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Noisy neighbours?
Noisy neighbours?
Airport expansion will deliver more noise and nuisance to your doorstep.
There will be more frequent flights by the big jet planes because they can carry more and so will be flying lower on take-off.
A big jet makes at least 63%* more noise on take off than the normal turboprop. Low-pitched noise will be even worse.
To enjoy where you live, most of your time will need to be spent indoors with windows closed.
“The Government supports...airspace modernisation which has the potential to deliver noise reduction through steeper departure angles.” [Aviation 2050]
“The Government supports...airspace modernisation which has the potential to deliver noise reduction through steeper departure angles.” [Aviation 2050]
Southampton airport wants to ignore Government advice by flying shallower departure angles over Marlhill Copse.
Leaflet on NOISE for neighbours of Marlhill Copse:
https://drive.google.com/file/d/1RiAbKwFdrg4poIAvEMLL1GdDNACxPm6w/view?usp=sharing [May 2019]
https://explane.org/ an app that measures aircraft noise and helps compile a database
[* http://www.airportwatch.org.uk/the-problems/#NATSnoisedata quotes figures provided by NATS. Table 1 lists the Airbus A320 and the Boeing 737 (the large jets that use Southampton airport) as "125-180 single aisle 2 engined jets".
Table 3 gives the departure decibel level for this jet group as 85 at 1000ft. The departure level for the turboprop is 78. The difference is 7 dB.
http://www.sengpielaudio.com/calculator-levelchange.htm explains the dB scale. An increase of 10 dB is twice the loudness. The graph shows roughly what a 7 dB difference is in loudness and the formula gives this as 1.63 (rounding upwards) i.e. 1.63 times as loud. This is 63% louder. ]
The World Health Organisation (WHO) recommends a maximum average level of aircraft noise (Lden) of 45 dB. Southampton airport is currently (2016) responsible for 5,600 local people being exposed to an average level of 55 dB (Lden). Airport expansion will make the health risks even greater for a larger number of people.
55 dB is twice as loud as 45 dB.
Environmental Statement Appendix 11.4 - Aircraft Noise Contours.pdfNoise contours: 2016; 2021 and 2037. The two 'cusps' at the south reflect two different flight paths. Generally, the western one relates to destinations/arrivals from the north and eastern one destinations/arrivals in Europe.
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