An elaborate description of propeller geometry is not required during propeller design and analysis, but it is an essential requirement during propeller manufacturing and propeller inspection. If the pattern for propeller casting is made by an experienced pattern maker, and if the propeller casting is machined manually by skilled machinists the deficiencies of propeller drawings do not become unbearably stifling. On the other hand, if numerically controlled machines are to be used for pattern making and machining of propeller castings, an impasse is reached because, unlike their human counterparts, numerically controlled machines can not function with hazy geometrical data. The manner in which propeller geometry is defined must be such that it assists the manufacturer in comparison of the evolving shape with the originally defined shape. This requires some understanding of the way in which propellers are manufactured and the manner in which the propeller geometry evolves. Comparison of shape is for the purpose of evaluation of shape. Thus the manner in which propeller geometry is defined and measured has an enormous bearing on the processes of quality control, and quality control considerations must, in turn, be reflected in the way in which propeller geometry is defined. The purpose of this paper is to look at the problem of propeller geometry definition from this perspective.

  • Supplemental Notes:
    • Paper presented on 23 April 1980 to the Chesapeake Section, SNAME.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  United States  07306-2907
  • Authors:
    • RAWAT, P
  • Publication Date: 1980

Media Info

  • Features: References;
  • Pagination: 41 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319096
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Oct 8 1980 12:00AM