The first fuselage prototype was designed using a 1”x1”x1/8” square beam profile as a placeholder. The new truss design uses a 1” x 0.065” circular beam profile which matches the profile of the 6061 T6 aluminum tubing we plan to use in the construction of the airplane. We settled on using circular tubing as square tubing made any tapered beams very difficult to attach. With this profile in place, we could start to get some initial weight estimates. While our current design is obviously lacking a lot of critical beams, gussets, and panels, Onshape estimates its weight at 29.3 pounds. We hope the final design can remain below 40 pounds.