H2020 ENODISE: DLR Analytical Aeroacoustic Database Configuration B1

This database contains the acoustic prediction results of DLR for a single operating point of the B1 configuration investigated in the framework of the European project ENODISE. In this configuration, three identical propellers with 6 blades are mounted at leading-edge of a wing (puller configuration). The results presented here can be compared to the measurements carried out by the Technical University of Delft, when these are available. The experimental results should be also saved on the ZENODO repository (use the key word ENODISE).

The investigated operating point as calculated in the prediction is:

• Uinf = 30 m/s, advance ratio J=0.8.

The DLR prediction results were obtained using the analytical approach implemented in the DLR in-house program PropNoise coupled to the blade element momentum theory.

The interaction with the wing is accounted for in a simplistic way as explained in the detailed documentation B_documentation.pptx.

Only, the results for tonal noise are available in this database. Three cases can be investigated separately: a single isolated propeller, 3 distributed propellers, three distributed propellers interacting with the wing.

The DLR results are saved in h5 files, which can be read with e.g. Python.