NASA EAS SUPPORT

grabcad

This concept utilizes aluminum alloy plates joined by ABS hinges, which are bonded together without separate parts. The plates can be cut using laser, water, or machining methods and have some sides bent for reinforcement. Upon unfolding, the plates fit together while the hinges protrude to strengthen joints. For mounting, a 6-hole keyhole plate is required, which needs a hexagonal key to screw in place. The union screws include circlips to prevent separation, and attaching to the rack union is swift (only requiring 90º turn of levers on each 4 arms). When folded, dimensions are 21.2 inches x 9 inches x 3.66 inches, with a total weight of 7.28 lbs (3.3 kg). A STEP review file and new STEP in folded position were attached on 2016_09_04. The hinges are 3D printed for design freedom, reinforcement, manufacturability in space, and nut accommodation ease. Aluminum bent sheets are used due to their low cost, fast manufacture capabilities, complex form optimization, and easy edge smoothing. If bending causes issues with certification, thicker aluminum plates can be machined, although this is more expensive and increases manufacturing time. This process reduces the number of parts in the design and likely maintains weight assembly without significant increase in costs, considering shipping expenses to space.