The aim of this project is the improvement of the loads and efficiency prediction of control surfaces at High Mach and flight Reynolds numbers. The partner will have to design and manufacture model parts to be tested in a wind tunnel in flight conditions (speed and Reynolds number). In particular a new concept of hinge moment balance and modification of an existing model provided by the Topic Manager will be designed and modified regarding the tests requirements. For crosscheck purpose, the partner will have to propose two different measurements techniques for hinge moment. Please refer to the full and formal topic descriptions published in this call.