High Performance MPX Foil/Self-righting Trimaran-The Test Model

Discussion in 'Multihulls' started by Doug Lord, Dec 28, 2010.

  1. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    WOLF daughter of fire arrow
    News Flash: Discovered a way to simultaneously adjust the angle of incidence of the ama planing surface on both sides. Added below under #12.
    ==================
    WOLF specs(tentative) :
    LOA 14.8' changed 6/2/18
    Max Beam 16'changed 6/14/18
    CL ama hull to CL ama hull*-14' added 6/14/18
    *Two stage ama consists of ama hull+ curved piece for extra buoyancy

    Target weight 175-190lb
    SA-
    --upwind: 149 sq.ft
    --downwind: 249 sq.ft
    --max pressure before depowering/reefing: 1.58lb/sq.ft*
    * NOTE-see previous page-post 2697- for max pressure comparison with an F18.
    Cost about 60% of WOLF
    ------------------------------------------------
    Advantages:


    1-Singlehander-will not have the capability of taking two people for a ride with high performance upwind. Downwind will foil with a crew weight around 340lb in 6.5-7.5 knots of wind. Excellent upwind performance with 200lb crew. changed 6/14/18
    2- Will foil in 5 knots of wind with 200lb crew . changed 6/14/18
    3-Carbon rotating wing mast, carbon cross arms and carbon foils.
    4-Retractable foils(from cockpit).
    5-Extremely comfortable.
    6-Uses the Fire Arrow Foil System(like Fire Arrow, Gitana 17, Banque Pop and Maserati)-- the same as the original system first used on the Test Model. Two UptiP ama foils-one used at a time-and one wand controlled mainfoil for very early takeoff and capable of substantial downforce all working with a single rudder T-foil. Downforce can be virtually
    instantaneous adding RM in response to gusts. expanded 7/6/18
    7-Foiling throughout the wind range -including very light air-the essence of 3D SAILING!
    8- Assy Spin/Screecher retracted under the front deck.
    added 6/3/18
    9- Boat folds from max beam to trailerable width in about 4 minutes. No waterstays. added 6/14/18
    10-Mid (wish)boom mainsheet so sheet is always in forward hand and extention tiller always in aft hand. added 6/14/18
    11-Quickly self-draining cockpit-large scuppers with backflow flap. added 6/14/18

    12-Adjustable angle of incidence of planing surface of each ama simultaneously. Angle of incidence of ama foil has to be changed when this is done. Planing surface starts at +4 degrees. added 6/29/18
    ==================
    Fire Arrow-inspiration for WOLF:

    MPX_Fire Arrow-3D SAILING-7-24-14 009 (2).JPG
     
    Last edited: Jul 6, 2018
  2. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  3. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    WOLF daughter of fire arrow-- Finally painted and mostly assembled. Going to try two or more basic paint schemes to see which color or combination works best. See specs above:



    Wolf 14 concept model-white 7-9-18 001.JPG

    Wolf 14 concept model-white 7-9-18 002.JPG

    Wolf 14 concept model-white 7-9-18 004.JPG

    Wolf 14 concept model-white 7-9-18 003.JPG
     
    Last edited: Jul 9, 2018
    David Cooper likes this.
  4. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    WOLF daughter of fire arrow-- exact scale foils:

    WOLF 14 concept model-foils-7-10-18 002.JPG

    WOLF 14 concept model-foils-7-10-18 006.JPG

    WOLF 14 concept model-foils-7-10-18 003.JPG

    WOLF 14 concept model white foils-7-10-18 003.JPG
     
    Last edited: Jul 10, 2018
  5. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    WOLF daughter of fire arrow- Almost every boat I've designed and built and/or raced has been red or orange since I was 14-until this one. I've spent some time studying how the thing looks white and I'm liking it. I decided to touch up the crossarms and paint the cockpit black(temporarily) and the details of the paint job matter.
    There are some detailed additions to be made that I'm thinking will show up better with a simple, probably white, paint job.
    Ran out of light with this picture:

