Download the free update "2009" software calculation of hydraulic or ventilation losses and aerodynamics hydrodynamics force

Fast calculation of Wing fin and other foils

 Whether an aircraft wing lift force or a boat sail lift force can be compute in the same way We assume that the weight of the aircraft is 2100 N. Wanted: - A lift force balancing the weight of our aircraft: either N = 2100 lift = weight To do this we adjust: The Incidence angle of the wing The length of the wing The profile Chord or width of the wing The speed of Aircraft ***************** With Mecaflux software - Select a profile with drag and lift . For our wing we use the Profile BE50 . (the Polar profiles are already parameterized in MECAFLUX but you can change the Cd and Cl . - Enter parameters of the fluid speed: 10 knots, temperature 20 ° C, density: Air (1225 Kg/m3) - Enter the chord of the profile (the width of the wing, take 4 meter) - Enter the length of the wing (say 10 meters) -Incidence angle of wing (try 10.5 °. The incdences proposed are those studied in wind tunnels .They are confined to the interesting angles) -Click on calculate   The diagram shows the profile BE50 after calculating: 792 Newtons of lift with 10 knot winds *****************   we seek to balance a weight of 2100 N our lift is too low - Change the profile chord (the width of the wing, take 6 meters) - Change the length of the wing (say 18 meters) -Click on calculate the lift force for b50 is 2112.604 Newtons (215.485633 Kgf) with 10 knots. So we need a wing of 18 meters to raise our plane with a speed of 10 knots ***************** see with a speed of 30 knots: - Change the parameters of the fluid speed: 30 knots, temperature 20 ° C, density: Air (1225 Kg/m3) - We keep 18 m height - We keep 6 m in width (chord) -Click on calculate the lift force for b50 is 19,013.44 Newtons (1939.370426 Kgf) with 30 knots 19013/2112 = 9 times more lift with 3 times more speed in fact we see, by changing the height and width of the profile, with only a wing of 6 meters in length and 2 meters wide with 30 knots of speed we have a sufficient lift to fly our aircraft. Warning: the loss of lift at the wing tips are not taken into account. For a wing with a length of 10 to a width of 1 count approximately 15% loss of lift compared with results MECAFLUX. For a wing with a length of 10 to a width of 5 count approximately 30% loss of lift compared with results MECAFLUX. you can create your profile according to your own tables and polar coordinates with the foils profiler integrated Mecaflux and then export your files to solidworks for details: create a file of your 3d wing :