Profile image

Never Built Challenge

4,675 RepublicOfCursedPlanes  4 days ago

My 3k challenge, like I promised!

Anyone that sees this challenge, please spotlight it, upvote it or tag your friends! Thanks!

Hello all, and welcome to my first ever challenge.

Your task: make a plane that was "never built".

By "never built", I mean that:

- the plane was designed by a REAL company (e.g. Boeing, Lockheed, Convair)
- renderings, models or even prototypes of the plane were made
- the project never made it to mass production, was cancelled, and does not fly anymore.


- The plane must be a successor to this post.

- All mods EXCEPT for XML modding and Fine Tuner are banned.

- The plane must fulfil the criteria of "never built" as listed above. ^

- It must be an aircraft (helicopters are ok).

- It must NOT be an ONGOING concept; the plane must have already been cancelled (planes like the Flying-V and Airbus Zero-E are thus not allowed)


- Originality (Have I heard of this before? Does it interest me? Does this plane already exist on 10 points
- Looks (How good does the plane look from the outside, or if it has interior, the inside? Does it look like the original aircraft?) 15 points
- Performance (How well does it fly?) 15 points
- Features (Does it work like the original aircraft?) 5 points

Total: 45 points

Highest points wins the challenge!


20 February (i can extend the deadline though)

Tips to Help You

If you don't know what to build,

  1. scroll down to my list of examples below

  2. go to your browser and type never built planes or something like that

  3. go to YouTube channels Mustard or Found&Explained. They have many videos on these "never built" planes.

Examples of Well-Known "Never Built" Planes

  • Junkers Ju-287 (designed as a bomber, plans were captured by the Allies before it could start production, 4 prototypes built)

  • North American XB-70 (designed as a long-range supersonic bomber, 2 prototypes built, project cancelled due to rise of ICBMs)

  • Avro Arrow (Canadian fighter jet built to intercept Russian bombers, prototypes built, cancelled due to rise of ICBMs)

  • Martin P6M Seamaster (seaplane nuclear-powered bomber, prototypes built, project cancelled due to rise of ICBMs)

  • Baade 152 (East German airliner, prototype built, cancelled because the Soviets preferred Russian aircraft)

  • CL-1201 (ABSOLUTELY MASSIVE nuclear-powered cargo plane that could carry 1000 soldiers at one go and have F-4s dock on its wings, obviously never built)

  • Tu-334 (Russian airliner, 2 prototypes built, cancelled in favour of other Russian airliners)

There are many more concepts that are "never built", go do some research and find them! (use the tips I gave above ^) Remember, the less well-known the plane is, the more impressed I'll be!

Good luck and happy building!

Credits to Found&Explained for the title image and the idea of "never built" planes.


General Characteristics

  • Successors 8 airplane(s) +196 bonus
  • Created On Mac
  • Wingspan 35.1ft (10.7m)
  • Length 8.8ft (2.7m)
  • Height 1.6ft (0.5m)
  • Empty Weight 986lbs (447kg)
  • Loaded Weight 5,074lbs (2,301kg)


  • Wing Loading 15.9lbs/ft2 (77.9kg/m2)
  • Wing Area 318.2ft2 (29.6m2)
  • Drag Points 86


  • Number of Parts 3
  • Control Surfaces 3
  • Performance Cost 29
  • Log in to leave a comment
  • Profile image

    Just updated the criteria for what a “never built” plane is to make it more specific; it now also says that the project must have been cancelled. The examples above still fulfil the criteria.

    Pinned 3 days ago
  • Profile image

    Almost forgot lol

    (updated) Prizes

    Consolation (2 prizes): 1 upvote each
    3rd: 7 upvotes
    2nd: 10 upvotes
    1st: 15 upvotes + spotlight

    (if anyone's confused, I'm upvoting the winners' last 7 or 10 posts, not making alts to upvote stuff)

    Pinned 4 days ago
  • Profile image

    @Mastereldo @AlbertanPlaneMaker @SimpleplanesJP11 @NoblePlanesLTD @JJsimple @CR929thenewSPplayer
    (just tagging everyone i know here)

    Pinned 4 days ago
  • Profile image

    If you're joining this challenge, please upvote it so that more people can see this. Thanks!

    (also so that i know who's actually joining the challenge)

    Pinned 4 days ago
  • Profile image

    If you have any questions, ask me here. I will try my best to answer any questions you have.


    (i only know english and chinese btw)

    Pinned 4 days ago
  • Profile image

    @Kingachuuu yes

    15 hours ago
  • Profile image

    Can I make an xp-50 or xp-55?

    +1 16 hours ago
  • Profile image

    @RepublicOfCursedPlanes darn. Okay!! No worries dude! 😂

    18 hours ago
  • Profile image

    @TheSonOfThunder thank you so much!

    18 hours ago
  • Profile image

    @TheSonOfThunder even though not many planes were produced, it still got beyond the prototype stage, so it can’t qualify, sorry

    +1 18 hours ago
  • Profile image

    And here you go, bro! You deserve it! Running challenges is tedious, but when successful, super fun. And you look like you have one right here

    +1 20 hours ago
  • Profile image

    Could I submit my in-the-works YFM-1A Airacuda here? I think about 16 were built, but they were all scrapped and none remain, it never got into mass production

    20 hours ago
  • Profile image

    First ever challenge: 46 upvotes, 13 spotlights, 6 submissions, and it's only been 3 days
    This has surpassed my expectations to a level I could never have predicted. Thanks for all the support!

    +1 yesterday
  • Profile image

    @okand sorry what?

  • Profile image

    @RepublicOfCursedPlanes ok

    2 days ago
  • Profile image

    @Emuoverlord sure, just remember to follow the rules

    2 days ago
  • Profile image

    @RepublicOfCursedPlanes oh ok

    2 days ago
  • Profile image

    @CR929thenewSPplayer yes
    also the abbreviation for “I don’t know” is IDK, not IDN

    2 days ago
  • Profile image

    Can Vickers Swallow be allowed (IDN what kind of plane it Vickers Swallow is, I only know it was cancelled and it can be used by military and public (and yep supersonic)) @RepublicOfCursedPlanes

    2 days ago
  • Profile image

    Can i join

    2 days ago
  • Profile image

    @Rick09 besides your submission, there are already 3 other builds; go check the list of successors to this post

    2 days ago
  • Profile image
    105 Rick09

    Can't wait to see what other people made

    2 days ago
  • Profile image
    106k WinsWings

    Great thought about this challenge. I ran out of my spotlight capability for today but will do it once I can.

    3 days ago
  • Profile image

    @RepublicOfCursedPlanes L

    3 days ago
  • Profile image

    @ChronicMotors no, sorry

    3 days ago
  • Log in to see more comments