Human Powered Boats Hydrofoil Concepts

Human Powered Hydrofoil Concepts
By Warren Beauchamp

This concept uses a sealed streamliner fairing to float at and cruise at low speeds. At higher speeds, the hydrofoils would lift the whole fairing out of the water. At these higher speeds, the streamlined fairing would increase the total speed of the vehicle by decreasing air resistance. In addition, this would be a very light weight design, which would enable the vehicle to "fly" with a lower power input.

The concept below is a catamaran/hydrofoil. It would cruise on the catamaran hulls at low speed, then pop out of the water at higher speeds. Due to the low height of the hulls about the water, this may not be practical in anything but flat water. 

The HPB concept below uses a combination of minimalist "toothpick" catamarans, a submerged buoyancy "torpedo", and hydrofoil wings to attempt to correct problems inherent in both the submerged buoyancy and the hydrofoil designs. The torpedo designs are typically dynamically unstable designs, so that any speed which could have been gained by a submerged buoyancy design, is lost by multiple surface stabilizers. The hydrofoil design generally requires a high rider power level to "fly", which translates to a short time before the vehicle returns to displacement boat mode. This design uses submerged buoyancy to float about 100lbs of the combined vehicle and rider. This low weight allows the hydrofoil to fly the vehicle at a relatively low speed. In addition, the hydrofoil wings would balance the submerged buoyancy torpedo, providing it with dynamic stability. It is my hope that this craft would be able to sprint at higher speeds than a displacement boat, but still be able to "fly" for long periods of time at a lower speed. Using the rule of thumb that 1 cubic foot of air will float 60 lbs,  I figure a torpedo shape about 6" in diameter and 8 ft long will support 100 lbs. 

Back to the HPB page