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Coaxial-rotor helicopter gearbox This gearbox comprises housing to accommodate spinning hollow vertical and coaxial shafts. Rotor is fitted on one end of every said shaft. Sump is arranged in housing case and coupled via bearings and tapered gearing with second ends of hollow shafts of upper and lower rotors. Note here that vaned pump wheel is fitted on upper rotor shaft its vanes being arranged at angle α relative to its radius and provided with orifices arranged regularly on its lower end surface, axes of said orifices being parallel with pump wheel axis. Vanes on sump inner surface are arranged at angle α relative to its radius directed opposite inclination of the vanes of said pump wheel. Chamber case is filled with lubricant and communicated via channel, clearances and orifices with bearings and gearings. |
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Cryogenic turbo-electric stol aircraft Cryogenic turbo-electric STOL aircraft has longitudinal design of triplane with a foreplane, twin-finned H-shape tail unit. The aircraft includes fuselage, wings, wheel landing gear, power plant and variable propulsion system with three different-sized feathering reversible propellers. The foreplane has elevons and panels of all-moving tailplane designed with a capability of differential and inphase turn with reference to the interkeel pitch axis together with propellers from the level attitude downwards and upwards. The power plant, designed using the parallel-serial hybrid technology of the power actuator, is equipped with the left and right electric motors mounted in engine nacelles, gas-turbine engine equipped with forward output shaft for the power take-off to the reduction gearbox of bigger propeller and output shaft for a power take-off, rotationally connected through output and input couplings respectively with the bigger propeller and reversible motor-alternator. |
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Coaxial twin-rotor engine biplanetary drive Invention relates to machine building and may7 be used in vehicles driven and air screw. Biplanetary drive with ring gear made up of paired epicycle 3 is fitted in bearing 2 inside housing 1. Receiving section of epicycle 3 comprises epitrochoid working shape 4 outlined by vertices of triangular rotor 5. Crank 6 arranged off-center relative to sun ledge 7 with its axis aligned with ring gear center is arranged in rotor and aligned therewith. Radii of said sun ledge and crank relate as 2:3. Eccentricity equals half the radius of said ledge 7. Second part of ring gear represents inner gearing rim and comprises set of plane pinions coupled by central gear with sun ledge 7 and combined by drive carrier. Axial extensions of sun ledge 7 and ring gear comprise internal and external air screws, respectively. |
Another patent 2547077.