Prediction of sound exposure caused by a landing motor glider with recuperating propellers
- This paper presents an approach to predicting the sound exposure on the ground caused by a landing aircraft with recuperating propellers. The noise source along the trajectory of a flight specified for a steeper approach is simulated based on measurements of sound power levels and additional parameters of a single propeller placed in a wind tunnel. To validate the measured data/measurement results, these simulations are also supported by overflight measurements of a test aircraft. It is shown that the simple source models of propellers do not provide fully satisfactory results since the sound levels are estimated too low. Nevertheless, with a further reference comparison, margins for an acceptable increase in the sound power level of the aircraft on its now steeper approach path could be estimated. Thus, in this case, a +7 dB increase in SWL would not increase the SEL compared to the conventional approach within only 2 km ahead of the airfield.
| Author: | Sebastian Hille, Eike Stumpf, Joscha MayntzORCiD, Peter Dahmann |
|---|---|
| DOI: | https://doi.org/10.2514/6.2023-0211 |
| Parent Title (English): | AIAA SCITECH 2023 Forum |
| Publisher: | AIAA |
| Document Type: | Conference Proceeding |
| Language: | English |
| Year of Completion: | 2023 |
| Date of the Publication (Server): | 2023/03/07 |
| Note: | AIAA SCITECH 2023 Forum, 23-27 January 2023, National Harbor, MD & Online |
| Link: | https://doi.org/10.2514/6.2023-0211 |
| Zugriffsart: | bezahl |
| Institutes: | FH Aachen / Fachbereich Luft- und Raumfahrttechnik |
| collections: | Verlag / AIAA |
