COMPANION · COMmon Platform and Advanced INstrumentation ReadIness for ultra efficient propulsion demonstratiON

The purpose of the COMPANION project is to define, design and prepare a common flight test demonstrator platform to enable the validation of ultra-efficient propulsion systems developed in Clean Aviation Call#01 projects at full scale and in a wide envelope of realistic operational conditions.Given the clear requirement in the roadmap planning of the CA projects OFELIA and SWITCH for flight test demonstrations in Clean Aviation Phase 2 to achieve TRL 6 before the end of the program in 2030, a corresponding platform must be prepared to be available in due time.The project targets to prepare the flight test platform up to CDR Opening (dMG5) maturity. The flight clearance process will be opened in COMPANION, but will need to continue with the installation of the demonstrator engines in follow-up projects in Clean Aviation Phase 2.The project plan proposes to progress on the preparation of a common flight test demonstrator platform on the basis of an Airbus A380 aircraft with one of the inboard engine pylons modified to accommodate versatile ultra-efficient proposal systems which are currently under development for a Clean Aviation Short Range and Short and Medium Range concept aircraft, namely an Open Rotor test engine and a hybrid electric Ultra High ByPass Turbofan. The flight test aircraft will ultimately be fully equipped to host a diversity of standard and special flight test instrumentation that will be defined in close cooperation with the projects OFELIA and SWITCH to provide all data required to quantify the performance of the demonstrator engines under operational conditions. The test aircraft will allow the demonstrator engines to operate on conventional kerosene and SAF fuel at blending rates.""