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Vibroacoustic Helicopter Impact on Elevated Helipad

Transactions on Aerospace Research
Volume 2023 (2023): Issue 1 (March 2023)
By:
Open Access
|Mar 2023

Figures & Tables

Figure 1.

EC-135 helicopter over the tested helipad.
EC-135 helicopter over the tested helipad.

Figure 2.

The building scheme and the location of measuring points.
The building scheme and the location of measuring points.

Figure 3.

Sound pressure level recorded during helicopter manoeuvres on the landing pad.
Sound pressure level recorded during helicopter manoeuvres on the landing pad.

Figure 4.

Sound pressure level recorded during helicopter manoeuvres indoors.
Sound pressure level recorded during helicopter manoeuvres indoors.

Figure 5.

Vibration acceleration during the helicopter manoeuvres: on the landing pad (blue curve); and indoors (green curve).
Vibration acceleration during the helicopter manoeuvres: on the landing pad (blue curve); and indoors (green curve).

Figure 6.

Amplitude-frequency characteristics of noise measured on the landing pad, corrected according to curve A.
Amplitude-frequency characteristics of noise measured on the landing pad, corrected according to curve A.

Figure 7.

Amplitude-frequency characteristics of noise measured indoors, corrected according to curve A.
Amplitude-frequency characteristics of noise measured indoors, corrected according to curve A.

Figure 8.

Amplitude-frequency graphs of the vibrations measured: on the landing pad (blue diagram); and indoors (green diagram).
Amplitude-frequency graphs of the vibrations measured: on the landing pad (blue diagram); and indoors (green diagram).

Figure 9.

Amplitude-frequency characteristics of the noise measured indoors (uncorrected).
Amplitude-frequency characteristics of the noise measured indoors (uncorrected).

Figure 10.

Amplitude-frequency characteristics of the noise measured on the landing pad (uncorrected).
Amplitude-frequency characteristics of the noise measured on the landing pad (uncorrected).

Figure 11.

Amplitude-frequency graphs of the measured vibrations (uncorrected).
Amplitude-frequency graphs of the measured vibrations (uncorrected).
DOI: https://doi.org/10.2478/tar-2023-0001 | Journal eISSN: 2545-2835
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Language: English
Page range: 1 - 9
Submitted on: Jun 14, 2022
Accepted on: Dec 12, 2022
Published on: Mar 17, 2023
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
mechanical engineering,
helipad,
helicopter,
noise,
vibrations,
impact
Related subjects:
Engineering,
Introductions and overviews,
Engineering, other,
Geosciences,
Geosciences, other,
Materials sciences,
Materials sciences, other,
Physics,
Physics, other

© 2023 Sławomir Cieślak, Wiesław Krzymień, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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