Naslov
Light Twin Piston Engine Aircraft Noise Analysis in an Unusual Attitude Flight

Autori
Majić-Zec, Diana ; Ivošević, Jurica ; Bucak, Tino

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 6th Congress of the Alps Adria Acoustics Association 2014 Graz / Graf, Franz - Graz : Austrian Acoustics Association, 2014

Skup
6th Congress of the Alps Adria Acoustics Association

Mjesto i datum
Graz, Austrija, 16.10.2014. - 17.10.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
aircraft; interior noise; unusual attitude flight; propeller loading noise

Sažetak
High levels of interior noise are commonly inherent to General Aviation aircraft. Two dominant sources of noise of a small piston engine aircraft are power plant (propeller and engine) and aerodynamics (airflow around the fuselage), which by air and through the structure penetrates the aircraft and generates field of annoying sound – interior or cabin noise. This study investigates interior noise of a light twin piston engine aircraft Piper PA-44 Seminole in non-standard aircraft attitude, also known as unusual attitude – or upset – flight (traverse, slip, asymmetric flight and slow flight with high angle of attack). The data collected, analyzed and presented in this paper show significant noise change in both the levels and spectra generally due to asymmetrical loading of the propeller blades during unusual attitude flight, compared to attitude in regular cruising flight.

Izvorni jezik
Engleski

Znanstvena područja
Tehnologija prometa i transport

POVEZANOST RADA