Aeroelastic Characteristics of a Cascade of Blades.

Abstract

A general aerodynamic theory and a numerical lifting surface technique based on velocity potential formulation for predicting aerodynamic derivatives of a cascade of blades in subsonic flow is described. The unsteady airload prediction method is applied for predicting the flutter boundaries of a single degree-of-freedom in torsion of a cascade of blades. Also, a general flutter program is developed for a two degree-of-freedom staggered cascade in subsonic flow. By utilizing an iterative procedure which permits frequency variation. The flutter frequency and the flutter speed of the reference airfoil are obtained as a function of cascade parameters. The computer program uses very efficient techniques in computing unsteady loads, the flutter frequency, and the flutter speeds. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1978
Accession Number
ADA055619

Entities

People

  • Balusu M. Rao
  • Louis Kronenberger Jr

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Velocity
  • Air Force
  • Compressible Flow
  • Computational Science
  • Computer Programs
  • Differential Equations
  • Equations
  • Equations Of Motion
  • Flow
  • Frequency
  • Lifting Surfaces
  • Mach Number
  • Molecular Dynamics
  • Partial Differential Equations
  • Resonant Frequency
  • Subsonic Flow
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.