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My recollection from many years ago was that the B744 clean stall was defined by deterrent buffet.
Boeing certainly did not stall this aircraft unless the tailplane was strain gauged. There was no correlation between the buffet levels experienced by the test crew and that experienced by the tailplane - structural damage could result. I recall hanging around Boeing Field awaiting completion of strain gauge installation on a B744 up at Everett. |
Originally Posted by Lookleft
(Post 9747472)
The speculation about wake turbulence contributing to the stick shaker is interesting but I would have to ask whether an A380 could do this to a 747? An A380 throwing around a Challenger is understandable given the relative sizes, but if it is possible for an A380 to get a 747 close to the stall then there has to be a serious rethink of wake turbulence separation in a holding pattern! LS states that he experienced mild encounters which I assume was from other 747s. If it was an initial encounter with wake turbulence I would also expect that mention would be made of that in the ATSB summary.
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Had the cr@p kicked out of us flying into AMS recently following one of those little 737 aeroplanes. We were in a 380. Have also been rolled left and right following 777, 747, 757, 380 while also in a 380.
The challenger being discussed, may have been bent from a less than graceful recovery. |
Had injuries on a 767 years ago when at FL370 about 10-15 miles behind a 744. Had the A380 thrown sideways and A/P disengage behind another A380 into DXB. I can absolutely see the right kind of wake getting a 744 at min speed into an UAS.
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Originally Posted by itsnotthatbloodyhard
(Post 9746268)
BH
Please stop trying to inject knowledge and experience into this discussion. Try instead to use terms like 'plummeting turbulence', if you don't mind. Thank you. |
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