After our Christmas experiment of getting the E-flite Convergence flying autonomous missions with PX4 we’ve now gone one step further and implemented a rate controlled acrobatics mode in fixed-wing. This allows you to fly the Convergence in the same 2 modes which the original flight controller provides (Stabilized and Acro). In Acro mode (rate control, also known as gyro stabilization in classic RC) you benefit from unconstrained control over the aircraft but at the same time it will compensate external influences such as wind which gives you a truly flying on rails feeling!
Support will be available in PX4 soon (pending pull-request). For a short glimpse of what's possible check out the video on our news page: http://uaventure.com/2017/02/12/airrails-enables-fixed-wing-acrobatics/