Longitudinal Vibrations of Rockets with Liquid Fuel Engines

Abstract

In the report vibrations in the powered-flight phase of a liquid fuel rocket are examined as a closed mechanical-hydraulic system consisting of the elastic body of the rocket with liquid fuel in tanks, fuel lines, and liquid rocket engine. The dynamic characteristics of each of these elements of the system are examined. Methods of calculating the form and frequencies of inherent longitudinal vibrations of the body of the rocket are presented, taking into account the axi symmetrical vibrations of the elastic fuel tanks. The dynamic characteristics of the fuel lines are determined with a consideration of the local resistances and elastic properties of the turbo-drives and bellows, taking into account the compressibility and cavitation of the liquid fuel entering the centrifugal pumps. The low-frequency dynamic characteristics of the liquid propellant rocket engine are determined with closed and open feeding system.

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Document Details

Document Type
Technical Report
Publication Date
Jan 04, 1972
Accession Number
AD0756076

Entities

People

  • K. S. Kolesnikov

Organizations

  • Air Force Systems Command

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Combustion
  • Combustion Chambers
  • Combustion Products
  • Computational Fluid Dynamics
  • Computational Science
  • Control Systems
  • Differential Equations
  • Elastic Properties
  • Hydraulic Accumulators
  • Liquid Propellant Rocket Engines
  • Liquid Propellants
  • Mechanics
  • Modulus Of Elasticity
  • Pressure Distribution
  • Pressure Regulators
  • Rocket Engines
  • Standing Waves

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Petroleum Engineering
  • Rocket Propulsion.