2.3 - Developing a Novel Contactless Sensor for Helicopter Rotor State Measurements

P. Cordisco, E. Vigoni, R. Liu, E. Zappa, M. Redaelli, L. Riviello, A. Rolando, F. Rossi, L. Trainelli, The European Society Of Telemetry, Rudolf-Diesel-Str. 29a, 82216 Gernlinden, Germany
The present contribution concerns the development of an innovative measurement system for rotorcraft applications. This system aims at the real-time acquisition of the motion of a rotor blade in flight, for applications in emitted noise prediction and monitoring, and in rotor state feedback control augmentation. A structured approach to the system design, implementation and testing has been pursued starting from a survey of applicable technologies. Contactless solutions were targeted, in view
more » ... targeted, in view of maximum compatibility with a wide class of vehicles. A first development phase saw the selection of three concepts, all conceived to be mounted on the rotor head and pointing the blade root area, based either on 2-D laser transducers or on vision-based sensors. These were implemented in full scale and laboratory tested to choose the most promising for definitive development. The final solution, a stereoscopic vision-based measurement system, was brought to maturity through further development and laboratory testing, up to fully integration on board a prototype helicopter for ground and flight testing. We detail the various stages in this process, motivating the choices made and illustrating the results in terms of measurement accuracy.
doi:10.5162/etc2016/2.3 fatcat:2efra4aidjauphshxzjeaqfdoq