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  USA  91303

    Environmental Protection Agency

    Office of Noise Abatement and Control
    Washington, DC  USA  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

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