Low frequency noise around airports
VALLET ; BRUYERE
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
VALLET ; BRUYERE
Résumé / Abstract
Due to the technical evolution of aircraft engines and to choose frequency weighting common to all transport systems the dB(A) has begun to be used as the acoustical unit around airports; the PNdB isstill used for noise certification purpose. A study of noise measurements that was carried out around French Airports allows one to see some noticeable differences between acoustical levels, respectively expressed in dB(A) and dB(C). The difference varies between 4 dB for the landing of recent aircrafts to 14 dB at take-off for 50/70 seat propeller aircraft.
