Tilt-rotor plane operated and propelled by thrust scull and slipstream rudder

Abstract

A tilt rotor aircraft adopting a thrust tail rotor and a slipstream rudder for operation and propelling and a design of two parallel rotary wings and common pneumatic distribution comprises an airframe, wings, an empennage, a system of thrust tail rotor and slipstream rudder, an undercarriage, a power-fuel system, a transmission system, a rotary wing system, a rotary-wing nacelle and a tilt rotor system of the rotary-wing nacelle. The aircraft adopts the system of the thrust tail rotor and slipstream rudder to operate the VTOL and the pitching and drifting of the forward flight; the system comprising the thrust tail rotor, an elevator and a rudder is arranged on the empennage; a tilting wingtip appears as a small-area wing which is arranged on the outside of the rotary-wing nacelle and rotates together with the rotary-wing nacelle; the plane shape of the tilting wingtip appears as a trapezoid of leading edge sweepback and trailing edge sweepforward and the aspect ratio is 1.5 and the area of the tilting wingtip occupies about 15 to 20 percent of the whole wing area and the tilting wingtip is just integrated with the appearance of the rotary-wing nacelle and fixedly connected with a nacelle bevel gear box. The tilt rotor aircraft is a novel aircraft type with the development potential and prosperous prospect.

Description

(1) Technical field: [0001] The invention relates to a tilting rotor aircraft, in particular to a tilting rotor aircraft which adopts a thrust tail rotor and a slipstream rudder for manipulation and propulsion. The invention belongs to the technical field of vertical take-off and landing aircraft and aviation vehicle design. (two) background technology: [0002] In order to design an aircraft that has both the vertical take-off and landing performance of a helicopter and the high-speed, long-range performance of a fixed-wing aircraft, humans have proposed various vertical take-off and landing aircraft, including compound helicopters, equipped with thrust vectoring engines or Lift powered jet aircraft, rotary wing aircraft, tilt ducted propeller aircraft, tilt rotor aircraft, etc. For specific information, please refer to the paper published by American scholar Rob Ransone: An Overview of VSTOLAircraft and Their Contributions (An Overview of VSTOLAircraft and Their Contribut...

AI Technical Summary

Problems solved by technology

Since the rotor blades of this tiltrotor can only function as super-large-diameter propellers, the propulsion efficiency is not very high during forward flight, which also limits the aircraft to reach a greater forward speed.

In addition, due to the heavy rotor power nacelle hanging on the wing tip, the strength and stiffness of the wing limit the wingspan of this type of aircraft, so the forward flight lift and drag characteristics of this tilt rotor aircraft are not very good, and the aeroelasticity is also very poor. Difficult to meet design requirements

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