One main disadvantage of the gas turbine for marine applications is that it is uni-directional, and therefore either a reversing gearbox or controllable pitch propeller must be used to move the vessel in the astern direction. However, work is presently underway to develop a heavy-duty reversible gas turbine, and a test unit is scheduled for operation in mid-1974. How the reversing process is achieved is described, and the unit will be capable of producing 40 percent of the maximum developed horsepower in the astern mode. The solid state analog and digital control system is described with relation to the three control modes in both the ahead and the astern directions. The estimated efficiency losses, bearing design, and power turbine blading configuration are all described, with testing results included.

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  • Corporate Authors:

    Benn Brothers Marine Publications Limited

    Lyon Tower, 125 High Street, Colliers Wood
    London SW19 2JN,   England 
  • Publication Date: 1973-11

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Filing Info

  • Accession Number: 00054166
  • Record Type: Publication
  • Source Agency: National Maritime Research Center, Kings Point
  • Files: TRIS
  • Created Date: May 7 1974 12:00AM