5 Exterior Function
The construction of the fins is based on two vertically placed frames with the same shape as the main frame. The elastomer frame of the fins have local reinforced fibers to achieve the right stiffness. For hydro dynamic purposes the fins are gradually tapered towards the end.
The piston is shown as a design element so that the user can see the whole mechanism, this honest design should give the user a better understanding of the product.
The hydro dynamic movement of the fins are powered by a pneumatic system. The movement of the fins generates force that propels the craft forward using the same principle as normal diving fins. The piston is a double piston that expands and contracts simultaneously to decease lateral motion of the craft.