pitot tubes freezing up.
I'm wondering if they dropped the nose (to regain airspeed), and exceed Vne.
that sounds a lot like
pitot tubes freezing up.
I'm wondering if they dropped the nose (to regain airspeed), and exceed Vne. |
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Not likely.
From what I've read the aircraft was largely in tact when it hit the ocean. I'd expect greater structural damage prior to impact if they'd exceeded Vne. Especially when one considers how fragile those plastic airplanes from Europe are. Remember this?
The National Transportation Safety Board determines the probable cause(s) of this ACC as follows: http://www.ntsb.gov/...11130X02321&key=1 Since this is a fly-by-wire a/c, it's pretty interesting how the pilot was able to apply "unnecessary and excessive rudder pedal inputs" while flying well below Va. If these Eurotrash a/c can't handle a little wake turbulence, I doubt very seriously they'd stay together at Vne. ----
bcnu, Mikem |
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Did some searching
and that thing was dropping like a rock. Something like 10,000 ft a minute.
I had not realized that they flew INTO a thunderstorm. http://www.theatlant...-tells-us/239598/ |
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Yup. ~ 120 mph down. AKA "terminal velocity" :-(
If one knows the numbers for mass, appropriate cross-sectional area, once can calculate the terminal velocity here - http://www.grc.nasa....rplane/termv.html
150 ft/sec = 100 mph. Cheers, Scott. |
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One possible nit.
With the airbus' FBW [fly by wire] system and passive stick, the crew would have none of the force or buffet cues through the side-stick that might have told them this. I am very far from an ATP and I know next to nothing about Airbus control systems. But, after about 9 years of hangar flying with some ATP's, it's my understanding that even fly-by-wire a/c have "shakers" in the control yokes. These are designed so that the pilot gets a physical cue that a stall is imminent. Maybe it malfunctioned or is not part of the Airbus design (if not, that, in and of itself, would be alarming). This is very dangerous flying, I don't care who you are. In IMC, you're taught to "trust your instruments" because, well, that's the only thing that's going to tell you if you're upside down or not. It's a hell of a thing to be in hard IMC and not be able to rely on your instruments. |