Method for carrying out dynamic balance on aeroplane propeller by dynamic mass center correction method

Abstract

The invention relates to a method for carrying out dynamic balance on an aeroplane propeller by a dynamic mass center correction method. The method comprises the steps of dividing a counter weight planned to be arranged at a light point position into two sub-counter weights according to a vector synthesis and decomposition principle, and installing the two sub-counter weights at two adjacent standard installation positions to ensure that the synthesis effect of the two sub-counter weights is equivalent to the balancing effect of the original counter weight planned to be arranged at the appointed light point position; accurately calculating the mass of the sub-counter weights planned to be arranged at the two standard positions by a method of dynamically correcting the mass center positions of the counter weights to improve the calculation accuracy; and accurately calculating a balancing coefficient K of the propeller to be balanced to enable a later balancing process to be rapid. According to the method, the mass of a needed counter weight can be directly calculated by the balancing coefficient according to the measured vibration value, accurate factorization and calculation are carried out, and the counter weight is installed at an appointed standard clock position according to the calculation result, so that balancing is successfully carried out once; the method is simple and convenient, and is independent of work experience of an operator; the balancing effect is exact 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...

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

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