A helicopter main rotor transmission with imputs from two 1150-kW engines can be arranged to have the exceptionally low height of 32 cm. This low height, and consequent 10 percent reduction in weight, is made possible by the novel feature of enclosing the final-stage plenetary gear within the support walls and bearings of a large diameter spur gear. The three drive stages provide an overall speed-reduction ratio of 81:1 at a main gearbox efficiency of 97.5 percent. Additionally, the number of critical bearings in the main gearbox is reduced by 24 percent in comparison with production transmissions of similar rating. (Peters)


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    Title :

    A low height 2300 kW helicopter transmission with an enclosed planetary gear


    Additional title:

    Ein 2300 kW Hubschraubergetriebe mit integriertem Planetengetriebe


    Contributors:
    White, G. (author)

    Published in:

    Publication date :

    1980


    Size :

    6 Seiten, 4 Bilder, 3 Tabellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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