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| Landing St. Maarten from Cockpit 747 |
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Landing St.Maarten from cockpit 747. After
nosewheel landing camera touched windshield
causing crackling noise.
For those viewers who made comments (or new
viewers who are thinking about making the
comment) that this approach is too high
and/or too fast or whatever else you might
think, here some free ;) flying lessons from
someone who's flying B747's for 20 years:
On an approach on instruments a B747 should
cross the runway threshold (= the piano keys)
with the main wheels at ± 35 ft above
threshold. The 747 is so big that at that
point the altitude of the cockpit is 35 ft
higher, so the cockpit is at ± 70 ft when
main wheels cross the threshold.
On a visual approach, as is the case here at
St.Maarten, we have to have some more margin.
Normally the pilot aims to see the runway
threshold disappear under the nose at 80 ft
(mind you, the main wheels are at that moment
still NOT above the threshold) to have
sufficient main wheel clearance.
If you look at the video and notice the
altitude callouts, you'll see the threshold
disappear under the nose at the call 50, so
actually I am a bit too low in stead of too
high. (Actually I am only too low for a
visual approach. If you look at my landing at
JFK
http://www.youtube.com/watch?v=q4YoXyYBbYA&fe
ature=user you will see that I cross the
threshold also at 50 ft, which is normal on
an instrument approach. Note: the automatic
altitude callouts you hear on this video are
Radio Altimeter altitudes. The Radio Alt is
zero when the gear is on the ground with
struts extended.)
Now, there are quite some viewers who think
we landed too far on the runway. What follows
from earlier explanation is this:
We approach a runway at a three degrees
approach angle. If main wheels cross the
threshold at the correct altitude, the main
wheels will hit the runway at approx 900ft
(300m) behind the threshold, that is, if you
don't flare the airplane. If you look again
at the video and wait till you hear
50,40,30,20,10 and see the solid white
markers, they are at 900ft behind the
threshold and the plane touches down right
behind them, because I did flare the
airplane. (Passengers seem to hate hard
landings!!)
THIS IS THE NORMAL TOUCHDOWN POINT FOR A
B747.
The FCTM(=Flight Crew Training Manual) from
Boeing says: flare distance is approx 300 to
600mtr (=900 to 1800ft) beyond the threshold.
So, please, stop nagging about this landing
being too far on the runway.
And then something about too fast: On this
approach the 747 weighs about 260.000 kgs.
The required approach speed is then 150 kts
which is about 175 mph or 280 km/hr. So what
about TOO FAST? If we fly slower, we will
fall out of the air!!
Tags : Landing cockpit Boeing 747 B747 St Maarten Martin |
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Affichage : 1507204
Durée : 188 s |
| Dj-Maarten: Ik Ben Een Kikker! |
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Ik ben een kikker van Dj Maarten. Echt een
leuk filmpje en zeg nou zelf, de kikkertjes
zijn schattig dus..
Enjoy
#42 - Most Discussed (All Time) - Pets &
Animals - Netherlands
#8 - Most Viewed (All Time) - Pets & Animals
- Netherlands
#46 - Top Favorites (All Time) - Pets &
Animals - Netherlands
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Netherlands
#2 - Most Linked (All Time) - Pets & Animals
Animals - Netherlands
Tags : dj-maarten dj maarten ik ben een kikker bleach |
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Affichage : 485145
Durée : 190 s |
| Saint Maarten - Past, present and future |
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This short video was made as a lead in to the
showing of An Inconvenient Truth at a local
movie theater (Movies 1 & II) in St. Maarten.
The intention was to make the issue of Global
Warming more personal to the viewers. Not one
politician has ever mentioned the issue of GW
nor has our press ever asked them about it.
Sadly, in reducing the size of the video to
post onto YouTube the music is now slightly
off to the photos, which also lost some
quality. We will be looking for another way
to post this video in it's full glory on
another site in the future.
www.sxmprivateeye.com
Tags : Sint Saint Martin global warming environment caribbean history |
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Affichage : 30347
Durée : 477 s |
| TakeOff St Maarten from Cockpit 747 |
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TakeOff from St. Maarten as seen from cockpit
747.
To answer some remarks from viewers:
Why is T/O so fast and short? Well aircraft
weighs only 260.000 kgs (max = 396.000kgs) in
this T/O with only 30.000 kgs of fuel for a
flight time of 1hr15min to Curacao (you can
see the landing here:
http://www.youtube.com/watch?v=A5ZLUP1Aroc ).
With this low weight Vr is 125kts and
climbout speed is 155kts(=V2 + 10kts)
Why is V1 and Vr called so close?
Because, when a/c is very light you have to
increase V1 to the Vmcg(=Vmin control
ground)speed. If you don't and start flying
below this speed and an outboard engine
fails, you are not able to control a/c.
That's why in this T/O V1 is the same as Vr.
Yes, it's a 747. No, it's not fake.
Tags : TakeOff cockpit Boeing 747 B747 St Maarten Martin airplane |
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Affichage : 409575
Durée : 121 s |
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