Final report SAFT :Simulation of Atmosphere and air traffic for a more silenT environment
SAFT :Simulering av Atmosfär och Flygtrafik för en Tystare omvärld
SAFT is the acronym of the project outlined in this report as well as the computer code for aircraft environmental noise simulation developed within the project. The SAFT simulation platform covers several methods for aircraft noise mapping, from a so called integrated method, a standard ECAC Doc.29 implementation, over more advanced, and potentially more accurate simulation methods accounting for “real” atmosphere/sound propagation conditions as well as for directive and frequency dependent noise sources. Chalmers methods for aircraft modelling, propulsion performance and propulsion conceptual design are interfaced with SAFT allowing for research studying how new technology and design choices of aircraft and engines influence noise sources, and in its extension also predict noise contours for new technology. Chalmers tools also allows physics-based simulations of aircraft trajectories to be linked to SAFT and be used to study different inflight procedures and how these influence CO2 emissions and noise. This document has two main purposes, namely: 1. Present the outcome of work performed within the project SAFT and 2. Offer an introduction and overview for users and developers of the computer program SAFT. This last point, i.e. giving an overview for coming SAFT users and -developers, has been ruling in the organisation of the text, with the result of a main thread corresponding to the possible computational paths when running the SAFT-program. After a short background and intro, the reader gets a picture of the input needed by the different computational alternatives, some information about the methods themselves and then samples of output from different simulations or runs. In its current phase of development SAFT is aimed for noise mapping of single aircraft pass-by events and is run by interactive input for each case. Possible runs and studies cover: new approach routes for existing aircraft and standard procedures, new procedures and profiles, noise footprints from todays or not yet existing aircraft. The SAFT architecture and design is made with the intentions to establish a research tool that combines the features of: 1. State of the art scientific and technical level; 2. Easy to understand and use; 3. Usefulness – i.e. filling the gaps/shortcomings of today’s standard integrated methods such as offering the capabilities of producing ground noise patterns that better reflects a real air traffic and prevailing weather and its variation - could be for an existing traffic situation, runway use or for new runways, aircraft, procedures or flight route design;4. Flexibility in terms of integrating future updates such as new methods, algorithms as well as functionality.
- Record URL:
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Corporate Authors:
KTH Royal Institute of Technology, Sweden
Stockholm, Sweden SE-100 44 -
Authors:
- Åbom, Mats
- Tengzelius, Ulf
- Karasalo, Ilkka
- Grönstedt, Tomas
- Bahmani, Fatemeh
- Publication Date: 2019
Language
- English
Media Info
- Pagination: 93p
Subject/Index Terms
- TRT Terms: Air traffic; Noise; Noise control
- ITRD Terms: 777: Air traffic; 2492: Noise; 2491: Noise control
- Subject Areas: Aviation; Environment; I15: Environment;
Filing Info
- Accession Number: 01739105
- Record Type: Publication
- Source Agency: Swedish National Road and Transport Research Institute (VTI)
- Files: ITRD, VTI
- Created Date: May 14 2020 9:42AM