Ship flipping when I enter Mun orbit.

[fabiofonsv]

I'm trying to send a rover to Mun. Everything is going ok, until I establish a Mun orbit.

When I'm in a "pass trough" trajectory it goes ok,

the moment the orbit become elipsal, the ship keeps turning all around when I fire the rocket.

It's like it is sliding because of the acceleration.

The ship is only the rocket for landing and the rover.

Look, the exact moment it start turning:

Edited July 28, 2015 by fabiofonsv

[fabiofonsv]

Turns out it was something to do with the engine gimbal, i disabled it and used the RCS to navigate.

But I still want to know, if possible, what was going wrong.

Edited July 28, 2015 by fabiofonsv

[Randazzo]

I'm trying to send a rover to Mun. Everything is going ok, until I establish a Mun orbit.

When I'm in a "pass trough" trajectory it goes ok,

the moment the orbit become elipsal, the ship keeps turning all around when I fire the rocket.

It's like it is sliding because of the acceleration.

The ship is only the rocket for landing and the rover.

Look, the exact moment it start turning:

http://i.imgur.com/nIrJmDPl.png

The pic is too small for me to see where the engines are. I think I see one 1.25m reaction wheel on there.

If you're not out of power (which you aren't) I'm guessing the craft has an offset center of mass and doesn't have enough control authority to counteract it.

[Claw]

I'd agree there's a good chance the offset Center of Mass could be causing you problems. It might not have been happening earlier because you've reached a fuel state where the CoM has shifted enough that the engine gimbal and torque wheel can't compensate anymore. Now that some fuel is burned off, the CoM might be moved enough that firing the engines causes too much torque.

Cheers,

-Claw

[micha]

Is it actually the rocket flipping all over the place, or the camera? When you enter an orbit your camera mode automatically changes; the same happens when you go from orbital to sub-orbital flight.

[fabiofonsv]

That should be it, when I emptied the fuel, than the CoM got a little hard to control.

Thank you, guys.