To increase a time in which an air vehicle can fly more than before even during an emergency when a lubrication oil is not supplied from a lubrication system to a transmission during flight of a helicopter.SOLUTION: A transmission cooling structure of a helicopter includes: a transmission having a transmission mechanism which changes a speed of rotational power input form a prime mover to output the rotational power; and a housing which houses the transmission mechanism; a cowl which covers at least a part of an outer surface of the housing and forms a gap with the outer surface; and a circulation mechanism which causes outer air to circulate in the gap.SELECTED DRAWING: Figure 2

    【課題】ヘリコプターの飛行中に潤滑油が潤滑系統よりトランスミッションに供給されない非常時においても、飛行可能時間を従来よりも向上させる。【解決手段】ヘリコプターのトランスミッション冷却構造は、原動機から入力される回転動力を変速して出力する変速機構と、変速機構を収容するハウジングと、を有するトランスミッションと、ハウジングの外表面の少なくとも一部を覆い、前記外表面との間に間隙を形成するカウルと、前記間隙に外気を流通させる流通機構と、を備える。【選択図】図2


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    Title :

    TRANSMISSION COOLING STRUCTURE OF HELICOPTER


    Additional title:

    ヘリコプターのトランスミッション冷却構造


    Contributors:

    Publication date :

    2021-07-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B64C AEROPLANES , Flugzeuge



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