On Tue, 25 Sep 2007 21:17:19 -0700, Le Chaud Lapin wrote in
om:

I have never really used a CAD program to design anything. I toyed
with AutoCAD back in 1987 but nothing more.

I'd like to design a small model aircraft, about one meter in length.
Even though it's small, it's still complex. There are many mechanical
pieces.

RCCad? It's 3-D.

http://www.rccad.com/

The most important feature I need, by far, is interdependencies of
paramters. [There is probably a fancy name for this]. In other words,
if I change an artifact of the aircraft from one material to the
other, I would like the change to manifest in every aspect of the
aircraft that depends on the material. I guess this is standard
feature. I would like to be able to program interelationships also,
preferrably in C++, but a scripting language will do.

I don't know whether it supports scripts.

The other important feature is that I need the tool to be "3D-aware"
from the outset. I'm hearing others in rec.aviation.piloting that
AutoCAD is not entirely 3D-aware. I don't know what that means, and I
am definitely not interested in finding out by trial and error.

A design program from a different standpoint:

http://www.davincitechnologies.com/AirplanePDQ.htm

It is CAD. I don't know whether it does 3-D.

Marty
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