Elementary Equations of Motion For Free Ascending Cylindrical Pontoons

Abstract

The following paragraphs present several elementary equations to describe the motion of a free ascending recovery system and attached object. The recovery system consists of a buoyancy pontoon and an instrument compartment. The buoyancy pontoon is a pressure balanced vertical cylinder with a negligible mass. The instrument compartment is located immediately below the pontoon and contains the necessary instrumentation, batteries, and gas generator equipment to operate the recovery system. The instrument compartment also contains sufficient buoyancy foam to make the entire recovery system neutrally buoyant. The recovery object geometry is unspecified but assumed to be hydro- dynamically stable with a maximum diameter of Do, and cross-sectional area of Ao.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1976
Accession Number
AD1074498

Entities

People

  • K. W. Tate

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Barometric Pressure
  • Buoyancy
  • Civil Engineering
  • Coefficients
  • Deep Depth
  • Depth
  • Diameters
  • Displacement
  • Drag
  • Equations
  • Equations Of Motion
  • Flow Fields
  • Instrumentation
  • Porpoises
  • Recovery
  • Skin Friction
  • Specific Gravity

Readers

  • Aerospace Test and Evaluation
  • Fluid Dynamics.
  • Naval Architecture and Marine Engineering.