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Rotor blade of a rotorcraft with reduced, acoustic properties
Rotor blade of a rotorcraft with reduced, acoustic properties
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机译:具有降低的声学特性的旋翼飞机的旋翼
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摘要
The aerodynamically profiled main part (21) of the blade comprises an external end part (31) which is adjacent to the blade tip (28) and extending along the span on a distance of at least 0, 2 r, where r is the radius of the rotor, the end part (31) being in the rear camber over a distance along the span of at least 0, 15, and the aerodynamically profiled main part (21) also comprises a front cambered part (32), immediately adjacent to the inside of the rear cambered end part (31). Application in particular to the equipment of the main rotors of helicopters.
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