08-20009_SEMI-CHASSIS INTERFACE Package.pdf

This document is a technical drawing set for a Semi Truck/Chassis Interface component designated NBOC MLV, consisting of multiple detailed engineering drawings with specifications and assembly instructions.

The document comprises comprehensive mechanical drawings and specifications for manufacturing and assembly of the semi truck chassis interface. Key components include a base plate assembly, support gussets, cover plates, hydraulic brake bracket, brake linkage, welding pads, and clamp mounts for the NBOC MLV interface system. The drawings specify dimensions in both inches and millimeters, tolerance requirements per ASME standards, and detailed machining specifications. Material specifications include AS72 GR.50 steel for structural components and A572 GR.50 for the air-hydraulic brake linkage. Surface finishing requirements mandate degreasing per NASA-STD-SOOB, application of corrosion protective coatings including carboline primer and topcoat in specified colors, and stamping with lot and serial numbers. Welding must conform to AWS D1.1/D1.1M:2020 standards with inspection via visual examination and either magnetic particle testing or liquid penetrant testing. Assembly instructions detail specific torque values, clamp placements, and installation sequences, including removal of jacks after welding completion. The drawings are marked as approved and designated for the NASA Balloon Program, with export control restrictions noted per EAR regulations prohibiting sale or transfer to embargoed countries including Cuba, Sudan, North Korea, Iran, Syria, and Crimea. Document revision status indicates original release dated October 9, 2024, with multiple sheet references and cross-referenced drawing numbers throughout the set.