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Author

  • Joscha Mayntz (2)
  • Peter Dahmann (2)
  • Carsten Braun (1)
  • Eike Stumpf (1)
  • Felix Finger (1)
  • Hans Kemper (1)
  • Jörg Kreyer (1)
  • Michael Bragard (1)
  • O. Schmitz (1)
  • R. Khalsa (1)
  • Sebastian Hille (1)
  • Thomas Esch (1)

Year of publication

  • 2023 (1)
  • 2019 (1)

Institute

  • Fachbereich Luft- und Raumfahrttechnik (2)
  • Fachbereich Elektrotechnik und Informationstechnik (1)

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Prediction of sound exposure caused by a landing motor glider with recuperating propellers (2023)
Sebastian Hille ; Eike Stumpf ; Joscha Mayntz ; Peter Dahmann
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.
An Approach to Propulsion System Modelling for the Conceptual Design of Hybrid-Electric General Aviation Aircraft (2019)
Felix Finger ; R. Khalsa ; Jörg Kreyer ; Joscha Mayntz ; Carsten Braun ; Peter Dahmann ; Thomas Esch ; Hans Kemper ; O. Schmitz ; Michael Bragard
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