INVESTIGATION AND RECOVERY PROGRAM FOR NOZZLE PORT FLANGE SNAP RING GROOVE CRACKING PROBLEM OF THE MINUTEMAN STAGE III MOTOR. WEAPON SYSTEM 133A

Abstract

The results of the study included the following significant findings: (1) a complete documentation review of all manufacturing processes from the forging of the aluminum 2014-T652 billet through the final nozzle-port machining operation showed that: No failure correlation to specific forging heat lots existed; aluminum alloy met material property specifications; all nozzle-port flanges met drawing requirements; (2) metallurgical analyses of the hand-forged aluminum billets gave evidence of poor flow-line orientation throughout the billets that would accentuate failure conditions under improper loads; (3) a significant contour mismatch of 0.046 in. was measured between the flange and the aft-dome mold.

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Document Details

Document Type
Technical Report
Publication Date
Jun 20, 1966
Accession Number
AD0484720

Entities

People

  • W. L. Covington

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Aluminum Alloys
  • Contracts
  • Dielectrics
  • Fabrication
  • Machining
  • Manufacturing
  • Materials
  • Mercury Compounds
  • Physical Properties
  • Plastic Explosives
  • Specific Gravity
  • Specifications
  • Standards
  • Stress Corrosion
  • Structural Integrity
  • Test And Evaluation

Readers

  • Rocket Propulsion.
  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design