AN EXPERIMENTAL STUDY OF A SERIES OF FLAPPED RUDDERS

Water tunnel experiments were performed to determine the freestream characteristics of a series of twelve rudders with systematic variations in the amount of flap area and flap balance. The results include plots of lift, drag, rudder moment and flap moment coefficients for a complete range of angles of attack and flap deflections. A comparison is made of the effectiveness of all-movable rudders, rudders with a fixed skeg and movable flap, and rudders with movable skegs and flaps. Maximum flap moments with zero balance are compared to the maximum moment of a balanced all-movable rudder.

• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Ocean Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139
• Authors:
  • Kerwin, J E
  • Mandel, P
  • Lewis, S D
• Publication Date: 1971-7

Media Info

• Pagination: 49 p.

Subject/Index Terms

• TRT Terms: Maneuverability; Rudders; Torque
• Old TRIS Terms: Flapped rudders; Model testing
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00025714
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: 71-19 Final Tech
• Contract Numbers: N00014-67-A-204-0020
• Files: TRIS
• Created Date: Mar 28 1973 12:00AM