Ejection Sequence in A10

[636_Castle]

Every time I see that Mig29 ejection video of when he loses his engine, I'm amazed. One of the luckiest bailouts in history :eek:

 

@mvsgas

 

Here's an ACES II ejection out of level flight:

 

[Slayer]

Here's an ACES II ejection out of level flight:

 

 

 

Wow man...F117 goes down in flames and all announcer dude can say is "buy more pepsi product for your kids"...No wonder it was the last airshow in Maryland

[bumfire]

Check the video at 2:39. That is the same system used in the KA-50 correct?

 

I can't seem to remember nor have I seen any videos with ACES II ejection other than level flight, have you guys found any? What I mean is, I can't remember aircraft departing flight and then seen a ejection.

 

No, If I remember, it was something that nasa used for either the space shuttle or some other type of rocket, possibly the apollo rockets ? Also the KA50 seat leaves the helo unlike in the video, slightly similar but not the same.

 

Dont think they use them now though, as the tv show that I saw had the astronauts either in a cage connected to a zip line that took the people away from the shuttle if they were lucky enough to spot trouble before take off, they would leave shuttle and enter a basket thats connected to the tower and zip line to safety or they had a hand line that lowered them to the ground, the hand lines were plugged into somewhere on the shuttle so that they could slowly descend the outside of the shuttle.

 

TBH, I think it was useless, as if their ever was a problem, chances are that it would blow up before they could do anything.

 

Kinda like the the useless safety rocket on top of the apollo rockets, the one meant to drag the capsule to safety in the event of trouble/rocket blew up, they said it was useless because if they noticed trouble, the rocket would blow up in 1 or 2 seconds, but in order for the safety system to work, it needed about 4 seconds for the eject system radio signals to effect the ejection, by that time the rocket and its occupants would of been destroyed.

Edited July 15, 2010 by bumfire

[mvsgas]

Every time I see that Mig29 ejection video of when he loses his engine, I'm amazed. One of the luckiest bailouts in history :eek:

 

@mvsgas

 

Here's an ACES II ejection out of level flight:

 

Thanks, the aircraft is still pretty level tho, as oppose to other ejections where the aircraft is going straight down or tumbling. The main thing I'm looking for is trying to see the vernier rocket trying to maintain pitch. I tried looking for test track videos or testing of the seat but could not find photos/videos of it.

:thumbup: Thanks anyway

 

Now talking about the A-10 ejection I wonder how close to the F-15 or F-16 is the sequence.

Does the canopy on the A-10 has rockets of ejectors? In the F-16 it has rockets while on the F-117 it had ejectors. Ejector are like catapults basically.

 

The seat should be basically the same except for the placement of the handles.

[vrv]

The Youtube embed thing isn't working but I'll link it directly.

 

 

Let's hope they are more reliable :joystick: :D

[Tornado_Pilot]

Hey, i'm amazed that my former thoughts of "hey, this won't be noticed by much" turned out to be wrong.

 

I think, it shouldn be that hard to model the seat after the charts and curves posted here.

 

Also,i haven't asked for a 1:1 Simulation of the Seat, but just a greatly enhanced fidelity.

 

If you want a real sim of all common ejection seats, there was a Korean guy who did so.

 

Just visit http://ejectionseat.com.ne.kr/

[bumfire]

Tornado Pilot, I dont know about anyone else, but I love the ejection sequence, am kinda dirty that way.

 

but seriously, I have loads of cool ejection shots form lockon, whne I know I am gunna crash I simply pause and slow the rate down to 0.2 and then push ctrl+Y twice and unpause and then start taking screenies.

 

here is one for your pleasure. ;)

 

[starbird]

No, If I remember, it was something that nasa used for either the space shuttle or some other type of rocket, possibly the apollo rockets ? Also the KA50 seat leaves the helo unlike in the video, slightly similar but not the same.

 

It looks like an early test for some sort of STS escape system, but nothing like that has ever been used (as far as I can recall). The current system uses a drogue line out of the hatch. If a bailout is called for, a certain autopilot mode is enabled to keep a steady altitude, and the astros would jump out of the hatch on the drouge line, which just makes sure that they don't come in contact with the orbiter while jumping.

 

The Gemini capsules was equipped with ejection seats, but no one is sure that an ejection would be survivable once the titan lifted off. There were I believe 2 instances where they were almost used. One was Gemini 6A, where the clock and engines started, but the rocket never left the pad. If the rocket moved from the ignition, it would have tipped over. Fortunately no one ejected and the rocket really didn't leave the pad.

 

Orbiter Columbia was equipped with 2 ejection seats for its first missions. They were going to be a part of every orbiter, but the pilots didn't like the idea of armed ejection seats on orbit, and if there were more than 2 crew they would've been left behind. I don't remember when the seats were taken out.

 

 

TBH, I think it was useless, as if their ever was a problem, chances are that it would blow up before they could do anything.

