Helicopter Rotor Test Rig (RoTeSt) in DNW-Application and Results (Hubschrauber-Versuchanlange RoTeSt im DNW-Einsatz und Ergebnisse).

摘要

The calibration and operation of the model helicopter test rig, 'RoTeSt', in DNW is discussed. The choice of calibration factors for the different aspects of the rig is addressed, and a block diagram of the signal flow is given. Wind tunnel tests conducted on various rotors using the rig are reviewed, comparing results between model rotor operation points and full-scale flight states. Comments are made on: the derivative of the longitudinal angle of control as a function of velocity, the correction values for rotor angle of attack for various working section configurations and mast angles, and on the effect of tunnel temperature on the rotor thrust for constant rotor speed. Results are compared for various rotors including accelerations, dynamic momentum behaviour, and measurements of downwash. Translations, West Germany, German language, Great Britain. (aw)