Jay Maynard wrote:
On 2008-07-07, wrote:
Re the Tango (composite) and RV (metal) an article in July Sport
Aviation (pg 54) addresses Drag Coefficient as a function of
construction process. The multiplier for the Drag Coefficient for
composite is 1.0-1.05 and for flush rivet metal is 1.10. Composite
can reduce drag then by 5 - 10% over a metal constructed aircraft.
Food for thought.

The flip side: what happens when it collects hangar rash? Repairing aluminum
is well known; repairing composites is not.


Exactly, which along with the health related issues associated with
building a composite aircraft is why any of us still work with aluminum.