Originally Posted by
Viscount Way
After re-reading Collins' description of their PulsOx system I find myself a little confused by this:-
"Three duration options (small, medium and large) accommodate your aircraft’s descent profile – so you can choose the right size oxygen cylinder to get the aircraft to safety without carrying extra weight. Changing the descent profile is easy. Simply switch out the individual oxygen cylinder to the size that matches the new profile."
Can anyone with 787 experience translate this option into practical terms please? How does a flight crew know which money-saving option was adopted?
why would you need to know that? An emergency descent is flown at the speed, and hence rate of descent, at maximum or max prudent depending on perceived airframe damage. What happens subsequently is the result of engineering and cost calculations made prior by others. You can only play the hand that you are dealt.