A Combined Chamber for Flow Field Video and Aerodynamic Load Measurements

Abstract

The invention discloses a combined cavity for flow field video and aerodynamic load measurement, which includes a base body, the base body includes a front end and a rear end with an integrated structure, and a frame beam connecting the front end and the rear end, the front end, A cavity structure is formed between the rear end and the frame beam, and a protruding connection part is provided on the front end and the rear end, and the function board is arranged on the frame beam between the front end and the rear end, and the function board is movably connected with the side of the connection part , a bottom plate is arranged inside the frame beam, and the bottom plate is movably connected with the connecting portion. The present invention can be simultaneously applied to cavity unsteady pulsation pressure measurement test, flow display test, acoustic-vibration load characteristics research, etc.; the present invention has a simple combination of components, convenient disassembly and assembly, simplifies the test process, shortens the cycle, and improves the test performance. efficiency.

Description

technical field [0001] The invention relates to the interdisciplinary technical field of experimental fluid mechanics, aerodynamics, etc., and specifically relates to a combined chamber for flow field video and aerodynamic load measurement. Background technique [0002] Due to its special structural form and characteristics, the cavity structure is a typical structure that commonly exists in the aerospace and navigation fields and industrial equipment. It is mainly used for articles, combat weapons, power fuel storage, and landing gear storage. It usually has It has the characteristics of many geometric parameters, complex structure, unconventional configuration and harsh working environment. However, the cavity in the wind tunnel test is different from the structure of the simple equipment on the ground. Because of the complexity of the high-speed flow around the structure, the aerodynamic load on the cavity structure is complicated, and the external flow Sensitive to the ...

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Problems solved by technology

[0004] However, it can be seen from many existing examples at home and abroad that the research process for specific problems often includes a variety of test types, but the design and processing of the above three cavity models are relatively independent of each other, requiring multiple sets of tests Models can complete all the test content to obtain aerodynamic load data, resulting in a significant increase in the cost of cavity model processing

At the same time, for different test types, it is necessary to disassemble the test device and frequently replace the cavity model, which significantly increases the workload of the wind tunnel test; the most critical thing is that it is difficult to simultaneously integrate and obtain the flow field structure of the cavity structure Video measurements, aerodynamic properties, static pressure distribution, noise loading and vibration response

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