I've been looking for a CAD program for creating model plans. I
downloaded a few free ones to see which features I like and which ones I
don't like. I've noticed that circle, arc and ellipse are very common
features, but I haven't seen a program yet that will do the complex
curves required for drawing airfoils.

I downloaded the free version of RC CAD, but it looks more like a toy
than a drafting program. The help file says I can select different
airfoils with the full ($49.95) version, but you still can't make real
plans with it.

The reason I'm looking is so I can draw plans for some of my designs and
offer them to the public on my website. I want to make the drawings
detailed enough for a relative beginner to be able to build a decent
airplane from them. The first plane I'm trying to do is a 6 foot
wingspan bomber that is capable of carrying 7 aluminum cans or a couple
of rolls of toilet paper. So far I've drawn most of the structure in
the fuselage, but I just don't know how to draw the airfoil. Any
suggestions?

try putting in a little more downthrust.

hwoell

"Ever since he saw one for the first time in a
Sears catalog 30 years ago, Matt Kirsch has been
fascinated by remote-control model airplanes.

"But it wasn't until he got his first 'real job'
about 11 years ago that he was able to indulge
his interest.

"Kirsch...now has about 20 remote-control planes
and is the president of the 100-member
Radio Control Club of Rochester..."

Rochester Democrat and Chronicle article:
http://easyurl.net/RochesterRC