Experimentation and Analysis to Perfect a Shock Perturbation Technique

Abstract

The overall design of a shock tube has been validated with an extraordinary level of performance. It has been demonstrated that shock Mach numbers up to M* = 12 can be predicted to better than + or - 2% (95% confidence limits) and that the purely aerodynamic losses account for about a 1% decrease in the observed shock Mach numbers relative to the ideal performance values. These results set quite a new level of control for large high performance shock tube installations. The mechanical design work with complete reliability is demonstrated after extensive de-bugging the combustion, control and test section. The diaphragm rupture and folding system also functions with complete reliability with respect to diaphragm tearing, etc., but a presently unresolved problem is a material failure which occurs after 15 to 20 shots.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1976
Accession Number
ADA025351

Entities

People

  • Hugh N. Powell

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Burning Rate
  • Chemical Reaction Properties
  • Combustion
  • Conductivity
  • Construction
  • Heat Transfer
  • High Temperature
  • Ignition
  • Mach Number
  • Materials
  • Materials Laboratories
  • Measurement
  • Military Research
  • Reliability
  • Shock Tubes
  • Thermal Conductivity
  • Thermophysical Properties

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Computational Fluid Dynamics (CFD)
  • Structural Health Monitoring of Composite Structures.