INCIPIENT- AND DEVELOPED-SPIN AND RECOVERY CHARACTERISTICS OF A MODERN HIGH-SPEED FIGHTER DESIGN WITH LOW ASPECT RATIO AS DETERMINED FROM DYNAMIC-MODEL TESTS

Abstract

Incipient- and developed-spin and recovery characteristics of a modern high-speed fighter design with low aspect ratio were investigated by dynamic model tests. A 1/7-scale rdiocontrolled model was tested by drop tests from a helicopter. Several 1/25-scale models with various configuration changes were tested in the Langley 20-foot free-spinning tunnel. Model results indicated that generally it would be difficult to obtain a developed spin with a corresponding airplane and that either the airplane would recover of its own accord from any poststall motion or the poststall motion could be readily terminated by proper control technique. On occasion, results indicated that if a poststall motion were allowed to continue, a fully developed spin might be obtainable from which recovery could range from rapid to no recovery. Satisfactory recoveries could be obtained with a proper-size tal parachute or strake, application of pitching-, rolling-, or yawing-moment rockets, or differential deflection of the horizontal tail.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0268342

Entities

People

  • Charles E. Libbey
  • Henry A. Lee

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aeronautics
  • Aircrafts
  • Airfoils
  • Airframes
  • Airplanes
  • Aspect Ratio
  • Center Of Gravity
  • Control Surfaces
  • Helicopters
  • Horizontal Stabilizers
  • Leading Edge Flaps
  • Leading Edges
  • Model Tests
  • Parachutes
  • Scale Models
  • Trailing Edges

Readers

  • Aerodynamics/Aeronautics.
  • Systems Analysis and Design