Page 18: of Marine News Magazine (October 2013)

TECH FILEThe Idea: Terry Smith and William Schultz, an aero- nautical engineer with lineage to the original Kort nozzle invention, were both dedicated to offering solutions to known critical vessel issues. SpeciÞ cally, they pinpointed shock mitigation, reduction of maintenance and replace- ment costs, prevention of needless tragic injuries and deaths, conservation of fuel for the shipping industry, protection of the environment and its living entities, im- proved habitability for personnel and most importantly, creation of a safer, more efÞ cient day on the water. Smith is currently extending the patent with recent design engi- neering for scaling up the technology for ship platforms, branded the Schultz Nozzle. Technology: The Multi-Nozzle Venturi System establishes a 4th axis (the W axis) that becomes the focal point for hull control by providing circular rudder control of all 3 axes (pitch, yaw and roll), fundamentally eliminating cavitation vibration and creating vessel stability. The multi-nozzle sys- tem consists of 3 integrated, hydro-foiled components: Hydrofoil conÞ guration BeneÞ t: The system design yields lineal feet of hydrofoils that are all paralleled to the prop shaft (W axis) providing directional thrust and side force. (the 19.5Ó Thrustor creates approximately 20 lineal feet.) The Patent: The Venturi Port function and its part in the Multi-Nozzle Venturi System is the basis for the pat- ent (granted 2010), and is the source of the ability to in- crease propeller performance at all speeds. The Venturi Port solves issues with ducted (single nozzle) propellers: vessel performance being restricted to lower speeds and increased propeller cavitation vibration from mild to se- vere. The Multi-Nozzle systems provide an effective pro- peller propulsion solution. The Venturi Port (VP) creates an injection of atmospheric pressure, Venturi Action (VA), and more water to the propulsion column formed by the nozzles. Smith has recently added new IP for scaling up the technology for ship platforms, branding it the Schul-tz Nozzle. The Multi-Nozzle Venturi System is branded Thrustor for smaller craft. Concept Proven: For over Þ ve years, the U.S. Navy has used the MPT nozzle in their HM14 (and now HM 15 for 2 years) craft. Both groups use MPTÕs 19.5Ó nozzle for their ß eets of 7m RHIB workboats. Under heavy tow, over ground speeds in 2+ sea states have doubled. U.S. Navy Chief Benjamin Moore (ret) reported, ÒThe deck runs quiet and the sea moves under the boat Ð does not slam into it.Ó He also provided annual reports describing how Thrustor solved their vital issues concerning speed, power, Re-Thinking Shroud Technology MPT?s prop shroud solves WBV and RS Issues and increases performance. Safety Ring:forward of propeller, reducing size of possible entry area into propeller, increasing structural integrity, with hydro-foiled struts and trusses for added deß ection & entry protection. Thrust Nozzle:actually shrouds the propeller itself. Exhaust Nozzle:positioned aft of the propeller, trailing by 3 inches.18 MNOctober 2013MN October2013 Layout 18-31.indd 18MN October2013 Layout 18-31.indd 189/30/2013 11:20:59 AM9/30/2013 11:20:59 AM