.
If the tail drops too far the plane simply stalls, and falls out of the sky.
.
Technically, a stall happens when an aircraft exceeds the the max angle of attack for their flight parameters.
(Warning: Apology, FReeper post ahead that has too much information and is not witty)
A stall can be achieved when the aircraft is flying nose straight down. . .I’ve seen it while teaching spins.
Students flying the T-37 are instructed on how to recover from a spin/stall.
For the T-37 (and many other aircraft) recovery from a spin/stall requires pushing the control stick forward to move the nose of the jet to drop down to the vertical to break the stall. Sometimes a student gets a little intense when all he sees is a canopy full of dirt coming up to meet him and the student abruptly yanks the stick back and generates a new stall and spin.
Like I said, it is not the tail sinking that causes the stall.
Flying a loop the tail goes “down” while nose goes up, no big deal, as long as you are flying fast enough and not exceeding max angle of attack.
In the video, the load shift apparently moved the payload too far aft (the CG to moved too far aft) and the aircraft didn’t have enough elevator authority to push the nose forward to less than the max angle of attack. Disaster.
FReeper pompous post complete. Cheers.
;-)