Author Topic: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived  (Read 9136 times)

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Online Brumby

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http://www.abc.net.au/news/2016-07-31/us-skydiver-leaps-from-plane-with-no-parachute/7675822

https://youtu.be/aOBavry0K2E

"Pay attention to the science and the math behind this. And we'll show you what's possible," Mr Aikins said.


How good is your science and math....?

(I believe mine is OK - but I think I'll be limiting my risk to cutting some timber too short - or letting out some magic smoke.........)


Edit: Add direct YT link.
« Last Edit: July 31, 2016, 11:53:49 pm by Brumby »
 

Offline ez24

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Re: Skydiver-leaps-from-plane-with-no-parachute
« Reply #1 on: July 31, 2016, 06:41:22 am »
I would add this to the title:  "and lived"
amazing
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Online Brumby

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Title changed....  :D
 

Offline Assafl

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I would say experience more than science. Even then he was damn close to the edge of the top net...

Very impressive indeed.
 

Online Brumby

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Experience found the target.  Maths and science made it survivable without any(?) injury.
 

Offline German_EE

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I can't find them right now but there are records of pilots and/or bomber crew members who fell from a great height and survived, this is bringing it up to date. When I was young and foolish I did freefall parachuting for a while but I always made sure that I had a main chute and a reserve, this is slightly on the side of crazy.
Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

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Offline H.O

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Slightly? I was just watching the dude on Youtube AND knew he'd make it and my heartrate was still at 150 - just as his :-)
I don't know what he's trying to proove but a great stunt for sure. What's next? Oh those adrenaline junkies.
 

Offline Wytnucls

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I can't find them right now but there are records of pilots and/or bomber crew members who fell from a great height and survived, this is bringing it up to date. When I was young and foolish I did freefall parachuting for a while but I always made sure that I had a main chute and a reserve, this is slightly on the side of crazy.

Who needs a net:

https://en.wikipedia.org/wiki/Nicholas_Alkemade
 

Online EEVblog

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I would say experience more than science. Even then he was damn close to the edge of the top net...

Yep, totally experience at play here.
Probably similar odds of survival as those wingsuiters who target 2m wide holes in rocks.


Do this 10 times and odds are you will eventually miscalculate.
 

Offline TheAmmoniacal

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Terminal velocity in that position is about 140 km/h (~38 m/s), he seems to reach 0 km/h in about 2 seconds. That's a g-force of deceleration of about (39/2)/9.81 = 2g. Which is not a lot.
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Offline Jwalling

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Crazy! Interesting effect where it looks like jet vapors coming out of their feet. I wonder what causes that?

Jay
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Offline TheAmmoniacal

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Crazy! Interesting effect where it looks like jet vapors coming out of their feet. I wonder what causes that?

Jay

Those are smoke canisters, people skydive with those for .. the effect.
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Offline German_EE

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Plus it's easier for people on the ground to track them.
Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

Warren Buffett
 

Offline TheAmmoniacal

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Plus it's easier for people on the ground to track them.

That's probably the main reason in this case, people on the ground might be providing maneuver/navigation instructions.
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Offline BradC

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That wa so cool, even my wife watched it twice.
 

Offline German_EE

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"That's probably the main reason in this case, people on the ground might be providing manoeuvr/navigation instructions."

Left a bit, back a bit.

SPLAT!!

Oooops, my bad  8)
Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

Warren Buffett
 

Offline Assafl

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I would say experience more than science. Even then he was damn close to the edge of the top net...

Yep, totally experience at play here.
Probably similar odds of survival as those wingsuiters who target 2m wide holes in rocks.


Do this 10 times and odds are you will eventually miscalculate.

Don't have to miscalculate. Do it 10 times and eventually the wind will change mid-stunt....

As usual it is a question of level of exposure to the risk.
 

