AN EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF MACH NUMBER, STABILIZER DIHEDRAL, AND FIN TORSIONAL STIFFNESS ON THE TRANSONIC FLUTTER CHARACTERISTICS OF A TEE-TAIL

Abstract

A transonic flutter investigation was made of elastically and dynamically scaled models of the tee-tail of a patrol bomber. It was found that removal of the 15 degrees dihedral of the stabilizer used on the airplane raised the flutter boundary to higher dynamic pressures. The effect of Mach number on the flutter boundary was different for dihedral angles of 0 degrees and 15 degrees. The dynamic pressure at the flutter boundary increased approximately linearly with the torsional stiffness of the fin. Highspeed motion pictures indicated that the flutter mode consisted primarily of fin bending and fin torsion. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1961
Accession Number
AD0263795

Entities

People

  • Annie G. Fox
  • Norman S. Land

Organizations

  • Brown University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airplanes
  • Boundaries
  • Dihedral Angle
  • Dynamic Pressure
  • Mach Number
  • Motion Pictures
  • Patrol Aircraft
  • Stiffness
  • Vehicles

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Materials Science and Engineering.