We might have in the future quieter skies.
" Our skies in 20 years' time could be a lot quieter, if research by engineers on "silent aircraft" really takes off.
Cambridge-MIT Institute (CMI) engineers have been working on new styles of planes that would be barely audible.
No increase in noise around airports is a key requirement for expansion plans, particuarly at Heathrow and Stansted.
Prof Ann Dowling, CMI's Silent Aircraft Initiative (SAI) leader, said it was vital to take a fresh look at aircraft design to achieve quiet skies.
"Our hope is to ensure noise is central in future designs, and to show in conceptual design what can be achieved if you give it really high
priority," she told BBC News Online. "
Excerpts taken from.
news.bbc.co.uk...