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Aircraft with turnable wings

A technology of aircraft and wings, which is applied in the aerospace field, can solve the problems of short flight range and difficulty in exceeding the flight speed, and achieve the effects of low requirements, improved various performances, and high reliability

Active Publication Date: 2011-08-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the advent of fixed-wing aircraft, it has developed rapidly with the advantages of fast speed and long range. However, the take-off and landing of aircraft must rely on runways or catapults, and because they cannot spin and stop, it is difficult to conduct continuous and uninterrupted reconnaissance of targets.
The helicopter-type hovering aircraft has no such shortcomings, but the disadvantage is that due to the limitation of the rotor, it is difficult to fly at a speed of more than 300km / h and the range is relatively short.

Method used

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Examples

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Effect test

Embodiment 1

[0013] Example 1: Combining Figure 1 ~ Figure 2 , a kind of twistable wing aircraft of the present invention, it is made of fuselage (1), subsection curved twistable wing (2), electroactive polymer skin (3), sheet-like macrofiber piezoelectric composite material bar (4), deformed honeycomb core (5), reversing platform (6) and variable pitch propeller engine (7), the fuselage (1) and segmented curved twistable wing (2) form the flight Wing layout aircraft, two variable-pitch propeller engines (7) are symmetrically installed on the trailing edge of the wing, the electroactive polymer skin (3) is used as the wing skin, and the sheet-like macro-fiber piezoelectric composite strip (4 ) on the neutral layer of the wing, the deformed honeycomb filler (5) is filled between the wing skin and the sheet-like macro-fiber piezoelectric composite strip (4), and the inverting platform (6) is placed inside the fuselage to rotate At the center, it is connected to the body through a rotating ...

Embodiment 2

[0014] Example 2: Combining Figure 2 ~ Figure 4 , the present invention is an aircraft with twistable wings, and the sheet-like macro-fiber piezoelectric composite material strip is formed by alternating structures of piezoelectric fibers and interdigitated electrodes. A plurality of sheet-like macro-fiber piezoelectric composite material strips are attached to the neutral layer of the wing parallel to each other along the span direction. The above-mentioned sheet-like macro-fiber piezoelectric composite material strip is induced by a specific external electric field, the piezoelectric fiber generates mechanical stress, and the sheet-like macro-fiber piezoelectric composite material strip exhibits the ability of active bending. The bending deformation of a single sheet-like macro-fiber piezoelectric composite strip can drive the corresponding part of the wing to bend, realizing the segmental bending of the wing. The bending deformation of multiple sheet-like macro-fiber piezo...

Embodiment 3

[0015] Example 3: Binding Figure 2 ~ Figure 4 , the skin material of the present invention is an electroactive polymer, and a plurality of sheet-like macrofiber piezoelectric composite material strips are attached to the neutral layer of the wing parallel to each other along the span direction, and the deformed honeycomb core is filled in the skin between the neutral layer. The above-mentioned electroactive polymer, under the induction of an external electric field, produces bending, stretching or compressive deformation through the change of the internal structure of the material. So configured, the electroactive polymer skin exhibits the ability to actively torsionally deform. The sheet-like macro-fiber piezoelectric composite strips laid on the front and rear edges of the wing are bent in opposite directions to drive the wing to twist. The electroactive polymer skin and the sheet-like macro-fiber piezoelectric composite strip work together to make the wing generate a lar...

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PUM

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Abstract

The invention provides an intelligent material driven or mechanical driven aircraft with turnable wings, and the aircraft provided by the invention has the advantages of high speed, long voyage, low oil consumption, capability of VTOL (vertical take-of and landing), and capability of hovering. The aircraft comprises an aircraft body, sectional bending turnable wings, electroactive polymer skins, sheet macro-fiber piezoelectric composite material bars, deformed honeycomb fillers, a reversal platform and variable pitch propeller engines, wherein the two variable pitch propeller engines are symmetrically mounted on the rear edges of the wings, the electroactive polymer skins are taken as wing skins, the sheet macro-fiber piezoelectric composite material bars are arranged on the neutral layers of the wings, the spaces between the wing skins and the sheet macro-fiber piezoelectric composite material bars are filled with the deformed honeycomb fillers, and the reversal platform is placed ata rotary center inside the aircraft body. According to the invention, an intelligent driver is utilized as the driving source for wing turning, and the aircraft has the advantages of light weight, simple mechanism, high efficiency and convenience for maintenance, and can be switched rapidly in flying modes of level flaying and hovering through wing turning.

Description

(1) Technical field [0001] The invention relates to aerospace technology, in particular to an aircraft with twistable wings. (2) Background technology [0002] Since the advent of fixed-wing aircraft, it has developed rapidly with the advantages of fast speed and long range. However, the take-off and landing of aircraft must rely on runways or catapults, and because they cannot spin and stop, it is difficult to conduct continuous and uninterrupted reconnaissance of targets. The helicopter-type hovering aircraft does not have this defect, but the disadvantage is that due to the limitation of the rotor, the flight speed is difficult to exceed 300km / h, and the flight range is also relatively short. In recent years, some countries have set off an upsurge, competing to develop a vertical take-off and landing aircraft that combines the performance advantages of fixed-wing aircraft and helicopters. The precise definition of a vertical take-off and landing vehicle (VTOL) is: the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C3/52B64C1/12
Inventor 刘彦菊孙健陈以金刘力搏冷劲松
Owner HARBIN INST OF TECH
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