>One of my intentions for this project is to attempt some experiments in
>cockpit noise reduction (I know what ANR headsets can do - earplugs are
>actually better for certain
>frequencies!) My initial measurements of sound levels outside and inside
>the aircraft show a noticeable reduction vs. your typical Cessna
>150/172. I'd be interested to know if anyone else has experimented with
>noise reduction methods, including:
The best noise reduction often comes from a well balance prop and spinner.
The muffler is already better than most.
Unwise to add anything that seriously adds weight.
Graham
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