Patent ID: 8113317

Claim:
An aircraft lubrication supply system, comprising: an electric motor operable, upon being energized from a power source, to rotate and supply a drive force; a pump coupled to receive the drive force from the electric motor and operable, upon receipt thereof, to supply lubricant to a rotating machine; a rotational speed sensor operable to sense rotational speed of the rotating machine and to supply a rotational speed signal representative thereof; and a controller adapted to receive one or more signals indicating that the rotating machine is operating in a windmill operational condition and coupled to receive the rotational speed signal from the rotational speed sensor, the controller operable, in response to the one or more signals and to the rotational speed signal, to: (i) determine that the rotating machine is operating in the windmill condition, (ii) determine when the rotational speed exceeds a predetermined value, and (iii) at least selectively energize the electric motor from the power source when (a) the rotating machine is operating in the windmill operational condition and (b) the rotational speed exceeds the predetermined value.