LOGICIEL CALCUL VOILE BATEAU AILE PORTANCELOGICIEL CALCUL VOILE BATEAU AILE PORTANCE

see also

Mecaflux is a simplified sails calculation software . HELICIEL is a calculation software, propeller wing sail fuller. For more advanced calculation, with twisted shapes and distributions of elliptical chords we use Heliciel

Modeling wings or foils in heliciel Modeling a wing mast sailing in heliciel

See Tutorials Heliciel

SAIL BOAT LIFT CALCULATION SOFTWARE

Simplified calculation example of a sail of Sailboat:

Whether it is an airplane wing or sail of a sailboat calculating the lift can be done in the same way (is neglected in this first approach, the aspect ratio and twist, For more advanced calculation, with twisted shapes and distributions of elliptical chords we use Heliciel)

 We assume in this example that:

 

we seek:

To realize this goal, we can play on:

 

with Mecaflux

  1.     - select a profile with drag and lift ,we use for our sail the profile Be50 (polar profiles are already set in mecaflux but you can change the Cd and Cl)

  2.     - Enter the parameters of the fluid:

    -speed :10 knots FORCE3 small breeze , temperature:20°C, density:air (1.225 Kg/m3)

  3.     - Enter the profile chord (the width of the sail, take 4 meter)

  4.     - Enter the height of the sail (say 10 meters)

  5.     - the angle of incidence of the Sail  (try 10.5°)

  6.     - Click to calculate

calcul voile

The diagram shows the profile BE50 after calculating the value of the lift 782 Newtons with 10 knots of wind

*****************

we seek to balance resistance to the advancement of 2100 N, the wind and the sails are therefore too low

  1.      - Change the profile chord (the width of the sail, take 6 meter)

  2.      - Change the height of the sail (say 18 meters)

  3.      - Click to calculate

the lift force for b50 is 2112 Newtons (215 kg.f) with 10 knots of wind

so we will have almost two times higher than the ship sail for the advance to 10 knots by Force 3

*****************

see by force 7 or 30 knots:

  1. - Change the parameters of the fluid-velocity: 30 knots (force7), temperature: 20 ° C, density air (1.225 kg/m3)

  2. - we keep 18 m high

  3. - the profile chord (the width of the sail,we keep 6 meter)

  4. - Click to calculate

The lift force for b50 is 19,013 Newtons (1939 kg.f) with 30 knots of wind::  19013/2112= 9 times more lift with three times more wind. It's time to reduce sail area.

In fact we see, by changing the height and width of the profile, that with a sail 6 meters high and 2 meters wide by force 7 we have enough lift to propel our boat at 10 knots...

 

 

 

charge hydrostatique derive aerodynamique hydrodynamique construire aile foil construire eolienne dimensionner conduits fumée carene dirigeable construire helice propulsion derive aerodynamique hydrodynamique frottement sur une surface de coque trainée resistance au vent trainée resistance au vent construire eolienne trainée resistance au vent conception helice bateaux derive aerodynamique hydrodynamique carene dirigeable frottement sur une surface de coque construire aile foil construire aile foil conception hydrolienne calcul voile frottement sur une surface de coque trainée resistance au vent calcul voile construire aile foil construire eolienne construire helice propulsion aeraulique aspiration air systemes ventilation aeration pertes charges vannes debit et pression conduits pompes et ventilateurs vidange reservoir construire aile foil Logiciels de la suite Mecaflux Forces sur des objets géometriques dans un courant de fluide ramification et boucles réseaux dimensionner conduits fumée calcul systemes réseaux fluides gaz liquides helice a vitesse nulle sustentation resistance aerodynamique vehicules calcul debit rivierre helice de captage turbine Kaplan hydroelectrique charge hydrostatique carene dirigeable construire helice propulsion derive aerodynamique hydrodynamique