Atch 2 - 77-1088.pdf

This document is an engineering drawing (Drawing #77-1088) for a burst diaphragm used in the Hypervelocity Wind Tunnel No. 9 at the Air Force Arnold Engineering Development Complex. The technical drawing provides detailed specifications for multiple variations of burst diaphragms, including precise dimensional measurements, material specifications, and tolerance requirements. The design includes different part numbers (77-1088-1 through 77-1088-13) with variations in pressure ratings, thickness, and material compositions, including Tantalum Alloy (Ta-10W), Columbium C-103, and associated engineering notes about fabrication and inspection requirements.

The drawing specifies technical parameters such as burst pressures ranging from 3.3 to 22 KSI, material thicknesses between 0.056 and 0.125 inches, and tolerances as tight as 0.007. Materials include Ta-10W (ASTM B708), Columbium C-103 (ASTM B654), and other specialized alloys designed for high-stress, high-temperature applications. The document is approved for public release and is part of a pre-solicitation package for procuring critical burst diaphragm components essential for hypersonic ground testing and computational fluid dynamics (CFD) simulation validation.