Noise area reduced by more than 30% over the 747-400

 

 

 

By designing with noise reduction in mind, Boeing was able to reduce the 747-8 noise footprint around an airport by 30 per cent compared to today’s 747-400. The illustration above shows how this noise reduction can positively benefit Heathrow airport. In future the 747-8 Intercontinental, operating at Heathrow, will satisfy QC2 noise requirements for take-off and QC1 for landings. These achievements result from the application of the latest wing and propulsion system technology. The GEnx engines on the 747-8, combined with dual chevrons and integrated nacelle liners that were tested on the Boeing Quiet Technology Demonstrator II programme, allow the newest 747 to operate more quietly on take-off and landing as well as during normal flight. The redesigned flap system reduces airframe noise, making the aircraft even more quiet when landing.

Link to Future Heathrow: http://www.futureheathrow.org/