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Old 07-11-2018, 10:13 PM   #1
Tuna-Salad
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Default Supersonic Ejection

Punching out at mach speed should kill the pilot. Just sayin...
There was a story of F-15 pilot that survived, but it seriously F***** him up.
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Old 07-11-2018, 10:54 PM   #2
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Quote:
Originally Posted by Tuna-Salad View Post
Punching out at mach speed should kill the pilot. Just sayin...
There was a story of F-15 pilot that survived, but it seriously F***** him up.
Yeah, it's normally, what, less than 300 KIAS for safe punch outs?
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Old 07-12-2018, 12:10 AM   #3
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As I read somewhere, there's not that many times it's really happened (planes are not usually supersonic, and pilots try ride the aircraft to sub-sonic speeds if they can), but when they have to, it's not instant death.

2 crew of a surveillance version of the SR-71 ejected at M 3.25, both survived the ejection (one drowned after landing in the ocean).
Add in that you know the F-15 pilot above survived,
George Franklin Smith ejected from an F-100 at M 1.1 in 1955 and survived,
Jon “Jughead” Counsell ejected from a supersonic F-15 in 1996,

So a couple of minutes searching turned up 5 Western pilots that have survived supersonic ejection (plus a guy who did it from a rocket sled at > M1 at ground level as part of testing, so 6 really), then take into account that the Russians have always built better ejection seats than the West anyway & presumably that means there will be some Russian survivors.

Doesn't seem to lead to a conclusive "Punching out at mach speed should kill the pilot..."
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Old 07-12-2018, 12:13 AM   #4
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what, do you think the sound barrier is a wall that smacks the pilot lmfao
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Old 07-12-2018, 01:42 AM   #5
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Oh I think they're right that it's a pretty brutal experience that can kill you, but it's not quite a miracle if you survive.

Even sub-sonic, you can end up in hospital.
There's an account by a Lightning pilot who ejected at M 0.98 & ended up with his leg broken sideways at the knee and his arm broken sideways at the elbow
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Old 07-12-2018, 02:38 AM   #6
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The SJU-17 is a 0-600 knot and at an altitude 0-50,000 ft ejection seat. I worked on these for seven years. Well mostly I worked the SJU-5 which was the predecessor to the NACES but I did work on a few of those as well at 125. It’s not the seat that can’t function. But the human body can only take so much. But it is survivable, you just won’t be having a good day if you do.
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Old 07-12-2018, 03:47 AM   #7
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Quote:
Originally Posted by Weta43 View Post

.......then take into account that the Russians have always built better ejection seats than the West anyway & presumably that means there will be some Russian survivors.
Really!!!!
I'd like to know where you pulled this info out from?

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Old 07-12-2018, 04:18 AM   #8
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You would also have to account for air density / eject speed for the survivability of the ejection.
At the SR-71 heights you can free fall at Mach 1.25.

Skydiver hit Mach 1.25
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Old 07-12-2018, 10:22 AM   #9
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Quote:
Originally Posted by probad View Post
what, do you think the sound barrier is a wall that smacks the pilot lmfao
Depending on altitude and air density.. yes.. suddenly hitting the wind will destroy you. I am active skydiver and have jumped from DC-9, 200 knot exit speed is pretty brutal. From zero to.. bam.... Per the other guy talking about the skydiver that hit mach.. he was MUCH higher than the SR-71 could fly. It is worth noting that in the skydiver manual prior to him doing that jump the effects of supersonic flight were unknown on the human body. It makes sense that when going faster than the speed of sound you are past the shock wave so it will not affect. However in the case of ejecting at high speed... you would not come out of it in good health.

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Old 07-12-2018, 10:31 AM   #10
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Everyone knows that ejecting is a traumatic experience, and the faster you're flying the more violent the slipstream will be.

I hardly think that at Mach .99 you'll survive, and Mach 1.0 you're a dead man. And once you've punched out, it is endex anyway, so what difference does it make whether you'd be injured or not?
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