Wing Fold/Hanger Space

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by 103, Oct 5, 2019.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Oct 5, 2019 #1

    103

    103

    103

    Well-Known Member

    Joined:
    May 3, 2015
    Messages:
    105
    Likes Received:
    60
    Location:
    Wauwatosa WI
    Ideal Wing fold is a 10 minute one person job. Road ability is secondary to the ability to slot in and share a scarce commodity of hanger space. I have plans for FRED which is what Scott Perkins terms a compound fold. Leading edge points to the ground and wing folds parallel to the fuselage.

    I have attached a few pictures of a FP101 with a custom semi compound arrangement. This has an advantage over a kitfox swing back wing in that you do not need the complexity removing the rear cabin and of flaps to swing up when folding along side the cabin.

    Balancing the need to keep it simple robust and not add much to the empty weight is where the sharp pencil is needed.

    Please share your designs on this thread for educational use. The 101 in the pictures was built in the early 80's in Wisconsin. The Snap shots are all I have I did not build it. It appears to add a second V to pivot the wing. The Pictures do not provide enough detail. 20191004_204531_resized.jpg 20191004_204537_resized.jpg
     

    Attached Files:

    FritzW likes this.
  2. Oct 5, 2019 #2

    Riggerrob

    Riggerrob

    Riggerrob

    Well-Known Member

    Joined:
    Sep 9, 2014
    Messages:
    1,150
    Likes Received:
    316
    Location:
    Canada
    That “pitched roof” will shed snow loads better than wings that fold to create a “flat roof.”
    Why care?
    A few years back, during a heavy snow storm, a Piper-type wing collapsed.
     
  3. Oct 6, 2019 #3

    pictsidhe

    pictsidhe

    pictsidhe

    Well-Known Member

    Joined:
    Jul 15, 2014
    Messages:
    6,680
    Likes Received:
    1,760
    Location:
    North Carolina
    That looks more like a removeable wing with storage brackets. Perhaps the main V strut has a pivot.
     
  4. Oct 6, 2019 #4

    Dana

    Dana

    Dana

    Super Moderator

    Joined:
    Apr 4, 2007
    Messages:
    8,546
    Likes Received:
    2,962
    Location:
    CT, USA
  5. Oct 6, 2019 #5

    Riggerrob

    Riggerrob

    Riggerrob

    Well-Known Member

    Joined:
    Sep 9, 2014
    Messages:
    1,150
    Likes Received:
    316
    Location:
    Canada
    If you want to use wing struts as part of the folding mechanism, what about Stitts Playmate?
    It has a low wing braced by V struts terminating bear the lower corner of the windshield. Pulling the front spar locking pin allows folding wings back to the tail. A travelling brace holds wing tips against the tail.
     
  6. Oct 6, 2019 #6

    Riggerrob

    Riggerrob

    Riggerrob

    Well-Known Member

    Joined:
    Sep 9, 2014
    Messages:
    1,150
    Likes Received:
    316
    Location:
    Canada
    Me. 103,
    If you want to avoid Kitfox-type hassles (removing turtle deck fairing and disconnecting flaps) take a close look at the Luton Major.
    Luton Major is a 1930s-vintage British design that mounts wings on top of the cabin roof and the turtle deck is narrow enough to not interfere with flaps.
    Luton Major fold geometry also allowed wing tips to rest on top of the horizontal stabilizer.
    Luton Major plans were sold in North America by Falconar as the “Cub Major.”
     
  7. Oct 7, 2019 #7

    103

    103

    103

    Well-Known Member

    Joined:
    May 3, 2015
    Messages:
    105
    Likes Received:
    60
    Location:
    Wauwatosa WI

    Yes fortunate the cub major plans remain available under new management. Looks like a candidate for a Corvair engine.

    http://cubmajor.com/

    Good looking airplane
    https://forum.flyinginireland.com/viewtopic.php?t=9129

    Vintage film

     
    fly2kads likes this.
  8. Oct 7, 2019 #8

    henryk

    henryk

    henryk

    Well-Known Member

    Joined:
    Mar 8, 2010
    Messages:
    4,644
    Likes Received:
    440
    Location:
    krakow,poland


    =orginal,interesting wing fold system ! (1949 !!!)
     
    fly2kads likes this.
  9. Oct 8, 2019 at 3:15 AM #9

    Tony Spezio

    Tony Spezio

    Tony Spezio

    Active Member

    Joined:
    Sep 19, 2019
    Messages:
    25
    Likes Received:
    23
    Few photos of my Tuholer folding wing setup Remove strut bolt and rear spar bolt. Rotate and fold back to wing support.
     

    Attached Files:

    proppastie, 103, fly2kads and 2 others like this.

Share This Page

arrow_white