EXPLORATORY STUDIES ON THE SUBLIMATION OF SLENDER CAMPHOR AND NAPHTHALENE MODELS IN A SUPERSONIC WIND-TUNNEL

Abstract

A summary is given of a systematic study of the sintering of powdered camphor and naphthalene after deaeration under vacuum. It is shown that models machined out of stock prepared in this way have a shear strength twice that of cast models, are completely homogeneous, and are well suited to wind-tunnel experiments on the aerodynamics of sublimating bodies. Exploratory tests on cones with flat and hemispherical noses and on several complex conical shapes featuring downstream and upstream facing steps, rectangular grooves, and shoulders are described. Emphasis is on the general evolution of their profiles, the sublimation history of the tips, and the occurrence of grooves, striations, and surface markings.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1968
Accession Number
AD0673531

Entities

People

  • A. F. Charwat

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ablation
  • Aerodynamic Characteristics
  • Boundary Layer
  • Chemistry
  • Geometry
  • Heat Energy
  • Heat Transfer
  • Layers
  • Mach Number
  • Materials
  • Materials Science
  • Mechanical Properties
  • Phase Diagrams
  • Physical Properties
  • Thermodynamics
  • Transitions
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Analytical Chemistry
  • Metallurgy

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flow