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Novel method for aircraft engine calibration

An aircraft engine and new method technology, applied in the direction of engine testing, jet engine testing, gas turbine engine testing, etc., can solve the problems of high-speed development, many tooling equipment, and long time period that restrict the company's production progress, and save manpower The effect of cost improvement, work efficiency improvement and debugging cycle saving

Active Publication Date: 2020-01-03
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The whole calibration process involves a lot of personnel, tooling equipment and long time period, which has restricted the rapid development of the company's production progress, resulting in a waste of manpower and financial resources.

Method used

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  • Novel method for aircraft engine calibration
  • Novel method for aircraft engine calibration
  • Novel method for aircraft engine calibration

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Experimental program
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Effect test

Embodiment 1

[0022] A new method for aircraft engine calibration, such as figure 2 As shown in , the working range of the engine parameters calibrated in the history is counted, and the central curve of the working range is fitted to serve as the standard model value curve of the same type of aircraft, which is directly written into the engine parameter converter by using the engine parameter ground detection equipment.

[0023] The invention directly writes the standard model value curve into the engine parameter converter through the engine parameter ground detection equipment, replaces the traditional engine parameter calibration method, saves labor costs, improves work efficiency, and has better practicability.

Embodiment 2

[0025] This embodiment is optimized on the basis of embodiment 1, such as figure 2 As shown in , the historical engine parameter calibration data is counted, and the mean curve of the engine parameter calibration data is counted as the central curve of the working range.

[0026] The maximum and minimum values ​​under each scale of the historical data are counted, and all the maximum and minimum values ​​under each scale are fitted to obtain a smooth straight line, and the interval between the fitted curves is the working interval.

[0027] Calculate the mean value under each scale of the historical data, and fit the mean value under each scale to obtain the central curve of the working interval.

[0028] This invention completely subverts the low-efficiency and high-cost working mode that requires 5 people to use 8 sets of tooling equipment and operate for 2 hours. It is transformed into only 1 person using 1 piece of equipment, and the writing of all engine parameter calibr...

Embodiment 3

[0031] A new method of aircraft engine calibration is based on the principle of statistics, statistics, arrangement and overall inference of the engine parameters that have been calibrated in the past, and a probabilistic expression is proposed, which is expressed by the mean value. Through the statistical analysis of a large number of aircraft data, it is found that these calibration data have a relatively fixed working range, and finding the center curve of the working range can be used as the calibration reference data for the same type of aircraft. The calibration of the engine low-pressure guide vane α1 mainly includes the following steps:

[0032] (1) Statistical historical sample data, the voltage value collected by the engine parameter converter with uniform scale is used as the basic value Σ(1, N), and the maximum value α1max=f(10n) under each scale is obtained;

[0033] (2) Similarly, find the minimum value α1min=f(10n) under each scale;

[0034] (3) Connect the max...

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Abstract

The invention discloses a novel method for aircraft engine calibration. According to the novel method, the working range of historically calibrated engine parameters is counted, the center curve of the working range is fitted to serve as a standard model value curve of the same type of aircrafts, and engine parameter ground detection equipment is adopted to directly write the standard model valuecurve into an engine parameter converter. According to the novel method, the standard model value curve is directly written into the engine parameter converter through the engine parameter ground detection equipment, a traditional engine parameter calibration method is replaced, the labor cost is saved, the working efficiency is improved, and good practicality is achieved.

Description

technical field [0001] The invention belongs to the technical field of aircraft engine parameter calibration, and in particular relates to a new method for aircraft engine calibration. Background technique [0002] Engine parameter calibration is an essential and important process in the commissioning phase of the warehouse after the current aircraft assembly is completed. Since there is a large error between the measured value and the standard value when the engine parameters are not calibrated, the engine parameters must be calibrated after the engine is installed for the first time or replaced. In this way, in the process of use and maintenance, it can be more realistic and accurate to monitor whether the state of the engine is normal, or if some parameters are found to be close to the edge of failure, the engine can be inspected and maintained in advance in time to kill the failure in the bud. Ensure the reliable performance and stable life of the engine, and ensure the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/14G01M15/02
CPCG01M15/14G01M15/02
Inventor 金优辉张波查成志邓攀吴玮贺棋冯毅
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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