Products
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 aircraft type, e.g. weight, size, motor, speed and so on. For the receiver, the starting or landing direction of the aircraft also is of great importance.
IMMI helps in managing this complex task by providing acoustics calculation algorithms implemented in a convenient and easy-to-use environment field-proven by several hundred users worldwide.
Aircraft noise calculation methods: ECAC. CEAC Doc. 29 + national methods: ÖAL 24 (Austria), AzB/AzB-L (Germany), DIN 45684 (Germany)
General Features:
- Calculation of Lden and Lnight, and of Lday and Levening.
- Segmentation technique implemented.
- Recommended Austro-German emission data available
- Flight path width can be optionally displayed in the scheme.
- 2 wake-up reaction criteria according to Jansen and Griefahn
- ...
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 a snap!
For further information see 
Log-In area.
Noise emission database
IMMI comes with the Austro-German noise emission database, which is tightly integrated into the data-acquisition systems for airports. All data to define any of the following can be found in the Flight Handbook of the airport of interest:
- Landing runways,
- Takeoff runways, and
- Aircraft (both planes and helicopters if supported by the calculation method)
- ...
For further information see Log-In area.