Dual-rotor coaxial helicopter with wing-shaped rotors

Abstract

The invention relates to a dual-rotor coaxial helicopter with wing-shaped rotors, and the helicopter belongs to B64C 27 / 04. helicopters according to international patent technology classification. The general layout adopts a mashup design of a dual-rotor coaxial helicopter and a fixed wing aircraft with preposed canard wings. An elevator is preposed, and horizontal wings and ailerons for lateral control are disposed at the rear. A control surface that is responsible for yaw control is positioned behind ducted propellers that are disposed at the rear and used for providing thrust. Fans are arranged below the fuselage on the left and the right so as to retreat or horizontally and slightly adjust the fuselage hovering position or make the fuselage revolve. Due to the wing shape change, when an engine encounters in-flight shut-down, the helicopter continuously suffers height loss, so that air and the rotors interact to convert the potential energy of the helicopter into kinetic energy, which makes the rotors continue to rotate according to the rotation direction of the engine during working hours. Consequently, a lifting force can be generated, and fall can be changed to a safe landing. The helicopter provided in the invention can solve or improve the problems of small speed, short flying range, low flight height, great vibration and noise, poor reliability, high cost and use fee in helicopters in active service.

Description

Technical field [0001] The invention relates to a twin-rotor coaxial helicopter with a wing shape, which is classified as B64C 27 / 04·helicopter according to the international patent technology. Background technique [0002] In 1946, the Bell-47 of Bell Company of the United States obtained the first helicopter airworthiness certificate issued by the United States. Since then, the development of helicopters has entered a practical stage. So far, more than 200 helicopter models have been produced in the world, with an output of more than 50,000. Helicopter has become an important part of aircraft. Helicopter technology has been a relatively mature technology for more than 60 years and is well known by the helicopter technology community and amateurs. However, there are still many problems that cannot be solved satisfactorily for a long time, especially in recent years, the requirements for energy saving, noise reduction, reliability improvement and usage fee reduction have b...

AI Technical Summary

Problems solved by technology

It will solve or improve the problems of low speed, short voyage, low flight altitude, high vibration and noise, and poor reliability of existing helicopters

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