WIND TUNNEL INVESTIGATION OF THE FORCES AND MOMENTS ACTING ON A CRUCIFORM FINNED MODEL WITH FIXED AND FREELY SPINNING TAIL ASSEMBLIES AT A MACH NUMBER OF 2.0,

Abstract

Spinning cruciform finned models were tested to determine the normal force, pitching moment, side force and yawing moment characteristics at a Mach number of 2.0 and a free stream Reynolds number of 3.98 x 10 to the 6th power per foot. The models had fin cant angles of 0, 2 and 4 degrees. In addition the models with the 2 and 4 degree fin cant angles were constructed so that the fin assembly could rotate either with the body as a single unit or rotate freely with the body locked. The tests showed that for the spin rates developed during the test, the normal force and pitching moments for all models are independ ent of spin rate and fin cant angle. The yawing moment is reduced on the average by a factor of 0.76 if the fins are allowed to rotate freely while the body is held stationary. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1963
Accession Number
AD0410157

Entities

People

  • William E. Degrafft

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Supplies
  • Assembly
  • California
  • Mach Number
  • Magnus Effect
  • Maryland
  • Moment Of Inertia
  • Munitions
  • New York
  • Ordnance Laboratories
  • Steady State
  • Strain Gages
  • Tail Assemblies
  • United States
  • Virginia
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.