Flutter model connecting device

A technology of flutter model and connecting device, which is applied in the direction of measuring device, instrument, aerodynamic test, etc., can solve the problem of not being applicable to the flexible rudder surface with large aspect ratio and higher connection strength, and achieve simple structure and connection form , reduce the use of space, and avoid the effect of destroying the shape

Active Publication Date: 2019-03-01
COMAC +1
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Problems solved by technology

However, although this solution occupies less space, is convenient to obtain materials, and has a relatively small structural size, it is not suitable for the higher connection strength requirements of flexible rudder surfaces with large aspect ratios.

Method used

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Embodiment Construction

[0024] It should be noted that the drawings referred to are not all drawn to scale but may be exaggerated to illustrate aspects of the invention and in this respect the drawings should not be construed as limiting.

[0025] The flutter model connection device according to the present invention is mainly used for connecting the main airfoil 1 and the control surface 2 of the aircraft, and is mainly used in the wind tunnel test of the flutter model. Usually, in the test, the rudder surface 2 will pivot around an axis relative to the main airfoil, therefore, no matter whether the connecting device of the flutter model includes a hinge structure, there is always a theoretical pivot axis in the flutter model. The theoretical position of such rudder surface pivot axis 4 is figure 2 clearly shown in.

[0026] In the present invention, the flutter model connection device is advantageously configured without a hinge and includes the structure of the leaf spring 3 . In other words, t...

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Abstract

The invention relates to a flutter model connecting device which is used for connecting a main airfoil in the flutter model with a rudder surface. The flutter model connecting device forms a no-hingestructure and is composed of a plurality of plate springs. The flutter model connecting device is configured in the extending direction of the main airfoil of the model. Two ends of the body part of the plate spring are respectively connected with the main airfoil and the rudder surface. The flutter model connecting device can realize simulation of rudder surface control rigidity and rudder surface rotation model, and furthermore can obtain linear control rigidity, higher rudder surface connecting strength, a relatively simple spring cross section form and a connecting designing form.

Description

technical field [0001] The invention relates to the field of aircraft design, in particular to an aircraft wing (especially the main wing surface and rudder surface of the aircraft) flutter wind tunnel test process. More specifically, the present invention relates to a flutter model connecting device, which is mainly used for connecting the model main airfoil and the model rudder surface in the aircraft flutter model. Background technique [0002] In the technical field of modeling the main airfoil, the rudder surface and the connection relationship between them for wind tunnel testing, the influence of the control stiffness of the rudder surface on the flutter characteristics is a key content of the research, and sometimes the rudder surface is also considered Effect of deflection on flutter characteristics. Therefore, it is necessary to design a test model suitable for flutter wind tunnel tests according to the realizable form of the structure. The model should better sim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/04G01M9/08
CPCG01M9/04G01M9/08
Inventor 孙亚军张婷婷周铮张苏华陈千一范石磊
Owner COMAC
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