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Ursprungligen postat av
yegori
Personligen tycker jag att den officiella historien är mycket mer fantastisk. Dvs. hur inkompetenta muslimer med primitiva knivar kunde ta över 4 fyra flygplan, varav tre sedan prickade sina mål. ...
Deras bästa pilot Hani Hanjour kunde inte flyga och landa en vanlig CESSNA på ett acceptabelt sätt och hade aldrig satt sin fot i en 757:a. Sedan ska han alltså ha gjort en serie manövrer som fick de inblandade flygledarna att tro att det rörde sig om ett militärplan: t.ex. göra en skarp sväng på 270 grader i hög fart och sedan flyga flera hundra meter längs med marknivån i över 800 km/h (utan att planet slets sönder i och med den låga höjden och det stora luftmotståndet.....
Vi kanske skulle fråga en riktig pilot istället? (Igen...)
Evan Burton är en australiensisk pilot med extremt mycket erfarenhet och meriter (se själv:
https://www.linkedin.com/pub/evan-burton/12/30b/91a)
Jag vet inte riktigt vad du själv har för meriter och erfarenhet från trafikflyg men här svarar Evan på några av dina påståenden, som det om hastighet, svårighet att flyga etc.. Du kan väl läsa igenom och berätta på vilka punkter han har fel och varför?
As an experienced 747 captain and flight instructor, could you comment on various 9-11 claims that have been made?
1. Impossible for aircraft to be flown at speeds claimed.
There's nothing on a Boeing to stop you flying as fast as you like. For example the mach limit on a 747 is M 0.92 (And I've flown one that fast as well) but in testing Mr Boeing had the prototype up to M 0.991. Whilst that's a mach number the same principle applies for indicated speed for when you are flying down low. The published limit for most Boeings is up around 380 knots but there's nothing stopping you from going a good 20% faster if you felt like it. The twin-engined jets have quite a lot of thrust available, in case they lose an engine on takeoff, so they can still climb away, so down low with both engines running they can very easily go past the limiting speed, Vmo. There's normally an artificial limit of 250 knots below 10,000' and that's for traffic regulation (everyone doing the same speed makes things easier for the controllers) and for bird-strike protection on the windscreens. IF you ignored those two factors and could stand the noise in the cockpit you could very easily go about twice as fast and not damage the aeroplane at all.
2. Impossible for hijackers, who were described as poor pilots, to have carried out manoeuvres claimed.
Not particularly difficult at all - You're hitting an immobile and very large target, and also much larger than your plane. There's an old and very reliable trick where you pick a point on the windscreen in front of you (use a marker pen to make it easier) and manoeuvre the plane around to put that dot on the target. As long as you keep the dot on the target the plane will hit it.
Teaching people to fly an aeroplane around the sky isn't difficult either, landing is harder, using the radio adds another level of difficulty, and so on. But the task of controlling up/down and left/right can be taught adequately to nearly anyone in a couple of hours. You can learn on something as small as a Cessna 150 and the skills you learn work exactly the same on an Airbus A-380.
3. Impossible for a 757 to get closer that 60 feet AGL flying at 500 mph towards Pentagon because of ground effect.
The higher the speed the less you notice ground effect. The faster you go the more easily the plane will go where you point it.
http://educationforum.ipbhost.com/index.php?showtopic=17744&page=4