To provide a flight propeller and a manufacturing method therefor in which: the bonding portion of the periphery of the hull of the propeller is made small or minimized; especially the leading edge has no bonding portion; the propeller has sufficient strength as a propeller, with weight reduced with a hollow portion provided inside; and the manufacturing cost is reduced.SOLUTION: A flight propeller is constituted of a main girder, ribs, and a hull. An interior covered with the hull is constituted of one main girder and a plurality of ribs connected to the main girder, with the other parts being hollow. The hull is formed of one or more sheets of carbon fiber reinforced plastic laminated together. A leading edge of the propeller has no bonding portions with each of the upper and lower hulls. Meanwhile, a part or whole of a trailing edge of the propeller has bonding portions with each of the upper and lower hulls.SELECTED DRAWING: Figure 5
【課題】プロペラの外皮の周縁の接着部を小さく又は最小限にとどめ、特に前縁に接着部を有さず、プロペラとして十分な強度を有すると共に、内部に中空部を設けて軽量化され、且つ、製造コストを抑えた飛行用プロペラ及びその製造方法を提供する。【解決手段】飛行用プロペラは、主桁とリブと外皮からなる。外皮で覆われた内部は、1本の主桁とこれに接続された複数枚のリブで構成され、その他の部分は中空である。外皮は、1枚又は複数枚が積層された炭素繊維強化プラスチックからなる。プロペラ前縁には上面外皮と下面外皮との接着部位を有さない。一方、プロペラ後縁の一部又は全部には上面外皮と下面外皮との接着部位を有する。【選択図】図5
MANUFACTURING METHOD FOR FLIGHT PROPELLER
飛行用プロペラの製造方法
2025-04-07
Patent
Electronic Resource
Japanese