Originally Posted by
MurphyWasRight
So the question to those who know how to calculate such things are:
A: What was the force vector through the PF's seat during the descent given the pitch and other forces?
Here we have to make a simplification, because we have no real data about the decelleration of the AC during the descent.
If we assume a linear decelleration from 400kts to 110 kts during ~200s
we have a horizontal decelleration of 0,075g.
Then we have to add the effect of the attitude:
If we take the attitude as being 15° we would see:
~0,96g vertically
~0,25g horizontally
with regard to his seat.
From the horizontal 0,25g we have to subtract the 0,075 *0,96 so we end up with +0,18g felt horizontal acceleration with regard to the seat axis and close to 1g vertically.
All in all the pilots should have felt a relatively stable acceleration feeling with normal vertical g during the descent phase after reaching the -10kfpm
Taking into consideration that the decelleration might have been degressively, the acceleration feeling could have been progressive to some extent.