EFFECTS OF VTOL AIRCRAFT NOISE ON VERTIPORT LOCATION

The location of vertiports close to city centers will depend upon the extent to which VTOL aircraft noise can be reduced. This reduction will be partially obtained by decreasing the noise generated by the aircraft and partially by specifying the flight path profile in the vicinity of the terminal. Incorporation of high bypass ratios, acoustic absorbtion duct liners, increased rotor-stator spacing and removal of inlet guide vanes is expected to reduce the noise level of a large jet lift transport by over three orders of magnitude. Similarly, rotor/prop VTOL aircraft can be significantly hushed by using low disk loadings; low tip speeds; and high blade speeds. Vertical climbs and descents and optimum climb and descent angles promise to further reduce the intrusion of aircraft noise on the lives of the cities' population. Although noise reduction will increase aircraft direct operating costs, this should be easily offset by additional revenue due to the increased volume of passengers attracted by a vertiport with an accessible downtown location. Boston is presented as an example of the limitations imposed on vertiport location by VTOL aircraft noise levels.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Aeronautics and Astronautics, 77 Massachusetts Avenue
    Cambridge, MA  United States  02139
  • Authors:
    • Lindley, J H
  • Publication Date: 1968-8

Subject/Index Terms

Filing Info

  • Accession Number: 00073384
  • Record Type: Publication
  • Source Agency: FLIGHT TRANSPORTATION LABORATORY, MIT DEPT. OF AERONAUTICS AND ASTRONAUTICS
  • Report/Paper Numbers: None
  • Files: TRIS
  • Created Date: Sep 5 1974 12:00AM