Minimum turbulence, maximum thrust:
our patented propellers taken from the shipbuilding sector
Most of the propellers used on leisure boats are based on test series carried out in the 1940s to 1960s in the Wageningen test institute in the Netherlands and by the US Navy. These tests led to general design principles which are expressed in rules of thumb and design tables.
For some time now, advanced large ships have been equipped with propellers designed using multidimensional optimization calculations. In contrast to standard propellers, the pitch and camber of the propeller are almost constant over all propeller segments. Because the pitch and camber are optimized step-by-step by the vortex lattice method, requiring many thousands of iteration steps for each propeller segment. The additional design possibilities provided by this approach allow the propeller to deliver additional speed with maximum efficiency. On the basis of these characteristics, the propellers are referred to as "Variable-Pitch-Variable-Camber" (VPVC). VPVC propellers have been patented by Torqeedo.