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Aircraftair-tight cabin air tightness checking method

A technology for airtight inspection and airtight cabins, which is used in fluid tightness testing, machine/structural component testing, and liquid tightness measurement using liquid/vacuum degree to achieve clear principles, improve efficiency, and save labor costs. Effect

Inactive Publication Date: 2018-02-13
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for airtightness inspection of an aircraft airtight cabin, to solve or at least alleviate at least one problem in the background art

Method used

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Embodiment Construction

[0015] A method for checking the airtightness of an aircraft airtight chamber, in which a smoke generator is placed in the airtight chamber of the aircraft to be tested; the airtight chamber of the aircraft to be tested is pressurized, and the smoke generator is controlled to release smoke, and it is observed whether there is smoke outside the airtight chamber Leakage, mark where there is a smoke leak.

[0016] In this embodiment, taking the airtight inspection of the fuselage from the airtight chamber as an example, when the pressure in the airtight chamber of the aircraft to be tested reaches the test pressure value, the smoke generator is then controlled to release smoke. It can be understood that multiple test pressure values ​​can be set, gradually increasing the air pressure value in the airtight chamber of the fuselage from small to large, so as to check the airtightness under different pressure states, and accurately grasp the pressure of each part of the airtight chamb...

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Abstract

The invention discloses an aircraftair-tight cabin air tightness checking method and relates to the technical field of aircraft air tightness checking. The aircraftair-tight cabin air tightness checking method specifically comprises the steps that a smoke generator is placed in an aircraftair-tight cabin to be checked; theaircraftair-tight cabin to be checked is pressurized, the smoke generator iscontrolled to release smoke, whether smoke leakage exists outside theair-tight cabin or not is observed, and the position where smoke leakage exists is marked. The aircraftair-tight cabin air tightness checking method has the advantages that the aircraftair-tight cabin air tightness checking method is clear in principle and simple in operation, all air leakage sources can be visually checked out,sensory finding of air leakage sources is avoided, the labor cost is saved, the efficiency is improved, and a guidance can be provided for aircraft body air tightness and blockage.

Description

technical field [0001] The invention relates to the technical field of airtight inspection of aircraft fuselages, in particular to an airtight inspection method for an airtight cabin of an aircraft. Background technique [0002] Airtight design is a very important part of aircraft fuselage structure design, which is directly related to the safety and comfort of the aircraft. Before the aircraft is manufactured and delivered, airtight inspection of the fuselage must be carried out, and the source of air leakage is found and sealed through pressurization to ensure that the pressure holding time meets the structural design requirements. The traditional method of finding the source of air leakage is to use direct senses, that is, to roughly judge the area of ​​the air leakage by listening to the sound, and then use the hand to sense whether there is wind at a close distance. For larger air leakage sources, after blocking the large air leakage sources, multiple trial charging an...

Claims

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Application Information

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IPC IPC(8): G01M3/32
CPCG01M3/3272
Inventor 聂荣华梁尚清张引利刘洪权肖允庚
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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