RACER Compound Helicopter: Operational Wireless FTI Data Transfer from ROTOR's up to Fuselage

Acquiring helicopter rotor data is always a very sensitive point that requires at least "effort and special attention". This data acquisition is generally managed by a "physical link" (slip ring for example) whereas wireless products are now present everywhere with a technology more than promising. The objective of this paper is to show how the wireless technology was developed within the framework of RACER COUMPOUND HELICOPTER to monitor the three rotors in accordance with CS29 regulations for the mechanical assembly, DO160 rules for environmental constraints and IRIG 106 standard for Flight Test Instrumentation domain notwithstanding that this wireless acquisition means will be used on a daily basis to monitor the data from the three rotors of the RACER. The paper provides an overview of this project, supported by the CEE (Horizon 2020/CS2), and from the initial requirement up to the operational results obtained during the flight test campaigns carried out on the H175. Finally, this paper, based on this use case ( RACER oriented) , aims also to open the perspective of using such a wireless application on helicopters in service in the frame of health monitoring system