DUCTED PROPELLER INSTALLATION FOR THE SRN6 HOVERCRAFT

The cylindrical drum structure of the duct was designed in light alloy and the bell-mouth entry and downstream diffuser sections were molded from fiberglass. The problems of making such sections accurately were considerable, and hardwood plugs representing a third of the circumference were first made as the formers for the heavy fiberglass molds. To minimize dangers arising from propeller blade tip contact with the duct, the whole of the inner section of the structural box is covered with a layer of polyurethane foam faired into the leading and trailing edge moldings. The main purpose of this ducted propeller project is to secure a substantial reduction in noise.

• Supplemental Notes:
  • International Hovering Craft, Hydrofoil and Advanced Transit System Conference, Brighton, Sussex, England, May 13-16, 1974.
• Corporate Authors:

  Kalerghi Publications

  51 Welbeck Street
  London W1,   England 
• Authors:
  • Trillo, R L
  • Winter, P H
• Conference:
  • International Hovering Craft, Hydrofoil and Advanced Transit System Conference, Brighton, Sussex, England, May 13-16, 1974.
• Publication Date: 1974

Media Info

• Pagination: p. 317-323

Subject/Index Terms

• TRT Terms: Air cushion vehicles; Cavitation noise; Ducted propellers; Noise control; Propellers; Surface effect ships
• Uncontrolled Terms: Noise reduction
• Old TRIS Terms: Hovercraft propellers
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00135847
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Jul 13 1976 12:00AM