I've been perfecting custom landing gears on my build, and I've noticed something weird. The landing gears work fine normally (there a slight yaw to the left during the take-off roll, because, re-sizable wheels). It even works under the condition produced in the cross-wind challenge. However, for reasons I cannot explain, the landing gears gain this weird loss of traction whenever I drop/fire ordnance (Rockets, Missiles, Bombs).
These are the conditions required to produce this bug
- All landing gears must be custom made (re-sizable wheels, rotators, shocks)
- The landing gears must be in a tricycle configuration (not tested tail-dragger)
- Re-sizable wheels must have suspension disabled
- The aircraft must be in the air prior to releasing the weapon
Upon touching down, the aircraft noticeably swerves and does a 360 shortly afterwards. This swerve doesn't happen if I don't release/fire any of the payload. I don't know why this happens. It's like the weapons leave behind some residue drag, or some properties of the re-sizable wheels changes.
@xiaofootball Yes I do. I know that plane dynamics is changed strangely by ordnance. Releasing it after having it is still somehow different from not having them at all.
I was just trying to solve the problem the plane is experiencing, that is, landing instability.
@vcharng You raise a few fair points about creating more stable landing gears. However, the main issue here is how releasing/firing ordnance causes the re-sizable wheels to basically bug out. Try landing the plane without releasing ordnance and landing it once more after releasing ordnance. You should notice a more distinct swerve between the two conditions.
@xiaofootball I gave it a try.
1. suspension is too soft. You need harder and more damper or your plane would keep bouncing around.
2. sideway traction is poor.
3. As a pusher configuration your plane is born unstable, try to XML remove nosewheel braking action.
4. the nosewheel creates a natural asymmetry, try double wheel nosewheel . The asymmetry in landing gear would either cause the plane to spin out of control or cause you to over-correct the yaw.
I think given a few hours I should be able to make this stable, but perhaps you should try yourself.
Also this is why I don't use custom landing gear on turning wheels. They behave strangely. If everything fails try to use a stock LG on the nosewheel
@vcharng This is the plane I am working on:
https://www.simpleplanes.com/a/et8jRb/GD-01-Aegis-IV
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There's no problem with loading the ordnance. The plane will land and take-off normally. However, the problem occurs once the ordnance are released. The plane will swerve violently after landing. This also happens in other builds, besides my own, with similar custom tricycle landing gears.
@asteroidbook345 This sounds plausible. I wonder when is the next time a bug report could be submitted. This bug is seriously impeding with the way I play this game. I just wanted to take-off drop bombs/fire missiles, and land normally.
@xiaofootball Perhaps you should upload the plane and let us see what's happening.
it could be that you're loading ordnance too far outboard and causing the plane to be easily inbalanced.
@vcharng Enabling suspension on the wheels does even weirder things. My custom gears use shocks for suspension. The landing gears work fine under all conditions, even when there's cross-wind. It also works as intended when my build sustains battle damage, causing asymmetric drag and weight distribution. However, the problem occurs when I fire/release things like rockets, missiles, and bombs.
@DickBrazen Prepare for a world of pain. For reasons I can't fathom, you can't just attach wheels to your custom gears and call it a day.
@TheFantasticTyphoon @asteroidbook345 You guys might be on to something. However, my build has detachable fuselage parts (300~ Ib each) that when detached, does not affect the landing gears' performance. Detaching a pair of Boom 25, however, causes the swerve.
These two sounds fishy.
I have some occasions where resizable wheel with no suspension + landing after takeoff, causes the wheels to constantly bounce on and off the ground.
And obviously when the wheel is not on the ground you get no traction.
I would usually suggest having resizable wheel suspension plus another shock (i.e. double layer of suspension)
Screenshots of the gear and maybe of the swerve? I've still never made custom landing gear, though one of my stalled projects was going to have some.
A change in weight, maybe? Your centre of mass will be higher after dropping external ordinance and this could cause your aircraft to become unstable on the ground.