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Author Topic: UPS 2954 Flight Control Issues  (Read 7626 times)
svoynick
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« Reply #15 on: October 03, 2010, 06:15:34 PM »

Wasn't speculation at all it happened...

OK, I'm open to listening to evidence.  I grant that spoilers disrupt airflow to reduce lift and this can be used to create rolling moments to initiate turns...  But can you provide authoritative references or sources for any of the rest of the following:
That is now exactly what I am afraid about, when spoilers are active during a turn (roll) they disrupt the airflow to reduce lift on that side. When this disruptive airflow starts to rotate towards the backside of a spoiler (due to wingfoil) and lifts it up and into a locked position. So far only Airbus has had this and they have a exclusive wingshape (foil). So it has not (yet) been confirmed, but I am a litte afraid it would be possible. If this would be studied with a tailwind then I have no idea what will come out. (windtunnel vision)
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alltheway
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« Reply #16 on: October 04, 2010, 03:30:51 AM »

Wasn't speculation at all it happened...

OK, I'm open to listening to evidence.  I grant that spoilers disrupt airflow to reduce lift and this can be used to create rolling moments to initiate turns...  But can you provide authoritative references or sources for any of the rest of the following:
That is now exactly what I am afraid about, when spoilers are active during a turn (roll) they disrupt the airflow to reduce lift on that side. When this disruptive airflow starts to rotate towards the backside of a spoiler (due to wingfoil) and lifts it up and into a locked position. So far only Airbus has had this and they have a exclusive wingshape (foil). So it has not (yet) been confirmed, but I am a litte afraid it would be possible. If this would be studied with a tailwind then I have no idea what will come out. (windtunnel vision)

First of all if I say "That's what I am afraid of" I mean I am wondering,
second I know (now) of Three occasions of spoiler deployment in flight, so there can't be too much of evidence at all as it still has to be evaluated... (My son 4 1/2 year does understand that even!)

So I am wondering in this discussion if someone knows some more about it and where to find information

http://www.avherald.com/h?article=42d11184&opt=0
http://www.avherald.com/h?article=4181e1c9&opt=0
http://www.avherald.com/h?article=43196df9&opt=0

« Last Edit: October 05, 2010, 02:09:18 PM by alltheway » Logged
Fryy
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« Reply #17 on: October 04, 2010, 03:57:15 AM »

Good ol' Scarebus
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