Loading head for load calibration of a wind tunnel balance

A technology of wind tunnel balance and loading head, which is applied in the testing of machines/structural components, instruments, measuring devices, etc. It can solve problems such as layout form, weight-to-stiffness ratio that are not optimized enough, affect balance calibration performance and accuracy, etc., and achieve reduction Effects of weight, improved calibration level, and accurate calibration

Active Publication Date: 2021-06-04
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The existing loading head structure has problems such as the layout form and the weight-to-stiffness ratio are not optimized enough, which affects the performance and accuracy of balance calibration. Therefore, it is necessary to propose a more reasonable technical solution to solve the deficiencies in the existing technology

Method used

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  • Loading head for load calibration of a wind tunnel balance
  • Loading head for load calibration of a wind tunnel balance
  • Loading head for load calibration of a wind tunnel balance

Examples

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Embodiment

[0044]For the specific application of the wind tunnel balance, the loading head needs to apply a load force in its calibration work to help the calibration of the wind tunnel balance. The calibration work requires high rigidity and force application accuracy of the loading head. The existing loading head is in the layout form, In terms of stiffness, installation and positioning, it is difficult to meet the calibration requirements of the simulated wind tunnel test belt strut calibration and higher precision, and it is difficult to make the calibration of the wind tunnel balance reach a higher level. This embodiment discloses a loading head structure to solve the technical problems in the prior art.

[0045] Specifically, as Figure 1 to Figure 6 As shown, the technical solution disclosed in this embodiment is:

[0046] A wind tunnel balance load calibration loading head, including a body, a plurality of horizontal loading mechanisms 102 and longitudinal loading mechanisms 101...

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Abstract

The present invention relates to the technical field of wind tunnel aerodynamic test measurement, in particular to the calibration of wind tunnel balances, in particular to a load calibration loading head for wind tunnel balances, including a body on which several horizontal loading mechanisms and longitudinal loading mechanisms are arranged. The horizontal loading mechanism and the longitudinal loading mechanism include horizontal connecting parts and longitudinal connecting parts for applying horizontal force and longitudinal force respectively, and the several horizontal connecting parts are used to provide calibration loads in the four directions of horizontal x and y, so The several longitudinal connections described above are used to provide calibration loads in the two directions of the longitudinal direction z. The invention optimizes the structure of the loading head, and simulates the force of the wind tunnel balance in multiple dimensions by setting multiple horizontal loading mechanisms and longitudinal loading mechanisms, so that the calibration of the wind tunnel balance is more accurate; at the same time, the structure of the body is While meeting the rigidity requirements, it greatly reduces its own weight and further improves the calibration level of the wind tunnel balance.

Description

technical field [0001] The invention relates to the technical field of wind tunnel aerodynamic test measurement, in particular to the calibration of a wind tunnel balance, in particular to a load calibration loading head for a wind tunnel balance. Background technique [0002] When conducting wind tunnel aerodynamic tests of aircraft or ground vehicles, it is necessary to use a strain balance to measure the aerodynamic load it is subjected to. Before the strain balance can be put into use, the calibration work must be completed on the calibration system. [0003] The loading head is the core component in the calibration system of the wind tunnel strain balance and comes in various forms. During calibration, the strain balance is generally installed inside the loading head, and the loading force is applied to the balance through the loading head. Therefore, the loading head is required to accurately transmit the force or moment of the six components to the strain balance, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06G01M9/04
CPCG01M9/04G01M9/062
Inventor 张林李付华梁磊张逊朱本华岳廷瑞薛伟赵亮亮曾轲肖亚琴李振飞
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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