COAXIAL TRANSMISSION SUBUNIT/CENTRAL HUB OF MAIN ROTOR UNIT OF UNMANNED FLYING VEHICLE Russian patent published in 1998 - IPC

FIELD: aeronautical engineering. SUBSTANCE: coaxial subunit includes load-bearing structure of central hub mounted between coaxial main rotors, upper and lower subunits of swash-plate rings of main rotors, single-stage transmission arranged inside multicomponent housing and power subsystem. According to invention, multicomponent housing includes upper and lower vertical housing located along axis of fuselage and connected with load-bearing structure of central hub in such way outer surfaces of upper and lower housings perform function of sliding surface for upper and lower swash-plate rings. Mounted in vertical housing of transmission are upper and lower bevel gear wheels; each gear wheel is made integral with shaft of respective main rotor. Load-bearing structure of central hub includes input gear wheel mounted for engagement with upper and lower gear wheels, respectively. EFFECT: enhanced reliability. 6 cl, 32 dwg