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 z 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

Dan Ruggirello wrote:

Pro/E will also do this.  It looks like you can buy the educational version
for $150 (https://www2.journeyed.com/cgi-bin/sgsh0101.exe) and you don't
have to be a student, just have to sign a license agreement that you won't
use it commercially.  Great program, but it can be difficult to install
since you need certain graphics drivers, file system etc.

Dan

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