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Testing method for combustible liquid emission of airplane

A test method and aircraft technology, applied in the direction of aircraft component testing, etc., can solve problems that have not been carried out, and achieve a comprehensive effect of flight status

Active Publication Date: 2017-06-06
CHINESE FLIGHT TEST ESTAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prior to this, my country has not conducted flight tests and ground tests on the discharge of flammable liquids from aircraft.

Method used

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  • Testing method for combustible liquid emission of airplane
  • Testing method for combustible liquid emission of airplane

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0054] In the "aircraft flammable liquid discharge test" for aircraft airworthiness certification, the "aircraft flammable liquid discharge test method" was used to complete the ground test and flight test.

[0055] 1) Ground test

[0056]Use clean water for liquid discharge ability verification, through the aircraft flammable liquid discharge test equipment, spray clean water to the engine compartment at a flow rate of 11.4L / min, spray clean water to the APU compartment at a flow rate of 5L / min, and let the clean water pass through the drain pipe and The drain hole discharges out of the machine. Measure the amount of water collected.

[0057] Table 1 The results of the engine compartment draining ability test when the engine is parked on the ground

[0058]

[0059] The ratio of the amount of water collected in the container at the drain hole of the engine compartment to the amount of water injected into the engine compartment was 98.4%. The maximum liquid volume in a s...

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Abstract

The invention discloses a testing method for combustible liquid of airplane. The 25th section of <china civil aviation rules> has definite demand for combustible liquid emission of engine, APU and airframe in combustible liquid leakage region. The testing method for combustible liquid of airplane must be established for meeting demand of airworthiness evidence. The fact about flammable liquid letting out from combustible liquid leakage region of engine compartment, APU compartment and airframe capable of being safe ejected without stockpile is proved in flight test and ground test, and else danger is not generated during ejectment. The testing method for combustible liquid of airplane is used for completing flight test and ground test in test for combustible liquid of airplane of airworthiness evidence of airplane. The testing method is safe and reliable and comprehensive state in flight.

Description

[0001] Technical field: [0002] The invention is applied to flight test and ground test of flammable liquid discharge in transport aircraft engine compartment, APU compartment, equipment compartment and other flammable liquid leakage areas. [0003] Background technique: [0004] In Part 25 of the Civil Aviation Regulations of China, there are clear requirements for the discharge of flammable liquids in the areas where flammable liquids leak from engines, APUs, and aircraft fuselages. In order to meet the requirements of airworthiness certification, it is necessary to establish an aircraft flammable liquid discharge test method. In the flight test and ground test, it has been proved that the flammable liquid leaked from the engine compartment, APU compartment, and the flammable liquid leakage area of ​​the aircraft fuselage can be safely discharged without accumulation, and no other danger will be caused when discharged. Prior to this, my country has not conducted flight test...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/60
Inventor 李瑜屈霁云宋江涛魏海涛王欢
Owner CHINESE FLIGHT TEST ESTAB