Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. Sgf

    Traditional rudder design query

    Sgf, Jul 12, 2025 at 4:36 PM
    Replies:
    13
    Views:
    212
    seasquirt
    Jul 13, 2025 at 8:05 AM
  2. motorbike

    Keel Section

    motorbike, Feb 21, 2015 ... 2 3 4
    Replies:
    47
    Views:
    16,434
    Doug Halsey
    Jul 11, 2025 at 8:01 PM
  3. javed

    Savitsky method result understanding confusion

    javed, Jun 17, 2025
    Replies:
    4
    Views:
    650
    Zachary Peter
    Jun 28, 2025
  4. Best Designer Ever

    Chine Location

    Best Designer Ever, Jun 12, 2025 ... 2
    Replies:
    16
    Views:
    890
    TANSL
    Jun 16, 2025
  5. 67-LS1

    Planing speed and pad bottoms

    67-LS1, Apr 19, 2025
    Replies:
    5
    Views:
    1,436
    braoun
    Jun 10, 2025
  6. CarlosK2

    Prof. Lex Keuning in Memoriam

    CarlosK2, Jun 2, 2025
    Replies:
    1
    Views:
    594
    CarlosK2
    Jun 2, 2025
  7. aL27jrcf

    [newbie]a rudder of a sailboat having entrance-exit holes?

    aL27jrcf, May 27, 2025
    Replies:
    9
    Views:
    848
    montero
    Jun 1, 2025
  8. Anoop_ODL

    AQWA Fender Question

    Anoop_ODL, May 13, 2025
    Replies:
    3
    Views:
    978
    MaisieKeller
    May 20, 2025
  9. mc_rash

    heave oscillation floating body

    mc_rash, Jan 12, 2025
    Replies:
    5
    Views:
    1,862
    mc_rash
    May 14, 2025
  10. Greg Oosterbaan

    Reducing detachment drag

    Greg Oosterbaan, May 12, 2025
    Replies:
    7
    Views:
    971
    gonzo
    May 13, 2025
  11. Joonatan

    aft height effect on hull resistance on a vessel

    Joonatan, Feb 4, 2025
    Replies:
    3
    Views:
    1,702
    jehardiman
    May 2, 2025
  12. Alexanov

    Catamaran resistance

    Alexanov, Jan 13, 2025 ... 2
    Replies:
    18
    Views:
    4,060
    FESB
    Feb 20, 2025
  13. seasquirt

    Sailing in the shade

    seasquirt, Feb 15, 2025
    Replies:
    5
    Views:
    1,838
    seasquirt
    Feb 18, 2025
  14. montero

    Aerodynamic table

    montero, Feb 4, 2025 ... 2
    Replies:
    19
    Views:
    3,596
    montero
    Feb 13, 2025
  15. JC Campbell

    Water ballast

    JC Campbell, Dec 14, 2024 ... 2 3 4
    Replies:
    59
    Views:
    5,243
    Dave G 9N
    Feb 10, 2025
  16. aiprt

    Forces on mast foot

    aiprt, Nov 11, 2024 ... 2
    Replies:
    21
    Views:
    4,317
    CT249
    Jan 31, 2025
  17. Boston Hatteras

    Interceptor type hull trim devices

    Boston Hatteras, Jan 2, 2025
    Replies:
    6
    Views:
    2,376
    BMcF
    Jan 17, 2025
  18. CarlosK2

    The Contact Patch

    CarlosK2, Aug 13, 2024 ... 2
    Replies:
    20
    Views:
    4,144
    gonzo
    Jan 6, 2025
  19. Mikko Brummer

    Is circulation real?

