Energy Dissipation of Liquids in Nutating Spherical Tanks Measured by a Forced Motion-Spin Table

Abstract

A specially constructed drive table is described that can spin and nutate scale-model propellant tanks. Results of typical tests are given in which the liquid resonant frequencies and liquid forces and moments are presented as a function of spin rate, nutation frequency, nutation cone angle, liquid filling level, and liquid viscosity. Also described is an empirical mechanical model composed of a pendulum, a rotor, and dashpots that simulate the liquid resonances (slosh and inertial waves) and the liquid forces and moments. The parameters of the model are determined from the propellant motions. Keywords: spherical tanks; prolate spinning aircraft.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 30, 1985
Accession Number
ADA161864

Entities

People

  • Franklin T. Dodge
  • Michael F. Zedd

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Angular Acceleration
  • Angular Motion
  • Boundaries
  • Coordinate Systems
  • Equations
  • Equations Of Motion
  • Flow
  • Instrumentation
  • Measurement
  • Moment Of Inertia
  • Propellant Tanks
  • Resonant Frequency
  • Rotation
  • Scale Models
  • Space Systems
  • Spacecraft
  • Waves

Readers

  • Control Systems Engineering.
  • Rocket Propulsion.
  • Structural Dynamics.