Measuring method of airplane multi-tank vent system oil intermingle test

A technology of ventilation system and measurement method, which is applied in the field of aircraft fuel system test to achieve the effect of real and effective test data

Active Publication Date: 2018-03-02
SHAANXI AIRCRAFT CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the simulation of aircraft roll, pitch, and vapor-liquid mixing and other factors, it is the first time that this method is used to measure the oil spill test

Method used

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  • Measuring method of airplane multi-tank vent system oil intermingle test
  • Measuring method of airplane multi-tank vent system oil intermingle test
  • Measuring method of airplane multi-tank vent system oil intermingle test

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0034] figure 2 Among them, 1-fuel tank, 2-aviation kerosene, 3-ventilation pipeline, 4-collection hose, 5-ventilation hose, 6-flexible collection bag. see figure 2 , this state is the horizontal state of the aircraft and also the test preparation state.

[0035] image 3 Among them, 7-inverted Ω device, 8-collector, 2-aviation kerosene. It can be seen from the figure that when the airflow enters the pipeline, the direction is vertically downward, and the oil mist and oil droplets are further accelerated by gravity, and then they make a circular motion. Through centrifugal force, it is thrown to the inner side of the outer circle, and then flows into the collector.

[0036] Figure 4 Among them, 1-fuel tank, 2-aviation kerosene, 3-ventilation pipeline, 4-collection hose, 5-ventilation hose, 6-flexible collection bag. see Figure 4 , this...

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Abstract

The present invention belongs to the technical field of airplane fuel system tests, and relates to a device for airplane fuel system tests. The device is mainly composed of flexible pipes and flexiblecollection bags. A tank vent system oil intermingle test method for the airplane fuel system tests is provided. The measuring method comprises the steps of adjusting a flight simulation attitude bench and a simulation airplane flight height system to a ready state; installing the devices such as collection flexible pipes, vent flexible pipes and flexible collection bags at exits of vent system pipelines of a test simulation tank; installing an inverted-omega-shaped device at an interface of the vent system of the test simulation tank and the simulation airplane flight height system to refuelthe test simulation tank; simulating the flight attitude and flight height according to a flight envelope to carry out the simulation test, wherein during the test process, fuel may enter the airplanevent system in a certain state, and the fuel entering the vent system can be collected by the flexible collection bags and the inverted-omega-shaped device; and collecting the oil liquid in the flexible collection bags and the inverted-omega-shaped device after the test is ended, and weighing the fuel liquid and obtaining the mass of the intermingled oil of the airplane vent system.

Description

technical field [0001] The invention belongs to the technical field of aircraft fuel system testing, and relates to a test and measurement method for oil leakage in an aircraft multi-tank ventilation system. Background technique [0002] The fuel tank ventilation system is to ensure that the air pressure in the fuel tank is basically consistent with the ambient atmospheric pressure. Since the ventilation pipes of the ventilation system are connected to each fuel tank and the atmosphere, the pitching and rolling of the aircraft during flight will cause the ventilation system to enter the oil and flow to other fuel tanks. On the one hand, the design of the ventilation system ensures that the air pressure in each fuel tank is basically consistent with the ambient atmospheric pressure, and on the other hand, it suppresses the phenomenon of oil spillage, so that the amount of oil spillage is within a small acceptable range. This method is designed to measure the amount of string...

Claims

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Application Information

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IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 乔立楠吕宝军苏茜玲申杰南刘建军孔德良吴川张少锋刘文平周登宇
Owner SHAANXI AIRCRAFT CORPORATION
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