A captive balloon limited wind speed static balance characteristic ground surface drag simulating test apparatus and method

A tethered balloon and simulation test technology, applied in the direction of measuring devices, machine/structural component testing, instruments, etc., can solve difficult free flight tests, similar buoyancy is difficult to do, and no soft skin structure wind tunnel tests have been found Issues such as similarity criteria or test methods

Active Publication Date: 2017-05-31
CHINA SPECIAL TYPE FLIER RES INST
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Problems solved by technology

[0003] Wind tunnel test technology: One of the main means of analyzing the static balance characteristics of the aircraft is based on the analysis of wind tunnel test data. However, since the large and medium-sized tethered balloons are of soft structure and the length can reach 50m or more, the wind tunnel test It is necessary to carry out model scaling, but after scaling, it is difficult to achieve complete similarity in strength and stiffness of the model, and it is even more difficult to achieve similar buoyancy. After consulting relevant literature and patents, no similarity criteria or si

Method used

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  • A captive balloon limited wind speed static balance characteristic ground surface drag simulating test apparatus and method

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proportion 3208

[0028] The model scale ratio of the tethered balloon scale model (13) is 3.208:1; the towing vehicle (6) adopts a semi-trailer; a winch (7) is installed on it, and the winch (7) is connected and rotated through a cable (8) device (11), the rotary connector (11) is connected to the tethered balloon scale model (13) through the rigging (10); the front end of the tethered balloon scale model (13) is equipped with a nose cone (12);

[0029] A supporting platform (9) is installed on the towing vehicle (6), and an anemometer (1), a mooring tower (2), and an air cushion (5) are installed on the supporting platform (9); the anemometer (1) measures the wind direction of the environment and wind speed; the mooring tower (2) and the air cushion (5) are used to recover the support and lock the mooring balloon scale model (13).

[0030] The tethered balloon scale model (13) includes a main airbag, an empennage, a fairing (pod, etc.), pressure regulating equipment, power supply equipment, o...

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Abstract

The invention brings forward a captive balloon limited wind speed static balance characteristic ground surface drag simulating test apparatus and method. A captive balloon scaled model and a dragging vehicle are comprised. Limited wind speed static balance characteristic analysis of a captive balloon is completed through a ground trailer dragging method. In the design of the test, according to the trailer performance, buoyancy, aerodynamic, gravity and other factors, a certain shrink ratio is set (the shrink ratio is not greater than 5: 1, far less than the wind tunnel test shrink ratio, closer to the real results), and the model after the scaling ensures a same shrink ratio between the outside force applied to the captive balloon and the moment of the captive balloon so as to guarantee that static balance characteristics can reflect the real captive balloon characteristics.

Description

technical field [0001] The invention belongs to the field of aerostat test and flight test. Specifically, it belongs to the technical field of static balance characteristic test of aerostats, and is applicable to the ground test technology of static balance characteristics of flexible body aerostats. Background technique [0002] The static balance characteristic test of the limit wind speed of the aerostat is an important means to test the performance of the aerostat. At present, there are mainly two test methods: the wind tunnel test and the free flight test in the real environment. [0003] Wind tunnel test technology: One of the main means of analyzing the static balance characteristics of the aircraft is based on the analysis of wind tunnel test data. However, due to the soft structure of large and medium-sized tethered balloons, the length can reach 50m or more, and the wind tunnel test It is necessary to scale the model, but after scaling, it is difficult to achieve ...

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Application Information

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IPC IPC(8): G01M99/00
CPCG01M99/008
Inventor 黄龙太曾友兵张红卫齐天源张超梁小玲罗战虎田瑞罗奔
Owner CHINA SPECIAL TYPE FLIER RES INST
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