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Ursprungligen postat av
KlokOchSnygg
Vilka rekommendationer har du läst?
Vilka du än läst så GARANTERAR tillverkaren att planet klarar minst 150% mer, och sen förstås lite till....
... The only time a throttle is bent forward on a commercial a/c is if ground contact appears imminent and it ain't a runway of intended contact. ie, the "escape" maneuver when an a/c is about to hit a mountain. It's firewall power, pull the nose up into buffet, and climb to the moon to clear any obstacle. Should a guy get himself safely on the ground somewhere thereafter, it is mandatory engine inspection and probably all engine removal and replacement. The engines will have been oversped and overtemped with possible other mechanical damage.
So.............of the arecraft of which I am familiar, the redline speed of an MD-10 at 10,000' is 375 KIAS. At sea level, it is 350 KIAS. ( the MD-11 is less than these speeds for a number of reasons that would only get boring) I'm quite sure the 757 and the 767 have very similar max speeds give or take 20-30 knots.
Interestingly, if a pilot didn't pull the throttles back to "cruise" settings (on a commercial a/c) when he leveled off at altitude, the aircraft would accelerate right thru redline on it's way to possible self destruction...........the engines are that powerful.
You know that the safety factors built into aircraft are 1.5 for structural components (wings, fuselage,etc.) and 2.5 safety factor for engines and landing gear, and control surfaces. Don't quote me on these exact components..........this is from memory from years ago. But it means that the design limits imposed by the manufacturer are what are safe to fly with, ie the speeds listed above and the "g" loadings. In reality, the aircraft has to be able to withstand 1.5 times the "g" loading design limits in order to be certified. I'm not sure if the same is true of the speeds, but I feel reasonably sure it is true as well. What this means is........ an aircraft will not show signs of destruction until it reaches the 1.5 times the design speed limit or its "g" limit. At least that is what the manufacturer guarantees, as required by the FAA. So..........
If I were to level off at 5000' (or 1000') and leave the throttles set at climb power, this aircraft would exceed the 350 KIAS (knots, indicated air speed) design limit. But it probably wouldn't come apart............yet. I don't know how fast it would ultimately go because I've never done that in a commercial airplane. We are not allowed to do that. But I do know that if a pilot then pushed the throttles up to the physical limits (stops), exceeding all the engine redline limits and warnings, the engines would accelerate and eventually self destruct as would the airframe itself..........say around 1.5 times 350 knots or 525 KIAS. Reasonably, I would guess the aircraft would start shedding pieces as it approached 500 KIAS.
In answer to your question...............a 757, or a 767, or an MD-11 can easily do 450 KIAS at low altitude at least once and maybe many times before it would show signs of damage and could do well beyond that if it were meant to be total destruction.
450 knop är rätt mycket mer än något av planen den 11 september flög...
Detta kommer från en anonym pilot på en av konspiratorikernas favorritsite pilots for 911truth

, men ska du motbevisa honom så räcker det ju med att du visar att FAAs reglemente inte kräver att tillverkna sätter en 150% tolerans för flygplanskomponenterna..
Lycka till med det...
http://pilotsfor911truth.org/forum/index.php?showtopic=8764