A protective system for anti-icing experiment in icing wind tunnel
A protection system and prevention technology, applied in the field of protection systems, can solve the problems of affecting the flow field of the air duct, the large size of the protective cover, and reducing the accuracy of the experiment, so as to achieve convenient installation, ensure the air tightness of the air duct, and improve system control sexual effect
Active Publication Date: 2021-11-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0003] At present, large-scale icing wind tunnels in China use built-in protective devices to protect the test pieces. The protective cover has a large structure and is only used in large-scale wind tunnels. The built-in protective structure will affect the flow field in the air duct and reduce the accuracy of the experiment.
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[0025] See figure 1 As shown, the present invention discloses a protective system for frozen wind-resistant anti-deceiving experiments, including a flare 4, a shroud 3, an electric heating unit, a pneumatic slide 1 located outside the airway 4. Among them, the air passage 4 is the experimental space of the aircraft wing, and the simulation wing 5 is pre-placed in the air passage 4, and the air carrys the air drip impact in the airway. However, before forming the expected excess cold water droplets, it takes a period of time, still will not reach the standard over-cold water droplets until the cold water droplets are reached, and the standard over cold water does not contact the simulation wing 5. . At this point, the protective cover 3 needs to be protected against the simulated wing 5. like figure 1 Design, the cross section of the shroud 3 is a circular arc shape, and the airway 4 is provided with an arcuate slot 41 with the shape of the shroud. In the present embodiment, the ar...
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The invention discloses a protective system for anti-icing experiments in an icing wind tunnel, which includes an air duct, a protective cover, an electric heating unit, and an air slide table located outside the air duct; the cross section of the protective cover is arc-shaped, An arc-shaped slot matching the shape of the protective cover is provided on the air duct, and the pneumatic sliding table is connected to one end of the protective cover and drives the protective cover to be inserted into the arc-shaped slot or withdrawn from the arc-shaped slot. It is used to protect the simulated wing of the aircraft under test in the experiment. The invention has the advantages of simple operation, simple structure, convenient installation, low energy consumption, convenient maintenance and obvious effect, and can effectively improve the quality of anti-icing and deicing experiments in icing wind tunnels.
Description
Technical field [0001] The present invention relates to the field of anti-oil testing of aircraft, and more particularly to a protective system for ice-free anti-reflection test. Background technique [0002] The aircraft icing has always been one of the main threats of aviation safety, in order to study the aircraft to prevent ice-fried wind cave. Ground anti-excess ice experiments have higher requirements for icing environment, mainly including wind speed, frozen temperature, liquid water content (LWC), average particle size (MVD). At the beginning of the experiment, the spray shelf spray water, and the liquid water hit the surface of the test piece after passing through the surface. Due to the frozen temperature, the liquid water content and the average particle size need to be a period of time after the spray frame is opened. The experimental state is stable before the liquid water in the surface of the test piece does not meet the experimental requirements. At this time, the...
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IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 朱春玲王渊朱程香赵宁苗波陶明杰田甜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS