--> RV-List message posted by: "Frank van der Hulst (Staff WG)"

Hi,

Just a heads-up for anyone interested... the latest Sport Flying
magazine (published by NZ Sport Aviation Assn, our equivalent of EAA)
has an article on the Aero Sport International
http://www.aero-sport.com/Products/Index.asp Kahu gyroplane, which is
designed round a 13B engine, converted for aeronautical use.

The exhaust system might be of interest to RV-list members with (or
planning) 13B rotary engine installations. The article claimed that
switching to this exhaust had reduced noise from 101dB down to 79-81dB.
In the photo, the exhaust looked to be a cylinder about 8" in diameter
by maybe 12" long, with a helical pipe, about 2" in diameter, going
around and in and out of the cylinder. The text said the exhaust design
was based on some Russian research. If anyone's interested in more
information, I can ask for permission to scan the article and photos.

Frank
Learn real skills for the real world - Apply online
at http://www.ucol.ac.nz or call 0800 GO UCOL
(0800 46 8265) or txt free 3388 for more information
and make a good move to UCOL  Universal College of
Learning.

Enrol with a public institute and be certain of your
future


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