Variant tiltrotor aircraft and working method thereof

Abstract

The invention discloses a variant tiltrotor aircraft and a working method thereof. When the tiltrotor aircraft is in a helicopter mode, a propeller blade for providing a lifting force can automatically become longer in diameter, and meanwhile, the span of a wing becomes short, so that the flexibility of the propeller blade is improved to generate a larger lift force, the span of the wing is reduced, and the aerodynamic interference of a rotor wing to the wing is reduced; and when the tiltrotor aircraft is in a fixed-wing mode, a propeller for providing forward thrust can automatically become smaller in diameter, and meanwhile, the span of the wing becomes longer, so that the rigidity of the propeller is increased to produce larger thrust, and the span of the wing is increased to produce alarger lift force. According to the variant tiltrotor aircraft and the working method, the propeller and the wing can be optimized and matched in different flight modes according to the tiltrotor aircraft, the flight performance is remarkably improved, meanwhile, an advanced shape memory alloy material is adopted, no complex mechanical structure is required for variant, and the power of an engineis maximally utilized.

Description

technical field [0001] The invention belongs to the technical field of aviation aircraft, and in particular relates to a variant tilt rotor aircraft and a working method thereof. . Background technique [0002] As one of the greatest inventions, the helicopter has played an irreplaceable role in the economic construction of countries around the world, people's daily life and modern warfare by virtue of its outstanding hovering, low-altitude and low-speed and good maneuverability. As a typical military-civilian dual-use product, helicopters can be widely used in logistics transportation, rescue and ambulance, sightseeing and tourism, emergency rescue and disaster relief, forest protection and fire fighting and other civilian applications. Military applications have been widely used in low-altitude reconnaissance, battlefield search and rescue, equipment transportation, logistics support, electronic Countermeasures, anti-submarine attack and so on. However, conventional sing...

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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a variant tiltrotor and its working method, so as to solve the problems of poor flight performance, poor maneuverability and low power utilization rate of the existing tiltrotor.

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