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Another Red Arrows accident

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rac3r
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PostPosted: 17:46 - 08 Nov 2011    Post subject: Another Red Arrows accident Reply with quote

https://www.telegraph.co.uk/news/uknews/defence/8877315/Red-Arrows-pilot-dies-after-ejector-seat-accident.html
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stinkwheel
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PostPosted: 22:42 - 08 Nov 2011    Post subject: Reply with quote

I find it highly unlikely that the 'chute on a Martin Baker ejector seat failed to open under normal flying conditions. They are DESIGNED to work with the aircraft static and still on the tarmac and most of the testing is carried out at ground level (hence a zero-zero ejector seat).

I wonder if it was deployed accidentally with the canopy partially open or some of the safety pins still in place?
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The Artist
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PostPosted: 22:51 - 08 Nov 2011    Post subject: Reply with quote

Apparently those ejector seats can generate up to 14g (for a split second).

Not jealous of anyone who had to use one.

Sounds like an unfortunate accident.
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pinkyfloyd
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PostPosted: 22:53 - 08 Nov 2011    Post subject: Reply with quote

From the looks of it when it was on the news it seemed to me that the ejector seat went and the canopy that is designed to seperate from the plane didnt and the pilot went through the glass. That possibly could have broken the pilots neck on the way through the glass.

Either way that will be the planes grounded for a long time and possibly scrapped for newer models.
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stinkwheel
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PostPosted: 23:13 - 08 Nov 2011    Post subject: Reply with quote

pinkyfloyd wrote:
From the looks of it when it was on the news it seemed to me that the ejector seat went and the canopy that is designed to seperate from the plane didnt and the pilot went through the glass. That possibly could have broken the pilots neck on the way through the glass.

Either way that will be the planes grounded for a long time and possibly scrapped for newer models.


Perhaps more relevant to the situation would be why the seat was deployed in the first place. Did the pilot intentionally try to leave the aircraft? In which case, given the condition of the plane now (ie in one piece and sat on the runway) why? If he didn't, how the hell did the seat deploy?

If the seat deployed unintentionally, I suspect someone, somewhere has been fiddling with something that they ought not to have been fiddling with because ejector seats don't just go-off all by themselves.
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The Artist
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PostPosted: 23:34 - 08 Nov 2011    Post subject: Reply with quote

They were doing winter training so surely nothing will be running, it must have been a freak accident.

Still, we aren't going to know until they do an investigation.
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DXB
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PostPosted: 04:52 - 09 Nov 2011    Post subject: Reply with quote

There has been many instances where the seats have been fired unintentionally and a few people have ended up as a splat mark on hanger ceilings, this has mainly been caused by not having all the safety pins installed.

Here's some urban myths.

1 chap working on a Harrier seat, the seat fired whilst he was stood on the seat facing the tail he did a few backward somersaults and landed on his feet on the floor in front of the nose of the jet.

Another guy working on a Lightning seat accidentally fired it, again due to all the pins not being installed, in the milliseconds of time he had he managed to squeeze himself between the seat pan and joy stick and watched the seat exit through the hanger roof.

In all the time i spent in the RAF i regarded the ejection seats to be the most dangerous things i had to work on.
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WildGoose
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PostPosted: 08:21 - 09 Nov 2011    Post subject: Reply with quote

Quote:
From the looks of it when it was on the news it seemed to me that the ejector seat went and the canopy that is designed to seperate from the plane didnt and the pilot went through the glass. That possibly could have broken the pilots neck on the way through the glass.


Pretty sure you go through the glass on the Hawk, you can see the mild detonating cord on the canopy in most pictures of a red arrows hawk.

I was under the impression that things have to happen in order and the canopy would blow before the seat tried to go through it.

The Harrier I recall, had six separate safety devices, (5 pins and a lever) to stop it going off in the Hanger, when being prepped for flight on the line, 4 safety devices were removed by a very few select qualified armourer people, leaving the final 2 for the pilot to arm, just before take off.

Something must have gone terribly wrong, be interested to hear the outcome. Martin Baker really make some good kit, and the amount of contingencies their seats are designed to cope with, should mean that this sort of thing never happens. Somebody is probably to blame.

Working around the seats certainly made me nervous, and it wasn't uncommon to call the pilot back to put the seat to safe if he had forgotten.

RIP to the pilot, the red arrows seems to be one of the most hazardous jobs in the air force of late.

Quote:
In all the time i spent in the RAF i regarded the ejection seats to be the most dangerous things i had to work on.


On the Harrier it was the front undercarriage doors that did it for me. Had many nightmares of being chopped in half.
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Raffles
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PostPosted: 08:45 - 09 Nov 2011    Post subject: Reply with quote

Ejector seat incidents are not everyday occurences but they are not unheard of.
I don't know whether or not this recent incident has any relevance to yesterday's events:-
https://www.dailymail.co.uk/news/article-1321561/Pilot-Mike-Harland-killed-seat-fell-RAF-Tornado-jet-flew-upside-down.html
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stinkwheel
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PostPosted: 11:05 - 09 Nov 2011    Post subject: Reply with quote

Here's a not urban myth heard firsthand from someone who was there.

Airman leaning into the cockpit messing with the electrics on a Lightning. Pins not put in seat. Shorts something out, seat fires into roof of HAS, takes guys arm with it.

Military jets are dangerous things which are designed to kill people.

The ejector seat/undercarriage doors etc are actually NOT the most dangerous parts, they have weapons for that sort of thing.

Tell you another story.

