Parallel inter-stage separation free-flying wind tunnel test device with the center of mass at the interface
A technology of inter-stage separation and wind tunnel testing, which is applied to measuring devices, aerodynamic testing, and testing of machine/structural components, etc. It can solve problems such as destroying the shape of the model, obtaining inconsistent degrees of freedom, and reducing the reliability of test results, etc. , to achieve the effect of ensuring reliability
A technology of inter-stage separation and wind tunnel testing, which is applied to measuring devices, aerodynamic testing, and testing of machine/structural components, etc. It can solve problems such as destroying the shape of the model, obtaining inconsistent degrees of freedom, and reducing the reliability of test results, etc. , to achieve the effect of ensuring reliability
CN107782526BActive Publication Date: 2019-05-24CHINA ACAD OF AEROSPACE AERODYNAMICS
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0027] Such as figure 1 , figure 2 As shown, a parallel inter-stage separation free-flying wind tunnel test device with the center of mass located at the interface includes a first model 1, a second model 2, a pin holder 3, a first fixing nail 4, a second fixing nail 5, The first pull pin 6, the second pull pin 7, the first spring 8, the second spring 9, the pin 10; the pin pull frame 3 is connected with the first pull pin 6 and the second pull pin 7 respectively, and the primary fixing nail 4, Insert the first model 1 through the first spring 8, and insert the secondary fixing nail 5 into the second model 2 through the second spring 9; 2 Insert the end face of the tail into the first model 1 and the second model 2, so that the first model 1 and the second model 2 are dock...
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A parallel stage separation free flight wind tunnel testing device with the mass center located on the interface comprises a first model, a second model, a pull pin frame, pins, a first fixing nail, asecond fixing nail, a first spring, a second spring, a first pull pin and a second pull pin. The first pull pin, the second pull pin and the pull pin frame are installed together through the two pins, the first fixing nail and the second fixing nail penetrate through respective springs and are inserted into the first model and the second model, and the pull pins installed just are inserted into the models from the model tails and are just inserted into a round hole formed by a semi-circular groove of the first fixing nail and a round hole formed by a semi-circular groove of the second fixingnail to lock the whole model set. It is ensured that the first model and the second model can be fast and effectively separated without interference, the problem that a parallel stage separation freeflight wind tunnel test with the mass center located on the interface cannot be realized is solved mainly, and the defect that two stages cannot release the freedom degree at the same time due to theprevious model fixing mode is overcome.
Description
technical field [0001] The invention relates to a free-flying wind tunnel test device for separation between parallel stages. Background technique [0002] The model free-flying wind tunnel test is a commonly used research method to study the dynamic aerodynamic characteristics of aircraft, and it can also be used in the research of aircraft multi-body interference. The basic method of the test is to eject the model at high speed against the direction of the airflow after the flow field in the wind tunnel is stabilized. The model will fly freely in the wind tunnel for a short time to test the safety of the separation of the multi-stage aircraft. At the same time, high-speed photography is used to monitor the model through the observation window. After shooting, the attitude trajectory of the aircraft model flying freely can be obtained, and the dynamic aerodynamic parameters of the aircraft can be obtained after data processing in the later stage. The separation between the...
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Patent Timeline
24 May 2019
Publication
CN107782526B
- IPC
- G01M9/04; G01M9/08
- CPC
- G01M9/04; G01M9/08
- Inventors
- θι£; ηθͺθΆ