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echo: aviation
to: Alexander Koryagin
from: Ward Dossche
date: 2014-03-31 15:04:02
subject: Re: MH370 update on my March 17th message

Alexander,
 
ak> So, if a pilot, has control on his plane ailerons, it can lower the
ak> plane nose to make the plane fly (glide) fast.
 
The nose-attitude of a 777 is not controled by the ailerons, but by the
horizontal stabilizer in the tail.
 
ak> Near the ground the pilot
ak> makes the nose up, the plane loses its (vertical) speed. IMHO, we see
ak> such a picture when a space shuttle lands without engines, with its nose
ak> up, not down.
 
Correct, of course. You also need to understand the landing speed of a
Space shuttle and the length of runway it needed to brake to a standstill.
There were only a few runways worldwide that could take it. Kennedy Space
Center has a 15,000ft runway with 1,000ft RESA (Runway End Safety Area) on
either side. The runways at Edwards AFB are between 4 and 7.5 miles.
Kennedy 31L was certified, Amsterdam 18R as well. The wing surface of the
Shuttle also allowed it to flare-out, meaning because of the air-mass under
its wings the landing is greatly facilitated.
 
ak> A stall can be if an _unskillful_ pilot lifts the plane nose too steep
ak> in upper direction.
 
AF427 stalled at high altitude with 3 skillful pilots ... a lot of
accidents occur because certain conditions were never encountered.
Sometimes there is recovery by extreme skillful pilots, sometimes not.
 
An airplane running out of fuel while holding without declaring a
fuel-emergency for example is shear stupidity.
 
ak> But near the ground the plane can lift its nose and diminish its
ak> vertical speed.
 
Yes, but then "very" near to the ground.
 
 \%/{at}rd

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