IMMI Aircraft Noise

The noise level at a given receiver induced by starting and landing aircraft is a function not only of the general laws of noise propagation but also of the model of aircraft, e.g. its weight, size, motor, speed and so on. Furthermore, the starting or landing direction of the aircraft is of great importance.

IMMI, which is field proven by several hundred users worldwide, helps in managing this complex task by providing acoustics calculation algorithms implemented in a convenient and easy to use environment.

    General features

    Flight Tracks (FANOMOS) in IMMI

    Aircraft noise calculation methods:

    • International method: ECAC. CEAC. Doc. 29 3rd edition, CNOSSOS Adaption
    • European method: ECAC. CEAC Doc. 29 2nd edition
    • National German methods: AzB/AzB-D and DIN 45684-1
    • National Austrian method: ÖAL 24-1 and 2

    • Definition of landing and takeoff runways
    • Modelling of flight routes, helicopter routes and traffic circuits according to the DES system
    • Input of flight movements for day, evening and night
    • Emission data base included
    • Calculation of Lden, Lday, Levening, Lnight, Lday(16h), NAT, Nawr (study of DLR concerning awakening reaction)
    • Flight path width can be optionally displayed in the scheme
    • 2 wake-up reaction criteria according to Jansen and Griefahn
    • Import and evaluating radar data (FANOMOS)

    IMMI supports the standard data-acquisition system for airports and airfields, which significantly simplifies and speeds up data preparation and input, making simulation and frequent calculation of reception points with new input data extremely facile and fast!

    Link to Log-In area

    www.woelfel.de/login.html

    Your Personal Contacts

    Dipl.-Ing. (FH) Denise Müller
    +49 931 49708-505
    Dipl.-Ing. Janosch Blaul
    +49 931 49 708-235