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    Aerodynamics

    Sail design – An overview

    Having a good set of sails is crucial for enhancing a sailboat’s performance on the water. But what do we know about all the science behind sail des…
    Dario Motta
    Topics: Aerodynamics | Design | Guests | Sails
    Read
    470 International Class

    The meaning of circulation

    Circulation is one of the most misunderstood terms in sailing. Yet, circulation is essential to understand lift and why sails, wingsails, keels, rudde…
    Navalapp
    Topics: Aero - Hydro | Aerodynamics | Hydrodynamics
    Read
    A team of two girls deftly managed to sail in the sea.

    The Reynolds number

    The Reynolds number is the ratio of inertia forces to viscous forces involved in the flow. Reynolds understood that while inertia forces were dominant…
    Navalapp
    Topics: Aero - Hydro | Aerodynamics | Hydrodynamics
    Read
    Dynamic team struggle to the regatta sailing ship

    Understanding the boundary layer

    In 1904, Ludwig Prandtl introduced an approach to understanding and analyzing flows around bodies that produced a massive breakthrough: the boundary l…
    Navalapp
    Topics: Aero - Hydro | Aerodynamics | Hydrodynamics
    Read
    Sailing yacht beating upwind

    Bernoulli’s principle

    The physical significance of Bernoulli's equation is what is known as Bernoulli's principle. It states that when the velocity of a fluid increases, th…
    Navalapp
    Topics: Aero - Hydro | Aerodynamics | Hydrodynamics
    Read

    Flows in sailing

    Sailing boats interact with flows of two very different fluids: air and water. Moreover, sailing boats are able to make their way through the water su…
    Navalapp
    Topics: Aero - Hydro | Aerodynamics | Hydrodynamics
    Read

    Sails sets: Mainsail + Spinnaker forces and coefficients (calculation)

    Calculation template How does it work? See also: Sails sets: Mainsail + Flying Headsail (calculation). Sails sets: Mainsail + Spinnaker (calculation). Mainsail aerodynamic coefficients (calculation).…

    Navalapp
    Topics: Aerodynamics | Calculations | Mainsail | Pro | Sails | Sails Sets | Sails Sets Forces | Spinnaker
    Read

    Sails sets: Mainsail + Flying Headsail forces and coefficients (calculation)

    Calculation template How does it work? See also: Sails sets: Mainsail + Flying Headsail (calculation). Sails sets: Mainsail + Spinnaker (calculation). Mainsail aerodynamic coefficients (calculation).…

    Navalapp
    Topics: Aerodynamics | Calculations | Flying Sail | Headsail | Mainsail | Pro | Sails | Sails Sets | Sails Sets Forces
    Read

    Sails sets: Mainsail + Headsail forces and coefficients (calculation)

    Calculation template How does it work? See also: Sails sets: Mainsail + Flying Headsail (calculation). Sails sets: Mainsail + Spinnaker (calculation). Mainsail aerodynamic coefficients (calculation).…

    Navalapp
    Topics: Aerodynamics | Calculations | Headsail | Mainsail | Pro | Sails | Sails Sets | Sails Sets Forces
    Read

    Sails sets: Mainsail + Spinnaker (calculation)

    Calculation template How does it work? Following the ORC VPP methodology, this template calculation combines the individual sail’s characteristics of a user-defined mainsail and a…

    Navalapp
    Topics: Aerodynamics | Calculations | Mainsail | Pro | Sails | Sails Sets | Sails Sets Coefficients | Spinnaker
    Read

    Sails sets: Mainsail + Flying Headsail (calculation)

    Calculation template How does it work? Following the ORC VPP methodology, this template calculation combines the individual sail’s characteristics of a user-defined mainsail and a…

    Navalapp
    Topics: Aerodynamics | Calculations | Flying Sail | Headsail | Mainsail | Pro | Sails | Sails Sets | Sails Sets Coefficients
    Read

    Sails sets: Mainsail + Headsail (calculation)

    Calculation template How does it work? Following the ORC VPP methodology, this template calculation combines the individual sail’s characteristics of a user-defined mainsail and a…

    Navalapp
    3 Comments
    Topics: Aerodynamics | Calculations | Headsail | Mainsail | Pro | Sails | Sails Sets | Sails Sets Coefficients
    Read

    Spinnakers aerodynamic coefficients (calculation)

    Spinnakers are sails set forward of the mast where the measurement between the half luff point and the half leech point (SHW) is equal or greater than…
    Navalapp
    Topics: Aerodynamics | Calculations | Coefficients | Pro | Sails | Single Sails | Spinnaker
    Read

    Headsails “Set Flying” aerodynamic coefficients (calculation)

    A headsail is a sail set forward of the mast. Headsails may be set on the forestay or set flying, i.e., with no sail edge attached to the forestay. Wi…
    Navalapp
    Topics: Aerodynamics | Calculations | Coefficients | Flying Sail | Headsail | Pro | Sails | Single Sails
    Read

    Headsail aerodynamic coefficients (calculation)

    A headsail is a sail set forward of the mast, or of the foremast mast if there is more than one mast, where the measurement between the half luff poin…
    Navalapp
    Topics: Aerodynamics | Calculations | Coefficients | Headsail | Sails | Single Sails
    Read

    Mainsail aerodynamic coefficients (calculation)

    A mainsail is a sail with the luff attached to the mainmast. The mainmast is the only mast in a una rig, sloop rig, or cutter rig, the fore mast in a …
    Navalapp
    Topics: Aerodynamics | Calculations | Coefficients | Mainsail | Sails | Single Sails
    Read

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    Navalapp. Sailing Yachts Design & Performance
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