Getting to Grips with Aircraft Noise

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6 - EXAMPLES 6.2. FLEET CONTRIBUTION TO NOISE EXPOSURE In this example, we will work with a virtual airline operating from/to Charles-De-Gaulle airport with A340s and A320s. For a given daily flight operations scenario (to simplify, we will assume the same flights schedule whatever the day), we will compute values for different noise exposure indices. 6.2.1. DAILY OPERATIONS SCENARIO AIRCRAFT TIME ARRIVALS DEPARTURES Number Number QFU A320 A340 0700-1900 15 2 20 8 26R 26R A320 A340 1900-2200 0 0 8/20 8 26R/27L 27L A320 2200-0700 5 1 26R 6.2.2. COMPUTING NOISE EXPOSURE INDICES WITH NEX 1. Standard SIDs and approach procedures shall be assumed. The OFP software is used to simulate each flight operation and its associated parameters. 2. The NEX software is then used to program the flight operations scenario. The calculations are in this case performed in the background with NLC, the outputs of which are integrated over the applicable time frame for the retained index. 38 Flight Operations Support & Line Assistance Getting to grips with aircraft noise
Flight Operations Support & Line Assistance Getting to grips with aircraft noise 6 - EXAMPLES 3. It is then possible to draw iso-noise exposure index contours, or get the noise exposure index value at a precise location in the airport vicinity (for instance at a given noise monitoring station). 39
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Getting to Grips with Aircraft Noise

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