how do i make a plane stable?

@sentinelaerospace Ah ok

@GSpace it was the engines, i messed up on the XML and they were ten times more powerful than anticipated

Sometimes the engines are two powerful or you need to make sure the tail has no fuel in. That usually works for me

good news, its now stable at any speed less than hypersonic

Make sure your CoM is slightly behind and slightly above your CoM. Look at other people’s planes to learn from their style of building.

@SoulBlazer ok, sometime early tomorrow, around 8:00 AM pacific time

Also, what @SoulBlazer said. It would be much easier if I could see what I was working with.

@sentinelaerospace edited ion engines, or regular ion engines?

@HermesEngineering ok, if it helps you i am modifing the Avalon M1 to be space capable with ion engines

Also, make sure you have vertical stabilizers. They help a lot.

I had this problem before.

1. Try inverting your airfoils.

2. If that doesn't work, make two control surfaces, one for pitch, one for roll, and invert the pitch control surfaces.

3. If that doesn't work, shift the wings back and run through 1 and 2 again.

@Arstotzka no, unless i am getting the indicators mixed up, blue is lift right?