Thermo-balance

A technology of high-temperature balances and balances, applied in measuring devices, instruments, aerodynamic tests, etc., can solve the problems of large size, small temperature difference, complex structure, etc., and achieve the effect of optimized shape structure, reduced impact, and simple structure

Active Publication Date: 2017-11-21
中国空气动力研究与发展中心超高速空气动力研究所
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  • Abstract
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AI Technical Summary

Problems solved by technology

But it can only be used in occasions where the temperature is not too high and the temperature difference is not too large.
[0005] The water-cooled balance is to pass cooling water inside the balance to cool the balance components. The advantage is that the cooling effect is good, but the disadvantage is that the structure is complex, the size is large, and the water pressure affects the measurement.

Method used

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Embodiment Construction

[0021] specific implementation plan

[0022] The technical solutions of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0023] figure 1 It is a schematic diagram of the three-dimensional structure of the high-temperature balance of the present invention. The balance pole 1 is an integral rod-shaped structure. The front end is matched with the test model through a cone section, and the screw thread is connected to the test model. The rear end is connected by a double-ended nut. It is connected to the support mechanism by means of a balance rod 1. At the end of the straight section of the balance pole 1, there is a square force-sensitive beam 3 for pasting the sensitive element 4. Threads are provided behind the force-sensitive beam 3. The protective sleeve 2 is connected to the balance by threads. On the pole 1, the sensitive element 4 is protected from the test air flow. A marking groove 5 for marking the measurin...

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Abstract

The invention belongs to the field of wind tunnel aerodynamic test equipment and specifically relates to a thermo-balance. According to the invention, the flat tail part of a balance support rod is provided with a tetragonal force-sensitive beam structure used for adhering a sensitive element. A protection sleeve is in threaded connection with the balance support rod and sleeves the force-sensitive beam so as to protect the sensitive element adhered to the force-sensitive beam against effect of air flows. According to the invention, deformation of the force-sensitive beam is measured through the sensitive element, so that the aerodynamic force acting on the surface of a model is measured.

Description

technical field [0001] The invention belongs to the technical field of aerodynamic testing, and relates to a high-temperature balance, which is used for measuring the aerodynamic force acting on a model when the temperature of the wall surface of the model is relatively high. Background technique [0002] In aerodynamic tests, a balance is used to measure the aerodynamic forces acting on the test model. In a pulse-type wind tunnel, the cold wall model is generally used to measure the aerodynamic force acting on the model wall, but when the real aircraft is flying, the surface temperature of the aircraft rises rapidly under the action of high-speed airflow, in order to measure the effect of the temperature on the model wall The effect of aerodynamic measurements requires preheating of the model. When the model is heated, when the internal balance is used, the sensitive components of the balance will be placed in the temperature field of the model, and the aerodynamic measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06
CPCG01M9/062
Inventor 赵荣娟吕治国黄军刘施然
Owner 中国空气动力研究与发展中心超高速空气动力研究所
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