 

Thats the tower escape system zipline (don't remember the actual name). There is a M113 at the bottom that the crew would pile into and drive to a safe location. The uses are limited, but its mostly there in case of a hydrogen leak or some other emergency where they need to leave the pad quickly (rather than take the elevator), but have enough time to do it.

 

Kinda like the the useless safety rocket on top of the apollo rockets, the one meant to drag the capsule to safety in the event of trouble/rocket blew up, they said it was useless because if they noticed trouble, the rocket would blow up in 1 or 2 seconds, but in order for the safety system to work, it needed about 4 seconds for the eject system radio signals to effect the ejection, by that time the rocket and its occupants would of been destroyed.

 

I've never heard of this. Do you have any references? The LES on manned rockets is a totally isolated system, there is no need for communication. It can be activated manually, but otherwise its fully automatic. With the testing that these systems go through I find it hard to believe that the apollo LES would under perform. The apollo system never needed to be used, but the whole point is to save the crew in case of a rocket blowing up. If it wouldn't work, there are better places to put the weight if a system doesn't work.

 

I know of 2 instances where the LES has been needed and used successfully (100% success rate). The first was on the unmanned MA-1, where the rocket didn't perform its pitch maneuver and was destructed from ground. The abort system noticed that the rocket was failing after the abort system activated and successfully propelled the capsule away. Its some pretty impressive video, unfortunately it doesn't seem to be online anywhere. I have it on a spacecraftfilms dvd (liftoff!).

 

The second was a soyuz that erupted after ignition. I believe Max Faget got a medal from the Russians after he asked for one when talking to one of the Cosmonauts. He designed the Mercury LES along with the capsule itself and life support system IIRC, which has been copied by everyone for use in capsule rockets.

 

Sorry for the long post, but aerospace is my thing.

[bumfire]

Yup, the escape rocket ontop of the Apollo rockets wouldnt of pulled the re-entry module away from the apollo in time before the rocket blew up.

 

Its on a nasa documentary that was all about the moon landings, the people in command knew about it, not sure if the astronauts knew about it before hand, but they do know about it now as they were on the same programme when it was discussed.

 

It would of taken roughly 4 or 5 seconds for some signal or something to get the escape system to kickin and start to work, by that time the rocket would of been destroyed. Basically the system they speak off was activated by the people on the ground and the signals would of taken to long to get the thing to work before the thing blew up.

 

Now, thats people at nasa saying it, not me, I am only saying what was on the programme, I suppose in certain conditions it might of worked, but if the apollo rocket blew up, or started to they wouldnt of had time to escape so they say.

 

I have a few, well more than a few nasa docos on my harddrive, it will be in one of them, I will have a hunt through them and then host it for you if you are interested, and you see them explain that the escape system and how it was there for show more than anything.

[Slayer]

In related news:

 

http://photoblog.msnbc.msn.com/_news/2010/07/23/4739027-pilot-ejects-an-instant-before-fighterjet-crashes

[Avilator]

In related news:

 

http://photoblog.msnbc.msn.com/_news/2010/07/23/4739027-pilot-ejects-an-instant-before-fighterjet-crashes

That second picture just looks so wrong!

I read the comments and one poster said that to him it looked like the right engine failed. I generally agree with his logic, based on the nozzles being at different positions, and the flames at impact. However, it seems to me that the failure of one engine would not cause such an uncontrollable roll rate given that they are right next to each other. Would the roll authority not be enough to counter that?

[starbird]

I have a few, well more than a few nasa docos on my harddrive, it will be in one of them, I will have a hunt through them and then host it for you if you are interested, and you see them explain that the escape system and how it was there for show more than anything.

 

 

That would be great if you don't mind.

 

After some scrounging, I found that the LES motors were a bit anemic. The portion of launch that the system could handle was relatively small. It wasn't quite useless, but it couldn't handle every emergency. Would be interesting to see if the documents describe the envelope.

 

I would think the astronauts knew about the shortcomings of their equipment. Most were aerospace engineers themselves.

Edited July 24, 2010 by starbird
Found some info

[Bwaze]

... However, it seems to me that the failure of one engine would not cause such an uncontrollable roll rate given that they are right next to each other. Would the roll authority not be enough to counter that?

 

 

Not if the aircraft stalled. Flying very low near the airfield also for most of the time means very slow, and loss of an engine usually means big problems really fast. Airspeed drops really quickly, and this can lead to numbers well below stall speed. There's not much the pilot can do.

[Sticky]

In related news:

 

http://photoblog.msnbc.msn.com/_news/2010/07/23/4739027-pilot-ejects-an-instant-before-fighterjet-crashes

 

 

The first picture, that looks like a very bad angle to have your head in an ejection with all those Gs.. Is that normal? Will he be alright after that?

[Shaman]

ED could contact this guy and implement his code.

Ejection Seat Simulator: http://ejectionseat.com.ne.kr/

I have it for years. it is free, but very good simulation. It simulates programs of most popular ejection seats. Lot's of fun customizing it or replaying historic ejections.

[andysim]

http://www.youtube.com/watch?v=xz8fOZxIdVg&feature=related Guy ejects underwater, ouch!!:megalol::lol: