Moment Exerted on a Coning Projectile by a Spinning Liquid in a Spheroidal Cavity.

Abstract

The moment exerted by a low-viscosity spinning liquid in a coning cylindrical container has been well predicted by the classical Stewartson-Wedemeyer theory. This boundary layer theory is extended to the case of a completely filled spheroidal cavity, and liquid side moments are computed as functions of fineness ratio and Reynolds number. It is shown that only one eigenfrequency is important for this calculation, and for usual flight coning frequencies, large side moments can only occur for a fineness ratio between unity and 1.5. Keywords: Inviscid solutions; Orthogonality; Liquid moment; Liquid-filled projectiles; Spinning projectiles. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1986
Accession Number
ADA177642

Entities

People

  • Charles H. Murphy

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Containers
  • Fineness Ratio
  • Frequency
  • Layers
  • Liquid Filled Projectiles
  • Orthogonality
  • Projectiles
  • Reynolds Number
  • Viscosity

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Control Systems Engineering.
  • Structural Dynamics.