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 directions of wings, wing adjustment, aircraft parts, etc., can solve problems such as the inability to meet the flight strength and stiffness of aircraft, damage and air leakage of wings, and achieves high deployment reliability and materials. Light weight and improved flight effect

Active Publication Date: 2010-06-16
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 mode one: as figure 1 with 2 As shown, the inflatable expandable wing based on shape memory polymer 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 skeleton 1, and the flexible skin 3 is clad 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 connected by a plurality of independent unit inflatable airbags (that is, the closed inflatable airbag 2 inside the wing frame 1 is connected to each other by several airbags, and after inflation, it provides internal pressure for the deployed wing). The spaces between the ribs form the cavities inside the wing for the placement of the unit inflatable airbags. In addition, skins are placed and fixed on the upper and lower surfaces of the wings, and flexible skins are placed on the outside of the wings to impro...

specific Embodiment approach 2

[0031] Specific implementation mode two: as figure 1 with 2 As shown, the wing skeleton 1 in this embodiment is composed of a plurality of ribs 1-1 and a plurality of spars 1-2, and the plurality of ribs 1-1 is a group of wings whose geometric shapes gradually become larger The ribs 1-1 are any shape in the NACA airfoil series, and multiple spars 1-2 and multiple ribs 1-1 are criss-crossed and fixed together to form a cylindrical net shape. skeleton. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0032] Specific implementation mode three: as figure 1 with 2 As shown, the number of the plurality of ribs 1-1 in this embodiment is eight, and the number of the plurality of spars 1-2 is four. Other components and connections are the same as those 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 expandable wing and a manufacturing method thereof. Background technique [0002] The United States first began to study inflatable aircraft in the 1950s. At present, there have been aircraft with new structures such as inflatable glider, inflatable unmanned reconnaissance aircraft, and trailing edge inflatable booster. Inflatable aircraft can be used as individual reconnaissance systems, such as grenade-launched unmanned reconnaissance drones. It can also be used for reconnaissance aircraft dropped in large quantities by military transport aircraft. Inflatable aircraft is a new type of aircraft with great characteristics and wide uses. It is of certain significance to carry out related research and exploration on inflatable aircraft. Compared with traditional aircraft, inflatable aircraft has the following four advantages: small size, light weight; convenient launch; good stealth performance; good bulletproof ...

Claims

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Application Information

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