Application area

The HODI Superior® nozzle is extremely suitable in the following sectors:
•  inland shipping
•  fishery
•  tug and push boats
A nozzle produces the greatest gain in thrust at relatively low speeds.

Return
The HODI Superior® nozzle is characterised by its slender, cambered profile that makes no concessions to the system diameter (outside diameter nozzle). Advanced CFD-analyses (Computational Fluid Dynamics) of tens of profiles showed that a more slender profile with more curvature clearly improved the nozzle. Furthermore, calculations also showed that a larger discharge diameter would also improve efficiency.

The nozzle derives its high efficiency from an improved version of the existing nozzle, a circular wing around the propeller. The section profile of this wing generates a higher speed on the inside than on the outside of the nozzle and achieves its thrust through the pressure difference that this creates. Efficiency improvements in nozzle technology have up to now mainly been sought in increasing the system diameter with all the disadvantages that this entails, such as a correspondingly larger installation size.    

Practical experiences
In combination with a specially developed propeller, the new nozzle has been used successfully in both inland shipping and the fishing industry. Ships fitted with this new combination appear not only to have an increase in thrust, but are also free of unpleasant vibrations and disturbing noises.
In short: in practice HODI Superior® shows its strengths in more than one area!

Advantages
A propeller in combination with a nozzle gives considerable benefit in:
•  thrust
•  fuel savings
•  improved speed
•  reduced noise and vibration

Construction
Steel and stainless steel plates are used for the construction of the HODI Superior®. In the interior of the nozzle all of the components are fully continuously welded from both sides. This method guarantees the reliability and durability that is such a characteristic of Van Voorden’s products.

Specifications
The nozzles are designed and manufactured for propellers with a diameter of max. 4000 mm.