<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>A helicopter landing and taking off on an elevated helipad is a source of noise that affects the environment and causes vibrations of the landing pad or the building infrastructure. Vibrations are also excited by the air stream flowing through the main rotor and transferred to the landing pad by contact of the helicopter chassis. Vibrations are transferred to the building through the structure of the helipad. Depending on the damping properties of the structure and the vibro-isolating elements used, vibrations can be felt in rooms used by people and also transmitted to devices located in the building. The subject of the study described in this paper is the vibroacoustic effects of an EC-135 helicopter on an elevated landing pad during landing, standstill with the propulsion system engaged and take-off. Measurements of vibrations and noise were made at points located both on the landing pad and in the building. The paper presents selected results of measurements in various phases of flight and helicopter manoeuvres. The frequency analyses of the fragment of the measurement data for the flight phase, in which the highest levels of impact were recorded, were also performed and included. The results are presented as graphs and annotated.</p>
</abstract>

A helicopter landing and taking off on an elevated helipad is a source of noise that affects the environment and causes vibrations of the landing pad or the building infrastructure. Vibrations are also excited by the air stream flowing through the main rotor and transferred to the landing pad by contact of the helicopter chassis. Vibrations are transferred to the building through the structure of the helipad. Depending on the damping properties of the structure and the vibro-isolating elements used, vibrations can be felt in rooms used by people and also transmitted to devices located in the building. The subject of the study described in this paper is the vibroacoustic effects of an EC-135 helicopter on an elevated landing pad during landing, standstill with the propulsion system engaged and take-off. Measurements of vibrations and noise were made at points located both on the landing pad and in the building. The paper presents selected results of measurements in various phases of flight and helicopter manoeuvres. The frequency analyses of the fragment of the measurement data for the flight phase, in which the highest levels of impact were recorded, were also performed and included. The results are presented as graphs and annotated.

Vibroacoustic Helicopter Impact on Elevated Helipad

Transactions on Aerospace Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Vibroacoustic Helicopter Impact on Elevated Helipad"}

A helicopter landing and taking off on an elevated helipad is a source of noise that affects the environment and causes vibrations of the landing pad or the...

Vibroacoustic Helicopter Impact on Elevated Helipad

Online veröffentlicht: 17. März 2023

Seitenbereich: 1 - 9

Eingereicht: 14. Juni 2022

Akzeptiert: 12. Dez. 2022

DOI: https://doi.org/10.2478/tar-2023-0001

Schlüsselwörter
mechanical engineering, helipad, helicopter, noise, vibrations, impact

© 2023 Sławomir Cieślak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Vibroacoustic Helicopter Impact on Elevated Helipad

Online veröffentlicht: 17. März 2023

Seitenbereich: 1 - 9

Eingereicht: 14. Juni 2022

Akzeptiert: 12. Dez. 2022

DOI: https://doi.org/10.2478/tar-2023-0001

Schlüsselwörtermechanical engineering, helipad, helicopter, noise, vibrations, impact

© 2023 Sławomir Cieślak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Schlüsselwörter
mechanical engineering, helipad, helicopter, noise, vibrations, impact