Aeroporti, impatto acustico/atmosferico e AEDT
Ma perché non è stato ancora adottato?
Il computer model per valutare l'impatto acustico in prossimità delle piste e di un aeroporto Integrated Noise Model (INM) è stato sostituto dalla FAA USA nel maggio 2015. Data nel quale è stato sostituito dall' Aviation Environmental Design Tool (AEDT).
Le Commissioni aeroportuali insediate negli scali della Penisola continuano, tuttavia, continuano a modellizzare l'impatto acustico l'INM. Non solo, anche i masterplan, le Valutazioni di Impatto Ambientale e le Valutazioni di Impatto Strategico stimano le ricadute acustiche di un aeroporto utilizzando, comunque, ancora INM (ovvero -the algorithm and framework from the SAE AIR 1845 standard, which used noise-power-distance (NPD) data to estimate noise accounting for specific operation mode, thrust setting, and source-receiver geometry, acoustic directivity, and other environmental factors).
Nonostante il corrente Aviation Environmental Design Tool (AEDT) sia in grado di modelizzare in contemporanea impatto acustico e atmosferico generato dalle flotte aeree la normativa italiana non è stata ancora adeguata alla strumentazione della FAA – USA.
“AEDT is a software system that dynamically models aircraft performance in space and time to produce fuel burn, emissions and noise. Full flight gate-to-gate analyses are possible for study sizes ranging from a single flight at an airport to scenarios at the regional, national, and global levels. AEDT is currently used by the U.S. government to consider the interdependencies between aircraft-related fuel burn, noise and emissions.
You can find information on obtaining AEDT as well as links to AEDT documentation and FAA guidance, on the official website for AEDT at https://aedt.faa.gov/.”
Numerosi aeroporti del Piano Nazionale Aeroporti che avevano elaborato le curve Lva con INM 10-15 anni addietro le hanno aggiornate ai volumi di traffico attuali (così come nei masterplan futuri) utilizzando lo stesso algoritmo INM.
L'interrogativo inevitabile e scontato è quindi il seguente: perché non è stato ancora adottato l'AEDT?
In attesa che ENAC attivi rapidamente il suo utilizzo aggiornando le mappe acustiche e atmosferiche di ogni pista di volo elenchiamo le performance dello stesso AEDT:
Environmental Modeling Methods
ATAC is a major player in the development of the FAA's environmental modeling software, Aviation Environmental Design Tool (AEDT), spanning local and global noise and emissions analyses. ATAC's FAA-funded research is improving the capabilities of AEDT, keeping it at the forefront of aviation environmental modeling methods and practices. ATAC develops and applies software tools and analysis methods to address environmental impact questions.
Such tools and methods include:
Modeling the noise and fuel-burn benefits of Continuous Descent Arrivals (CDAs) / Optimized Profile Descents (OPDs)
Animating aircraft flight trajectories and corresponding sound exposure or maximum sound level contours
Directly linking airport capacity modeling results with airport noise modeling inputs
Generation of number above contours
ATAC has applied its expertise to a variety of aviation environmental modeling tasks. These efforts include:
Environmental assessment for a simultaneous offset instrument approach and precision runway monitor project at San Francisco International Airport (SFO)
San Francisco International airfield development planning
Los Angeles International Airport south side airfield and New Large Aircraft (NLA) studies
Los Angeles International Airport analyses quantifying the environmental benefits of CDA implementation
Port of Oakland airfield and airspace modeling in support of SEIR
Alamogordo-White Sands regional airport environmental assessment
The studies performed by ATAC have addressed such issues as:
Airspace modifications
Number Above noise calculations to support sleep disturbance analyses
Runway and taxi-way reconfigurations, including single-event taxi operation noise analyses.