# Gazebo issues with standard VTOL

**URL:** <https://discuss.px4.io/t/gazebo-issues-with-standard-vtol/7650>\
**Category:** Uncategorized\
**Created:** [August 29, 2018, 7:35am UTC](https://discuss.px4.io/t/gazebo-issues-with-standard-vtol/7650 "2018-08-29T07:35:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![DavidM](https://discuss.px4.io/letter_avatar_proxy/v4/letter/d/71e660/32.png) [@DavidM](https://discuss.px4.io/u/DavidM)\
**Post date:** [August 29, 2018, 7:35am UTC](https://discuss.px4.io/t/gazebo-issues-with-standard-vtol/7650/1 "2018-08-29T07:35:09Z")

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Hello,

I’m having an issue with Gazebo using the VTOL air frame. Unless I re compile everything every time then the model seems to loose all normal behavior. I’ve attached a screenshot of QGC to show this.

It doesn’t happen to other air frames, just standard VTOL and it’s getting very time consuming having to re compile everything every time.

It works fine on the stable branch so I’m assuming it’s one of the changes made to one of the .cpp files in sitl\_gazebo/src?

Thanks for any help!

l

 ![](https://discuss.px4.io/uploads/default/original/2X/1/192c3c0116b8a30b218565c236fdedf99e7f2f3d.png)