TORSIONAL-VIBRATION CONSIDERATIONS OF A TWIN-DIESEL, SINGLE CONTROLLABLE-PITCH PROPELLER VESSEL

The importance of torsional-vibration considerations in any Diesel-engine driven equipment is well known. In the case of two Diesel engines driving a single controllable-pitch propeller through a combining speed reduction gear, consideration must be given to different operating modes such as declutched and idling--one engine engaged--both engines engaged etc.; involves several torsional mass elastic systems and several modes of vibration to each system. This paper deals with the torsional considerations of the various modes of operation and elaborates on the advantages from a torsional standpoint of a controllable-pitch versus a fixed-pitch propeller. Also discussed is the importance of selecting the correct type of resilient coupling and the advantage of a non-linear over a linear coupling.

• Supplemental Notes:
  • Paper presented by the Philadelphia Section of SNAME, January 21, 1977.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Yang, RTM
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: 6 p.

Subject/Index Terms

• TRT Terms: Controllable pitch propellers; Couplers; Damping (Physics); Diesel engines; Machinery; Propellers; Propulsion; Torsion; Vibration
• Old TRIS Terms: Diesel propulsion; Fixed pitch propellers; Machinery vibration; Torsional vibration
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00172960
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Apr 12 1978 12:00AM