Limiting Amplitude Analysis.

Abstract

A research program has been conducted with the objective to develop, evaluate, and verify a model for predicting the limiting amplitude of acoustic oscillations in solid rocket motors. The mathematical model used was the nonlinear oscillator model. The results of these efforts follow: Theoretical results show nonlinear particle damping and coupling of acoustic energy between acoustic modes to be significant nonlinear damping mechanisms. Results of T-burner firings using propellant seeded with inert ZrO2 particles verified the particle damping theory in that behavior predicted by theory follows the experimental frequency and diameter dependence. Also, nonlinear analyses of T-burner data showed a definite distinction between the nonlinear combustion characteristics of two propellants (SAO-101 and A-13) in terms of the quadratic nonlinear coefficient. It was possible to qualitatively explain instability behavior of a series of test motor firings. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1973
Accession Number
AD0765626

Entities

People

  • Merrill W. Beckstead
  • Russell C. Jensen

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Amplitude
  • Coefficients
  • Combustion
  • Couplings
  • Crystal Lattice Vibrations
  • Diameters
  • Frequency
  • Mathematical Models
  • Models
  • Nonlinear Analysis
  • Oscillation
  • Oscillators
  • Particles
  • Propellants
  • Rocket Engines

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Calculus or Mathematical Analysis
  • Molecular Photonics/Laser Physics