Project 043 Noise–Power–Distance Reevaluation

Details

• Alternative Title:
  ASCENT Project 43, Noise Power Distance Reevaluation Project Title
• Creators:
  Mavris, Dimitri N. ; Kirby, Michelle ; Rajaram, Dushhyanth ; Behere, Ameya
• Corporate Creators:
  Georgia Tech Research Corporation
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment ; United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy
• Subject/TRT Terms:
  • Aircraft noise
  • Evaluation and assessment
  • Noise
  • Noise sources
  • Civil aircraft
  • Quantitative metrics
  • ASCENT
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment
• Abstract:
  The standard technique for evaluating fleet noise is to estimate the flight procedure source noise by using noise–power–distance (NPD) curves. Noise calculations within the Aviation Environmental Design Tool (AEDT) rely on NPD curves provided by aircraft manufacturers. This dataset reflects representative aircraft categories at set power levels and aircraft configurations. Noise levels are obtained as a function of slant distance via spherical spreading through a standard atmosphere, and other correction factors are applied to obtain the desired sound field metrics at the location of the receiver. The current NPD model does not consider the aircraft configuration (e.g., flap settings) or alternative flight procedures being implemented. These factors are important, because the noise characteristics of an aircraft depend on the thrust, aircraft speed, and airframe configuration, among other contributing factors such as ambient conditions. The outcome of this research is an approach based on the suggested NPD+C format, which will enable more accurate noise predictions because of its inclusion of aircraft configuration and speed changes.
• Format:
  PDF
• Funding:
  13-C-AJFE-GIT-021
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89763/dot_89763_DS1.pdf
• File Type:
  [PDF - 561.27 KB]
• Collection(s):
  Federal Aviation Administration
• Main Document Checksum:
  urn:sha-512:b7a1f96f32209eaaa958ef5908a973dcdc2e26e4784f7b112e7173967c7c56ddda0a06f29ff9c2fba0501835c6e2f2596bcdfd4dc30de1f15f62d730a6e74cec