A passenger jet takes off from an airport near the Luxor Hotel in Las Vegas, Nevada. New bird-inspired technologies are helping engineers design quieter aircraft, according to a NASA acoustics expert.



It seems a day will soon come when one can hear no aircraft noise around an airport! NASA scientist hopes of making such aircrafts inspired by bird, which will glide off form the runway silently, just like a bird.



Bird-inspired technologies may be the key to dampening aircraft noise around airports, according to a NASA scientist. Dennis Huff, chief of the acoustics branch at the NASA Glenn Research Center in Cleveland, Ohio and his team has developed the chevron nozzle. It is a serrated nozzle that fits on the backside of jet engines.



Inspired by the sawtooth pattern of the wing-feathers of some birds — including owls, the design is modeled with the jagged edge mixing the airflow coming out of the jet engine in such a way that reduces turbulence - and less turbulence lead to produce less noise.



Via: National Geographic News