    WOLF 14 cockpit black 7-10-18 002.JPG
     
    Last edited: Jul 10, 2018
  6. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    WOLF daughter of fire arrow(update 7/11/18)
    --News Flash: Discovered a way to simultaneously adjust the angle of incidence of the ama planing surface on both sides. Added below under #12.
    --Added more on retractable foils under #4 .
    --Aerodynamic surfaces to be added to forward and aft crossarms-see#13.
    --Planing amas-see #14

    ==================
    WOLF specs(tentative) :
    LOA 14.8' changed 6/2/18
    Max Beam 16'changed 6/14/18
    CL ama hull to CL ama hull*-14' added 6/14/18
    *Two stage ama consists of ama hull+ curved piece for extra buoyancy

    Target weight 175-190lb
    SA-
    --upwind: 149 sq.ft
    --downwind: 249 sq.ft
    --max pressure before depowering/reefing: 1.58lb/sq.ft*
    * NOTE-see post 2697- for max pressure comparison with an F18.
    Cost about 60% of WOLF
    ------------------------------------------------
    Advantages:


    1-Singlehander-will not have the capability of taking two people for a ride with high performance upwind. Downwind will foil with a crew weight around 340lb in 6.5-7.5 knots of wind. Excellent upwind performance with 200lb crew. changed 6/14/18
    2- Will foil in 5 knots of wind with 200lb crew . changed 6/14/18
    3-Carbon rotating wing mast, carbon cross arms and carbon foils.
    4-Retractable foils(from cockpit). Mainfoil retracts flush* with bottom and tips are designed to not dig into sand. Rudder foil retracts above bottom. Ama foils retract above waterline when boat is level.
    * See picture below. expanded 7/12/18
    5-Extremely comfortable.
    6-Uses the Fire Arrow Foil System(like Fire Arrow, Gitana 17, Banque Pop and Maserati)-- the same as the original system first used on the Test Model. Two UptiP ama foils-one used at a time-and one wand controlled mainfoil for very early takeoff and capable of substantial downforce all working with a single rudder T-foil. Downforce can be virtually
    instantaneous adding RM in response to gusts. expanded 7/6/18
    7-Foiling throughout the wind range -including very light air-the essence of 3D SAILING!
    8- Assy Spin/Screecher retracted under the front deck.
    added 6/3/18
    9- Boat folds from max beam to trailerable width in about 4 minutes. No waterstays. added 6/14/18
    10-Mid (wish)boom mainsheet so sheet is always in forward hand and extention tiller always in aft hand. added 6/14/18
    11-Quickly self-draining cockpit-large scuppers with backflow flap. added 6/14/18

    12-Adjustable angle of incidence of planing surface of each ama simultaneously. Angle of incidence of ama foil has to be changed when this is done. Planing surface starts at +4 degrees. added 6/29/18
    13- Aerodynamic surfaces to be added to forward and aft crossarms. Adjustable flaps to be added on rear cross each side. Jib foot and forward part of main foot to be sealed to deck.
    14- Planing amas designed for incidental contact with water at speed and for inadvertent contact at slow speed. added 7/11/18
    -------
    Flush mainfoil recess in hull bottom:

    WOLF 14 ccpt model recess-7-12-18 002.JPG

    ==================================

    Fire Arrow-inspiration for WOLF:


    MPX_Fire_Arrow-Port Tack 7-24-14.JPG
     
    Last edited: Jul 12, 2018 at 6:09 PM
  7. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    Fire Arrow Foil System-- I was re-reading the thread and found this detail page(p110) shortly after the boat first flew(page 106)--


     
  8. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    Fire Arrow Foil System--- A classic from Magnus Clarke on how UptiP foils work:

     

  9. Doug Lord
    Joined: May 2009
    Posts: 15,049
    Likes: 175, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    WOLF daughter of fire arrow WOLF aero mocked up: Leading edge/spray guard will be fixed on each side of the forward cross. One trailing edge adjustable flap on each side of the rear cross.
    HydroTurf in cockpit:

    WOLF 14 concept aero  7-15-18 001.JPG
     
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