Harrier aboard an aircraft carrier. A technician was working on the electrics on the control column, then cycled the Aden gun to check it was all connected up properly. Turns out there was still "one up the pipe". The resulting 30mm armour piercing shell goes through a bulkhead and hits someone in the next compartment killing them instantly.

Armourer jailed then discharged.
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stinkwheel
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PostPosted: 11:08 - 09 Nov 2011    Post subject: Reply with quote

Raffles wrote:

I don't know whether or not this recent incident has any relevance to yesterday's events:-
https://www.dailymail.co.uk/news/article-1321561/Pilot-Mike-Harland-killed-seat-fell-RAF-Tornado-jet-flew-upside-down.html


This happened in a couple of jet provosts the RAF sold off to the civillian market. First time the new owner flew them inverted and hit negative G the seat fell out through the cockpit.
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Rogerborg
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PostPosted: 11:23 - 09 Nov 2011    Post subject: Reply with quote

stinkwheel wrote:
Here's a not urban myth heard firsthand from someone who was there.


With respect, everyone on that base or with that unit will now swear blind that they got bits of ulna in their tea.
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Kickstart
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PostPosted: 11:36 - 09 Nov 2011    Post subject: Reply with quote

Hi

No doubt what actually happened will come out.

It does seem strange that the parachute failed to deploy on an ejector seat designed to cope with low level use.

However I wonder if that would be the result from the ejector seat being triggered before the pilot was strapped in / after the pilot was unstrapped. The photo floating around of the aircraft appears to show it on the pan with others, possibly suggesting the incident happened when they were preparing for flight.

I would presume that procedure wise they are meant to only finish arming the seat once the pilot is strapped in, but from Gooses comment on calling pilots back to disarm the seats after the have left the aircraft I presume this is something that doesn't always happen.

All the best

Keith
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DXB
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PostPosted: 12:18 - 09 Nov 2011    Post subject: Reply with quote

stinkwheel wrote:
I find it highly unlikely that the 'chute on a Martin Baker ejector seat failed to open under normal flying conditions. They are DESIGNED to work with the aircraft static and still on the tarmac and most of the testing is carried out at ground level (hence a zero-zero ejector seat).

I wonder if it was deployed accidentally with the canopy partially open or some of the safety pins still in place?


Not sure if Hawks have explosive bolts to jettison the canopy or cordex imbedded, if the drogue gun pin was installed the chute would not deploy.
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Dex
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PostPosted: 02:37 - 10 Nov 2011    Post subject: Reply with quote

pinkyfloyd wrote:
From the looks of it when it was on the news it seemed to me that the ejector seat went and the canopy that is designed to seperate from the plane didnt and the pilot went through the glass. That possibly could have broken the pilots neck on the way through the glass.

Either way that will be the planes grounded for a long time and possibly scrapped for newer models.



Hawks use MDC in the canopy to shatter the canopy rather than jettison it, the head box on the seat also has Horns to bust the canopy if the MDC fails to fire.

An accidental (I will assume it's accidental) firing of the ejection seat is nothing to do with the age of the aircraft. Mk10 seats on the Hawk are very similar to the seats on the Tornado and the MK8 seat on the more modern Tucano (Mk8 is effectively a lightweight Mk10 with no rocket pack)


Last edited by Dex on 02:43 - 10 Nov 2011; edited 1 time in total
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Dex
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PostPosted: 02:41 - 10 Nov 2011    Post subject: Reply with quote

stinkwheel wrote:

Airman leaning into the cockpit messing with the electrics on a Lightning. Pins not put in seat. Shorts something out, seat fires into roof of HAS, takes guys arm with it.


Ejection seat cartridges are fired by percussion not electrically.

stinkwheel wrote:

Harrier aboard an aircraft carrier. A technician was working on the electrics on the control column, then cycled the Aden gun to check it was all connected up properly. Turns out there was still "one up the pipe". The resulting 30mm armour piercing shell goes through a bulkhead and hits someone in the next compartment killing them instantly.

Armourer jailed then discharged.


Aden gun is fired electrically, by cycled (to cock in or cock out) using compressed nitrogen. The only way to fire one is to cock in then send a firing signal to the EFU. So the gun would have had to have not been unloaded properly, then the guy doing functionals on the control column would have had to over-ride the ground safeties to send the firing pulse. *IF* he was doing a firing check he'd have had test kit connected to the end of the firing cable, not had it connected to the gun
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DXB
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PostPosted: 03:01 - 10 Nov 2011    Post subject: Reply with quote

Dex wrote:
stinkwheel wrote:

Airman leaning into the cockpit messing with the electrics on a Lightning. Pins not put in seat. Shorts something out, seat fires into roof of HAS, takes guys arm with it.


Ejection seat cartridges are fired by percussion not electrically.

stinkwheel wrote:

Harrier aboard an aircraft carrier. A technician was working on the electrics on the control column, then cycled the Aden gun to check it was all connected up properly. Turns out there was still "one up the pipe". The resulting 30mm armour piercing shell goes through a bulkhead and hits someone in the next compartment killing them instantly.

Ex Plumber by any chance.

Armourer jailed then discharged.


Aden gun is fired electrically, by cycled (to cock in or cock out) using compressed nitrogen. The only way to fire one is to cock in then send a firing signal to the EFU. So the gun would have had to have not been unloaded properly, then the guy doing functionals on the control column would have had to over-ride the ground safeties to send the firing pulse. *IF* he was doing a firing check he'd have had test kit connected to the end of the firing cable, not had it connected to the gun

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