Plane crashes into the Hudson River, NY.
#61
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Interesting to hear that the A320 has a "ditching" mode. What good thinking and it may well have saved lives in this case.
Les
#67
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And a bit more tech...
"the aircraft would probably been in ditching(landing on water) config meaning that it stayed a float a lot longer than if it had not been.
When the push button switch 13HL is pushed (the ON legend comes on) and the aircraft goes into the ditching configuration. This closes:
.the outflow valve 10HL,
.the pack flow control valves of the flow control units 23HB (24HB),
.the avionics skin air inlet valve 15HQ, if open,
.the avionics skin air outlet valve 22HQ, if open,
.the emergency ram-air inlet, if open,
.the fwd cargo isolation valves 4HN (5HN), if installed.
This basically would have prevented the cabin from flooding through the air conditioning and avionic cooling system
Also if APU had been running, assuming the APU generator was good, then all hyd systems would have been available to the crew via electric pumps to blue and yellow systems and green system via PTU"
"the aircraft would probably been in ditching(landing on water) config meaning that it stayed a float a lot longer than if it had not been.
When the push button switch 13HL is pushed (the ON legend comes on) and the aircraft goes into the ditching configuration. This closes:
.the outflow valve 10HL,
.the pack flow control valves of the flow control units 23HB (24HB),
.the avionics skin air inlet valve 15HQ, if open,
.the avionics skin air outlet valve 22HQ, if open,
.the emergency ram-air inlet, if open,
.the fwd cargo isolation valves 4HN (5HN), if installed.
This basically would have prevented the cabin from flooding through the air conditioning and avionic cooling system
Also if APU had been running, assuming the APU generator was good, then all hyd systems would have been available to the crew via electric pumps to blue and yellow systems and green system via PTU"
#68
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Instead, perhaps a Scarecrow mounted on the top of the fuselage would be more effective, in fact modeled on you, you have scared a fair number of birds in your time.
#70
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Mesh that was strong enough to withstand the airflow and birds as well would be too much of a restriction to airflow entering the engine. It would be quite a bit of extra weight too. Overall it is best to have nothing in front of the engine which could itself be drawn in anyway.
Les
Les
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Air Transat Flight 236 - Wikipedia, the free encyclopedia
#72
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Try 19 minutes and a successful(ish) landing without engines.
Air Transat Flight 236 - Wikipedia, the free encyclopedia
Air Transat Flight 236 - Wikipedia, the free encyclopedia
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#73
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What an astonishing achievement - an amazing man with an equally amazing name. As Les says let him have Blair's dodgy gong!!!
There has to be a better solution to the bird thing though - so many could have died here.
When I worked at an RAE establishment they sent a bloke in a Landrover with a megaphone and soundtracks of birds of prey to scare off birds before any take off and landing. Rather primitive!!!
D
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I'm pretty sure jet engines are capable of dealing with the odd bird hit. A flock on the other hand
I got bored one day and did a lot of reading about the different types of jet engines and how they work. Very interesting and also remarkably simple.
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#76
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I had my own bird strike last summer, was on my pushbike and had a Pheasant launched itself out of a hedgerow, scary.
This has probably been posted before but its a bird strike on a 757 at Manchester, well worth ten minutes, very reassuring how professional and calm everyone was.
YouTube - ThomsonFly 757 bird strike & flames captured on video
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Hudson Crash from Coast Guard Camera
Some of the earlier "BBC footage", plus more (total 10 minutes).
mb
Some of the earlier "BBC footage", plus more (total 10 minutes).
mb
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The Olympus engine, although very powerful had very large blades in the first stage but the construction was very thin for lightness. They were pretty fragile and a medum size bird would destroy the first stage. In the Vulcan the engines were in pairs side by side and if a bird broke the blades, that engine would surge and cough the blades forwards into the other engine, thus failing that one too. If we lost an engine like that it was assumed that you would always lose both. Luckily it would normally fly pretty well on the two that were left.
A seagull was big enough to do all that, as I discovered the hard way once.
Not surprised that he lost both his engines in a flock of geese!
Les
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#83
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We always wished the first stage compressor blades on the Olympus were that tough.
Les
#85
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I have got a turbine blade from one of XM 607 Vulcan's engines which is the one which dropped the bomb on the runway in the Falklands. Its something I treasure.
Les
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Last edited by Leslie; 20 January 2009 at 11:58 AM.
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I was gonna say, have a look at the news, and see how long it takes before it turns into a witch hunt.
Would be a shame to see an amazing story of survival and heroics, turn into a messy witch hunt.
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The first, I think, is a GE engine. The blades that impact the bird show typical 'soft body' damage where the leading edge of the blade forms a cupped shape and becomes permantly deformed.
The second engine (a Rolls Royce Trent 900 as used on the A380) shows the 'large bird' ingestion test. The bird (a carefully chosen duck) is fired by compressed air into the engine, which is running at max take off power. The most amazing part of the super slow motion is that you can see the massive difflection of the fan blade. This blade is three feet in length, hollow, and made from titanium. The blade wobbles as it spins at over 3,000 rpm, but when the engine is shut down, will appear to be virtually undamaged. The blade looks like it's made of rubber, but it is extremely stiff - the wobbling in the video shows just how much energy the blade absorbs with just one bird - trying to design something that could cope with multiple large birds just isn't realistic!