"David Findlay" wrote in message
...
I'm in the early stages of the homebuilding disease :-P and still don't
know exactly what I want to build, just that I want to build something.
I'm interested to know what people have done in their aircraft to reduce
the interior noise level? Can such noise insulation be added to plan or
kit built aircraft without too much difficulty? Is it possible to reach
car or commercial airline jet noise levels in a homebuilt? Thanks,

David

There are plenty of ways to reduce noise in a homebuilt, but unless you're
willing to go to extreme lengths, you'll have a hard time getting a
homebuilt down to the levels you mention. The 4 stroke rotax engines are
relatively quiet, so a design using one of those would be a good starting
point. Beyond that, you'd need to add insulation and go to thicker glass to
make a noticable difference.

Noise cancelling headsets are the most cost and weight effective method to
reduce percieved noise.

KB