Foldable wing extensible in wingspan

Abstract

The invention discloses a foldable wing extensible in wingspan .The foldable wing comprises a front wing, a rear wing, a base and an actuating system, wherein the front wing comprises a left front inner wing and a right front inner wing which are arranged symmetrically, the rear ring comprises a left rear wing and a right rear wing which are arranged symmetrically, the end of the left front inner wing and the end of the right front inner wing are hinged and installed to one end of the base though front wing installing shafts, the actuating system is arranged at the other end of the base, a left front outer wing and a right front outer wing which slide in the length directions of the inner wings are respectively arranged on the left front inner wing and the right front inner wing, one end of the left rear wing and one end of the right rear wing are hinged and installed to a sliding block, the other end of the left rear wing and the other end of the right rear wing are in hinged connection with the left front outer wing and the right front outer wing, and the sliding block is driven by the actuating system to longitudinally move along the base back and forward .The foldable wing is large in wingspan variation amplitude and small in occupied space, leans against the base when being folded, the left front outer wing and the right front outer wing are rotatably unfolded around the front wing installing shaft, meanwhile the left front outer wing and the right front outer wing increase the wingspan width, a lift force and the lift-drag ratio are increased, and the flight efficiency is improved .

Description

technical field [0001] The invention relates to the technical field of folding wings, in particular to a folding wing with a stretchable wingspan. Background technique [0002] Compared with rotary-wing aircraft, fixed-wing aircraft has the characteristics of higher flight efficiency, so general aircraft (such as fighter jets, civil aviation airliners, cruise missiles and cruise bombs) mostly use fixed-wing aircraft as the main lift-providing device. The wingspan of a fixed-wing aircraft is a key parameter affecting the lift of the aircraft. The larger the wingspan, the greater the lift generated by the aircraft under the same circumstances, and the greater the lift-to-drag ratio (the ratio of lift to drag). Also taller, so airliners and transport aircraft tend to have a pair of very large wings. Although the flight efficiency of the fixed wing is high, the general fixed wing also has its inherent disadvantages. For example, the larger the wingspan, the larger the parking a...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology and provide a folding wing with a stretchable wingspan, which solves the problem that the wingspan of the traditional folding wing in the current technology is limited and it is difficult to achieve a large The problem that the wingspan cannot effectively reduce the occupied space

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