08-20004_LAUNCH DECK Assembly Package.pdf

This document is a series of engineering drawings for the NASA Balloon Program that specify the design and manufacturing requirements for a Launch Deck cage assembly and related components used in balloon payload operations.

The drawings detail multiple integrated components including an upper cage bar launch deck (part 08-20004), a modified scissor lift launch deck (part 08-20004-200), and a mounting rail launch deck (part 08-20004-201). The upper cage bar assembly measures approximately 68 inches in length with usable length clevis pins and retaining ring grooves, and is specified to be finished in yellow per federal standards. The scissor lift table variant includes a double scissor lift mechanism with 16-inch low height and 95-inch raised height capacity of 6,000 pounds on a 48-by-72-inch table. The mounting rail component is fabricated from 3-by-1.5-by-0.31-inch wall C-channel material. All components require dimensional tolerancing per ASME standards, fastener clearance per ASME B18.2, burr and sharp edge removal to 0.005 to 0.010 inches maximum, and welding performed per AWS D1.1/D1.1M:2020 specifications with filler metals ER70S-6, ER70S-2, and E7018-1. Post-weld surface preparation includes rust and grease removal per NASA-STD-5008B with application of carboline primer, carboacrylic midcoat, and carboacrylic topcoat in black or yellow per NASA standards. All components must include high-character stamping with lot and serial numbers, visual and magnetic particle or liquid penetrant testing inspection, and assembly per manufacturer installation instructions ensuring flush alignment with the cage mid-rail.