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Uniform-section pipe parallel jet type canopy heating and loading test bed

A technology of loading test and equal cross-section, which is applied in the direction of aircraft component testing, mechanical component testing, machine/structural component testing, etc. It can solve the problems of inconvenient engineering implementation and achieve the effect of simple processing

Pending Publication Date: 2020-09-15
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the current method adopts variable section for the main pipe and variable diameter for the branch pipe holes, which is very inconvenient for project implementation.

Method used

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  • Uniform-section pipe parallel jet type canopy heating and loading test bed
  • Uniform-section pipe parallel jet type canopy heating and loading test bed
  • Uniform-section pipe parallel jet type canopy heating and loading test bed

Examples

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Embodiment Construction

[0032] The illustrations are shown below. The present invention as Figure 1-3 As shown, it includes a gas source 1, a heating channel, a cooling channel, a main pipe of equal section 6 and two branch pipe arrays 7 of equal section. A hot circuit control valve 2 and a heating unit 3 are provided in the channel, and a cold circuit control valve 4 and a refrigeration unit 5 are provided in the cooling channel;

[0033] The two equal-section branch pipe arrays 7 are respectively arranged on both sides of the equal-section main pipe 6. The equal-section branch pipe array 7 includes a number of equal-section branch pipes 8 communicated with the equal-section main pipe 6, and each equal-section branch pipe 8 is provided with several Equal diameter air distribution holes 9;

[0034] All the equal-diameter air distribution holes 9 are set towards the canopy of the aircraft in the heating and loading test bench, so that the jet array blows to the outer surface of the canopy. In actu...

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Abstract

The invention discloses a uniform-section pipe parallel jet type canopy heating and loading test bed and belongs to the technical field of aircraft canopy ground tests. According to the uniform-section pipe parallel jet type canopy heating and loading test bed of the invention, the impact of a cooling process on a canopy in a flight envelope is tested. According to the technical schemes, the uniform-section pipe parallel jet type canopy heating and loading test bed comprises a uniform-section main pipe and a uniform-section branch pipe array; the uniform-section branch pipe array comprises a plurality of uniform-section branch pipes communicated with the uniform-section main pipe; a plurality of uniform-diameter air distribution holes are formed in each uniform-section branch pipe; the plurality of uniform-cross-section branch pipes in the uniform-cross-section branch pipe array are arranged through a flow equalization structure, so that the uniform-cross-section main pipe performs uniform flow distribution on each uniform-cross-section branch pipe; and the hole spacing of the equal-diameter air distribution holes is determined according to a uniform flow distribution criterion, sothat the uniform-section branch pipes perform uniform flow distribution on the equal-diameter air distribution holes. The test bed has the advantages of safety, reliability, uniform temperature distribution and the like on the whole.

Description

technical field [0001] The invention provides a parallel-jet canopy heating and loading test bench for equal-section tubes, which belongs to the technical field of aircraft canopy ground tests. Background technique [0002] The aircraft canopy heating and loading test equipment is mainly used for the verification of the durability life test of the aircraft canopy. Using this equipment, the heating and loading test is carried out according to the load spectrum formulated by the corresponding flight envelope, which is a necessary method to determine the durability and reliability of the aircraft canopy. [0003] In the heating and loading test of the aircraft canopy, although the test piece is a canopy of prototype size, the aerodynamic boundary layer on the outer surface of the test piece cannot be realized in the test, because it is difficult to generate a large amount of air flow at a speed comparable to the flight speed of the aircraft. Therefore, the simulation of the ae...

Claims

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Application Information

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IPC IPC(8): B64F5/60G01M13/00
CPCB64F5/60G01M13/00
Inventor 张立圣马春香方贤德陈闯毕明华张锦贤陈伟刘序理
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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