Subject: Cosman Mark II
From: ACRE NL
Date: 7/4/2001, 4:21 PM


Chris,
What sort of plane is that  again please!?
George (down under)


It's a side by side, 2 seat, low wing, V tail, graphite fiber, speedster
built for really, really, big guys.  Should make the interior of a Lancair
IV look claustrophobic.  Smaller people will probably be able to make it
into a 4 + 1 seater.

You can see the photo history of it at
http://microcosman.com/aircraft/index.html
--
Chris
microcosman.com


Chris - "From a quick shot off a running horse", it loooks like, with the
narrow "V" in the tail, That you might be short on horizontal tail
volume coefficient. Most current thinking on "V" tails set the effective
area as being projected area, and thus would have the same frontal
and skin area as an equivalent conventional tail, for no gain.
Just a nit from the outlying fringes - looks like a neat project, and
the workmanship from the pictures appears to be outstanding.
Vance

You might have a bit less interference drag even though
the wetted area might be the same. There are only four
corners and not six.

BTW Vance do you have that flutter book I mentioned in regard to
the PFA flutter equation? If not I can come over tomorrow and bring it.
 
Paul Lamar
 
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