New ultralight - what configuration?

Discussion in 'The light stuff area' started by Head in the clouds, May 27, 2012.

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What configuration would you choose if you were to build an ultralight

  1. Biplane

    10 vote(s)
    25.0%
  2. Low wing

    7 vote(s)
    17.5%
  3. High wing

    20 vote(s)
    50.0%
  4. Mid wing

    2 vote(s)
    5.0%
  5. Canard

    1 vote(s)
    2.5%
  6. Other

    0 vote(s)
    0.0%
  7. Biplane

    10 vote(s)
    25.0%
  8. Low wing

    7 vote(s)
    17.5%
  9. High wing

    20 vote(s)
    50.0%
  10. Mid wing

    2 vote(s)
    5.0%
  11. Canard

    1 vote(s)
    2.5%
  12. Other

    0 vote(s)
    0.0%
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  1. May 27, 2012 #1

    Head in the clouds

    Head in the clouds

    Head in the clouds

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    The 'designing a new ultralight' group on the 'A challenge to you all' thread in the General Experimental area need to know what configuration of aircraft most people would like to have, if they built one, please let us know your preference. Thanks

    If you choose other please let us know your thoughts on the 'Challenge' thread
     
  2. May 27, 2012 #2

    StarJar

    StarJar

    StarJar

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    Wow, 2-2-2-2. If I wanted this much excitement I'd go to the horse races!
     
  3. May 27, 2012 #3

    Sir Joab

    Sir Joab

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    I vote Biplane because I'm building a high-wing already. :)
     
  4. May 28, 2012 #4

    delta

    delta

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    Blended wing delta lifting body.
     
  5. May 28, 2012 #5

    deskpilot

    deskpilot

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    Had no choice o this one seeing as I'm designing a Staggered Biplane.

    Delta, Your choice would surely come under mid-wing, if you could make it an "utralight'. The only other 'popular' design I can think of is a parasol. Not high wing in the normal sense.
     
  6. May 28, 2012 #6

    autoreply

    autoreply

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    A quadwing.
     
    Sir Joab likes this.
  7. May 28, 2012 #7

    ultralajt

    ultralajt

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    My sudden thought:

    Ultralight... so, to be real light, best option is strut braced high wing.
    Aluminum structure and torsion skin ahead of wing spar, and aft of the wing spar fabric covering..including ailerons and flaps.
    Something like that:

    hoopper2.jpg

    Oh, now you want to fly fast!?... Well, configuration from drawing above will be not so good for fast flying... then a l0ow wing ful composite would be better, but also more expencive.

    Mitja
     
  8. May 28, 2012 #8

    steveair2

    steveair2

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    Thats a nice concept Mitja. Similar to the Phantom X-1 with aluminum wings and stabilizers. I like it.
     

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  9. May 30, 2012 #9

    Head in the clouds

    Head in the clouds

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    At first I really thought you had taken a photo of one of our members' planes. It is virtually identical to this. I will ask him to send a photo for me to post here. This design was popularised by Colin Winton (father of Scott Winton of Facet Opal and Sapphire fame) in the late 1970s/early 1980s. It was called the Winton Jackaroo (Cowboy). Originally it didn't have any fairing, windshield or cabin and was taildragger but several people converted them to look like this.

    They were framed from 4"x3" (100x75) box section aluminium tube about 5/64 (2mm) wall thickness. They were all overweight for Pt103.
     
  10. May 30, 2012 #10

    litespeed

    litespeed

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    I reckon the Sapphire idea was pretty good as far as having a engine behind you. and none of the drawbacks of a high speed prop in front and a motor above.


    Awesome visability and very Vampire like.
     
  11. May 30, 2012 #11

    litespeed

    litespeed

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    But if we could hav a Opal with our unlimited speed regs in Oz- thatss the shizzzzzzzzzzzz
     
  12. May 30, 2012 #12

    ultralajt

    ultralajt

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    This design was mine (virtual reality design excercise) and you can see more about that design in my old website (click!).



    Mitja
     
  13. May 30, 2012 #13

    topspeed100

    topspeed100

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    I'd go for an AR 20 at L/D 50:1..sorta lifting body with wing...and enuf area to go fast with solar power accompanied with muscle power at 40 000 ft ( I have gone nutz with the sun power...as you can see ). But at the moment I want a 1/4 scale model of it with 40 kw engine running twin props at the rear with seats for two..with possible 17 m2 experimental solar panel test area on it ( producing 4.5 hp )...spanning 16.25 m.

    Sorta like this in double size, but still not like it...with props at the rear side. http://www.twitt.org/SAE_Aerodesign_Wing.html
     
  14. May 31, 2012 #14

    Head in the clouds

    Head in the clouds

    Head in the clouds

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    Sorry Mitja, I wasn't suggesting that you copied it.

    What I meant was that it's a good example of parallel development. Where a design is good and logical, more than one person will arrive at it over a period of time. And there is no simpler or stronger solution to the highwing structure than that series of triangles.

    And that's a great website you have mate, you've made some nice projects, well done! I like the PPG powerpack/sledge/frozen lake! :roll:

    Alan
     
  15. May 31, 2012 #15

    Head in the clouds

    Head in the clouds

    Head in the clouds

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    Yes I like pushers too, building one now but have gone twin boom and very proven prop. I have a few Sapphire hours and it's a lovely machine to fly but I've also repaired two where the tailboom was 60% severed. Gladly both pilots got them down safely but I have an enduring fear of wood props and homebuilt psrus running near pencil tailbooms and elevator pushrods. I made a prop-cutter for my Drifter but always had a slight distrust of whether even that would work if it had to.

    Working on a tailless design now too :gig:
     
  16. Jun 1, 2012 #16

    BDD

    BDD

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    Low wing for ease of getting into and out of the plane and visibility and the possibility of staying away from the prop in the process. The problem is a roll over structure and weight of a cantilever wing. Otherwise strut braced high wing which also has a natural roll over structure built-in and a lighter wing.
     
  17. Jun 9, 2012 #17

    litespeed

    litespeed

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    Ignoring the beaut little Sapphire or Opal by Winton-

    For aesthetics and sheer safety, I like a mid wing or low wing with a engine out front and some crush zone that does not use the pilot. I just don't like engines in proximity to my face or behind my head.

    Nor do I like using my legs as crush zones. I know the speeds are lowish but bodies are very fragile.
     
  18. Jun 10, 2012 #18

    Sir Joab

    Sir Joab

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    Just another plug for the Biplane configuration: Each wing would be much smaller when taken off for transportation/storage. Might be nice to make it fit in the back of a pickup with a canopy without anything hanging out.
     
  19. Jun 10, 2012 #19

    PaulS

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    The high wing is easy to make stable, easier to build in one piece and attach, and it has more room for flare on landing making touch-downs slower and safer? (You can come in steeper and flare to a stall and you can see the ground while you do it.)
     
  20. Jun 25, 2012 #20

    gordonaut

    gordonaut

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    I agree with this 1000 percent...
     
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