I. Bensignor
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1
The TU Delft Characterization model for roTor aeroacoUstiCs (TUC-TUC) is a modular rotor test bench developed for controlled aerodynamic and acoustic characterization under simplified and well-defined conditions. The platform permits systematic variation of blade pitch and airfoil type and is intended to support the study of rotor aeroacoustic behavior in a more interpretable manner than is typically possible with conventional rotor geometries. This paper presents the commissioning and initial hover characterization of TUC-TUC in the A-Tunnel facility at TU Delft using integral load measurements, acoustic directivity measurements, and particle image velocimetry of the flow field. The measurements are complemented by performance estimates from a blade element momentum theory model coupled with a harmonic source formulation. The results show that the measured aerodynamic response is captured well in trend and magnitude by the performance model, despite an apparent pitch-angle offset between predictions and experiments. The acoustic measurements are likewise found to be broadly consistent with the intended design criteria, including expected velocity scaling and clear source separation between the outer test section and inner structure. Taken together, the results establish TUC-TUC as a suitable basis for continued aerodynamic and aeroacoustic characterization and for future study of rotor-noise mechanisms under controlled conditions.
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The TU Delft Characterization model for roTor aeroacoUstiCs (TUC-TUC) is a modular rotor test bench developed for controlled aerodynamic and acoustic characterization under simplified and well-defined conditions. The platform permits systematic variation of blade pitch and airfoil type and is intended to support the study of rotor aeroacoustic behavior in a more interpretable manner than is typically possible with conventional rotor geometries. This paper presents the commissioning and initial hover characterization of TUC-TUC in the A-Tunnel facility at TU Delft using integral load measurements, acoustic directivity measurements, and particle image velocimetry of the flow field. The measurements are complemented by performance estimates from a blade element momentum theory model coupled with a harmonic source formulation. The results show that the measured aerodynamic response is captured well in trend and magnitude by the performance model, despite an apparent pitch-angle offset between predictions and experiments. The acoustic measurements are likewise found to be broadly consistent with the intended design criteria, including expected velocity scaling and clear source separation between the outer test section and inner structure. Taken together, the results establish TUC-TUC as a suitable basis for continued aerodynamic and aeroacoustic characterization and for future study of rotor-noise mechanisms under controlled conditions.
TUC-TUC
Development of a test bench for the study of rotor aeroacoustics
This work describes the development of a test bench that allows for a complete assessment of the aerodynamic characteristics and the acoustic emissions of a rotor in flight-like operating conditions. The rotor is named TUC-TUC, after the TU delft Characterization model for roTor aeroacoUstiCs. Its design is driven by the ability of precisely control its configuration and load distribution while facilitating a holistic set of aeroacoustic measurement techniques to take place. The design rationale, technical developments, experimental plans, estimated performance and noise emissions are shown in this study.
...
This work describes the development of a test bench that allows for a complete assessment of the aerodynamic characteristics and the acoustic emissions of a rotor in flight-like operating conditions. The rotor is named TUC-TUC, after the TU delft Characterization model for roTor aeroacoUstiCs. Its design is driven by the ability of precisely control its configuration and load distribution while facilitating a holistic set of aeroacoustic measurement techniques to take place. The design rationale, technical developments, experimental plans, estimated performance and noise emissions are shown in this study.