Larry Smith a écrit:


I'll give you another example --- Mike Arnold's 213 mph world
champion speedster, the AR-5. Do you believe that same airframe,
which is very light, btw, because of judicious (but not
vacuum-bagged) layups, could have
been made of aluminum? I don't. The AR-5 defeated the previous
world record-holder, which was an aluminum BD-5. Aluminum and
compound curves don't mix. Aluminum and laminar flow airfoils
don't mix either.
So I'd say that the composite aircraft 100 pounds heavier than the
RV-6 is faster on the same engine and prop combination. I may be
wrong. At least you can hide antennas inside the airframe.

Not taking anything away from 2024-T3, of course. Duralumin is
still a miracle material for aircraft construction. And, having
recorded the "From the Ground Up" series with Joe Schumacher and
Mark Annick, I'm envious of your RV-8 project.

I don't realy agree.... We kwon two airframe from same design:
The "Banbi" MC100, homebuilt from plans and the MCR01 kit (known as
Lafayette in USA).
The aluminium alloy homebuilt weight is 202kg, the carbon/epoxy kit
wieght is 232 all with Rotax 912 engine.
This plane is design by Michel Colomban, desinger of little twin
Cricri or Criquet. He designed bonded aluminium skin, realy good for
laminar flow and light weight and true homebuilt too.

By
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MinCab F-PRAZ
Philippe Vessaire Ò¿Ó¬