About Hydrofoils
After almost 5 years of refining the classic ‘Steve Lis fish design’, Daniel Thomson has developed a unique design break through. Evolving the fundamental characteristics of the fish into a new design category. ‘Hydrofoil’ design was named because at it could not be categorised as twin-fin nor Fish, but rather a modern, ‘hydrodynamic-foil engineered planning hull’ or in short “Hydrofoil".
“ I have incorporated the theories of hydrodynamic planning hulls developed by early 20th century Naval Hydro-physicist Lindsay Lord. Lord’s planning hull theories in the 1946 literature “Architecture of Planning Hulls” were explored with great success by Guru surfboard designer Bob Simmons in the late 1940’s and early 50’s with the now legendary dual fin planning hull surfboard. Based on Bernoulli principle o f “dynamic lift” the Lord derivative Bernoulli formula of ( L=CL P/2 SV2) explores hydrolic force interacting with a foil engineered object. Bernoulli’s equation states: “ Where area of an object is decreasing = the (V) Velocity of the fluid increases. Due to Increasing velocity of the fluid = (P) Pressure of the fluid decreases, therefore creating (L) Lift “ Considering these formulas When i engineer my surfboards, i incorporate a parallel outline with a gradual area decrease, falling from a well forward wide point, creating a noticeable increase in speed, lift and hydro-planning sensation “.
- Daniel Thomson