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How long to clear the 'suck zone' of a turbofan after start is initiated?
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How long to clear the 'suck zone' of a turbofan after start is initiated?
Are engines automatically stopped in an emergency landing?Why are the engines on the MAX and neo prone to bowing?How long can passengers survive after ditching in the ocean?Why is there no alert if shutting down a running engine during flight?How does the shape of the blades on N1 fan on a turbofan generate thrust?How can cargo be jettisoned from a C-124 in flight?What would have happened if the jet engine on my aircraft had ingested caulk from the pavement?Can we eliminate the center tank of large passenger planes?How is risk managed in single engined piston aircraft flights?What's the name of this component of the turbofan engines?How do you maximize an electric engines thrust?Does the P&W F100 turbofan engine of the F-16 really produce this much power?
$begingroup$
I recently found this (IMO funny) picture. All funny and all. But let's make this a real situation.
Let's suppose I see my crush and his BF doing this, and I come with this 'genius' idea (alright, it's anything but a genius idea, but still) to start the engine they are sitting on. And no, I am not nice enough to turn the beacon lights on.
How likely is it that the engine gains enough suction to suck them in without they noticing it in time (considering the fact they need to standup and run for their lives)?
How long does it take for the engine to spool up enough suck a person in?
safety turbofan
edited 9 hours ago
ymb1
68.8k7218366
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
$endgroup$
add a comment |
$begingroup$
I recently found this (IMO funny) picture. All funny and all. But let's make this a real situation.
Let's suppose I see my crush and his BF doing this, and I come with this 'genius' idea (alright, it's anything but a genius idea, but still) to start the engine they are sitting on. And no, I am not nice enough to turn the beacon lights on.
How likely is it that the engine gains enough suction to suck them in without they noticing it in time (considering the fact they need to standup and run for their lives)?
How long does it take for the engine to spool up enough suck a person in?
safety turbofan
edited 9 hours ago
ymb1
68.8k7218366
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
$endgroup$
5
$begingroup$
I'm not sure why the VtC for "opinion based". Seems that there are some pretty reliable facts already posted in the answers.
$endgroup$
– FreeMan
9 hours ago
$begingroup$
Since they are both wearing ties, one would hope that'd get sucked into the core.
$endgroup$
– MikeY
6 hours ago
add a comment |
$begingroup$
I recently found this (IMO funny) picture. All funny and all. But let's make this a real situation.
Let's suppose I see my crush and his BF doing this, and I come with this 'genius' idea (alright, it's anything but a genius idea, but still) to start the engine they are sitting on. And no, I am not nice enough to turn the beacon lights on.
How likely is it that the engine gains enough suction to suck them in without they noticing it in time (considering the fact they need to standup and run for their lives)?
How long does it take for the engine to spool up enough suck a person in?
safety turbofan
edited 9 hours ago
ymb1
68.8k7218366
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
$endgroup$
I recently found this (IMO funny) picture. All funny and all. But let's make this a real situation.
Let's suppose I see my crush and his BF doing this, and I come with this 'genius' idea (alright, it's anything but a genius idea, but still) to start the engine they are sitting on. And no, I am not nice enough to turn the beacon lights on.
How likely is it that the engine gains enough suction to suck them in without they noticing it in time (considering the fact they need to standup and run for their lives)?
How long does it take for the engine to spool up enough suck a person in?
safety turbofan
safety turbofan
edited 9 hours ago
ymb1
68.8k7218366
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
edited 9 hours ago
ymb1
68.8k7218366
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
edited 9 hours ago
ymb1
68.8k7218366
edited 9 hours ago
ymb1
68.8k7218366
edited 9 hours ago
ymb1
68.8k7218366
68.8k7218366
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
asked 11 hours ago
Hugo WoesthuisHugo Woesthuis
965624
965624
5
$begingroup$
I'm not sure why the VtC for "opinion based". Seems that there are some pretty reliable facts already posted in the answers.
$endgroup$
– FreeMan
9 hours ago
$begingroup$
Since they are both wearing ties, one would hope that'd get sucked into the core.
$endgroup$
– MikeY
6 hours ago
add a comment |
5
$begingroup$
I'm not sure why the VtC for "opinion based". Seems that there are some pretty reliable facts already posted in the answers.
$endgroup$
– FreeMan
9 hours ago
$begingroup$
Since they are both wearing ties, one would hope that'd get sucked into the core.
$endgroup$
– MikeY
6 hours ago
5
5
$begingroup$
I'm not sure why the VtC for "opinion based". Seems that there are some pretty reliable facts already posted in the answers.
