A measurement system and test method for airship ground leakage

Abstract

The invention relates to the technical field of air tightness testing, and discloses a measurement system and a testing method for airship ground leakage. The measurement system includes a differential pressure device, a first valve, a second valve, an inflation device and a three-way connector; three The first end of the through connector is connected to the differential pressure device, the second end of the three-way connector is connected to the inflatable device through the first valve, and the third end of the three-way connector is connected to the inflatable end of the airship through the second valve. The measuring system and testing method for airship ground leakage provided by the present invention, by setting the differential pressure device and connecting the differential pressure device, the inflation device and the airship through a tee connector, eliminates the volume difference of the airship under different pressure differences during the testing process. The actual leakage of the airship can be accurately measured, and the leakage of the airship under different pressure differential conditions can be obtained, which has guiding significance for the evaluation of the processing and manufacturing quality of the airship, which can improve the prediction accuracy of the airship flight time and reduce the flight safety risk of the airship. .

Description

technical field [0001] The invention relates to the technical field of airtightness testing, in particular to a measurement system and a testing method for airship ground leakage. Background technique [0002] A stratospheric airship is an aircraft that relies on buoyant gases such as helium or hydrogen to provide buoyancy. The air density in the stratosphere is low, so stratospheric airships are huge and expensive. Airship capsule leakage is an important indicator, which directly determines the dwell time of the airship. There are many sources of airship leakage, mainly including the capsule material itself (including the airtightness of the material body and the leakage caused by the change of airtightness caused by rubbing during processing, handling, inflation, etc.), the interconnection of the capsule material And valves, fans and other equipment installed on the capsule material. Through the ground test, the leakage of the airship capsule can be quantitatively measu...

AI Technical Summary

Problems solved by technology

The operating pressure difference of the stratospheric airship is relatively small relative to the atmospheric pressure, which is on the order of one percent of the atmospheric pressure. The change of the atmospheric pressure has a great influence on it. In addition, the temperature change will also cause the actual pressure difference of the airship to fluctuate in a wide range during the test process, resulting in The test results cannot truly reflect the actual leakage of the airship

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