    Mikko Brummer, Jan 25, 2013 ... 50 51 52
    Replies:
    765
    Views:
    102,744
    Sailor Al
    Jan 4, 2025
  20. Thinkoutbox

    Direct Upwind Sailing

    Thinkoutbox, Dec 25, 2024 ... 3 4 5
    Replies:
    73
    Views:
    6,218
    montero
    Jan 4, 2025
  21. Slingshot

    Foil section? For foil board

    Slingshot, Dec 24, 2019 ... 2 3
    Replies:
    34
    Views:
    16,323
    Erwan
    Dec 22, 2024
  22. ijonjio

    Calculating Boat's Diesel Consumption

    ijonjio, Dec 18, 2024
    Replies:
    4
    Views:
    1,881
    gonzo
    Dec 19, 2024
  23. Maarten88

    High Camber hydrofoil section for wingfoiler

    Maarten88, Jan 21, 2024
    Replies:
    10
    Views:
    6,568
    Rasmus Sass
    Dec 9, 2024
  24. kenfyoozed

    Tritoon center log not parallel

    kenfyoozed, Nov 9, 2024
    Replies:
    14
    Views:
    2,551
    kenfyoozed
    Nov 10, 2024
  25. naserrishehri

    Emergency Sailing With 1 Side Engine

    naserrishehri, Oct 29, 2024 ... 2
    Replies:
    15
    Views:
    3,188
    BlueBell
    Nov 3, 2024
  26. Vincent DePillis

    Could adding a Yankee power up my F31 upwind?

    Vincent DePillis, Oct 8, 2024
    Replies:
    7
    Views:
    2,675
    Paul Scott
    Oct 14, 2024
  27. Aaarrrggghhh

    Americas Cup Foils

    Aaarrrggghhh, Oct 1, 2024
    Replies:
    2
    Views:
    3,069
    Aaarrrggghhh
    Oct 6, 2024
  28. Paul Scott

    Kline Fogelman airfoils for sailboats?

    Paul Scott, Oct 3, 2024
    Replies:
    2
    Views:
    2,791
    Paul Scott
    Oct 4, 2024
  29. Heimfried

    To install kind of leeboards at a solar electric katamaran

    Heimfried, Sep 16, 2024 ... 2
    Replies:
    15
    Views:
    3,894
    jmwoodring
    Sep 30, 2024
  30. Collin

    Distribution of rocker.

    Collin, Nov 3, 2011 ... 2 3 4
    Replies:
    53
    Views:
    21,805
    hosscara
    Sep 28, 2024
  31. jmf11

    Which method/tool to compare two very different wingfoil boards?

    jmf11, Aug 26, 2024
    Replies:
    11
    Views:
    3,288
    CT249
    Sep 16, 2024
  32. Michael Lambert

    Questions about surface tension

    Michael Lambert, Aug 4, 2024 ... 2
    Replies:
    21
    Views:
    4,335
    Will Gilmore
    Sep 15, 2024
  33. Senrab

    Building a scaled down International 505 dinghy

    Senrab, Aug 2, 2013
    Replies:
    13
    Views:
    7,660
    Lupa
    Sep 10, 2024
  34. jmwoodring

    What are these and what effect might they have on hydrodynamics?

    jmwoodring, Aug 25, 2024
    Replies:
    9
    Views:
    3,434
    kapnD
    Aug 29, 2024
  35. Sailor Al

    Was Marchaj having us on?

    Sailor Al, Apr 12, 2021 ... 15 16 17
    Replies:
    246
    Views:
    35,890
    Sailor Al
    Aug 14, 2024
  36. hashtag_laeuft

    Daggerboard position: Maneuverability VS. Acceleration

    hashtag_laeuft, Mar 22, 2024 ... 2 3
    Replies:
    35
    Views:
    8,605
    CT249
    Aug 1, 2024
  37. Sailor Al

    Swept Volume Theory

    Sailor Al, Aug 2, 2022 ... 22 23 24
    Replies:
    349
    Views:
    47,554
    CarlosK2
    Jul 28, 2024
  38. CarlosK2

    Fossati, Politecnico di Milano Wind Tunnel

    CarlosK2, Jul 20, 2024
    Replies:
    14
    Views:
    2,952
    CarlosK2
    Jul 20, 2024
  39. Sailor Al

    Fossati's Aero-Hydrodyamics

    Sailor Al, Jun 27, 2024 ... 4 5 6
    Replies:
    86
    Views:
    10,106
    Sailor Al
    Jul 19, 2024
  40. pitbull

    motoring sideways to boost upwind VMG

    pitbull, Jul 16, 2024
    Replies:
    2
    Views:
    2,965
    Will Gilmore
    Jul 16, 2024
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