To provide a hover-capable aircraft designed in such a way that operation noise is notably reduced.SOLUTION: A hover-capable aircraft includes: propulsion means; transmission means lubricated with a lubricant; a heat exchanger receiving the heated lubricant from the transmission means and returning the lubricant after cooling to the transmission means; a fan (10) generating an air flow in the heat exchanger to cool the lubricant; an impeller (16) provided with blades 21; and a discharge pipe (18) discharging high-temperature air generated by cooling the lubricant. The hover-capable aircraft has dissipation means (25) designed in such a way that at least a part (23) of a wall part (22) of the discharge pipe (18) selectively absorbs pressure waves in a specified frequency band related to rotation speed (V) of the impeller (16) and to the number (N) of blades (21) of the impeller (16).SELECTED DRAWING: Figure 4

    【課題】運転騒音を著しく低減させるように設計されたホバリング航空機を提供する。【解決手段】推進手段と、潤滑剤で潤滑される伝達手段と、加熱された潤滑剤を伝達手段から受け取って冷却後の潤滑剤を伝達手段へ戻す熱交換器と、熱交換器に気流を発生させて潤滑剤を冷却するためのファン(10)とを有して、ブレード(21)を備えるインペラ(16)と、潤滑剤を冷却することにより発生される高温空気を排出する排気管(18)とを有するホバリング航空機であって、排気管(18)の壁部(22)の少なくとも一部(23)が、インペラ(16)の回転速度(V)とインペラ(16)のブレード(21)の数(N)とに関連する所定の周波数帯域の圧力波を選択的に吸収するように設計された散逸手段(25)を有する、ホバリング航空機。【選択図】図4


    Access

    Download


    Export, share and cite



    Title :

    HOVER-CAPABLE AIRCRAFT


    Additional title:

    ホバリング航空機


    Contributors:

    Publication date :

    2019-01-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



    HOVER-CAPABLE AIRCRAFT

    BIANCHI ANDREA / SARTORI SERGIO | European Patent Office | 2021

    Free access

    HOVER-CAPABLE AIRCRAFT

    BENEDICT MOBLE / COLEMAN DAVID / HALDER ATANU et al. | European Patent Office | 2021

    Free access

    HOVER-CAPABLE AIRCRAFT

    PISANI PAOLO / MONTAGNA FEDERICO / REGONINI ROBERTO et al. | European Patent Office | 2023

    Free access

    HOVER-CAPABLE AIRCRAFT

    BIANCHI ANDREA / SARTORI SERGIO | European Patent Office | 2020

    Free access

    HOVER-CAPABLE AIRCRAFT

    BIANCHI ANDREA / SARTORI SERGIO | European Patent Office | 2020

    Free access