- Tytuł:
- Vibroacoustic Helicopter Impact on Elevated Helipad
- Autorzy:
-
Cieślak, Sławomir
Krzymień, Wiesław - Powiązania:
- https://bibliotekanauki.pl/articles/36809460.pdf
- Data publikacji:
- 2023
- Wydawca:
- Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
- Tematy:
-
mechanical engineering
helipad
helicopter
noise
vibrations
impact - Opis:
- 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.
- Źródło:
-
Transactions on Aerospace Research; 2023, 1 (270); 1-9
0509-6669
2545-2835 - Pojawia się w:
- Transactions on Aerospace Research
- Dostawca treści:
- Biblioteka Nauki
Artykuł