Shape memory polymer-based air filling extensible wing and methods for manufacturing same

A technology of memory polymer and production method, which is applied in the direction of wings, wing adjustments, aircraft parts, etc., can solve the problems of unsatisfactory flight strength and stiffness, wing damage and air leakage, etc., and achieve high deployment reliability and material Effect of light weight, improved stability and reliability

Active Publication Date: 2012-06-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing inflatable expandable wings cannot meet the strength and rigidity required for aircraft flight, and when the stamping pressure is too large, the wings are prone to damage and air leakage, and further provide an inflatable expandable wing based on shape memory polymers. Deployed wing and method of making the same

Method used

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  • Shape memory polymer-based air filling extensible wing and methods for manufacturing same
  • Shape memory polymer-based air filling extensible wing and methods for manufacturing same
  • Shape memory polymer-based air filling extensible wing and methods for manufacturing same

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specific Embodiment approach 1

[0028] Specific implementation manner one: such as figure 1 with 2 As shown, the shape-memory polymer-based inflatable and deployable wing described in this embodiment is composed of a wing frame 1, a closed inflatable airbag 2 and a flexible skin 3. The closed inflatable airbag 2 is arranged in the frame 1, and the flexible skin 3 is coated on the outer surface of the skeleton 1, and the wing skeleton 1 is made of shape memory polymer.

[0029] The inflatable airbag 2 can be formed by connecting multiple independent unit inflatable airbags (that is, the closed inflatable airbag 2 inside the wing skeleton 1 is connected by a number of airbags, which provide internal pressure for the deployed wing after inflation), and the adjacent two wings The space between the ribs forms a cavity inside the wing for placing the unit inflatable airbag. In addition, skins are placed on the upper and lower surfaces of the wing and fixed, and flexible skins are placed on the outside of the wing to ...

specific Embodiment approach 2

[0031] Specific implementation manner two: such as figure 1 with 2 As shown, the wing skeleton 1 of this embodiment is composed of a plurality of wing ribs 1-1 and a plurality of wing spars 1-2. The multiple wing ribs 1-1 are a set of wings whose geometric shapes gradually become larger. The rib 1-1 is any shape in the NACA wing series. Multiple spars 1-2 and multiple wing ribs 1-1 are interlaced and fixed together to form a cylindrical net shape. skeleton. The other components and connection relationships are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Specific implementation manner three: such as figure 1 with 2 As shown, in this embodiment, the number of the plurality of wing ribs 1-1 is eight, and the number of the plurality of wing spars 1-2 is four. Other components and connection relationships are the same as in the second embodiment.

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Abstract

The invention provides a shape memory polymer-based air filling extensible wing and methods for manufacturing the same, relates to an extensible wing and a method for manufacturing the same, and aims to solve the problem that the strength and the rigidity, needed for the flight of a plane, of the wing are not met, and the problem that the wing is easily damaged for air leak when the punching pressure is too big in the conventional air filling extensible wing. A skeleton of the wing is made of shape memory polymers. The method I comprises a step of manufacturing the skeleton of the wing comprise: designing a mould, manufacturing an uncured fiber reinforcement shape memory polymer blank, heating the blank at a temperature of between 70 and 80 DEG C for 16 to 24 hours, demoulding the fiber reinforcement shape memory polymer blank, which is heated to be cured, to obtain a corresponding wing rib or wing beam, and then connecting and fixing the wing rib and the wing beam to form the skeleton of the wing. The method II comprises: keeping warm for 60 minutes at a temperature of 75 DEG C, heating the skeleton of the wing to the temperature of 100 DEG C, keeping the temperature for 30 minutes, cooling skeleton of the wing to the temperature of 75 DEG C, and keeping the temperature for 24 hours. The air filling extensible wing of the invention meets the strength and the rigidity, needed for the flight of a plane, of the wing the sealing property of the wing is good, and the method for manufacturing the wing has an advantage of simple process operation.

Description

Technical field [0001] The invention relates to an inflatable deployable wing and a manufacturing method thereof. Background technique [0002] The United States first began to study inflatable aircraft in the 1950s. At present, aircraft with new structures such as inflatable gliders, inflatable unmanned reconnaissance aircraft, and rear-edge inflatable lifts have emerged. Inflatable aircraft can be used as individual reconnaissance systems, such as grenade-launched unmanned reconnaissance aircraft. It can also be used as a reconnaissance aircraft for military transport aircraft. The inflatable aircraft is a new type of aircraft with great characteristics and a wide range of uses. The research and exploration of inflatable aircraft is of certain significance. Compared with traditional airplanes, inflatable airplanes have the following four advantages: small size and light weight; convenient launching; good stealth performance; and good anti-ballistic performance. In recent ye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D99/00B64C3/30B64C3/56B29L31/30
Inventor 冷劲松于凯刘彦菊
Owner HARBIN INST OF TECH
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