$endgroup$
– FreeMan
9 hours ago
$begingroup$
I'm not sure why the VtC for "opinion based". Seems that there are some pretty reliable facts already posted in the answers.
$endgroup$
– FreeMan
9 hours ago
$begingroup$
Since they are both wearing ties, one would hope that'd get sucked into the core.
$endgroup$
– MikeY
6 hours ago
$begingroup$
Since they are both wearing ties, one would hope that'd get sucked into the core.
$endgroup$
– MikeY
6 hours ago
add a comment |
3 Answers
3
active
oldest
votes
$begingroup$
(Airbus)
The suck zone ahead of a CFM56 on an A320 is less than 5 meters. The couple have enough time to take a leisurely walk toward the cockpit window.
The engine start time takes upwards of a minute (the starter is limited to four 2-minute bursts, followed by a 15 min cool down). Newer engines take longer to start.
On the neo with PW1000G engines it's 2.9 m. On the A380 it's, surprisingly, only 4.5 m.
How soon can they reunite after a shutdown? It won't be a long wait.
answered 10 hours ago
ymb1ymb1
68.8k7218366
$endgroup$
5
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
add a comment |
$begingroup$
A start on a TF all the way to idle is about 20-40 seconds depending on the engine, and the fan itself won't do more than creep a bit until the core actually lights off which is 5-10 seconds, so they'll have lots of time to get down and get away as per @ymb1's diagram, once the wheeEEEEEEEEEEtickticktickticktickticktick starts.
answered 10 hours ago
John KJohn K
23.2k13268
$endgroup$
6
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
add a comment |
$begingroup$
WHAT?? I CAN'T HEAR YOU
Before it can even start to turn the fan, the noises the engine must make will be so deafening as to force the people in that location to flee.
And even before that, there would be clunks, shakes, and vibration that would be very noticeable, and put even deaf people on notice to clear out.
There would be no mistaking the engine starting up.
answered 7 hours ago
HarperHarper
4,149724
$endgroup$
add a comment |
Your Answer
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
(Airbus)
The suck zone ahead of a CFM56 on an A320 is less than 5 meters. The couple have enough time to take a leisurely walk toward the cockpit window.
The engine start time takes upwards of a minute (the starter is limited to four 2-minute bursts, followed by a 15 min cool down). Newer engines take longer to start.
On the neo with PW1000G engines it's 2.9 m. On the A380 it's, surprisingly, only 4.5 m.
How soon can they reunite after a shutdown? It won't be a long wait.
answered 10 hours ago
ymb1ymb1
68.8k7218366
$endgroup$
5
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
add a comment |
$begingroup$
(Airbus)
The suck zone ahead of a CFM56 on an A320 is less than 5 meters. The couple have enough time to take a leisurely walk toward the cockpit window.
The engine start time takes upwards of a minute (the starter is limited to four 2-minute bursts, followed by a 15 min cool down). Newer engines take longer to start.
On the neo with PW1000G engines it's 2.9 m. On the A380 it's, surprisingly, only 4.5 m.
How soon can they reunite after a shutdown? It won't be a long wait.
answered 10 hours ago
ymb1ymb1
68.8k7218366
$endgroup$
5
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
add a comment |
$begingroup$
(Airbus)
The suck zone ahead of a CFM56 on an A320 is less than 5 meters. The couple have enough time to take a leisurely walk toward the cockpit window.
The engine start time takes upwards of a minute (the starter is limited to four 2-minute bursts, followed by a 15 min cool down). Newer engines take longer to start.
On the neo with PW1000G engines it's 2.9 m. On the A380 it's, surprisingly, only 4.5 m.
How soon can they reunite after a shutdown? It won't be a long wait.
answered 10 hours ago
ymb1ymb1
68.8k7218366
$endgroup$
(Airbus)
The suck zone ahead of a CFM56 on an A320 is less than 5 meters. The couple have enough time to take a leisurely walk toward the cockpit window.
The engine start time takes upwards of a minute (the starter is limited to four 2-minute bursts, followed by a 15 min cool down). Newer engines take longer to start.
On the neo with PW1000G engines it's 2.9 m. On the A380 it's, surprisingly, only 4.5 m.
How soon can they reunite after a shutdown? It won't be a long wait.
answered 10 hours ago
ymb1ymb1
68.8k7218366
edited 6 hours ago
answered 10 hours ago
ymb1ymb1
68.8k7218366
answered 10 hours ago
ymb1ymb1
68.8k7218366
answered 10 hours ago
ymb1ymb1
68.8k7218366
68.8k7218366
5
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
add a comment |
5
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
5
5
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
$begingroup$
And, it gets really loud immediately when the starter engages. That'll get your attention right away, followed by the fan starting to turn slowly.
