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Airplane APU (Auxiliary Power Unit) performance detecting method

A detection method and aircraft technology, applied in the aviation field, can solve problems such as high maintenance costs, insufficient troubleshooting, and potential safety hazards, and achieve the effects of complete and accurate performance parameters, reduced maintenance costs, and guaranteed use safety.

Inactive Publication Date: 2012-02-08
AIR CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the APU is not working properly, the aircraft will not be able to start without the help of other power units
At present, many airlines obtain APU data by recording workers on the plane. Due to the lack of a complete and accurate data basis, there is a large deviation between the analysis of the APU and the objective reality, resulting in large errors in APU performance and affecting The quality of APU monitoring leads to wrong judgments on APU performance, which not only brings safety hazards, but also makes troubleshooting not timely enough, resulting in high maintenance costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]Embodiment 1: from SITA network control center and ADCC network control center remote real-time acquisition aircraft APU operation state ACARS message, by ACARS message decoder the described aircraft APU operation state ACARS message is decoded to obtain the information with aircraft APU operation The electronic document is saved to the database server. The APS3200 model APU operation information includes the exhaust temperature EGTA is 629, the compressor inlet temperature LCIT is 33, the start time STA is 59, the wing time TSR is 4183 and the bleed air pressure PT is 3.66 , the PDI value calculated by the formula PDI=((EGTA-LCIT) / 682)*0.2+(STA / 90)*0.3+(TSR / 5000)*0.35+(3 / PT)*0.15 is 0.79, which is normal, It can be used normally.

Embodiment 2

[0024] Example 2. Obtain the aircraft APU operation state ACARS message remotely and in real time from the SITA network control center and the ADCC network control center, and decode the aircraft APU operation state ACARS message through the ACARS message decoder to obtain an electronic document with aircraft APU operation information and save it In the database server, the APU operation information of aircraft GTCP131-9A model includes exhaust gas temperature EGTA is 544, compressor inlet temperature LCIT is 31, start time STA is 48, on-wing time TSR is 2642 and bleed air pressure PT is 3.76, through The formula PDI=((EGTA-LCIT) / 642)*0.3+(STA / 60)*0.2+(TSR / 5000)*0.35+(3.5 / PT)*0.15 calculates the PDI value to be 0.72, which is normal and can be normal use.

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PUM

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Abstract

The invention discloses an airplane APU (Auxiliary Power Unit) performance detecting method. The airplane APU performance detecting method is characterized by comprising the following steps of: obtaining an airplane APU operation state message; decoding the airplane APU operation state message by using a data decoder to obtain an electronic document and saving the electronic document in a database server; and processing the airplane APU operation information in the electronic document to judge the airplane APU performance. According to the invention, the APU performance can be accurately detected, the safety in use can be guaranteed, the troubleshooting can be made in time, and the maintenance cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of aviation, and in particular relates to a method for detecting the performance of an aircraft APU. Background technique [0002] APU: AIRBORNE AUXILIARY POWER (airborne auxiliary power unit), this device mainly provides electricity and compressed air for the aircraft when it is on the ground, and a small amount of APU can also provide additional thrust to the aircraft. Before the aircraft takes off on the ground, the main engine is powered by the APU, so that it does not need to rely on ground electricity and air source vehicles to start the aircraft. When on the ground, the APU provides electricity and compressed air to ensure the lighting and air conditioning in the cabin and cockpit. When the aircraft takes off, all the engine power is used for ground acceleration and climb, which improves the take-off performance. After landing, the APU still supplies electric lighting and air conditioning, so that th...

Claims

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Application Information

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IPC IPC(8): B64F5/00
CPCF05D2270/05F05D2270/0831F02C9/00F05D2220/50Y02T50/677F05D2270/303F02C7/32F05D2260/80B64F5/00B64D41/00G01M15/14Y02T50/60
Inventor 顾祝平王炳正郑逢亮马洪涛黄磊毛浩权
Owner AIR CHINA LTD
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