CALCULATION OF DAY-NIGHT LEVELS (LDN) RESULTING FROM CIVIL AIRCRAFT OPERATIONS

A method is described for calculating the values of day/night noise level (Ldn), at a point, due to aircraft operations from an airport. Two levels of sophistication are detailed; (1) at the basic level, such factors as type of takeoff and landing procedure are considered, but range and non-standard glide slopes are excluded, (2) the more detailed method takes account of the latter parameters. The procedure used is to locate the position of the point in question, relative to the runway and aircraft flight track. A series of charts give Ldn values for different types of aircraft in terms of the distance parameters. Adjustments are made to the single event noise levels to account for frequency of operations and the adjusted levels are added logarithmically to represent all of the classes of aircraft using the airport.

• Corporate Authors:

  Bolt, Beranek and Newman, Incorporated

  21120 Vanowen Street
  Canoga Park, CA  United States  91303

  Environmental Protection Agency

  Office of Noise Abatement and Control
  Washington, DC  United States  20460
• Authors:
  • BISHOP, D E
  • Hays, A P
  • Reddingius, N H
  • Seidman, H
• Publication Date: 1976-3

Media Info

• Pagination: 374 p.

Subject/Index Terms

• TRT Terms: Aircraft noise; Aircraft operations; Airplanes; Airport runways; Airports; Calculation; Charts; Civil aviation; Classification; Daily; Days; Estimating; Glide path systems; Handbooks; Landing; Night; Sound level; Takeoff; Turbofan engines
• Uncontrolled Terms: Computation; Intensity; Quantities
• Old TRIS Terms: Day night levels; Takeoff and landing
• Subject Areas: Aviation; Environment; Pavements; Terminals and Facilities;

Filing Info

• Accession Number: 00158721
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: BBN-3157 Final Rpt., EPA/550/9-77-450
• Contract Numbers: EPA-68-01-3218
• Files: TRIS
• Created Date: Aug 31 1978 12:00AM