How hot did the core columns need to collapse into their own footprint at freefall speed
Discussion
At ~500C or ~930F steel has lost 40% of it's strength.
it goes down rapidly after that.
this is easily in the range of jet fuel under non ideal burning situations and if you introduce the right oxygen fuel mix it can cause temps of 2000C.
What speed does an aluminum plane need to be traveling to slice through steel?
oh so you're just going to ignore your first point i critiqued ?
is this what you do ? try and win on one point and move on when someone challenges you ?