118 vs 135 degree drill bit
Standard drill bit angles are 118 degrees or 135 degrees: Important to design countersink holes to this angle so that manufacturers can use standard drills:
Standard drill bit angles are 118 degrees or 135 degrees: Important to design countersink holes to this angle so that manufacturers can use standard drills:
The Starret Drill chart is a good reference (on top of Machinery Handbook) to determine drill, thread, and tap sizes:
Prepping for Critical Design Review on Static Tests Provided Manufacturing Engineering support on build up on an Engineering Development Unit Prototype – provided guidance on assembly parts, processes, and test requirements
Learned something interesting about loading assumptions. Why for testing, we will only pull at a certain value, say NDD at 115% then back off vs. holding it for a long period of time. For aircraft loading and testing: “you’re not trying to show that you can hold the load and the part doesn’t yield. I … Read more
Visual Aid Instructions
Further progress on completion of test procedures and test plans
Test Procedure Test Plan Critical Design Review (CDR)
Visual Assembly Drawing for Flight and Test Assemblies