It still has a projected area you can use. Remember this is only going
to give you a ball park figure, there are many considerations to take
into account. For an aircraft you will most likely need to include
parasitic drag, deal with the full surface area of the wind sections to
develop the figure more accurately, surface finishes....etc etc. oh and
have one hell of a computer to do the calculations.
If you and your company want some help, I could go into this much much
further but the time involved will be too much to do over a news group
or via emails.
Here is my pride and joy of work in aerodynamics we have this recumbent
bike down to a min of drag the same effort that takes you to 15 KPH on a
mountain bike will get you to 52 KPH on this one...We hope to break a
world record in a month.
Also I have done extensive work on this aircrafts' aerodynamics and
structural analysis. and worked on some gliders in the Czech Republic
when I worked there.
You can contact me at
find the email and phone number in the contact link