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SUMMARY:The Physics of Airplane Noise - Ed Brambley
DTSTART:20090302T194500Z
DTEND:20090302T210000Z
UID:TALK17242@talks.cam.ac.uk
CONTACT:David Gordon
DESCRIPTION:Abstract:\nDespite much investment\, aircraft still look kind 
 of the same as they did 50 years ago.  Have they got any quieter\, and if 
 so\, why?  Did you know that the engineering department here in Cambridge 
 have recently designed a radically new "Silent Aircraft"\, designed to be 
 no louder than the background city noise outside the airport perimeter?\n\
 nIn this talk\, I hope to explain\, with the help of many sound effects an
 d movies\, how aircraft produce sound and what we are doing to reduce it. 
  We'll start by explaining roughly how different aircraft engines work\, a
 ll the way from a little light propeller plane to a huge 777 jet engine to
  NASA's hypersonic research engines.  Then we'll look at how we hear noise
 \, and some examples of aircraft making noise.  Finally\, we'll consider s
 ome current ideas on how to reduce noise\, from radically different aircra
 ft designs\, to different air traffic control procedures\, to clever tweak
 s to existing designs.\n\nIf there's time at the end\, I'll show you some 
 near misses from a\nplane-spotters paradise beach!
LOCATION:Nihon Room\, Pembroke College
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