Jisho

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かいてんよくき 回転翼機
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Noun
1. rotorcraft; rotary-wing aircraft​See also 固定翼機 こていよくき
Wikipedia definition
2. Rotorcraft​A rotorcraft or rotary wing aircraft is a heavier-than-air flying machine that uses lift generated by wings, called rotor blades, that revolve around a mast. Several rotor blades mounted to a single mast are referred to as a rotor. The International Civil Aviation Organization (ICAO) defines a rotorcraft as "supported in flight by the reactions of the air on one or more rotors".
Read “Rotorcraft” on English Wikipedia
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Read “Rotorcraft” on DBpedia

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