Once the foil is created or an existing foil is traced over with a spline curve, extensive calculations can be run to determine the lift and drag features of the current foil at any desired Reynolds number. The designer manipulates NURB vertex control points to adjust the shape of the foil. Curves that display the slope and curvature of the foil curve show the smoothness or fairness of the foil in great detail. FOIL computes the position of maximum thickness and the actual percent thickness in real time as the vertex control points are moved. The foil may be scaled to an exact thickness at any time.
FOIL computes Reynolds numbers based on water or air usage, chord length and a range of velocities.
Each run by FOIL computes 13 angles of attack and 5 Reynolds numbers. FOIL displays lift and drag, lift to drag ratio, onset of turbulence and flow separation and the occurrence of bubbles. Laminar flow is easily observed. FOIL has been shown to be an exceptionally powerful program and has been used to create a number of optimized foils that have demonstrated themselves as very fast in Grand Prix level racing. Information Request Form Select the items that apply, and then let us know how to contact you.