Let'sgoflying!
Touchdown! Greaser!
seems like the test was inadequately planned.
long video.
http://www.liveleak.com/view?i=1da_1286124077
long video.
http://www.liveleak.com/view?i=1da_1286124077
And I want to start singing "Stairway to Heaven". At what point do they say "it's too much of a hazard and we're evacuating via emergency means" rather that waiting for the stairs?seems like the test was inadequately planned.
long video.
http://www.liveleak.com/view?i=1da_1286124077
That is what I was wondering. It seemed like everything was well scripted and planned for EXCEPT getting the stairs to the aircraft to get the crew out in the event of fire. OopsAnd I want to start singing "Stairway to Heaven". At what point do they say "it's too much of a hazard and we're evacuating via emergency means" rather that waiting for the stairs?
Somewhere in YouTube-ville is a 777 test (I think it was a 777). Similar test, similar results.
everything was well scripted and planned for EXCEPT getting the stairs to the aircraft
I didn't think firefighters wandering around near exploding tires was too cool.
That AND I'd have expected that once they started applying water, they'd have used a widened spray pattern to knock down the heat, instead of a direct stream. The quantitiy of water available seemed pretty minimal too, given that a fire was a real probability in this test...
Of course, it's always easy to second guess.
I didn't think firefighters wandering around near exploding tires was too cool.
I am pretty sure they did not "explode".
...
I can with almost certainty say that it was the thermal plugs letting go.
Somewhere in YouTube-ville is a 777 test (I think it was a 777). Similar test, similar results.
I am pretty sure they did not "explode". Those tires have thermal fuse plugs that melt when the wheels get hot to let the pressure out. They are designed to specifically keep the tires from exploding. I can with almost certainty say that it was the thermal plugs letting go.
I am pretty sure they did not "explode".
I'm pretty sure this was an example of "failed" fusible plugs,
I'm still amazed at the poor fire fighting effort. Heaven help them if they'd had a real fire like a crash with a few thousand gallons of fuel burning, passengers on board, etc. That looked like a Gilligan's Island effort at fire fighting.
I'm still amazed at the poor fire fighting effort. Heaven help them if they'd had a real fire like a crash with a few thousand gallons of fuel burning, passengers on board, etc. That looked like a Gilligan's Island effort at fire fighting.
I was wondering if the guy in charge of the valve was holding off, on instructions from the test boss.
(It could be that if they used water too soon then they fail the test and have to start all over.)
If not, then the flow appeared meager. Pity the pax in a crash with fire should that be all the water that is available.
Given the fact that this was part of a test program, the rules aren't exactly the same.
Same test, very different results.
Yeah - I know the 777 was a PASS, I didn't realize the Airbus was a FAIL.
That's a pretty brutal test.
If by "still at takeoff power" you mean that the power is never reduced during the abort then that would be incorrect. I can't imagine any set of brakes stopping an airplane that is already at V1 if takeoff thrust continues to be applied. Heck, sometimes it's hard to hold the brakes at takeoff thrust on the runway or ramp starting from a standstill.If I recall correctly, the stop from V1 must be made without use of reverse-thrust, and with the engines still at takeoff power... can that be right, or am I (again) talking out of my a--?
That is what I was wondering. It seemed like everything was well scripted and planned for EXCEPT getting the stairs to the aircraft to get the crew out in the event of fire. Oops
If by "still at takeoff power" you mean that the power is never reduced during the abort then that would be incorrect. I can't imagine any set of brakes stopping an airplane that is already at V1 if takeoff thrust continues to be applied. Heck, sometimes it's hard to hold the brakes at takeoff thrust on the runway or ramp starting from a standstill.
That AND I'd have expected that once they started applying water, they'd have used a widened spray pattern to knock down the heat, instead of a direct stream. The quantitiy of water available seemed pretty minimal too, given that a fire was a real probability in this test...
Of course, it's always easy to second guess.
Neat video of the A380 brake test on a test set up