An Improved Test to Determine Rain-Erosion Resistance in Fuze Nose Cones

Abstract

This report proposes that rocket sled tests used in determining rain erosion resistance of fuze nose cones can be improved by specifying the aerodynamic heating that occurs on the nose cone before entering the artificial rainfield. This technique involves defining the velocity profile of the sled during the approach so that at the instant of entry into the rainfield, the velocity, surface temperature, and temperature gradient of the nose cone are as close as possible to the values that occur when the nose cone is mounted on an actual weapon and fired downrange toward a rainstorm. A computer program used to calculate temperatures within the nose-cone tip is presented in this report. Calculations used in preparing for rocket sled tests of the Short Intrusion Fuze (SIF) are presented as a sample problem.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1971
Accession Number
AD0729927

Entities

People

  • George K. Jr Lucey
  • Richard Ireland

Organizations

  • Harry Diamond Laboratories

Tags

DTIC Thesaurus Topics

  • Aerodynamic Heating
  • Computer Programs
  • Computers
  • Convection
  • Erosion Resistance
  • Heat Transfer
  • Heat Transfer Coefficients
  • Materials
  • Nose Cones
  • Numerical Analysis
  • Rocket Sleds
  • Sea Level
  • Sled Tests
  • Specific Heat
  • Surface Temperature
  • Temperature Gradients
  • Thermal Conductivity

Readers

  • Fluid Dynamics.
  • Surface Coatings Technology.
  • ballistics.