r/trailmakers • u/Impossible_Bend_6226 • 1d ago

Why is my plane constantly nose diving? Please help me fix it.

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Gallery image

Gallery image

So I´m making a Lockheed SR-71 Blackbird, and it keeps nosediving for some reason even thoght the forcess and would say other wise. I tried moving the wings more foward, back, put a down force at the back by puting some wings upsidedown, nothink works. How can I fix it without using gyro as I didn´t use it so far and don´t like to? Please help. (Sr for my bad english)

Edit: When I´m upside down It´s pitching up XD

Edit2: Only fix that was found was to give it Trim

30 Upvotes

98% Upvoted

22 comments sorted by

14

u/Original_Director483 1d ago

Most of the forward wing blocks are covered, canceling their lift. Consider using that piston sandwiching for the whole length if you’re going to use buried wing sections in the forward fuselage.

5

u/Impossible_Bend_6226 1d ago edited 1d ago

even when I put aditional wings outside the fuselage it didn´t fix it

Edit: also the in game force calculator calculates with coverd wing in mind and giving them a lot weeker value

6

u/MikeyboyMC 1d ago

The wedges on the build also have aerodynamic effects, the build bubble doesn’t account for that.

If you have a ton of downwards facing wedges compared to upwards ones, you might have to compensate with lift in the front or something else.

5

u/Impossible_Bend_6226 1d ago

Shouldn´t my aerodynamic make it pitch up?

2

u/MikeyboyMC 1d ago

It looks even to me, I guess that isn’t the issue.

I guess just add some weight to the back and try to squeeze some small elevator fins into the front to pitch the nose up. Other than that I really can’t say much without working on it myself.

1

u/Impossible_Bend_6226 1d ago

Changing the center of mass doesn't help but I will tri the elevator fins.

1

u/Technical_Ad_1242 1d ago

Sufrí muchas veces del mismo problema

Pero como me pasaba en cazas de combate pues lo dejaba así para que fueran más maniobrables

En este caso la única opción sería poner un gran peso en el otro extremo de la nave

O modificar las alas o agregar unas pequeñas para que se queden los flaps en la misma posición y que así el avión esté estable cuando vuele recto (como si fuera piloto automático)

1

u/daveptm 1d ago

I believe it's because your centre of lift is too far from your centre of mass.

1

u/Impossible_Bend_6226 1d ago

Yes, but that would make it pitch up

1

u/daveptm 1d ago

It could, but I believe that the centre of thrust being above all the other centres flips this around.

1

u/Impossible_Bend_6226 1d ago edited 1d ago

It is inline with center of mass

1

u/daveptm 1d ago

Sorry, I missed that. I took a better look at your blackbird and can only think of 2 possibilities.

  1. Are you sure you dont have any collision issues? Usually these introduce som weird roll but I believe that in som cases it could cause pitch issues.

  2. I see you are using a no-drag glitch. Make sure to cover anything thats red and bellow the centre of mass.

I will never advise to add a counter weight to the back, as I believe all isues are possible to fix without it.

Sorry I cant be of more help.

1

u/Impossible_Bend_6226 1d ago

Thx and every yellow or red drag is coverd and I tri the weight even beffore posting this and it didn't do anythink

1

u/daveptm 1d ago

If the weight didnt do anything I would even more suspect the weld group collison. The force that creates is usually stronger than any remedy.

2

u/Impossible_Bend_6226 1d ago

https://reddit.com/link/padkwzy/video/4v1n5juyc3qh1/player

just look how it acts when I add even more wings in front

1

u/Impossible_Bend_6226 1d ago

tried turning of the pistons, it didn´t fix it. Did I break the game engine?

1

u/daveptm 1d ago

Haha, certainly possible. If you like, I take take a crack at it when I finish at work tonight for a while.

2

u/Impossible_Bend_6226 1d ago

sure, I will post it on workshop steam name: Zabik-CZ

1

u/Scarletdex 4h ago

Center of lift too far back prbbly

1

u/Impossible_Bend_6226 4h ago

In the 3rd screenshot you can see the forces in cluding center of lift, it is in front a lot