[ros-users] Gazebo Issue: Fall Into the Sky

John Hsu johnhsu at willowgarage.com
Fri Jul 9 18:10:10 UTC 2010

Hi Gavin,
Are you on boxturtle or cturtle?  what does your model look like?  would you
be able to share it?

Without more details it might be a number of things.  One possibility is
that the collision body is intersecting the ground plane on startup.  One
way to debug it is to start gazebo paused (you can click on the pause button
before spawning your model), and display bounding boxes under the "view"
drop down menu.


On Fri, Jul 9, 2010 at 11:01 AM, <gavin at mc-carter.com> wrote:

> Hi everyone,
> I'm just getting used to Gazebo so excuse me if it's something simple I've
> overlooked.  Here's what's happening: I start up Gazebo using the command:
> roslaunch gazebo_worlds empty_world.launch and spawn my model afterwards.
> What's happening next is really strange. When my model appears it falls for
> half a second, hits the floor and then it shoots upwards at the camera. When
> I pan around, my model is up in the "sky" just floating and rotating
> around.  I have the line " <turnGravityOff>false</turnGravityOff>" in my
> urdf, but that's obviously not keeping it from shooting into the sky.
> Assistance would be greatly appreciated.
> Thanks!
> Gavin
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