Measured Damping of Shuttle Acoustic Test Structures,

Abstract

Damping measurements have been made on ten shuttle structural test specimens which were constructed for acoustic testing. These specimens include the cargo bay doors, the OMS/RCS pod, the wing leading edge section, the wing elevon section, the body flap, the tail section, three fuselage panels and one wing panel. The damping of each natural mode of vibration for each specimen is plotted versus the natural frequency. Statistical analysis, including the mean, standard deviation and probability density for the damping data is presented. The analysis demonstrates that the damping ratio decreases with increasing frequency and that the logarithm of the damping ratio has a normal distribution. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1984
Accession Number
ADP004709

Entities

People

  • C. E. Wallace
  • J. Joanides
  • M. Mielke

Organizations

  • Arizona State University

Tags

DTIC Thesaurus Topics

  • California
  • Data Science
  • Frequency
  • Frequency Shift
  • Fuselages
  • Information Science
  • Leading Edges
  • Mathematics
  • Measurement
  • Mechanical Waves
  • Motion
  • Normal Distribution
  • Probability
  • Resonant Frequency
  • Standards
  • Statistical Analysis
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Structural Dynamics.