A wind tunnel test airflow field rotation measurement device
A technology of rotating measurement and wind tunnel test, which is applied in the field of wind tunnel test, and can solve the problems of affecting the flow field of the point to be measured, increasing the blocking degree of the measuring section, and affecting the accuracy, etc.
Active Publication Date: 2021-05-07
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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Problems solved by technology
Increase the number of measuring points by increasing the number of pressure measuring rakes to improve the measurement accuracy, but the increase in the number of pressure measuring rakes will lead to an increase in the degree of obstruction in the measurement section. Excessively large degree of obstruction will affect the flow field of the point to be measured, thus affecting the accuracy of the measurement. Accuracy
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[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0030] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0031] Such as figure 1 As shown, the structure of this embodiment includes a rotating pipe 1, a fixed end of the air outlet 2, a fixed end of the air inlet 3, a driving mechanism 4, an angular position detection feedback system 5, a pressure measuring rake 6 and a probe rake 7, and the rotating pipe 1. The fixed end of the air inlet 3 and the fixed end of the air outlet 2 are straight pipes for measuring the flow field on the air inlet and ...
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The invention discloses a wind tunnel test airflow field rotation measuring device, which includes a rotating pipe, a pressure measuring rake, a probe rake, an angle position detection feedback system and a driving mechanism, and the two ends of the rotating pipe are respectively connected to the fixed end of the air inlet and the fixed end of the air outlet, the angular position detection feedback system is arranged between the rotating pipe and the fixed end of the air outlet, the driving mechanism is arranged between the rotating pipe and the fixed end of the air inlet, and along the wall of the rotating pipe Several pressure measuring rakes and probe rakes, the measuring ends of the pressure measuring rakes and probe rakes extend into the rotating pipeline along the radial direction of the rotating pipeline. The use of the invention can greatly improve the test accuracy, further measure the real data of the flow field in the intake and exhaust pipes, improve the test efficiency, greatly reduce the labor intensity of the model post personnel, and reduce human errors and energy consumption.
Description
technical field [0001] The invention relates to the field of wind tunnel tests, in particular to a wind tunnel test airflow field rotation measurement device. Background technique [0002] Measuring the airflow field of a wind tunnel test by means of pressure measuring rakes and porous probes is a basic means and method in wind tunnel tests. In the previous air intake and exhaust tests in the wind tunnel, the pressure measurement rake or probe rake in the aircraft inlet model was fixed according to a certain distribution of measurement points, although in this way, more tests of the flow field at the measurement point were obtained However, there are still many deficiencies in the above method. First, the flow field in all directions in the inlet cannot be fully understood, especially when the limit attitude boundary is tested, and the flow field inside the inlet is unsteady; the second is The test data obtained by one test cannot fully reflect the flow field information of...
Claims
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IPC IPC(8): G01M9/06
CPCG01M9/06
Inventor 梁鉴陈洪徐彬彬巫朝君许可陈祖荣
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT