GYROSCOPIC EFFECT IN BALL BEARINGS OF FUZE ARMING VANE

Abstract

The rotating section of a fuze armed by a vane spinning in a windstream due to free fall was variously mounted with steel ball bearings, nylon ball bearings, and teflon O-rings. Wind tunnel tests were run and theoretical analyses made to determine the rise time and the steady state speed of the vane as a function of the air speed. An expression for the steady state velocity of the vane when mounted with ball bearings was developed which showed that gyroscopic action of the balls determined the maximum angular velocity of the vane; the theoretical results are in good agreement with experimental data.

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Document Details

Document Type
Technical Report
Publication Date
Jul 22, 1963
Accession Number
AD0419224

Entities

People

  • David L. Blanchard
  • Joanne E. Highdale

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Agreements
  • Air Flow
  • Angular Acceleration
  • Assembly
  • Axial Loads
  • Ball Bearings
  • Bearings
  • Equations
  • Friction
  • Munitions
  • O Rings
  • Ordnance Laboratories
  • Rings
  • Steady State
  • Test And Evaluation
  • Wind Tunnel Tests
  • Wind Tunnels

Readers

  • Fluid Dynamics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).