Weapon Bay Cavity Noise Environments, Data Correlation and Prediction for the B-1 Aircraft.

Abstract

During development of the B-1 aircraft, an extensive cavity noise measurement and noise reduction program using wind tunnel models and evaluation on a flight-test aircraft was conducted. Substantial cavity noise reduction was achieved with retrofitted spoilers for a mach 0.6 to 1 range for the weapon bay cavity of L/D = 2.2. A substantial amount of cavity unsuppressed and suppressed data were acquired from wind tunnel models and the full-scale aircraft. Data for weapon bay cavities with internal stores and multiple open cavities was also obtained. The data acquired during development of B-1 cavity noise suppressors are correlated and compared with previously published data. The data are correlated with existing prediction techniques and modifications to the current prediction techniques, and guidelines are recommended. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1980
Accession Number
ADA089770

Entities

People

  • A. G. Tipton

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircraft Equipment
  • Boundary Layer
  • Flow
  • Free Stream
  • Geometry
  • Measurement
  • Numerical Analysis
  • Plastic Explosives
  • Pressure Distribution
  • Resonance
  • Resonant Frequency
  • Sound Pressure
  • Test And Evaluation
  • Turbulent Mixing
  • Vibration
  • Wind Tunnel Models

Readers

  • Aerodynamics/Aeronautics.
  • Approximation Theory.
  • Marine Propulsion Engineering and Naval Architecture