A Westinghouse model W-41, simple cycle gas turbine has been adapted for use with electric transmission aboard the Canadian Coast Guard icebreaker, Norman McLeod Rodgers. The prime concern in its design and development has been to satisfy the requirements of the marine environment and icebreaker application. Steel has replaced modular iron casting to improve shock and vibration resistance, air compressor blades have been coated with epom-phenolic baked enamel to resist corrosion, the oil reservoir has been fitted with baffles to resist roll and pitch, and the turbine air inlet is fitted with a compressor water wash and spent catalyst injection system for dissolving salts and cleaning. To save space, the propulsion generator also operates as a starting motor. In order to dissipate kinetic energy imparted to the propeller during maneuvers without overspeeding the turbine, compressed air is vented after compressor discharge and before combustion zones, thus preventing the increased air flow resulting from turbine acceleration from performing work. To ensure service reliability in starting, all six combustors have been fitted with spark igniters. Care has been taken in designing turbine air inlet ducting to prevent the formation of ice and or condensate. Silencing was given careful attention. Observations to date indicate excellent results with the high pressure blow-off system to prevent overspeeding.

  • Corporate Authors:

    National Institute of Shipbuilding and Shipping

    10 Burgemeester & Jacobplein
    Rotterdam,   Netherlands 
  • Authors:
    • McCullum, J B
  • Publication Date: 1971-12

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00032695
  • Record Type: Publication
  • Source Agency: United States Merchant Marine Academy
  • Files: TRIS
  • Created Date: Apr 21 1973 12:00AM