Development of a High Temperature Single Impact Rain Erosion Test Capability

Abstract

A single impact rain erosion test capability has been developed to obtain data on fiber loaded Teflon (e.g. Duroid) ablative radome materials at temperatures up to their ablating temperature (approx. 1250 F). This effort was undertaken as a result of the prior inability to (1) obtain experimental data for single water droplet impacts on these materials at temperatures significantly above 400 F at velocities near Mach 5, and (2) identify a solid particle whose behavior is similar to or can be correlated to that of water droplets at all conditions of interest. This test capability allows one to dispense a stream of calibrated discrete water droplets in the path of aerodynamically heated samples on sleds at velocities up to 6000 ft/sec.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1984
Accession Number
ADP004371

Entities

People

  • K. N. Letson
  • S. P. Risner

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Heating
  • Dispensers
  • Engineering
  • Erosion
  • High Acceleration
  • High Temperature
  • Materials
  • Optical Materials
  • Particles
  • Propulsion Systems
  • Rain Erosion
  • Sleds
  • Temperature Gradients
  • Test And Evaluation
  • Test Vehicles
  • Vehicles
  • Visual Inspection

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.