727 NOISE RETROFIT FEASIBILITY. VOLUME II. UPPER GOAL DESIGN, FABRICATION, AND GROUND TESTING

The work performed in phase 2 of the contract was development, design, fabrication, and ground testing of a flightworthy quiet-nacelle configuration conforming to the FAA upper noise-reduction goals for the 727 airplane. The quiet-nacelle configuration tested consists of a double-ring, acoustically treated, side engine inlet; acoustically treated engine fan duct; and a multilobe, variable-geometry ejector/suppressor in the engine exhaust system. This quiet-nacelle configuration was ground tested to obtain comparative acoustic and performance data with the production-baseline nacelle. A direct operating cost (DOC) analysis was prepared based on preliminary retrofit installation cost estimates and predicted airplane performance analyses. In addition, a retrofit kit and installation package were developed to obtain realistic retrofit kit prices, installation costs, and maintenance costs to facilitate the final update of the direct operating cost analysis. (Author)

  • Supplemental Notes:
    • See also Volume 1, AD-756 040.
  • Corporate Authors:

    Boeing Company

    Commercial Airplane Division, P.O. Box 3707
    Seattle, WA  USA  98124
  • Authors:
    • Anderson, J R
    • Ridley, H G
    • Smith, J W
  • Publication Date: 1972-11

Media Info

  • Pagination: 116 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00047855
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: D6-60175 Final Rpt
  • Contract Numbers: DAT-FA71WA-2637
  • Files: NTIS
  • Created Date: Oct 18 1973 12:00AM