In recent years, several types of propellers with ducts of simplified profile have been systematically tested by the ship-model basin at Shanghai Jiao Tong University. The Authors present two series of these ducted propellers, together with detailed test results; the two series are JD75 + Ka4-70, which is suitable for steering-ducts, and JD7704 + Ka4-70, which gives good astern performance. In addition to the open-water characteristics of these two ducted propellers, the paper gives (Square root of B sub p) minus delta charts and charts corresponding to the optimum condition. These simplified-profile ducts, JD75 and JD7704, give a somewhat better propulsive performance than those developed in other countries. Furthermore, the open-water results with the JD7704 duct show that it is possible to develop a ducted propeller system with good performance both ahead and astern. Order from BSRA as No. 51,202.

  • Authors:
    • Kuo-chiang, W
    • Hoe-yuan, L
  • Publication Date: 1978-9


  • Chinese

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Filing Info

  • Accession Number: 00308386
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Mar 20 1980 12:00AM