... keep 'em coming guys.
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Originally posted by T.O.G.A. View PostThey also say that: "Landings are nothing but controlled crashes into terrain".
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and....
Helicopters don't fly, they simply beat the surrounding air into submission !
also....
Helicopters are merely 20,000 component parts built by man, desperately trying to kill the man who built them !If it 'ain't broken........ Don't try to mend it !
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Originally posted by brianw999 View Postand....
Helicopters don't fly, they simply beat the surrounding air into submission !
also....
Helicopters are merely 20,000 component parts built by man, desperately trying to kill the man who built them !
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The ten commandments of flying
1. Thou shalt abstain from the intersection takeoff for,
verily, the runway behind thee, as the altitude above thee,
cometh not to thine aid when thou needest them.
2. Thou shalt not linger on active runways
lest thou become like unto ground sirloin.
3. Ignorest thou not thy checklists for many
are the switches, handles, gauges and other demons
awaiting to take cruel vengeance upon thee.
4. Thou shalt cast thine eyes to thy right and also to thy left
as thou passeth through the firmament
lest thy fellow pilots bring flowers to thy widow
and comfort her in other ways.
5. Buzzeth not, for this shall surely incur the wrath
of thy neighbors and the fury of the FAA
shall be called down upon thy head.
6. Thou shalt be ever mindful of thy fuel lest there be nothing
in thy tank to sustain thee upon the air and thy days be made short.
7. Trust not thine eyes to lead thee through the cloud
lest the Archangel Gabriel await thee therein.
8. Thou shalt not trespass into the thunderstorm
lest the tempest rend the wings from thy chariot
and cast thee naked into the firmament.
9. Put not thy trust in weather prophets,
for when the truth is not in, then they shall not
accompany thee among thy ancestors.
10. Often shalt thou confirm thine airspeed on final
lest the earth rise up and smite thee.
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And the Ten commandments for flying helicopters
1. He who inspecteth not his aircraft giveth his angels cause to
concern him.
2. Hallowed is thy airflow across thy disc restoring thine
Translational Lift.
3. Let infinite discretion govern thy movement near the ground,
for vast is the area of destruction.
4. Blessed is he who strives to retain his standards, for
without them he shall surely perish.
5. Thou shalt maintain thy speed whilst between ten and four hundred
feet lest the earth rise and smite thee.
6. Thou shall not make trial of thy centre of gravity lest thou
dash thy foot against a stone.
7. Thou shalt not let thy confidence exceed thy ability, for broad
is the way to destruction.
8. He that doeth his approach and alloweth the wind to turn behind
him shall surely make restitution.
9. He who alloweth his tail rotor to catch in the thorns curseth
his childrens children.
10. Observe thou this parable lest on the morrow thy friends mourn thee.
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Originally posted by SYDCBRWOD View PostOn landing a plane is in a very low energy state (in some ways you could liken it to riding a bicycle - the slower you go the more difficult it is to remain upright) - it is essentially transitioning from flying to 'driving'. To do so you need to slow to the point where the wings no longer support the aircraft and it needs wheels. Ideally, this happens on or in very close proximity to the runway. When a plane is travelling that slowly before landing the wings are only developing just enough lift to keep the plane in the air. A sudden change in wind direction and speed can remove some of that lift. Not really that much of an issue if you were at 20,000 feet, but in landing you may have noticed that the ground gets very very close (kinda part of the whole landing thing), take away a whole stack of lift due to a microburst when you are close to the ground and very slow and you end up dropping short of the runway as a DC10 did in the 1980's. At 20,000 feet you have altitude and airspace to recover.
At 20,000feet at normal cruising speeds if you need to avoid something you have all options available to you: up - because you can trade airspeed for altitude very easily, down - because you have space below you, and left or right are self explanatory. When landing you do not have the altitude to avoid by going under, you do not have the airspeed to climb a great deal, and a sharp turn left or right may result in stalling a wing. A modern jet engine will need a few seconds to spool up and develop full power to gain you that airspeed to give you the airspeed to manouvre.
When landing an aircraft needs to touch down on a tiny strip of concrete - if there is fog, cloud, rain or crosswinds that becomes so much more difficult. At 20,000ft these same conditions are not anywhere near as dangerous.
Also, I do not kow the numbers but subjectively I sould say that alot of accidents also happen during the very first minutes or even seconds into the flight (prominent examples being spanair, concorde) - and teh chance of surviving appears much lower than when experiencing a landing accident.
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