The HTP Technology


The patented “Hexa-Tetrahedron propeller (HTP)” (or rather impeller) is an innovative alternative for ship propellers, turbines and pumps. The Hexa Tetra technology consists of 24 Equilateral triangles forming 6 tetrahedrons linked together in a Bricard ring forming an object in 3D with some intriguing geometric properties. The Hexa Tetra can twist within itself and it will propagate through its medium if the internal rotation could be achieved by an internal or external driving force.

All conventional propellers and centrifugal pumps work on the basis of rotating the fluid (water, air or any other liquid or gas) about an axis. The propeller blades maintain a certain “attack angle” with the fluid which causes thrust and torque. The torque (or swirl) is the rotational force on the fluid. The swirl does not contribute to the propulsion force and is lost energy. The swirl losses depend on the diameter and rotation speed and are practically 30-70%.

The Hexa Tetra has no axial swirl or torque and most energy is used to create thrust only. The working is similar to what is known as the imaginary actuator disk and the hypothesis is that the technology will have a performance close to the efficiency of the “ideal propulsion”. The technology, including various construction proposals, is patented and is in progress in verifying the theory by prototype testing. The theory has already been confirmed by running a computational fluid dynamics (CFD) simulation.

A number of evolutionary steps have been made in order to make the principle of the kinetic properties of the Caleidocyclus practically feasible. From the analysis of the basic geometric properties, a practical description was derived with which the Hexa Tetra could actually be constructed as a real working device with promising hydro- and aerodynamic properties.

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