Offline zapta

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One report I read says that he planned to jump without a parachute but was forced to carry one which made the trick even more dangerous.
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Offline timb

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One report I read says that he planned to jump without a parachute but was forced to carry one which made the trick even more dangerous.

I watched it live and here's the story on that:

Before he got on the plane, he was "told" that he "had" to wear one, however just before he reached the 25,000ft jump altitude, he "decided" that he "wouldn't" wear it, and jumped without. (I put those words in quotes because I find it very dubious. Who said he had to wear it? The lawyers? Who's lawyers? Stride Gum? Fox? Personally, I think it was just a bit of drama to hype the jump.)

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Offline Jwalling

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Crazy! Interesting effect where it looks like jet vapors coming out of their feet. I wonder what causes that?

Jay

Those are smoke canisters, people skydive with those for .. the effect.

That makes sense. I was thinking it might have been some sort of turbulence effect. :-[

Jay
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Offline rx8pilot

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If I did survive, my wife would kill me shortly after.

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Offline albert22

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The linked video was removed by copyright issues, but it is still on youtube,
Although a very dangerous stunt, it is no so foolish as it looks . It seems that he jumps with 3 support guys which can assist/rescue him if he decides to abort. Assuming that the video is uncut,  the support team open their parachutes leaving Aikins by himself just 16 seconds before he hits the net. By that time Aikins should be pretty sure that will hit the net. Taking account  terminal velocity the "decision altitude" can be calculated.
IMO  he was very far from the center of the net, leaving him, what? 1/4 security margin ?
 

Offline zapta

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If I did survive, my wife would kill me shortly after.

Sent from my horrible mobile....
Or ask you to try again.
Drain the swamp.
 

Offline SeanB

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I can't find them right now but there are records of pilots and/or bomber crew members who fell from a great height and survived, this is bringing it up to date. When I was young and foolish I did freefall parachuting for a while but I always made sure that I had a main chute and a reserve, this is slightly on the side of crazy.

Who needs a net:

https://en.wikipedia.org/wiki/Nicholas_Alkemade

That was my father's tale as well. He was a pilot on a bombing run, flying over Lake Constance, and the last he remembered was the aircraft on fire, him telling his guys to bail out, and his parachute being on fire. Till he died he still had the massive scar on his back, and the shrapnel embedded throughout his body.
 

Offline ez24

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The linked video was removed by copyright issues, but it is still on youtube,

Here is a YT link.  OP you should change the link in your first post to this one or a better one.  When I clicked on it, I got a 4 min commercial from Arrow.com that was entertaining (dev boards).  (Google remembers my last search (on dev boards)  :-DD :-DD :-DD )



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Offline Fred27

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He's not the first guy to jump out of a plane without a parachute. Remember this from Travis Pastrana?

https://youtu.be/KRLzvPioKG0
 

Offline strangersound

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Re: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #26 on: August 01, 2016, 12:32:30 am »
He's not the first guy to jump out of a plane without a parachute. Remember this from Travis Pastrana?

https://youtu.be/KRLzvPioKG0

Wonder how much Red Bull paid him for that? ;)
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Offline SkyMaster

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Re: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #27 on: August 01, 2016, 02:12:31 am »
The linked video was removed by copyright issues, but it is still on youtube,
Although a very dangerous stunt, it is no so foolish as it looks . It seems that he jumps with 3 support guys which can assist/rescue him if he decides to abort. Assuming that the video is uncut,  the support team open their parachutes leaving Aikins by himself just 16 seconds before he hits the net. By that time Aikins should be pretty sure that will hit the net. Taking account  terminal velocity the "decision altitude" can be calculated.
IMO  he was very far from the center of the net, leaving him, what? 1/4 security margin ?

Hitting a bird at low altitude was probably the biggest risk, that could have sent him off target; that would have hurt  :phew:
 

Offline zapta

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Re: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #28 on: August 01, 2016, 02:35:53 am »


...Who said he had to wear it? The lawyers? Who's lawyers? Stride Gum? Fox? Personally, I think it was just a bit of drama to hype the jump.)

