Vibroacoustic Helicopter Impact on Elevated Helipad

• Autorzy: Cieślak Sławomir , Krzymień Wiesław

Identyfikatory

DOI

10.2478/tar-2023-0001

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

mechanical engineering; helipad; helicopter; noise; vibrations; impact

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Transactions on Aerospace Research
• Rocznik: 2023
• Tom: Nr 1 (270)
• Strony: 1--9
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., wykr.

Twórcy

autor

Cieślak Sławomir

• Łukasiewicz Research Network - Institute of Aviation, Materials and Structures Research Center, al. Krakowska 110/114, 02-256 Warsaw, Poland

• https://orcid.org/0000-0003-0100-6837

autor

Krzymień Wiesław

• Łukasiewicz Research Network - Institute of Aviation, Materials and Structures Research Center, al. Krakowska 110/114, 02-256 Warsaw, Poland

• https://orcid.org/0000-0001-6758-2621

Bibliografia

• [1] Krzymień, W. “Notes on the tests and Vibration Properties of Hospital Elevated Helipad Structures.” Archives of Civil Engineering Vol. 67 No. 3 (2021): pp. 231-242.
• [2] Łusiak, T. and Grudzień, A. “Rotor Turbulence Influence on Helicopter Flights in High Urban Built-Up.” Advances in Science and Technology Research Journal Vol. 7 No. 17 (2013): pp. 47-50.
• [3] Ruchała, P. and Grabowska, K. “Problems of an Aerodynamic Interference between Helicopter Rotor Slipstream and an Elevated Heliport.” Journal of KONES Vol. 26 (2019): pp. 189-196
• [4] Stanisławski, J. “A Simulation Model for Computing the Loads Generated at Landing Site During Helicopter Take-Off or Landing Operation.” Transactions on Aerospace Research Vol. 2019 No. 2 (2019): pp. 59-75.
• [5] Chyla, A. and Bukała, M. “The Analysis of Hospital Helicopter Landing Sites Location in Terms of their Vibroacoustic Impact.” Transactions on Aerospace Research Vol. 2019 No. 3 (2019): pp. 43-56.
• [6] Höfle, R., Heim, M., and Wiederin, S. “Elastische Lager zur Effizienten Schwingungsminderung bei Schützenswerten Bauwerken.” Bauingenieur Vol. 89 (2014): pp. 389-393.
• [7] Krzymień, W. and Cieślak, S. “Initial Analysis of Helicopter Impact on Hospital Helipads.” Transactions on Aerospace Research Vol. 2019 No. 3 (2019): pp. 14-23.
• [8] Standard PN-B-02171. “Ocena wpływu drgań na ludzi w budynkach” (“Assessment of the impact of vibrations on people in buildings”) 2017.
• [9] Szeląg, A., Stypuła, K., and Kamiński, T. “Sound Radiation by Vibrating Building Partitions in Terms of Acceptable Vibration Values.” Acta Physica Polonica A Vol. 125 (2014): pp. 122-126.
• [10] Dziubiński, A. “CFD Analysis of Rotor Wake Influence on Rooftop Helipad Operations Safety.” Transactions of the Institute of Aviation Vol. 242 No. 1 (2016): pp. 7-22.
• [11] Krzymień, W. and Cieślak, S. “Investigation of the Vibration Properties of Concrete Elevated Hospital Helipads.” Vibrations in Physical Systems Vol. 31 No. 1 (2020): 1-10.
• [12] Krzymień, W., Szmidt, M., and Cieślak, S. “Vibration Properties of Steel Constructed Hospital Elevated Helipads.” Transactions on Aerospace Research, Vol. 2020 No. 3 (2020): pp. 11-20.
• [13] Nash, A. “Vibration Effects in Healthcare Facilities.” Acoustics’08 Paris, (2008): pp. 2891-2895. Available at http://www.conforg.fr/acoustics2008/cdrom/data/articles/002718.pdf
• [14] Wąchalski, K. “Assessment of the Current Construction Conditions for Elevated Helipad on Hospital Buildings in Poland.” Transactions on Aerospace Research Vol. 2016 No. 3 (2016): pp. 189-201.
• [15] Wesolowsky, M.J. and Swallow, J.C. “Floor Vibration Considerations for Sensitive Equipment in Hospital, Medical, Pharma and Laboratory Facilities.” Canadian Acoustical Association, Acoustics Week in Canada, Winnipeg (Manitoba), (2014).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).