Gary wrote:

Off of the subjects, but does anyone know of a Cad or
other software program which will do all of the Cg
calculations of a airframe? As I do not have the
airframe built,  I need to investigate the Storch
completely as to changes and then decide where the 20B
will reside.
Gary Courtney

Rhino will do all that for solids and surfaces. If everything is 
not joined or unioned together you will have to tabulate individual 
solids or surfaces (parts). Solid Works should do the same thing.

For example if you can "trim", "join" or "union" all the tubes 
in a space frame drawing of the fuse Rhino will calculate the 
volume of all the material used, the centroid and the radius of 
gyration  about the x,y and x axis for the entire fuse. In order 
for this to happen you must be very accurate in how you locate 
all the joints in the scale drawing.

If you can prove to them you are a student you can get a real 
good deal on Rhino 3.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.