Rotor Track & Balance

Before a repaired rotor blade is delivered to the customer, it must be balanced. In order to adjust the rotor blade in terms of weight distribution to the factory values, which is important for conformity with the other rotor blades. The better the balance and aerodynamic shape of the rotor blade is adjusted after repair, the fewer flights are needed at the customer to balance the rotor blade set. However, traditional static balancing only considers blade mass centre of gravity measurements and adjustments.

Innovation Track 3: Developing a testing facility to reduce maintenance costs

The purpose of the project is to develop an innovative helicopter rotor blade static testing facility capable of measuring the properties of rotor blades. The facility will measure all the blade properties that are relevant for the blade dynamic behaviour. The aim is to use this information for a blade adjustment advice, prior to the dynamic Rotor Track Balancing (RTB) of the blades. The ultimate goal is to reduce the number of required flights for RTB and thus to reduce helicopter maintenance costs for Defence. 

Project status

Runtime: May 2016 – May 2019

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Parties involved

More information

For any questions about the project (status) or if interested to collaborate, please contact: 
Richard Bakker (NLR) Richard.Bakker@nlr.nl or Marco Brinkman (SPECTO) M.Brinkman@spectoaerospace.com