Keep Oppo planelopnik

"You can tell a Finn but you can't tell him much" (youcantellafinn) 02/17/2015 at 11:21 • Filed to: smoke those brakes, planelopnik

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After watching the Boeing paint video this one popped up as a recommended. It is definitely worth a couple minutes of your time. This is the worst case brake test of a fully loaded 747. They load it up to MTOW and then at maximum abort speed stand on the brakes. No thrust reverser is used and the fire crews have to wait five minutes before they can apply any water or foam. And the brake linings are machined down to minimum.

ttyymmnn > You can tell a Finn but you can't tell him much 02/17/2015 at 11:25

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Escalier!! It didn't go so well in this A340 rejected take off test.

Jcarr > You can tell a Finn but you can't tell him much 02/17/2015 at 11:26

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You can see the fuse plugs blow nice and clear on the 777 RTO.

TheHondaBro > You can tell a Finn but you can't tell him much 02/17/2015 at 11:29

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Keep Oppo 747.

You can tell a Finn but you can't tell him much > ttyymmnn 02/17/2015 at 11:35

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"They make me sick!"

Definitely not the smoothest test there.

MonkeePuzzle > ttyymmnn 02/17/2015 at 11:38

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must be pretty hard a fire fighter to sit around watching a fire

ttyymmnn > MonkeePuzzle 02/17/2015 at 11:43

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Must be pretty hard to sit in the cockpit of a burning airplane that is filled to the brim with fuel. The lack of communication between the pilots and the gr0und is stupefying.

ttyymmnn > You can tell a Finn but you can't tell him much 02/17/2015 at 11:44

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There's probably a lot of fuel in that plane. I'd want out, too.

MonkeePuzzle > ttyymmnn 02/17/2015 at 11:48

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yeah, the full load of fuel would be pretty panic inducing. the time from "oh look a little tire fire" to "OK EVERYONE GET OUT!!!" would be pretty minimal. And it's not like getting down from such aircraft is easy, nor are you in good shape just being out, you need to be away, FAR away

You can tell a Finn but you can't tell him much > ttyymmnn 02/17/2015 at 11:55

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Yeah, I wouldn't want to be hanging around waiting for the stairs either. I think at that point the test gets expanded to include the emergency slides just for thoroughness.

ttyymmnn > MonkeePuzzle 02/17/2015 at 11:58

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They have escape ropes that can be lowered from the cockpit window. But it's a long way down, and I wouldn't want to fall. Best just to get the damned stairs. I wonder if somebody got fired over that little oversight.

boxrocket > You can tell a Finn but you can't tell him much 02/18/2015 at 09:43

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I like seeing parallels between the aviation and automotive industries. Racecar with carbon brakes, now planes with carbon brakes (or maybe planes had them first?). Cars with robot painters, now planes, too. Plane testing brakes by speeding up then slamming them, just like cars during testing and evaluations.