My plane constantly pitch up pls help me

[Babouchkha 771]

Hello,
I was building a jet and during testing i figured out it was constantly pitching up, i tired to move centre of mass, adding downforce wing (wich makes it even worse). I'm out of idea please help me it is driving me mad

[Babouchkha 771]

here is the link : https://steamcommunity.com/sharedfiles/filedetails/?id=2604327454

[muhammedexplosive911]

use a gyro to control ur pitch, yaw and roll, it makes things a lot easier.

[Ra-Ra-Rasputin]

Originally posted by ahzenfam:

use a gyro to control ur pitch, yaw and roll, it makes things a lot easier.

For planes? Absolutely not, unless you make your own. That's a helicopter gyro.
They need actual TLC.

[Ra-Ra-Rasputin]

Here you go:
https://steamcommunity.com/sharedfiles/filedetails/?id=2604409910

The usual suspect, your center of thrust is well below the center of mass causing upward rotation force, and nothing to correct it.

Also your tail is way too short, it can impart no pressure at all on the plane with how close to center of mass it is. I fixed it for now with some black magic, but planes are longer than they are wider for a reason.

[Babouchkha 771]

Originally posted by Ra-Ra-Rasputin:

Here you go:
https://steamcommunity.com/sharedfiles/filedetails/?id=2604409910

The usual suspect, your center of thrust is well below the center of mass causing upward rotation force, and nothing to correct it.

Also your tail is way too short, it can impart no pressure at all on the plane with how close to center of mass it is. I fixed it for now with some black magic, but planes are longer than they are wider for a reason.

Thanks ! I appreciate your fix (I find that little rudder haha), I will take your advise and lengthen the tail and move the exhaust up a bit.

Just to be sure : the center of thrust is defined by the exhaust ?

[Grizzly]

Just to be sure : the center of thrust is defined by the exhaust ?

In general, yes. There are a lot of calculations not taken into account by the game but that's a good general rule of thumb.

[Ra-Ra-Rasputin]

Originally posted by Babouchkha 771:

Thanks ! I appreciate your fix (I find that little rudder haha), I will take your advise and lengthen the tail and move the exhaust up a bit.

Just to be sure : the center of thrust is defined by the exhaust ?

Exhaust (center of thrust) compared to the center of mass, yes.

It works like this

x = your plane
[ ] = your center of mass
O = Your center of thrust
<--- = Where your plane goes

                        xxxxx          xxxxx
          /\         xxxxxxxxx[ ]xxxxxxxxxxx
           ¯*'----        xxxxxxxxxxxxOOO
               

Could i have done this much more easily in MS paint? Yes.

[Babouchkha 771]

Lmao I see thanks, so i need to put weight block under the plane or move up the exhaust a bit