Bracket (0.04773 lb)

grabcad

The bracket has a mass of 0.04773 lb and a volume of 0.98602 cubic inches. Its maximum von Mises stress is 4,116 psi, and it meets the minimum edge distance requirements for Datum A and B surface areas. The bracket design uses a custom, ultra-low profile shoulder screw with no torque or tension preload required. All mounting bolts/screws are within the design envelope, accessible without any issues. The FEA constraints involve fixed hinge attachment to the Centaur Interstage Adapter, zero displacement in radial direction on cylindrical faces, and zero displacement on flat faces normal to the hole boss surface area. A 600 lbf load is applied uniformly on Datum B's surface area. The stress on the two lower mounting bosses is higher than the upper one, suggesting a potential bracket redesign without the upper mounting holes for weight reduction. This would decrease the mass to 0.04428 lb, volume to 0.91461 cubic inches, and max von Mises stress to 4,151 psi. Additionally, platform mounting holes are larger than bracket mounting holes, potentially allowing for Ultem 9085 screws with ACME thread to be used, each weighing 0.00202 lb.