... As the bevel gear is the size-determining key element within the upper and lower gearboxes of an azimuth thruster, there is a significant trickle effect onto many downstream features of the overall system. As part of its research programme, SCHOTTEL has developed a unique and major improvement...

..., that forward-skew reduces the lift/incidence slope at the outer radii while the common back-skew increases it. Forward-skew has by now been applied with good results to axial propeller-type and mixed-flow pump impellers, an advanced water jet's impeller and several ducted thrusters. Finally, it has been...

...An Environmentally Preferable Lubricant for Tunnel and Azimuth Thrusters Hiroyuki Sada1, Seiji Yamajo1 and David W. Hawkins2 1: Kobelco Eagle Marine Engineering Co. Ltd., Takasago, Japan 2: Kobelco Eagle Marine Inc., New York, NY ABSTRACT Ocean-going vessels use oil lubrication in the tunnel...

...Design optimisation of a bi-directional integrated thruster Pashias C, Turnock S.R., Abu Sharkb SM. University of Southampton, UK Integrated thruster model ABSTRACT The majority of thrusters usedfor the position control of tethered underwater vehicles have asymmetric propulsion characteristics...

...TIP-DRIVEN MARINE PROPELLERS AND IMPELLERS - A NOVEL PROPULSION CONCEPT - Dejan Radojcic', (M) ABSTRACT Contemporary propulsors in tubes (waterjels, nozzles, side thrusters) are relatively cumbersome and definitely stem from simpler unshrouded installations. For shrouded installations tip-driving...