Planes get torn apart, flew perfectly well before

[rocket11]

Hello everyone,

So I'm having some troubles with my planes. In previous versions (0.23, didn't have time to fly planes in 0.24 and 0.25), my planes flew perfectly well, having no troubles midair. But now, it gets torn apart during their fligth, supposedly because of a structural failure between two parts of the fuselage (cockpit, fuel, cargo bay). I didn't change anything on my planes, except the wings, because the previous one were getting in the ground after the loading of the plane for the "launch" (but were still considered as being part of the plane). So what's the problem?

Also, my planes seem to take the entire runway for takeoff, even my lightest design, wich is unprecedented for this latter

Edited December 29, 2014 by rocket11

[Anquietas314]

We're going to need screenshots (showing CoM, CoL and CoT) to help you with specific spaceplane designs. It sounds like you might just be having backwards compatibility issues though; have you tried testing a fresh install and designing planes from scratch?

[Captain Sierra]

The intial symptoms sound like you're using FAR, but if your certain the install is stock, we need more info, specifically images.

[rocket11]

As I said before, two previous planes flew perfectly well before; I barely change something in term of CoM, CoL and Cot.

I made a plane from scratch; it was slow but it flew well just before the Big Rip

It's only a matter of when I reach a certain speed, a certain altitude OR even a certain time that my planes get ripped apart. I thought about a brutal movement, but it wasn't because it also get torn when I wasn't pressing any key

The intial symptoms sound like you're using FAR, but if your certain the install is stock, we need more info, specifically images.

Yes, I'm using FAR

[Captain Sierra]

Yes, I'm using FAR

That makes a WORLD of difference. FAR can (and, as you've found out, will) shatter aircraft due to aerodynamic stresses (but you probably already knew that).

Again, we need pictures with CoL and CoM visible to fully troubleshoot why FAR says you will not fly today.

[Anquietas314]

As I said before, two previous planes flew perfectly well before; I barely change something in term of CoM, CoL and Cot.

That doesn't change the fact we need screenshots! But if you're using FAR and this is new, check the change log of FAR - it probably added some new effect your plane can't handle.

[MarvinKitFox]

Hello everyone,

So I'm having some troubles with my planes.

Based on the screenshots you have provided, I have to say that I think the problem with your planes is that they do not exist.

[Wanderfound]

There have been big changes in FAR.

1) Wing weight/strength is now a tweakable. Default wings are very strong but very heavy.

2) SAS is destructively hypersensitive. You need a PID tuner; Kerbal Pilot Assistant ​has a good one.

[Streetwind]

Easy fix: activate Dynamic Control Adjustment (DCA).

This feature is special-made for keyboard inputs that lack the precision of an analog flight stick. It dampens your control input based on your current airspeed, with higher speeds meaning more dampening. As a result, even if you hit the keys as hard as you can, your plane won't exceed a certain amount of stress on the fuselage. In practical application, 99% of the time I cannot get my planes to break up even if I intentionally try to force it by diving at high speed into the thick lower atmosphere and then weaving about as if trying to dogfight... and that's with flimsy 0.3 wing strength. While it will easily pull high g's, it still keeps the marker outside the red zone quite reliably.

[rocket11]

Finally, screenshots are unecessary, because I just tought about updating FAR yesterday...

Now my planes are flying well again

Sorry for the inconvenience.