FLUTTER TEST OF AN ARRAY OF FULL-SCALE PANELS FROM THE SATURN S-IVB STAGE AT TRANSONIC MACH NUMBERS

Abstract

Flutter characteristics of a 30-deg segment of the full-scale Saturn S-IVB stage were obtained at Mach numbers from 1.30 to 1.60 for various combinations of axial-compressive loads and panel differential pressures. Flutter was encountered in one or more panels when sufficient axial load was applied to either partially or completely buckle the panels. The flutter was amplitude limited, and no structural failures occurred on any of the panels as a result of flutter. However, the test had to be terminated when two panels in the fifth bay were statically buckled beyond their elastic limit and permanent deformation resulted. A calibration test was conducted prior to the flutter test to determine the optimum design of the fixture used to support the model. Also static-pressure and boundary-layer surveys were made on the model at tunnel conditions comparable to those of the flutter phase.

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Document Details

Document Type
Technical Report
Publication Date
Jan 02, 1968
Accession Number
AD0827913

Entities

People

  • T. M. Perkins

Organizations

  • Arnold Engineering Development Complex

Tags

DTIC Thesaurus Topics

  • Air Force
  • Axial Loads
  • Boundaries
  • Boundary Layer
  • Calibration
  • Dynamic Pressure
  • Export Controls
  • Exports
  • Free Stream
  • Governments
  • Instrumentation
  • Mach Number
  • Measurement
  • Pressure Distribution
  • Static Pressure
  • Strain Gages
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Software Engineering
  • Structural Dynamics.