AR Wing pro with Ardupilot and Matek f765 Auto takeoff failure

[menschel]

Crashed beyond repair, see crash analysis.

What is the currently recommended auto-takeoff method for a flying wing?

After some crash analysis, it seems I experienced the famous stall and torque roll on the AR Pro. Over-the-head throw with takeoff mission item, no conditions set, motor running at 85%. Let go too early, pitch 60deg, no impulse visible on yaw and roll from the throw, managed 25-30m/s² acceleration. Instead of nose-down due to the CG, it nose-up again by motor thrust after the throw, then stalled, torque rolled to the left, changed direction completely and turned for the tarmac. QED: too much…