Abstract: The cooling of components (26) of a vehicle (10) carrying a turbine engine (12) and a fuel supply (24) for the engine (12) without the excessive consumption of bleed air is achieved in an apparatus which includes a fuel recirculating system (34), a first heat exchanger (60) for rejecting heat from selected components (26) of the vehicle (10) to fuel flowing through the fuel recirculating system (34), and a cooling device (32) including a second heat exchanger (100, 202) for rejecting heat from the fuel to the cooling device (32) as the fuel flows through the fuel recirculating system (34).

Abstract: Losses in efficiency of operation of a dynamoelectric machine as a result of eddy current losses and poor coolant efficiency and/or disruption of the magnetic circuit in a rotor by coolant passages is avoided in a dynamoelectric machine including a stator (18) in which a rotor (16) is journaled. The rotor includes a stack (16) of thin laminations (17) made of a ferromagnetic material to define a rotor body. The rotor body includes a plurality of equally angularly spaced poles (58) separated by recesses (64). Coolant passages (76) located in the rotor at or just radially inward of the base (72) of each pole (58) and substantially radially outward of the rotational axis (56) of the rotor (14) to maximize cooling efficiency of the poles (58) without disrupting the magnetic circuit in the rotor. Slots (80) are placed in the tips (70) of the poles (58) of selected laminations (17) and extend generally radially inward to reduce eddy current losses.