Periodic Reporting for period 3 - Constance (Flight Critical Wireless Slip Ring for Civil Tiltrotor)
Reporting period: 2020-02-01 to 2021-05-31
Slip rings are necessary for monitoring of flight-critical electrical equipment in the prop-rotor system. Additionally, during experimental flight activities, slip rings are required to transmit instrumentation data across the rotating to non-rotating systems boundary. The slip ring is required to deliver sufficient power to the rotating system to operate the rotating portion of the slip ring and the electronic control and data management systems in the rotor.
A contactless transfer is highly desired for their high bandwidth and reliability capabilities to support flight-critical signals and/or large volumes of experimental data.
The aim of Constance is therefore to enable an innovative flight critical contactless rotating power and data transfer unit (CRPDT) to be developed for demonstration on the flying technology demonstrator, at TRL6 which provides electrical power and a bi-directional data link to components mounted on the prop-rotor.
In order to meet the overall safety objectives the TD assumes a dual power and data channel on each rotor including a redundant azimuth sensor. The development of the flapping sensor and related flapping sensor controller are covered in the Clean Sky 2 FlapSense program. Optionally an Ethernet data channel for the Flight Test Instrumentation can be connected.
A second PDR has been held confirming that the new design complies with the requirements of the TM.
The detailed design of Constance is currently being finalised and the first prototype parts have been manufactured and are tested.
One of the main impacts of this concept is to aim to deliver superior vehicle productivity and performance. Constance will still be the first aerospace certified wireless slip ring. This enables a safe and highly reliable link in the flight control system, which is a crucial technology component in the NGCTR.