CH-53 Gun Mount Adapter

Abstract

Lockheed Martin AeroParts, Inc. (LMAPI), Johnstown, Pennsylvania, produces gun turret components for military helicopters, including the Sikorsky CH-53. Machining the 12-inch x 18-inch x 4-inch diamond-shaped aluminum gun mount adapter is challenging because of the intricate ISO grid pattern designed to reduce weight and provide strength. Machining the ISO grid requires the use of high-speed machining techniques. Lockheed Martin has implemented the use of z-axis milling techniques for roughing the component, but sought the help of the National Center for Defense Manufacturing and Machining (NCDMM) to reduce machining time and optimize the finish milling operations, which include an M60 x 1.5 mm 4-inch-deep threaded hole in the component, which currently takes 1.5 hours to complete using a single point-threading tool.

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Document Details

Document Type
Technical Report
Publication Date
Sep 20, 2004
Accession Number
ADA481852

Entities

Organizations

  • National Center for Defense Manufacturing and Machining

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aluminum
  • Elements
  • Gun Mounts
  • Gun Turrets
  • Guns
  • Helicopters
  • Information Operations
  • Machining
  • Manufacturing
  • Modal Analysis
  • Mounts
  • Standards
  • Technology Transfer

Readers

  • Naval Engineering and Maritime Security
  • Structural Health Monitoring of Composite Structures.
  • ballistics.