Research on Helicopter Rotor Noise.

Abstract

During the period of this contract, research was carried out on three main aspects of helicopter rotor noise. These were the prediction of broadband noise due to random loadings, high speed blade noise, and noise due to the acceleration of solid bodies. The noise due to the acceleration of solid bodies was investigated experimentally and compared to calculations based on Farassat's results. The final results show excellent agreement between theory and experiment and a paper has been submitted to the Journal of Sound and Vibration reporting this work.

Document Details

Document Type
Technical Report
Publication Date
Feb 10, 1975
Accession Number
ADA007261

Entities

People

  • A. R. George

Organizations

  • Sibley School of Mechanical and Aerospace Engineering

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Aircrafts
  • Airframes
  • Bodies
  • Broadband
  • Contracts
  • Helicopter Rotors
  • Helicopters
  • Motion
  • Rotary Wing Aircraft
  • Solid Bodies
  • Vehicles
  • Vibration

Readers

  • Acoustical Oceanography.
  • Aerodynamics.
  • Technical Research and Report Writing.