I guess what I'm saying is that there are basically three things that need to happen for this aircraft to perform that maneuver, and one design condition that must be met:

Design condition: Power/Weight Ratio of ~1.2:1 I'm guessing would suffice, but this would need to be tested (important point there)

1: Nozzle has to go from 90 degrees down out to about 5degrees up within about 1/10th of a second, possibly more. If the nozzle is being used to increase the stability of the aircraft and provide control inputs this is probly something that it can do. Again, this must be tested even if the engineers can confirm that the nozzle can do this.

2: The clutch transferring power from the second turbine (in the back of the engine) through a long shaft out the front of the engine and into the front fan must be able to disengage nearly instantaneously and allow that second turbine to spool up

3: The second turbine must spool up and stabilize quickly in order to allow the engine to reclaim the power which was being transferred to the front tan. This must happen very quickly, as the engine is only operating with about 20,000lbf of thrust while the fan is on, but it needs all ~45,000lbf or so of it's thrust to power out like a rocket in a condition like that.

I am curious what thrust/weight ratio would be required to power out like shown in the video, but from what I've seen RC planes do I don't think it's a whole lot more than the 1.2:1 that I guessed.

Basically, the transition time from full downward thrust to full forward thrust has to happen really quickly, power transfer and spool rates must be very rapid, AND the aircraft has to remain stable in an incredibly unstable condition at that moment when it's basically just sitting upright in the air. The fist part is an engineering question outlined above but the second part I'm thinking would be attributable to luck alone.

I think the plane could do it maybe is all I'm saying.