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Flutter model center of gravity positioner

A technology of positioning device and flutter model, which is applied in the field of aerial measurement, can solve the problems of operation measurement value error and large dispersion, achieve the effect of small error and dispersion, and ensure measurement stability

Active Publication Date: 2012-01-18
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

This measurement method has a large error and dispersion of operating measurement values

Method used

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  • Flutter model center of gravity positioner
  • Flutter model center of gravity positioner
  • Flutter model center of gravity positioner

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Embodiment Construction

[0014] The present invention will be described in further detail below. see Figure 1 to Figure 4 , a center of gravity positioning device for a flutter model, characterized in that it consists of a load-bearing frame, two spirit levels 7, a center of gravity positioning assembly 8, two model limit assemblies 9 and a center of gravity positioning rod 10;

[0015] (1) The load-bearing frame is composed of a rectangular bottom plate 1, a top plate 2 with the same size as the rectangular bottom plate 1, four uprights 3 and four adjustable feet 4, the four uprights 3 are parallel to each other, and the lower ends of the four uprights 3 are respectively parallel to the rectangle The four corners of the bottom plate 1 are connected as a whole by bolts or welding, the upper ends of the four columns 3 are respectively connected with the four corners of the top plate 2 by bolts or welding as a whole, the hook is installed in the center of the top plate, and the four adjustable feet 4 a...

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Abstract

The invention belongs to aviation measurement technology, and relates to a flutter model center of gravity positioner. The flutter model center of gravity positioner is characterized by comprising a bearing framework, two level meters (7), a center of gravity positioning assembly (8), two model spacing assemblies (9) and a center of gravity locating lever (10). The flutter model center of gravitypositioner has the characteristics of a small error of a measured value and small discreteness. By utilizing a static balance principle and a model spacing device to restricting degree of freedom of model rotation, by utilizing the center of gravity locating lever to substitute a plumb, measurement stability is effectively guaranteed.

Description

technical field [0001] The invention belongs to the aerial measurement technology, and relates to a center-of-gravity positioning device of a flutter model. Background technique [0002] Center of gravity position data is very important to the flutter model, which is directly related to the accuracy of simulating the real aircraft. However, there has not been a set of equipment for professionally measuring the position of the center of gravity of flutter models for a long time. At present, we can only rely on the simple "suspension method" to measure the center of gravity of the flutter model. Hang the flutter model at a single point with a thin line. When the model is stationary, hang a thin line of a hanging weight at the hanging point. The relative center of gravity position line of the model is obtained by using the principle of collinearity. Change the position of the lifting point and repeat the above steps to obtain the second relative center of gravity position lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/12
Inventor 胡志勇魏巍张庚庚
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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