Conference_programme: 4.1 - Airport Noise
Lecture: SAFT –Simulation of Atmosphere and air traffic For a quieter environmenT
Author(s): Tengzelius Ulf, Grönstedt Tomas, Bahmani Fatemeh, Karasalo Iikka
Summary:
SAFT –Simulation of Atmosphere and air traffic For a quieter environmenT\nAircraft noise around airports are today usually estimated with methods and tools such as ECAC doc.29, INM or AEDT (U.S.). These so called integrated/immission-tools fulfils their primary purpose, quite well, namely the evaluation of noise patterns from air traffic over longer time-periods, typically a year. But they lack the ability to study single event noise histories in any detail. In order to master the more exact simulation of ground noise from single approach-landing and take-off, one need to bring in a simulation of the complete chain including: \n- General flight mission and trajectory including geographic area and airport\n- Engine and flight conditions (incl. configuration in procedural steps)\n- Establish moving, frequency dependent and directive sound sources (flow-, thermodynamic and environmental conditions together with static design data of the engine+airframe)\n- Sound propagation from individual sources to ground through a refractive and absorptive atmosphere, current or typical weather/profile situations, to microphones/receivers on a reflecting and topographic varying ground \nDevelopment of simulation tools similar to SAFT begun already in the 90-ies with ANOP at NASA (under further development). Linked with the increased awareness regarding aircraft noise and the development of more powerful computers and algorithms this kind of simulation tools seem to be a topic of high interest in Europe and elsewhere today.\nWe believe that the SAFT-code will be characterized by the multidisciplinary project team gathering experts in the fields of noise-propagation, general acoustics, gas-turbines/aircraft engines as well as cooperation with ATC-experts, an airline and pilots. \nSAFT is financed through CSA – Centre for Sustainable Aviation and is a cooperation between Chalmers and KTH. Moreover tight collaboration is practiced with CSA-sibling projects ULLA (validation measurements including FDR data) and Brantare (“steeper approaches” pilot operational behaviour during approach) \n
Corresponding author
Name: Mr Ulf Tengzelius
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: Sweden
