Community Research and Development Information Service - CORDIS

New generation bladeless marine propulsor

Contributed by: "CTC GROUP"Ltd

Bladeless impellers made of expanded metal mesh significantly reducing the viscosity of water instantly generates thrust. The unique propulsor may operate at 10000 RPM and higher without gear boxes and cavitation! Ships, submarines and torpedoes equipped with such a bladeless impeller will differ significantly in velocity, maneuver, noise and production costs.
New generation bladeless marine propulsor
At present marine propellers are not 100% efficient. Not all the power applied to the propeller drive shaft has been converted into forward movement of the boat.

Various advantages have realised the use of a more efficient propeller, with the possibility to reduce the rate of fuel consumption and increase the speed of the vessel.

Every present day propeller has a definite upper limit as to the rate at which it can be rotated do to the cavitation effect. Such effects can become sufficiently violent to cause damage to the propeller. A marine propeller capable of operating at higher revolution rates would offer various advantages. For the case of larger oceangoing type boats and ships, for example, it would enable a more direct connection of the propeller to the high speed turbines commonly used, thus providing a further improvement in overall efficiency.

In accordance with the invention, a marine impeller comprises of a housing in which the impeller rotates. The impeller is a topless cylinder made of expanded metal mesh. A completely new type of bladeless propulsor during rotation, the water moves instantaneously in a very thin water cylinder, where the water abnormally loses viscosity, in the short time while in the propulsor. This cylinder of water moves continuously to the outer periphery by centrifugal forces. Differentiated hydrodynamics and thermodynamics forms a process of super fluidity, which generates an abnormal increase in the water flow at the outlet of the propulsor.

It is another object of the invention to provide sustainable management of the ship's speed by adjusting the speed of the drive motor.

This embodiment includes a propulsor housing having an enlarged midsection and tapered forward and rearward portions wherein a bladeless impeller in the shape of a cylinder without a top circular plane surface but with a curved surface in the middle made of expanded metal mesh. The bottom circular plane surface is attached to its drive shaft.

A conventional propeller operates more in the manner of a screw. The blades of the conventional propeller engage the water and produce a direct thrust thereon, which pushes the water in the rearward direction.

An impeller is also appropriate for use as a compressor in refrigeration and air conditioning technology. The device may be employed as a basic element for all kinds of pumps.

Propulsors can also function on atmospheric air on the vertical takeoff and landing aircrafts.

This is the future of shipbuilding without propellers, blades, friction, noise, cavitation and high production costs of marine propulsors. Surface vessels and submarines equipped with bladeless impellers will differ significantly in velocity, maneuverability, and low noise and production costs.

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Countries (11)

  • Bulgaria, Canada, Germany, Finland, France, India, Norway, Saudi Arabia, Sweden, Turkey, United Kingdom


marine propulsor, marine propulsion
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