IIRC, it was due to union rules. The viddeographers are not allowed to film actors that don't obey the actor guild rules or something like that.

Drain the swamp.
 

Offline timb

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Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #29 on: August 01, 2016, 10:46:26 am »


...Who said he had to wear it? The lawyers? Who's lawyers? Stride Gum? Fox? Personally, I think it was just a bit of drama to hype the jump.)

IIRC, it was due to union rules. The viddeographers are not allowed to film actors that don't obey the actor guild rules or something like that.

But, he's not an actor.. He's a stuntman, right?

You know, when they initially said he had to wear a parachute, I kind of lost interest, I mean, the whole reason it's interesting is precisely because he wasn't wearing one. It would be like someone tight rope walking between two skyscrapers, only he's wearing a harness clipped to a safety line, in case he falls.

Speaking of which, I wonder what sort of time delay they had the live broadcast on, incase he missed?
« Last Edit: August 01, 2016, 10:59:42 am by timb »
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Offline StuUK

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Re: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #30 on: August 01, 2016, 11:52:24 am »


...Who said he had to wear it? The lawyers? Who's lawyers? Stride Gum? Fox? Personally, I think it was just a bit of drama to hype the jump.)

IIRC, it was due to union rules. The viddeographers are not allowed to film actors that don't obey the actor guild rules or something like that.

But, he's not an actor.. He's a stuntman, right?

You know, when they initially said he had to wear a parachute, I kind of lost interest, I mean, the whole reason it's interesting is precisely because he wasn't wearing one. It would be like someone tight rope walking between two skyscrapers, only he's wearing a harness clipped to a safety line, in case he falls.

Speaking of which, I wonder what sort of time delay they had the live broadcast on, incase he missed?

Stuntmen are still members of the SAG.
 

Offline timb

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Re: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #31 on: August 01, 2016, 11:54:42 am »


...Who said he had to wear it? The lawyers? Who's lawyers? Stride Gum? Fox? Personally, I think it was just a bit of drama to hype the jump.)

IIRC, it was due to union rules. The viddeographers are not allowed to film actors that don't obey the actor guild rules or something like that.

But, he's not an actor.. He's a stuntman, right?

You know, when they initially said he had to wear a parachute, I kind of lost interest, I mean, the whole reason it's interesting is precisely because he wasn't wearing one. It would be like someone tight rope walking between two skyscrapers, only he's wearing a harness clipped to a safety line, in case he falls.

Speaking of which, I wonder what sort of time delay they had the live broadcast on, incase he missed?

Stuntmen are still members of the SAG.

Learn something new every day! I always assumed they had their own Union, specific to stunt people.
Any sufficiently advanced technology is indistinguishable from magic; e.g., Cheez Whiz, Hot Dogs and RF.
 

Offline StuUK

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Re: Skydiver-leaps-from-plane-with-no-parachute DELIBERATELY .... and lived
« Reply #32 on: August 01, 2016, 12:04:00 pm »


...Who said he had to wear it? The lawyers? Who's lawyers? Stride Gum? Fox? Personally, I think it was just a bit of drama to hype the jump.)

IIRC, it was due to union rules. The viddeographers are not allowed to film actors that don't obey the actor guild rules or something like that.

But, he's not an actor.. He's a stuntman, right?

You know, when they initially said he had to wear a parachute, I kind of lost interest, I mean, the whole reason it's interesting is precisely because he wasn't wearing one. It would be like someone tight rope walking between two skyscrapers, only he's wearing a harness clipped to a safety line, in case he falls.

Speaking of which, I wonder what sort of time delay they had the live broadcast on, incase he missed?

Stuntmen are still members of the SAG.

Learn something new every day! I always assumed they had their own Union, specific to stunt people.

No and in fact it's pretty much closed shop, you need to be a member to get work.
 


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