Voith Schneider Propeller
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Voith Schneider Propeller Designer Manual For safer shipping worldwide – Propulsion systems and ship concepts from Voith Turbo Marine. Safety and precise maneuvering on the seas, lakes, rivers, waterways and harbors of the world is of maxi­ mum importance. Safe and ecofriendly drive systems are an essen­ tial prerequisite for this. For over 80 years, Voith has been designing systems that are safe for people and the environment: a unique propulsion system – the Voith Schneider Propeller, the Voith Radial Propeller, the Voith Turbo Fin and also worldwide proven ship concepts such as the Voith Water Tractor are proof of our comprehensive expertise in this branch of industry. And our customers benefit from the lowmaintenance and operationally safe systems, which guarantee a high level of availability and outstan­ ing d quality.

Voith Schneider Propeller Voith Turbo Schneider Propulsion provides customized propulsion systems for the full range of applications from harbor and escort duties, through to ferries, military appli­ ations and special ships. c Built in Voith Schneider Propeller Voith Water Tractor “Baut”, Norway Double-ended ferry “Rheintal”, Germany The Voith Schneider Propeller (VSP) delivers thrust in all directions. It is a fast, continuously variable and precise vessel propulsion system combining propulsion and steering in a single unit. VSPequipped vessels do not require rudders. Thrust and steering...

Propeller Well The propeller well, which acts as the foundation of the Voith Schneider Propeller, consists of a cylindrical shell with a flange at the top. The propeller well must form an integral part of the bottom structure of the vessel so that, in addition to the propeller‘s weight, the forces and torque resulting from the propeller thrust can be transmitted into the ship‘s hull. This propeller thrust can vary by a full 360°. Propeller foundation Final machining of the flange The sealing surface of the flange should be machined on board but this should be done only after in­­ stal­­...

Propeller Installation To simplify transport, Voith Schneider Propellers above size 26 are supplied to the shipyard with the propeller blades removed. Blade installation is supervised by a Voith technician and can be carried out either prior to or following propeller installation to the vessel. Blade installation Propeller well During propeller installation, the Voith Schneider Propeller is first lowered onto the ready machined foundation. Alignment of the entire propulsion system is carried out in the following sequence: 1. Voith Schneider Propeller 2. Propulsion engine 3. Shaft line...

Voith Schneider Propeller installation Built in Voith Schneider Propeller Propellers located below the design waterline are equipped with an ele­ ated oil tank. This allows v the static oil pressure in the rotor casing to be increased to prevent water ingress into the propeller even when it is at a standstill. The eleva­ ted oil tank is part of the Voith scope of supply and should be mounted midships in the propeller area at a transverse bulkhead approx. 0.5 to 2 m above the design waterline. The propeller must be filled with oil before the vessel is launched. Voith Schneider Propellers are...

Propulsion Systems Interaction of Motor and Propeller The direction of the Voith Schneider Propeller‘s motor does not need to be reversed and the propeller can be operated at a constant speed. Thanks to its variable pitch characteristic, the propeller thrust is variable in direction and magnitude. The propulsion motor is speed-controlled for economically efficient partial-load operation. Engine curve Propeller curve for free running (100% pitch) Engine power [%] Diesel engine and Voith Schneider Propeller VSP power intake regulated by motor speed, at constant pitch Diesel engine propulsion...

at standstill during free running VSP power input over pitch at constant speed Electric propulsion Under defined partial load conditions, VSP power input at maxi­ um m pitch is controlled via the engine speed (e.g. varying speed settings for free-frunning vessels). The maxi­ um power output of the main m engine is measured during free running with a pitch setting of 100% and at a pitch setting of approx. 80% at bollard pull conditions. Electric VSP propulsion is used when large amounts of electrical energy are required for other onboard equipment such as on floating cranes or ferries. As...

Shaft Line Type DTL turbo coupling Type DTL turbo coupling with constant oil filling The shaft line for transmitting the motor output to the Voith Schneider Propeller normally consists of a Voith turbo coupling and a dis­ placeable curved teeth coupling with an intermediate shaft. The use of a hydrodynamic coupling guarantees smooth starting and stopping of the whole propulsion system. Moreover, the turbo coupling divides the entire vibration system into a primary and secondary side, whereby all the oscillatory pulses from the main motor are extensively dampened in the coupling and almost...

Type TM1 VTK turbo coupling with constant oil filling For most applications turbo couplings with constant oil filling can be used. These are virtually wear-free and therefore require little maintenance. In the majority of cases we supply turbo couplings with constant oil filling for direct installation onto the engine. The engine manufacturer must determine whether the engine can withstand the load reaction on the turbo coupling input side. If this is not the case, turbo couplings with pedestal bearings at the input and output side can be supplied. Double-ended ferry “Sahilbent”, Turkey In...

Fire-fighting boat for Los Angeles, USA Buoy laying vessel “Chef de Caux”, France Provision of fire-fighting capacity Today, increasing the fire fighting capacity of ships is becoming increasingly important in modern harbors. For the provision of higher fire-fighting capacities, powerful motors are needed which are operated only rarely. As a result, the cost of maintenance increases. When the VSP with a variable pitch characteristics is used, it is possible to connect firefighting pumps to the main engine via a power take-off (PTO). Additional motors for firefighting pumps are not...