Pandora From , joined Dec 1969, posts, RR: Posted (15 years 1 month 2 weeks 4 days 20 hours ago) and read 777 times:
Just got back from TATE 99 in Taipei...
On the way back the aircraft encountered headwinds all the way and heaps of turbulence...
However, when the plane is actually in the turbulence, I felt the plane was actually flying up and down (?? but estimation based on the stomah lurches and body being forced onto the seat), but on the flying map on the personal entertainment system, it displays 29,000ft without gaining or losing height, why?
David L From United Kingdom, joined May 1999, 9524 posts, RR: 42
Reply 6, posted (15 years 1 month 2 weeks 3 days 14 hours ago) and read 654 times:
As CYXX says, you can be fooled. If you're climbing and suddenly your rate of climb decreases you'll feel as if you're falling for a second or two even though you're still climbing. The reason is that your momentum causes you to keep climbing at the same rate briefly while the seat, attached to the plane, is no longer climbing as fast and drops away from you. Unless you're really unlucky, you'll fall back down on to your seat fairly quickly.
As usual, I'm just waffling on because I don't know the answer to your original question but it sounds like some kind of "damping" as has already been suggested. I am curious to know just where the information on the screen comes from.