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Stiffening rib of flight vehicle aerofoil experimental model

A technology of test models and stiffeners, which is applied in aerodynamic tests, machine/structural component tests, instruments, etc., can solve the problems of low-speed flutter test models of aircraft wings, large weight ratio tests, and easy damage , achieve maximum economic value and practical use value, reduce looseness and shedding, and improve safety

Active Publication Date: 2010-11-24
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0008] Purpose of the present invention: in order to solve the problem that the low-speed flutter test model of the aircraft wing surface in the prior art is difficult to carry out the large weight ratio test and is easy to be damaged, the present invention provides a method that can be installed on the low-speed flutter test model of the aircraft wing surface. Large mass counterweight, and can ensure that the low-speed flutter test model of the aircraft wing is not easy to be damaged in the wind tunnel test, safe and reliable aircraft wing test model reinforcement ribs

Method used

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  • Stiffening rib of flight vehicle aerofoil experimental model
  • Stiffening rib of flight vehicle aerofoil experimental model
  • Stiffening rib of flight vehicle aerofoil experimental model

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Embodiment Construction

[0019] The present invention will be further described below by means of specific embodiments:

[0020] Please also see figure 1 , figure 2 and image 3 ,in, figure 1 It is a structural schematic diagram of a preferred embodiment of the reinforcing rib of the aircraft wing surface test model of the present invention, figure 2 Assembly drawing for installing large-mass counterweights, image 3 yes figure 2 side view. Wherein, the reinforcing rib 1 is made of a metal material with high rigidity and strength, such as steel, aluminum, iron or other metals with high rigidity. In this embodiment, it is made of aluminum. There is a through hole in the middle of the reinforcing rib 1 for the main beam 2 to pass through. The through hole is rectangular, and the size is consistent with the cross section of the main beam 2, so that in the wind tunnel test, the airfoil reinforcing rib 1 can be firmly fixed on the main beam. On the beam 2, it is not easy to loosen. Moreover, epo...

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Abstract

The invention relates to a stiffening rib of a flight vehicle aerofoil experimental model, wherein the original stiffening rib of the flight vehicle aerofoil experimental model, made of laminate plate material is replaced by the stiffening rib made of metal material. Steel material or aluminum material and the corresponding thickness can be selected according to the weight ratio of balance weightto total weight for the stiffening rib of the invention. The stiffening rib of a flight vehicle aerofoil low speed wind tunnel experimental model is provided with two through-holes, wherein a screw rod penetrates through the through-holes of the stiffening rib and a balance weight block, and nuts are used to lock and fix the massive balance weight block. The stiffening rib of the flight vehicle aerofoil experimental model can bear balance weight accounting for more than 50% of total weight, effectively reduce the unsafe factor when the massive balance weight block is fixed and avoid that the flight vehicle aerofoil experimental model is damaged in the wind tunnel experiment; and the stiffening rib has simple structure, high safety, reliable performance, true and accurate experimental result, low cost, high practicability and great use value.

Description

technical field [0001] The invention relates to a reinforcing rib of an aircraft wing surface wind tunnel test model, in particular to a reinforcing rib of an aircraft wing surface low-speed fluttering wind tunnel test model. Background technique [0002] An important task in the manufacture of aircraft wing flutter test models is inertia simulation. Inertia simulation includes simulating the mass of the airfoil, the position of the center of mass, and the mass moment of inertia around the rigid axis. This process is realized by using counterweights. [0003] In the design of the low-speed flutter wind tunnel test model of the aircraft wing, the material of the stiffener of the wing test model has always been made of aviation laminates. When the weight of the low-speed flutter model accounts for a small proportion of the total mass of the model, this design method It is very successful. Its advantages are convenient processing and simple installation of counterweight. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/04G01M9/08
Inventor 沈庆伟
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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