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Ultralight: Proof of concept

235k jamesPLANESii  4.6 years ago
604 downloads

This looks bad and is low effort. But that’s not the point of this.

Idk about you peeps but I personally haven’t ever seen an ultralight in this style that actually uses the same princaples on how the real life versions of these manoeuvre.

Let me explain how this flies:

First, you want the wing to be made in a style that encourages the nose of the plane to pitch up. This way, the plane can maintain pitch with the CoG being quite far ahead of the CoL. I’ve angled th back section of the wing by 5 degrees, and I’ve made the wing out of multiple sections length wise for stability.

Second, you want the CoM of the craft to be quite far forward. Also, you don’t really want it too top heavy. Ie, make your wing light. I think that helps with the weird torque pitching that happens when you change your pitch input.

Third, you want to have a bit of encouragement for the roll. When you angle the wings, the plane slips, and you can take advantage of this by adding negative dihedral, or, just angle your wing tips down. These also act as tails.


Just a couple of flying tips (for this anyway)

  1. Taking off with this plane is a pain in the butt... because SP physics lol. don’t pull up until you reach about 60mph and then slowly start pulling up.
  2. Pulling back too far while on a high power setting can make the plane flip and all that weird stuff. Just pitch all the way down and it is instantly fixed.
  3. To lessen the pitch issue with the camera while you’re in cockpit view, I added a camera that’s placed on a rotator set to AngleOfAttack, but that doesn’t seem to work so well... so someone else can think of something there.
    Edit: I broke it. That’s why it doesn’t really work. XDD Just set the range to 1 and speed to 1 using overload.

This craft is super basic, I built it and worked out the bugs in about 45 minutes, but hopefully it helps you guys with how to build an ultralight like this before I make a proper one! :D

General Characteristics

  • Created On iOS
  • Wingspan 40.7ft (12.4m)
  • Length 15.8ft (4.8m)
  • Height 17.7ft (5.4m)
  • Empty Weight 2,613lbs (1,185kg)
  • Loaded Weight 3,011lbs (1,366kg)

Performance

  • Horse Power/Weight Ratio 0.083
  • Wing Loading 14.3lbs/ft2 (69.7kg/m2)
  • Wing Area 211.0ft2 (19.6m2)
  • Drag Points 1688

Parts

  • Number of Parts 32
  • Control Surfaces 0
  • Performance Cost 241
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  • Profile image
    31.2k SlimSimpy

    I once made a glider like this that consisted of just a cockpit and a few wings.... don't ask how it all held together or even connected, but it is perfectly balanced and can fly at any angle given without pitching up or down.

    4.6 years ago
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    15.0k ChamDel78

    Freaking planes??!!

    4.6 years ago
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    16.4k ThePrototype

    I had a few of my old mechanical craft use controls like this, but Eternal is right about the COM/COL issue. But still, it proves the point.

    4.6 years ago
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    You didn't quite get the working principle of an ultralight trike. CoM should be very close to CoM. That's why the wing doesn't act like an elevator, only rising the tail. It pulls the CoM up, not just the rear end.

    +2 4.6 years ago
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    69.4k Chancey21

    I think this would work better at a far lower wing loading, this is basically a powered hang glider, and hang gliders have really really low wing loading. This would probably also fix the problem of unstable control at different speeds

    +1 4.6 years ago
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    1,555 Philip1214

    i thought it was one of those gay meme creation again

    4.6 years ago
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    I might have improved your design: klik
    Also my hang glider: T

    4.6 years ago
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    Interesting! I'm currently working on getting fixed wing Hang gliders to work in SP while learning to design them irl. I recon it's possible... but not simple...

    4.6 years ago
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    15.0k ChamDel78

    HeckGood

    4.6 years ago
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    Not a bad prototype. Can’t wait to see you make a weight shift trike.

    4.6 years ago
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    Yeah lol. Try waiting until you reach 70mph and then slowly pull up @L3dg3ndary

    4.6 years ago
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    11.3k Shadodoom

    So I was just trying to take off, and accidentally went on my back. One second later, I go yeeting under the map at 546,145 mph. Bruh.

    4.6 years ago
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    17.0k Kangy

    Dope first btw

    4.6 years ago