Why plane go boom?

@AverageJoe lol I pretty much tried everything. I started off with normal wings mirrored around the hub. That didn't work. I adjusted the angles. That didn't work. I checked the lift vectors, tried all the airfoils, tested different rpms/torque on the motor, etc, etc. I xml scaled the wings up and down(tiny wings made huge and huge wings made tiny) but that only made it worse. I only had one "successful" test with it, but that was caused by the scaled down wings breaking the game, and I uploaded that version of the craft if you wanna check it out. I think I might've just broken that particular craft by messing with it too much. I've had it happen before where I mess with something to make it work better and it just gets worse even when I try to change it back(especially in vizzy. I'll have 90% of a functioning program, go to add the last 10%, and suddenly none of the program works even after reverting to an older version...)

I just had a thought. On your propellers, what airfoil are you using? Are you using a flat bottom airfoil with the top of the wing forward? Or symmetrical? Symmetrical airfoil may explain the spin but no go. Also if you mirrored the propellers, the airfoils may be "opposing" one forward and one back so it would force the plane to go forward and backwards, canceling it's self out. Turning on the lift vectors may help to see the airfoil direction. @YaMomzBox420

cool

We need wobbly parts to give to Droods with decapitated limbs, Because our number one priority is to be as cheap as possible with our ”Test Droods”.

@Starborn too many physics 🙈 solution pinned 👍

@FelixFan1 it was aggravating for sure 😂 but I did get good at making changes to a model 😊. Kind of ironic if you consider the other game jundroo makes 🐒 about 5 hours and multiple set ups I eventually figured the less physics you use the more the game likes you and lets you go 🤷🏼‍♂️ So just do simple to get the vectors in the right places and hide it

@AverageJoe
Must’ve taken a while to figure out.

@YaMomzBox420 I've already got the workaround pinned, and it works like a charm. Just wait. Few more details and it's dropping... Already matching flight characteristics like the dedicated sims for it as if you flip off the fly by wire. Near scale weight, flight time, service ceiling, and can even do the trademark takeoff pose. Had it at 580 m/s (about mach 2) 450 meters off the ground, and I believe the engine was about the only thing I've had to "tinker" since the old wing and control is out

Interesting dilemma... I've been having similar issues myself. Planes just don't like to work for me even when I do everything right. Especially prop engine planes. Supposedly you can just use wings to make propellers, but nothing seems to work. Either the prop spins uselessly and I maybe get 1m/s acceleration if I'm lucky, or it invokes the Kraken and my plane ends up hypersonic within 5 seconds. No amount of adjustment or tinkering fixes it, despite the claims that "it's easy. You just make small wings and angle them about 45° off the hub, no tinker panel needed". I gave up after awhile and just went with a turbofan engine to save myself a massive headache.

I also have the ridiculous problem where I build a craft(usually a rocket or "missile") and because I put a single wing-like surface on it, the game suddenly decides it's an "airplane" despite clearly not having the control setup for that. I tried to make a UGM/RGM/AGM-84 (Turbojet powered sea skimming long range Anti-Ship missile with "wings" for stability and lift at lower speeds since it's subsonic), and the game refuses to let me fly it like a rocket which ruins it's ability to fly correctly. I even tried using a normal rocket engine to see if it was the Turbojet confusing the game, but that didn't work either...

Also, as a side note, if you want somewhat realistic looking wings without messing with the flight characteristics/controls too much, you can use the part shape tool to "flatten" a fuel tank and adjust the angles to have a wing-like cross section. You can make shorter wing segments and use the [add section] feature to extend the wing's length as you go without adding new parts or cloning plus you can adjust the size/shape/angles of each section all in one go. Now, place your "fake" wing on your craft and attach a "real" wing as close as possible. Using translate and rotate, you can hide the wing inside the "wing" to get a functional wing surface since the game doesn't apply lift to any parts that aren't "wings"(Technically a fuel tank will produce lift in the right situation, but it's a result of drag vectors, not an actual "lift" force like wings produce). Control surfaces might be hard to implement short of leaving the standard wing control surface slightly outside the trailing edge of the "wing" although it still looks kinda bad because of the body wing shape.

Near scale ceiling, speed and performance, yeah be light on the physics use and heavy on transparency, thing flies like it's meant to now 👏🏼

@FriendlyFin, I got it, pinned comment is the solution 👍 now it's just tuning in the controls at just under what's real because I don't want to code the fly by wire right now. Pretty solid now with easy input to the controls, just have to dial it back a little because slamming it one way or another the angle of attack goes up fast and it's over

i can’t help you
maybe redesign the aircraft

That's what it was. Had to go back to the poo looking ones, too many wings, or you just can't rotate a control surface mount 🤷🏼‍♂️

One main thing I did do after the first flight was put the control surfaces to servos, the put wings inside the surfaces. Probably need to go back to making it look like poo because the base control surfaces suck visually 🙈

Other than the shake and boom thing it's actually done. Flew 800 m/s on a test flight, no problem, ok fine tune the details and added maybe 12 more parts and now every flight is this

Possible part drag? It's only 264 parts, but a lot of tinker adjustment to check

yeah that happens with many of my crafts too
@ChalxAerospace

@Zenithspeed it can also happen because he is flying too fast in a thick atmosphere

if you have wings that have been made bigger to increase the lift, and then made smaller using tinker panel, scale them down normally then set size bigger with tinker panel. them generating too much lift for the physics engine might be the case for this bug.
another issue is that your craft may be too light, if this is the case then do the opposite and decrease the size and lift of the wings then scale them up with tinker panel.
if neither doesn't work, sorry, i can't help you, you'll have to wait for other people to respond.