Research on the Flutter of Axial Turbomachine Blading.

Abstract

Typical aerodynamic moment and free flutter measurements are presented for negative stagger of thin airfoils in an annular cascade. The parameters of interest for the free flutter measurements are incidence angle, torsional amplitude, and reduced frequency (reduced velocity). For moment measurements, the significant parameters are mean incidence angle, interblade phase angle, and amplitude of oscillation. since measurements take the form of a continuous record of moment versus angular position, the symbolic name 'moment loops' is used. The characteristics of the experimental data are discussed and comparison is made with earlier test data for positive stagger angle with the same airfoil. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1979
Accession Number
ADA074597

Entities

People

  • Fernando Sisto
  • Mark Ward

Organizations

  • Stevens Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Air Force
  • Air Force Facilities
  • Angle Of Incidence
  • Engineering
  • Engineers
  • Experimental Data
  • Frequency
  • Libraries
  • Measurement
  • Mechanical Engineering
  • Military Research
  • Navy
  • New York
  • Strain Gages
  • Transducers
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Control Systems Engineering.