The Porpoising Characteristics of a Planing Surface Representing the Forebody of a Flying Boat Hull

Abstract

Porpoising characteristics were observed on V-body fitted with tail surfaces for different combinations of load, speed, moment of inertia, location of pivot, elevator setting, and tail area. A critical trim was found which was unaltered by elevator setting or tail area. Critical trim was lowered by moving pivot either forward or down or increasing radius or gyration. Increase in mass and moment of inertia increased amplitude of oscillations. Complete results are tabulated and shown graphically.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1942
Accession Number
ADA800608

Entities

People

  • James M. Benson

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamic Forces
  • Aerodynamic Lift
  • Aeronautical Laboratories
  • Aeronautics
  • Aircrafts
  • Amplitude
  • Center Of Gravity
  • Fluid Dynamics
  • Flying Boats
  • High Angles
  • Low Angles
  • Mass
  • Moment Of Inertia
  • Oscillation
  • Planing Surfaces
  • Seaplanes

Readers

  • Logistics and Supply Chain Management.
  • Marine Hydrodynamics