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A method of dynamic balancing of aircraft propeller by the method of center of mass dynamic correction

A dynamic correction and propeller technology, applied in the field of aircraft maintenance, can solve problems such as uncertainty

Active Publication Date: 2016-06-29
宇翔盛泰(北京)航空科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for dynamically balancing the propeller of an aircraft with a center of mass dynamic correction method, aiming at the fact that there is uncertainty in the actual effect when the vibration value tester is used in engineering according to the traditional trimming method to perform propeller dynamic balancing and trimming The problem is that when the new method is used for dynamic balancing of aircraft propellers, it can guarantee 100% successful one-time trimming, achieving a good effect of getting twice the result with half the effort

Method used

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  • A method of dynamic balancing of aircraft propeller by the method of center of mass dynamic correction
  • A method of dynamic balancing of aircraft propeller by the method of center of mass dynamic correction
  • A method of dynamic balancing of aircraft propeller by the method of center of mass dynamic correction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] Embodiment 1. The dynamic balance trimming effect contrast on TB200 aircraft:

[0119] 1) with the traditional method

[0120] The traditional method is that the propeller vibration value tester directly outputs the calculation result as a solution based on the measured vibration value level and light point position data. The calculation process is solidified inside the tester as a part of the system software and is not disclosed to users as a technical secret , so when using the traditional method, you only need to select the function menu according to the prompts on the tester interface, and there is no problem of selecting the trim coefficient and dynamic correction of the center of mass, and the solution of the traditional method is to install a counterweight at one position.

[0121] The dynamic balance trimming process of the traditional method is as follows:

[0122]

[0123] The vibration value is reduced from 0.46IPS to 0.18IPS when trimming to the 7th time...

Embodiment 2

[0132] Embodiment 2. Comparison of dynamic balance and trimming effects on LE500 aircraft:

[0133] 1) with the traditional method

[0134] The traditional method is that the propeller vibration value tester directly outputs the calculation result as a solution according to the measured vibration value level and light point position data. You only need to select the function menu according to the prompts on the tester interface. There is no selection of trim coefficients and The problem of dynamic correction of the center of mass, and the solution of the traditional method is "trail" in nature, which is characterized in that a counterweight is installed at one position each time, and each balance is carried out on the basis of the previous one, and the final installed balance The weight is the accumulation of the mass of each installed counterweight.

[0135]

[0136] A total of 7 consecutive trimmings using the traditional method achieved an effect of 0.16IPS, and finally...

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Abstract

The invention relates to a method for dynamically balancing the propeller of an aircraft with a center of mass dynamic correction method. A counterweight to be installed at a light point position is divided into two distribution weights to be installed at two adjacent standard installation positions by using the principle of vector synthesis and decomposition. In this way, the composite effect of these two distributed weights is equivalent to the trimming effect of the original counterweight to be installed at the designated light point position; the method of dynamically correcting the center of mass position of the counterweight is used to accurately calculate the weight to be installed at the two standard positions. The distribution of heavy mass improves the calculation accuracy; the accurate calculation of the trim coefficient K of the propeller to be trimmed makes the subsequent trimming process faster. The present invention can directly use the trim coefficient to calculate the mass of the required counterweight according to the measured vibration value, and after accurate decomposition and calculation, the counterweight is installed at the designated standard o'clock position according to the calculation result, and the balance is adjusted at one time. Successful; the method is simple and convenient, not dependent on the operator's work experience; the trimming effect is accurate and reliable.

Description

technical field [0001] The invention relates to a technology in the technical field of aircraft maintenance, in particular to a method for dynamic balancing of aircraft propellers using a center-of-mass dynamic correction method. Background technique [0002] In the current general aviation industry, the propeller power unit is still widely used due to its good low-speed economy. However, as a high-speed rotating part, the errors in the manufacturing and assembly processes will inevitably cause the propeller to produce static and dynamic imbalances after installation, causing the propeller to vibrate during high-speed rotation; In addition to feeling uncomfortable, it also makes the relevant parts of the aircraft bear a large alternating load, resulting in structural fatigue damage, so the propeller must be dynamically balanced to reduce its vibration level. [0003] The cause of the propeller vibration is the mass imbalance caused by its center of mass deviating from the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/38
Inventor 孟现召张洪涛郭跃进张绍群蒋平清唐晓波
Owner 宇翔盛泰(北京)航空科技有限公司
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