to generate an induced voltage when the propeller rotates relative to the fixed magnet, the control signal is supplied to the switching means via a contactless inductive communication link between the propeller and a structure on which the rotor is rotatably mounted, the inductive windings comprise part of the communication link and a control winding is provided on the magnets and in use the control winding is modulated with a control signal to transmit data over the communication link.
- 8. A rotary apparatus incorporating at least one electrically powered device on an aircraft rotor, the apparatus comprising an electrical generator having inductive windings carried for rotation with the rotor, switching means on the rotor responsive to a control signal to supply the at least one electrically powered device, and fixed permanent magnets, in which the inductive windings co-operate with the fixed permanent magnets to generate an induced voltage when the rotor rotates relative to the fixed magnets, the control signal is supplied to the switching means via a contactless inductive communication link between the rotor and a structure on which the rotor is rotatably mounted, the inductive windings comprise part of the communication link and a control winding is provided on the magnets and in use the control winding is modulated with a control signal to transmit data over the communication link.
Specification