Patent ID: 7868477
Filing Date: 2011-01-11
Classification: B64C,B64D,F03D,F05B,Y02E

Abstract:
1. A device for supplying electricity to electrical components on a first element drivable for rotating operation with a predetermined rotation rate, said device comprising: a source of electricity comprising a stator and a rotor that are rotatable in relation to each other in a rotation direction, one of the rotor and stator being attached to said first element and another of the rotor and stator being attached to a second element comprising at least one braking member, having a predetermined drag coefficient for interaction with a surrounding fluid medium in rotating operation and thereby inducing a braking torque, which results in a difference in rotation rate in the rotation direction between the first element and said second element and wherein an output to said source of electricity is based on a product of said braking torque and said rotation rate difference.