Atch 3 - 80-1126.pdf

This document is an engineering drawing for a Burst Diaphragm (Drawing #80-1126) used in the Hypervelocity Wind Tunnel No. 9 at the Arnold Engineering Development Complex. The technical drawing specifies a detailed design for a stainless steel (Type 304 Annealed Plate, ASTM A666) diaphragm with precise dimensional specifications, including multiple configuration variations with different burst pressure tolerances ranging from 4 to 22 KSI. The drawing includes comprehensive notes for fabrication, requiring written material certification, and highlighting specific manufacturing requirements such as break sharp edges and no machining in certain areas.

The drawing provides technical specifications for multiple experimental and standard burst diaphragm configurations, with dimensions of approximately 4.000 x 4.000 inches and thickness variations between 0.059 and 0.191 inches. Detailed section views (Section A-A and X-X) illustrate the diaphragm's geometric profile, with cross-hatched areas indicating specific design features. The drawing is part of a Department of the Air Force contract opportunity for critical hypersonic wind tunnel testing components, where these diaphragms are consumable items used in aerodynamic test and evaluation operations.