$endgroup$
– Ralph J
10 hours ago
add a comment |
$begingroup$
A start on a TF all the way to idle is about 20-40 seconds depending on the engine, and the fan itself won't do more than creep a bit until the core actually lights off which is 5-10 seconds, so they'll have lots of time to get down and get away as per @ymb1's diagram, once the wheeEEEEEEEEEEtickticktickticktickticktick starts.
answered 10 hours ago
John KJohn K
23.2k13268
$endgroup$
6
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
add a comment |
$begingroup$
A start on a TF all the way to idle is about 20-40 seconds depending on the engine, and the fan itself won't do more than creep a bit until the core actually lights off which is 5-10 seconds, so they'll have lots of time to get down and get away as per @ymb1's diagram, once the wheeEEEEEEEEEEtickticktickticktickticktick starts.
answered 10 hours ago
John KJohn K
23.2k13268
$endgroup$
6
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
add a comment |
$begingroup$
A start on a TF all the way to idle is about 20-40 seconds depending on the engine, and the fan itself won't do more than creep a bit until the core actually lights off which is 5-10 seconds, so they'll have lots of time to get down and get away as per @ymb1's diagram, once the wheeEEEEEEEEEEtickticktickticktickticktick starts.
answered 10 hours ago
John KJohn K
23.2k13268
$endgroup$
A start on a TF all the way to idle is about 20-40 seconds depending on the engine, and the fan itself won't do more than creep a bit until the core actually lights off which is 5-10 seconds, so they'll have lots of time to get down and get away as per @ymb1's diagram, once the wheeEEEEEEEEEEtickticktickticktickticktick starts.
answered 10 hours ago
John KJohn K
23.2k13268
answered 10 hours ago
John KJohn K
23.2k13268
answered 10 hours ago
John KJohn K
23.2k13268
answered 10 hours ago
John KJohn K
23.2k13268
23.2k13268
6
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
add a comment |
6
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
6
6
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
I love the written description of the startup sound. +1
$endgroup$
– Pugz
8 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
From now on this is the sound of evil.
$endgroup$
– Peter
7 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
$begingroup$
@Peter It's music. Best of all is the sound of a Huey helicopter. youtube.com/watch?v=IA9knzev85I Listen carefully. There must be 4 or 5 ascending howls and groans and whines in a sequence as the, starter, engine and various gearboxes wind up in turn. It's a symphony.
$endgroup$
– John K
5 hours ago
add a comment |
$begingroup$
WHAT?? I CAN'T HEAR YOU
Before it can even start to turn the fan, the noises the engine must make will be so deafening as to force the people in that location to flee.
And even before that, there would be clunks, shakes, and vibration that would be very noticeable, and put even deaf people on notice to clear out.
There would be no mistaking the engine starting up.
answered 7 hours ago
HarperHarper
4,149724
$endgroup$
add a comment |
$begingroup$
WHAT?? I CAN'T HEAR YOU
Before it can even start to turn the fan, the noises the engine must make will be so deafening as to force the people in that location to flee.
And even before that, there would be clunks, shakes, and vibration that would be very noticeable, and put even deaf people on notice to clear out.
There would be no mistaking the engine starting up.
answered 7 hours ago
HarperHarper
4,149724
$endgroup$
add a comment |
$begingroup$
WHAT?? I CAN'T HEAR YOU
Before it can even start to turn the fan, the noises the engine must make will be so deafening as to force the people in that location to flee.
And even before that, there would be clunks, shakes, and vibration that would be very noticeable, and put even deaf people on notice to clear out.
There would be no mistaking the engine starting up.
answered 7 hours ago
HarperHarper
4,149724
$endgroup$
WHAT?? I CAN'T HEAR YOU
Before it can even start to turn the fan, the noises the engine must make will be so deafening as to force the people in that location to flee.
And even before that, there would be clunks, shakes, and vibration that would be very noticeable, and put even deaf people on notice to clear out.
There would be no mistaking the engine starting up.
answered 7 hours ago
HarperHarper
4,149724
answered 7 hours ago
HarperHarper
4,149724
answered 7 hours ago
HarperHarper
4,149724
answered 7 hours ago
HarperHarper
4,149724
4,149724
add a comment |
add a comment |
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5
$begingroup$
I'm not sure why the VtC for "opinion based". Seems that there are some pretty reliable facts already posted in the answers.
$endgroup$
– FreeMan
9 hours ago
$begingroup$
Since they are both wearing ties, one would hope that'd get sucked into the core.
$endgroup$
– MikeY
6 hours ago