SYSTEM COUPLED DYNAMIC INSTABILITY AMPLITUDE LIMITING ANALYSIS AND EVALUATION

Abstract

This report is concerned with the study of instabilities, generally referred to as POGO, resulting from coupling between liquid-fueled propulsion systems and structural dynamics. The report deals specifically with analysis of active and passive methods of stability compensation, methods of predicting POGO limit cycle amplitudes, and statistical methods of evaluating POGO stability margins. In addition, experimental studies were conducted to evaluate certain passive compensation methods. Specifically, sealed bag accumulator, gas injection, and cavitating venturi concepts were studied.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1968
Accession Number
AD0828705

Entities

People

  • Fred E. Bikle
  • Larry E. Fidler
  • Tom C. Hendricks

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Closed Loop Systems
  • Combustion Chambers
  • Computational Fluid Dynamics
  • Computational Science
  • Computer Programs
  • Computers
  • Control Systems
  • Differential Equations
  • Fluidic Amplifiers
  • Fluidic Devices
  • Fuels
  • Heat Energy
  • Mathematical Models
  • Monte Carlo Method
  • Propulsion Systems
  • Resonant Frequency

Readers

  • Combustion and Flow Dynamics.
  • Control Systems Engineering.