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Arenaproject PTC February 2017 Bror Tonsjö Level 1

Reference number
Coordinator Swerea IVF AB - Avdelningen för Tillverkning
Funding from Vinnova SEK 125 000
Project duration March 2017 - December 2017
Status Completed

Important results from the project

The project aims to develop the automatic balancing technique with a balance ring consisting of a ring with freely moving balls and adapt it for airplane applications. The technology is today used with great success in handheld grinders and washing machines. The project goal has been to produce a test rig that simulates the rotor dynamics of a propeller where the imbalance can be varied continuously during operation to simulate real conditions. Also a balance ring where the ball raceway can be exchanged has been developed with the aim of increasing the balancing precision.

Expected long term effects

The developed test rig and balance ring provide a very good foundation for continued development of automatic balancing technology by optimizing the balancing precision and locking mechanism for critical speed. The demonstrator will significantly facilitate linking stakeholders to the project as it is possible to demonstrate the effect effectively and we have contacts with stakeholders that will be contacted.

Approach and implementation

The test rig is designed to provide spring packs to imitate the rotor dynamics of an aircraft and the imbalance can be varied continuously. It is powered by an engine where the speed can be varied to simulate a flight. During operation, vibrations will be measured in different directions, impeded imbalances and speed.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 25 November 2019

Reference number 2017-01684

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