Modular Ball and Helix Setback Mechanism.

Abstract

The design and performance of a ball and helix double intergrating acceleration mechanism is discussed. This device can be used to provide setback safety for projectile fuzing or mechanical and electrical functions in terradynamics penetration vehicles and long delay mine and bomb fuzes. Units were built and tested having a volume of 0.07 cubic inches, a scale factor of 14.4 to 1, a bias level of 500g's, and an operating threshold of 110 FPS velocity change and 4 inches displacement. Work under a prior contract is summarized, results of laboratory air gun and 81mm mortar field tests are given, and an advanced design is described. Mathematical analysis and correlation with experiments plus detail design drawings are presented in 2 appendices. It is concluded that the ball and helix mechanism is a feasible device and recommendations are made for a final phase of exploratory development. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1973
Accession Number
AD0769071

Entities

People

  • David L. Overman
  • Lowell K. Koeberle

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Guns
  • Bomb Fuzes
  • Bombs
  • Buildings And Structures
  • Computing-Related Activities
  • Contracts
  • Data Science
  • Displacement
  • Field Tests
  • Guns
  • Information Science
  • Interdisciplinary Science
  • Mathematical Analysis
  • Mathematics
  • Ordnance Laboratories
  • Projectiles
  • Statistical Analysis

Readers

  • Explosive Engineering.
  • Munitions and Ordnance Engineering
  • Software Engineering