For the sake of argument, let's assume you switch off the engines (fuel cut-off) and continue to glide at 150 KIAS. How long before your hyd pressure drops below say 2000 PSI (without extending the RAT and engines windmilling somewhere between idle and 0 RPM)?
I guess it would depend on the number and degree of flight control deflections, but could you glide for say a minute and have enough pressure to flare? Or even extend flaps a bit?
Just like in a car you have 4-5 full brake pedal deflections before accu pressure is gone once you turn off the engine...
Just wondering...