helicopter noise reduction
Thread Starter
Joined: Sep 2007
Posts: 7
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From: CA
helicopter noise reduction
Does anyone know more about the silent hughes during the early 1970s?
A Darpa sponsored program to make the hughes 500 quieter.
How quiet was the helicopter?
5 bladed main rotor and 4 bladed tail rotor.
Was it quieter than the modern Notar or Eurocopter helicopter?
Does anybody have more information?
Where can I get a view of this machine?
thanks a lot
Joined: Nov 2004
Posts: 1,334
Likes: 0
From: Cambridgeshire, UK
Vert,
I recommend searching for "silent hughes" on PPRuNe Rotorheads. It is quite a resource:
http://www.pprune.org/forums/search....archid=1956521
It might lead you to this thread (RIP Lu):
http://www.pprune.org/forums/showthr...=hughes+silent
Out of interest, is this for a project?
I recommend searching for "silent hughes" on PPRuNe Rotorheads. It is quite a resource:
http://www.pprune.org/forums/search....archid=1956521
It might lead you to this thread (RIP Lu):
http://www.pprune.org/forums/showthr...=hughes+silent
Out of interest, is this for a project?
