THE OPTIMAL ALIGNMENT OF MARINE SHAFTING

Alignment of marine shafting generally implies a judicious mis-alignment of the supporting bearings in order to achieve acceptable values of bearing reactions and shaft stresses. To achieve a true optimum it is necessary to describe quantitatively the desirable features of an alignment, and a combined technical/economic basis for this description is presented. The result is a well-defined problem that is solved by mathematical optimisation methods. Results of the procedure are illustrated by alignment plans derived for, and adopted by, ships recently built in the United States and abroad. The practical realization of an alignment plan is discussed and means of speeding up the implementation process are proposed. Improvements in the elastic representation of the shaft system are described and the question of hydrodynamic support in journal bearings is considered.

• Supplemental Notes:
  • Presented at the New England Section Meeting of SNAME.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Bradshaw, R T
• Publication Date: 1973-10

Media Info

• Features: References;
• Pagination: 41 p.

Subject/Index Terms

• TRT Terms: Alignment; Journal bearings; Propeller shafts; Stresses
• Old TRIS Terms: Bearing stresses; Propeller shaft alignment; Propeller shaft stresses
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00053908
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: May 7 1974 12:00AM