THE INFLUENCE OF PROPELLER MEAN LOADS ON PROPULSION SHAFT ALIGNMENT

Shafting alignment in the vertical and horizontal planes is known to be affected by the steady forces and moments generated by the propeller when it rotates. A review of the scant literature on this problem is presented. The origin of the propeller loads is than discussed and it is shown how they can be predictd on the basis of unsteady lifting surface theory. Calculations and some model measurements of steady lateral loads for eight shaft systems are then presented. The effect of each of the six load components on shaft alignment is discussed in some detail. Results are presented from a study based on mathematical optimisation techniques in which propeller loads were included systematically in the shaft alignment selection phase. Recommendations are given for needed research that should aid in avoiding alignment-related failures.

  • Supplemental Notes:
    • Presented at "Propellers '78" Symposium, Virginia Beach, Virginia, 24/25 May 1978.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  United States  07306-2907
  • Authors:
    • Vassilopoulos, L
  • Publication Date: 1978-5

Media Info

  • Features: References;
  • Pagination: 24 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00301348
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Report/Paper Numbers: Paper No. 17 Conf Paper
  • Files: TRIS
  • Created Date: Nov 27 1979 12:00AM