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General >> Hangar talks >> Lou - STORIES
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Message started by JayG on Feb 21st, 2011 at 5:11pm

Title: Re: Lou - STORIES
Post by CoolP on Apr 14th, 2011 at 2:54am
Got your point and didn't want to be insulting on it or something.
Of course, the heavy thing has some more kinetic energy to put into another one. But as the whole aircraft market covers all sizes, this is some unavoidable sideeffect of building e. g. B1900 and (when compared) huge 767 and above.
As said, they don't usually collide with lethal energy amounts, but sometimes "touch" like seen on that video.
If they collide with high speeds (means "air" then), even a small Cessna can take down a DC-9 for example. Happened at KLAS.  :-/
http://en.wikipedia.org/wiki/Aerom%C3%A9xico_Flight_498


Quote:
Also, because the A380 is newer, the pilots flying it would not have as much experience on it as a 747 pilot could potentially have.

Less experience on that plane (A380), you are right. Overall experience might come in at the same amount since the Captains on the A380 are coming from the other heavies of the corresponding fleet. Could mean A340 or 747 if the airline runs Boeing too, which more than a few do.


Quote:
This same thing could happen with the 747-8i, depending on how different its flight dynamics are from say, the 747-400.

Maybe, maybe not, because the manufactures spend quite some time on giving the plane the same feel like the older or even smaller ones. This high communality approach for example lead to the only minor cockpit changes from the 747-400 to the -8 and might also lead to a very, very similar flight feeling while still being more efficient.
Some 777 elements joined in though, that interactive checklist for example.

The whole Airbus stuff also not only shares cockpit layouts but the flight feeling too. I heard some Lufthansa Captains talking about the A380 and they said that it doesn't behave any different than the A340/A330 types, although being sized far above them. Vspeeds differ, yes, but the feel does not.
See it like on modern cars where you can choose the actual character of steering, braking and engine response by just some switch.
E. g., you don't actually see how much Aileron movement the plane uses when you move that sidestick. They've tuned it in the way that the same sidestick movement is necessary on all planes for a given bank angle, so the feel will always be the same, since the joysticks stays the same, you only change the plane.  :D

This will surely not sound too sympathetic to the old school pilots, because it's full of software in between, but the newer Boeing planes (does not include the 747-8 since she was build as close to the 747-400 policies as possible) are doing just the same.
Interesting fact, the 777 and the whole Airbus bunch share the component supplier for the fly by wire installation. So what makes the difference then is just the software.
So, on some sectors of engineering, the aviation industry follows the path of the automotive one, using a wide arrangement of very similar parts but achieving a different product with the software and design setup in between and around the systems.
This of course does not include parts as wings or something, those are Boeing/Airbus/Embraer/and so on specials, but looking at the engines then, you return to the similar viewpoint as most machines are tuned for a special plane, but aren't build only for this one and from the scratch. They all belong to a family, for good reason, since the engineering there eats up huge amounts of money.
The 787 will feature a special though, coming with a non-bleedair system.

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