Fan Engine Blade Off Testing

The results are clear ;)

Category:

Entertainment

Tags:

• turbine
• engine
• fan
• fanblade
• blade
• unbalance
• explosion
• testing
• jet
• boeing
• airbus

[clydeburkey]

can that happen when it is on a jet plain ?

[metalmelvin]

@clydeburkey yeah, it could, but fortunately the engine structure is disigned to absorb the punishment. However, i have seen fan blades ripping through the engine cowling right into the fuselage, so i would not like to sit parallel to the fanblades when one desides to leave ;)

[1BustedMyth]

as a flight mechanic it breaks my heart to see that get done to a new engine, but it has to be done, amazing video

[lophilip]

More then theortically, if there is 1 engine, the plane for sure can land. In fact as long as the wing is intact, and there are controllable surfaces, the plane has a good chance to land.

[XStarss]

@lophilip Depens on how far he is from runway, he cant land on water or in forest.

[MrRazorblood]

My idea is that probably in the future they can place lasers on the entrance to the engine shaft, so that any foreign objects that enter the shaft would be disintegrated before being sucked into the fan.

[ArmadaLight]

что за музыка в видео ?никому не известна?

[bbBassYo]

@doppelplusnarf Yes the pressure part is obviously true.. Maybe because the engine suddenly lacks a bit of power due to the imbalance it starts te depressurize rather violently, Thats probably the cause. Good one!

Also thanks for your tip about the whole "Byford Dolphin" thing. Very interesting!

[doppelplusnarf]

@bbBassYo Also check the video "Turbine engine explodes" ( /watch?v=WAhjSviYVr8 ) for a different shot of the engine test at the end of this video, in real-time.

And if you're interested in some other rapid large-scale high-pressure nastiness (!) you might also want to check out "Byford Dolphin" in wikipedia (the section about the diving bell accident).

[doppelplusnarf]

@bbBassYo I've read around a bit ("just" wikipedia on jet / turbofan engines and engine surge / compressor stall... ^^), which brings me to the rough estimate that the pressure inside the engine should be several times higher than the atmospheric pressure at sea level; and as a bicycle tire at 8 bar already produces a nice bang resulting in beeping ears for several minutes... ^^

[bbBassYo]

@doppelplusnarf You know, That a good one! I never thought of that. Although i dont know if it would lose compression that quickly.. but since i dont know the half of it, its probably something like that.

[doppelplusnarf]

@bbBassYo I'm not 100% sure on that, but I'd say it is because of the compressor not working anymore due to the "accident". That would mean that nothing holds back the high pressure air-fuel-mixture from the combustion chamber, which therefore escapes through the front as well.

[bbBassYo]

@UcanthandletheYouth I sort of understand what you are saying, the imbalance of the rotor would most certainly wreak some major damage. But how this would result in a huge fireball i dont quite understand, maybe its as simple as a ruptured fuel line or something..

Anyway thanks for your input..

Dont mind my english by the way.. it is not my first language:)

[UcanthandletheYouth]

@bbBassYo I'm guessing the explosion just releases the blade from the hub, where it is free and no longer bound to rotate with the other blades. It has kinetic energy, though, traveling quickly and approximately tangential from its motion before the discharge. This linear momentum sends it up towards the engine walls, and they must deliver the resistive impulses, yada yada, and vibrate back to stability.

That's my take.