A STUDY OF SYSTEM COUPLED INSTABILITY ANALYSIS TECHNIQUES.

Abstract

Research is presented on the subject of coupled structural/propulsion system instability generally referred to as POGO. The prime objective of the study is to determine the feasibility of using small-scale test configurations to define the parameters critically affecting stability. Both the liquid system pogo experienced on Thor and Titan vehicles are discussed as well as the gas system pogo experienced on Atlas vehicles. Sub-scale test methods and configurations are presented with an analysis of physical generation of cavitation compliance in turbo-pumps. Preliminary test results indicate that inexpensive commercial turbo-pumps can be used effectively to study cavitation phenomenon in rocket-engine propulsion systems. System excitation by oscillation of the pump assembly is accompanied by a high noise content in the system response. A comparison with a piston pulser in the discharge line is considered. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1966
Accession Number
AD0478042

Entities

People

  • F. E. Bikle
  • J. B. Rohrs
  • L. E. Fidler

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Assembly
  • Cavitation
  • Demographic Cohorts
  • Engineering
  • Engines
  • Excitation
  • Instability
  • Mechanical Engineering
  • Oscillation
  • Propulsion Systems
  • Rocket Engines
  • Rockets
  • Test Methods

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Rocket Propulsion.