Profile image

Updated Landing Gear program for 1.9.203 (plus some other experimental functions)

9,445 vcharng  4.7 years ago

I have completed the new version of the Landing Gear Demonstrator
It also comes with a new experimental function: overspeed damage model.
Initially I wanted to make the landing gears break away when landing gear is down and overspeeding, but the complicated landing gear setup of the Ju 288 doesn't work well with the detacher (it will break even when on the ground)

So instead, the aircraft loses its wingtips when reaching 550 km/h (which is kinda difficult to get in this aircraft, you need to dive at full speed).

Before the actual release of 1.9.2 I will experiment more functions on this Ju 288, so the final version will be full of new technology.

  • Log in to leave a comment
  • Profile image
    9,445 vcharng

    @asteroidbook345 I think this is doable, but the folding main gear would be a pain.

    4.5 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 I need to take a look at a video or something... understanding a landing gear just by words is too risky.

    4.5 years ago
  • Profile image
    663 Ja380

    @vcharng I just used all 3 of your demonstrator rotators and just adjusted the "0.25" in their input functions as you suggested before, and it all works like a gem! Thanks for all your help, much appreciated!

    4.6 years ago
  • Profile image
    9,445 vcharng

    @Ja380 That video looks almost identical to my design though (no way anyone would open the front door and retract at the same time.
    It seems that the only thing different is that the rear door closes at the same time with gear retract.
    So try this, just copy the landing gear actuator input to the rear door, and try again.

    4.6 years ago
  • Profile image
    663 Ja380

    @vcharng Here's my desired time table:

    T= 0: Landing Gear Up commanded
    T= 0 to 6: Landing gear retracts
    T= 0 to 3: Front LG doors open up
    T= 6 to 12: Back LG doors retract
    T= 13 to 16: Front LG doors retract

    Here's a video of what I'm looking for, more or less. If you can figure out something more accurate to the video, you can disregard my time table. Thanks again.

    Link: https://www.youtube.com/watch?v=uSTSNe0xc4k (skip to 2:30)

    4.6 years ago
  • Profile image
    9,445 vcharng

    @Ja380 can you draw a timetable for your desired landing gear operation?
    For example:
    T=0 means the instant when gear up is commanded.
    T=0 to 0.5 door open
    T= 0.5 to 1.5 landing gear retract
    T= 1.5 to 2 door close

    I think this is more or less how this one works, what is your desired timetable?

    4.6 years ago
  • Profile image
    663 Ja380

    Hi again, sorry to be such a bother about landing gear. I've read the content below and totally understand that asking so many questions can be a nuisance. Regardless, I'll try to keep it as brief as possible. I haven't been able to solve my issue with the solution you provided to be before, where you suggested to just decrease the "0.25" within the smooth function.

    I guess my goal is to increase the length of time that the doors stay open (from 2 to 6 seconds in total) before closing up again. I tried what you suggested and it didn't work properly, as the LG doors would either close too soon or open too late (running into the landing gear itself as a result).

    Do you have any suggestions? And would it help if I just uploaded my model for you to test out and play around with? Thanks once again for everything.

    4.6 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 Huh? how is this related to that?

    Sincerely, having to handle these landing gear questions everyday is getting me tired, you know? I have my own projects, my own troubleshooting, my own life. These landing gear tutorials are meant to be a basic introduction, not something that makes me the next "fancy landing gear mentor".

    But during the past month, I was tagged by many people for their landing gear problems here and there, and then I make a suggestion, and then they say something like "no, this doesn't solve my problem, try again".

    This has to end somewhere.

    4.6 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 stacking rotators would make the order the same on gear up and gear down.
    Like:
    rotate-> fold (gear up)
    un-rotate-> unfold (gear down)

    4.6 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 I think if you use * 2 it would not sequence correctly, it would only make that part rotate quicker.

    Also *2 should be inside the clamp01 function, or you will mess up the turning angle.

    4.6 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 let me see what your input is and what you want

    4.6 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 Yeah, it usually would need actual trial and error to find whether an input actually works

    4.6 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345 C-5's LG rotates before folding, is that what you're trying to say?
    clamp01((smooth(LG, 0.25) - 0.5) * 2) for folding
    clamp01((smooth(LG, 0.25) + 0.5) for rotating
    not including gear bay door.

    4.6 years ago
  • Profile image
    9,445 vcharng

    @goboygo1 I was talking about the bending right before breaking. It's beyond recovery point and should be irreversible.
    Making wings flexible in normal use is another issue, and it would have some in-game issue (collision model management, control surface distortion, etc)

    4.7 years ago
  • Profile image
    28.3k goboygo1

    @vcharng wouldn't that be realistic though? Most airplanes wings are visibly flexible.

    4.7 years ago
  • Profile image
    9,445 vcharng

    @goboygo1 The problem of using rotator is that it would be reversible. I.e. if I went to the verge of wingtip breaking and came back to normal speed, the wingtip would bend then "come back".
    I think I'll instead angle the detacher to make it come of with a spin

    4.7 years ago
  • Profile image
    28.3k goboygo1

    This is actually really cool! But it looks pretty unrealistic how they just pop off, maybe put them on rotators set to something like clamp01((TAS / "X") - 0.75) with X being a number that will need texting to determine. Then the wings would start to bend upwards before coming off.

    4.7 years ago
  • Profile image
    9,445 vcharng

    @ChiChiWerx @Numbers This is just a technology demonstrator, the full release version of this Ju 288 will be made with better detail and realism.
    Engine overheating (which was a real problem for Ju 288 IRL), landing gear damage (also), renewed control surface (already done)... etc.

    4.7 years ago
  • Profile image
    30.3k ChiChiWerx

    I have to say, I agree with @Numbers ...the tail is usually the first thing to go when an aircraft breaks up inflight.

    4.7 years ago
  • Profile image

    Lol warthunder

    +1 4.7 years ago
  • Profile image
    9,445 vcharng

    @asteroidbook345

    4.7 years ago