Flapping inverting foil (patent pending)

Discussion in 'Boat Design' started by frogger1225, Sep 7, 2014.

  1. Tiny Turnip
    Joined: Mar 2008
    Posts: 760
    Likes: 193, Points: 43, Legacy Rep: 743
    Location: Huddersfield, UK

    Tiny Turnip Senior Member

  2. Rurudyne
    Joined: Mar 2014
    Posts: 1,170
    Likes: 40, Points: 48, Legacy Rep: 155
    Location: North Texas

    Rurudyne Senior Member

    Heh ... that dog ... derp to the future!
     
  3. SamSam
    Joined: Feb 2005
    Posts: 3,900
    Likes: 197, Points: 63, Legacy Rep: 971
    Location: Coastal Georgia

    SamSam Senior Member

    How you get on it to begin with is a question. It doesn't look stable at all, so staying on it is the next problem, which is quickly followed by the first problem, again.

    I think the dog has questions about the whole contraption also.
     
  4. Rurudyne
    Joined: Mar 2014
    Posts: 1,170
    Likes: 40, Points: 48, Legacy Rep: 155
    Location: North Texas

    Rurudyne Senior Member

    I think the maker may have had a fixation on older Romulan ship design.

    [​IMG]

    Hmmmm ... adding wing tip buoyancy tubes held out of water when level could help stability....
     
  5. Tiny Turnip
    Joined: Mar 2008
    Posts: 760
    Likes: 193, Points: 43, Legacy Rep: 743
    Location: Huddersfield, UK

    Tiny Turnip Senior Member

    I think you've nailed it there, Ru - he's even had a special Romulan suit made:

    [​IMG]
     
  6. Rurudyne
    Joined: Mar 2014
    Posts: 1,170
    Likes: 40, Points: 48, Legacy Rep: 155
    Location: North Texas

    Rurudyne Senior Member

    Ahhh ... Star Trek: Nemisis! My eyes! They burn!
     
  7. frogger1225
    Joined: Aug 2014
    Posts: 78
    Likes: 1, Points: 8, Legacy Rep: 12
    Location: Pennsylvania

    frogger1225 Junior Member

    Please NOTE: The MyArk shark special, the rocking horse thrill ride and Spiderman suit are not patent pending by me !!

    However I shall be back soon to show off the latest from the Frogger fabrication shop. Testing so far has been fun and awesome.

    That is all...
     
  8. Rurudyne
    Joined: Mar 2014
    Posts: 1,170
    Likes: 40, Points: 48, Legacy Rep: 155
    Location: North Texas

    Rurudyne Senior Member

    You know, since I was a kid when I swim underwater I've used just my legs for propulsion and have held my arms forward, hands held to use like diving planes. As a technique goes it actually kinda works, at least for me. Let's me roll and stuff. Always felt like I was struggling less to stay under when trying to go from one end of the pool to the other. Maybe if you connected your paddle blades to a pivot, reshape them for lower drag, they could be used that way?
     
  9. daiquiri
    Joined: May 2004
    Posts: 5,373
    Likes: 252, Points: 93, Legacy Rep: 3380
    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

    These things are definitely not helping at kickstarter...
     
  10. myark
    Joined: Oct 2012
    Posts: 690
    Likes: 16, Points: 28, Legacy Rep: 57
    Location: Thailand

    myark Senior Member

    bi-flapper boat experiment

    https://www.youtube.com/watch?v=l1JCBwp2RnY

    An oscillating foil drive boat that uses the new WCBE circuit to mix and auto-flap the servos....the module also allows for steering...a nice feature that works well on this first test of the experimental prototype boat....I purposely chose this scum surfaced pond to demonstrate how well the system handles the thick algae. A prop would eventually get bogged down and stall. The same circuit will soon be tested on a blimp. The zip lock bag keeps the electronics dry and the mast is for the antenna.

    https://www.youtube.com/watch?v=GrdmZWEjvV0

    The BECCA, Bi-flapper Experimental Craft for Calculating Angles.......an oscillating foil catamaran optimized for determining the most efficient foil size/shape, boom length, sweep angle and rate.




    Further development of Prototype 3 and 4.
    This Video includes 2 possible prototypes for foil propulsion during week 4.
    This is a project done for Middlesex University

    https://www.youtube.com/watch?v=pvFZ81smh8I
     
  11. frogger1225
    Joined: Aug 2014
    Posts: 78
    Likes: 1, Points: 8, Legacy Rep: 12
    Location: Pennsylvania

    frogger1225 Junior Member

    Frogger technology in its infancy
    https://www.youtube.com/edit?o=U&video_id=XjPCIQPv14s

    A rigid blade just doesn't work as well... hence the patent filing !!

    I would suggest that employing a variable cam Kjell Wiggle-drive in the Prototype 3 or 4 designs of yours will significantly help with your movements to be not so complex...
     
  12. frogger1225
    Joined: Aug 2014
    Posts: 78
    Likes: 1, Points: 8, Legacy Rep: 12
    Location: Pennsylvania

    frogger1225 Junior Member

    Attached Files:

  13. frogger1225
    Joined: Aug 2014
    Posts: 78
    Likes: 1, Points: 8, Legacy Rep: 12
    Location: Pennsylvania

    frogger1225 Junior Member

    BTW... Frogging on a SUP is easy and awesome!
     

    Attached Files:

  14. myark
    Joined: Oct 2012
    Posts: 690
    Likes: 16, Points: 28, Legacy Rep: 57
    Location: Thailand

    myark Senior Member


  15. frogger1225
    Joined: Aug 2014
    Posts: 78
    Likes: 1, Points: 8, Legacy Rep: 12
    Location: Pennsylvania

    frogger1225 Junior Member

Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.