Assessment of community noise for a medium-range airplane with open-rotor engines

Autor:	B. S. Zamtfort, V. F. Kopiev, A. K. Travin, M. L. Shur, I. V. Belyaev, Yu. V. Medvedev
Rok vydání:	2017
Předmět:	business.product_category Acoustics and Ultrasonics Computer science Rotor (electric) Blade geometry Thrust 01 natural sciences Automotive engineering 010305 fluids & plasmas Turbofan Airplane law.invention Noise law 0103 physical sciences Airframe Aeroacoustics business 010301 acoustics
Zdroj:	Acoustical Physics. 63:723-730
ISSN:	1562-6865 1063-7710
DOI:	10.1134/s1063771017060069
Popis:	Community noise of a hypothetical medium-range airplane equipped with open-rotor engines is assessed by numerical modeling of the aeroacoustic characteristics of an isolated open rotor with the simplest blade geometry. Various open-rotor configurations are considered at constant thrust, and the lowest-noise configuration is selected. A two-engine medium-range airplane at known thrust of bypass turbofan engines at different segments of the takeoff–landing trajectory is considered, after the replacement of those engines by the open-rotor engines. It is established that a medium-range airplane with two open-rotor engines meets the requirements of Chapter 4 of the ICAO standard with a significant margin. It is shown that airframe noise makes a significant contribution to the total noise of an airplane with open-rotor engines at landing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98fcd87d731bb3961e8f8e0a41f5f09c https://doi.org/10.1134/s1063771017060069 Zobrazit plný text záznamu Plný text ve formátu PDF