FIELD: aviation.
SUBSTANCE: invention relates to aircraft engineering, particularly, to rotorcraft rotor drives. Gearless drive of coaxial rotorcraft shafts comprises housing, which is in-series installed upper and lower support elements, made of material with high heat conductivity, connected to each other by means of flanges for attachment of support elements to the power frame of the apparatus. In walls of support elements there are longitudinal through channels, axes of which are parallel to common axis of rotation, and through holes located in circumferential direction opposite each other on the side of flanges, interconnected with longitudinal through channels. Magnetic conductors of stators with windings are arranged in series on external surfaces of support elements. Drive is equipped with covers arranged on opposite ends of rotors, each of which includes a hub, a rim and shaped blades located radially. Rims of covers are connected to ends of upper and lower rotors respectively.
EFFECT: reduction of longitudinal overall dimensions at simultaneous formation of directed air flow for drive cooling.
1 cl, 5 dwg
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