HYDRODYNAMICS OF SCREW PROPELLERS BASED ON A NEW LIFTING SURFACE THEORY

Observation of the vortices from the tip of a wing with low aspect ratio has lead to a new lifting surface theory. This theory proposes that the bound vortices replacing the wing are not distributed over the projected surface onto the stream as in Prandtl's theory, but over the wing surface itself inclined to the stream, whereas the free vortices trail along the locus of the moving wing. The application of this theory to the marine propeller is discussed. A two dimensional integral equation for determination of the circulation on the blade is presented. Numerical solution is done by computer. Then the results are compared with the results from conventional theories.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Sugai, K
• Publication Date: 1970

Media Info

• Features: References;
• Pagination: p. 96-106
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 4
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Performance; Propellers; Vehicle design
• Old TRIS Terms: Lifting surface theory; Propeller design; Propeller performance; Propeller theory
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00035130
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM