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Funky trees ground effect!!!

2,310 Erebos  4.7 years ago
161 downloads

If you dont know what the Ground effect is or how it works

>click here<


Example crafts:

Setup:

  • Save the engine as a SubAssembly

  • NO WINGS WITH ENABLED WING PHYSICS EXCEPT VERTICAL STABILIZERS AND NO CONTROL SURFACES ON THEM!!

  • Place the engine at the CoM of your craft and make sure it gets enough air

  • ((log(-AltitudeAgl+Wingspan+1, 1.025)*1) * abs((TAS * 3.6)/100))*0.014635
    This is the coding of the input. When the wingspann of your ekranoplan is for example 30m you have to change the code to
    ((log(-AltitudeAgl+30+1, 1.025)*1) * abs((TAS * 3.6)/100))*0.014635

  • Insert the weight(in Kg) in the powerMultiplier of the engine

  • Ad an gyro which is strong enough but not too strong and insert in the Yaw input Yaw*TAS

  • On bigger ekranoplans you want these input seperated engines to lift it out of the water and once this is done they are being shut down

  • It is working on normal planes too but I cant recommend doing it.
    But when you do it anyways I advise to ad another 0 in the max of the input controller, because they are not designed to maximise the ground effect. Of course you can forget about the wing and gyro stuff then.


About the function:

I created the function >here<. If you are more interested in it I advise you to get the app and open it there.


Other ways for ground effect:

  • Ground beffect exists for heli props too. Maybe someone is motivated enough to get it working with this way.

Some more inportant stuff:

Bug reports in the comments pls!
Questions too!
Its free to use but pls give credit and ping me when you created a craft with it.


Yaay u reached the bottom

Enjoy >.<

Spotlights

General Characteristics

  • Created On Android
  • Wingspan 1.6ft (0.5m)
  • Length 7.9ft (2.4m)
  • Height 3.5ft (1.1m)
  • Empty Weight 595lbs (270kg)
  • Loaded Weight 595lbs (270kg)

Performance

  • Power/Weight Ratio 5.663
  • Wing Loading 439,839.3lbs/ft2 (2,147,483.6kg/m2)
  • Wing Area 0.0ft2 (0.0m2)
  • Drag Points 385

Parts

  • Number of Parts 4
  • Control Surfaces 0
  • Performance Cost 14
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  • Profile image

    @Erebos OK

    3.5 years ago
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    2,310 Erebos

    @MuizTheRailfan try to increase the *1 after log(-AltitudeAgl+Wingspan+1, 1.025) in small steps until it works

    3.5 years ago
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    @Erebos yes

    3.5 years ago
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    2,310 Erebos

    @MuizTheWeeb have you added the wingspan in the input?

    3.5 years ago
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    @Erebos nvm, for some reason your GEV engine Didn't work at all. How to fix it?

    3.6 years ago
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    2,310 Erebos

    @MuizTheWeeb no, unless they are angled slightly so they provide lift too but then it should not really matter either if the thrust of the prop engines isnt stupidly strong

    3.6 years ago
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    @Erebos I am currently making a propeller engined Ekranoplan, does maxRpm also have to be filled in with the Ekranoplan weight number?

    3.6 years ago
  • Profile image
    60 Jakee

    @Erebos also I do not know what you mean by "unlisted version"

    3.6 years ago
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    60 Jakee

    um... this is the link we are on now...

    3.6 years ago
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    2,310 Erebos

    @Jakee if you send me a link with an unlisted version of it, I can make it for you

    +1 3.6 years ago
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    60 Jakee

    WHY WOILL IT NOT WORK

    3.6 years ago
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    67.1k SnoWFLakE0s

    @Erebos
    .
    Exponential functions exist. It's you wgo hasn't looked hard enough for them. They're done through pow(a, b).

    Given that you can manipulate a logarithm, I think you also realize that nth root functions are in actuality exponential functions. So there you go, everything you needed... From exponentials to nth root functions.

    One note on text formatting with the code style formatting option for your system... You've used a character that it doesn't support. Try to fix that, else people can't copy / paste. I'm being mean here, but run through the spelling once more.

    +1 4.7 years ago
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    12.1k dINE

    Plz tag funky trees

    4.7 years ago
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    13.9k ChrisPy

    @SledDriver whoops just realized

    4.7 years ago
  • Profile image
    2,310 Erebos

    @SledDriver ok thx

    4.7 years ago
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    197k SledDriver

    @Erebos Yes, but if you want people to actually notice your post, you should post the aircraft as public, then link to the engine. A single yellow engine pointing down doesn't exactly catch the eye.

    4.7 years ago
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    2,310 Erebos

    I have example crafts at the top of the discription @SledDriver

    4.7 years ago
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    197k SledDriver

    @Erebos Nice work, but just a suggestion, it would be much better if you actually built an aircraft demonstrating it.

    4.7 years ago
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    197k SledDriver

    @ChisP When tagging, you need to use the exact username, here you added a space so I wouldn't get a notification.

    4.7 years ago
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    2,310 Erebos

    @ChisP thx

    4.7 years ago
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    13.9k ChrisPy

    @Sled Driver

    4.7 years ago
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    13.9k ChrisPy

    Very smart indeed

    4.7 years ago