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If a pilot ejects, what is the autopilot programmed to do? (2018)

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11–20 of 74 posts

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#11

A pilot would only eject if the aircraft was uncontrollable with no reasonable hope for recovery. Unlikely the autopilot can do anything deliberate at that point.

Yes, but the autopilot should have some kind of contingency programming in case the pilot is mistaken about the aircraft being unflyable.

If this was possible it would just be part of regular flight control laws and would be used to avoid becoming uncontrollable in the first place.

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#12
post #4

I think the most proper thing for the jet should be to destroy itself. In a war enviornment I would not like my enemy to gain intel about my military jets.

Not my wheelhouse, but doesn't that involve packing the aircraft with explosives, and wouldn't that involve risk of blowing up if someone else shoots you? Or is there some better way to self-destruct?

Jets are usually full of jet fuel that can blow up if someone else shoots you, or they run into the ground.

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#13
post #4

I think the most proper thing for the jet should be to destroy itself. In a war enviornment I would not like my enemy to gain intel about my military jets.

Would you go near a plane that's an electronic signal away from blowing itself up?

Even if mechanical, warplanes get combat damage, and having a system like that could make a difference between survivable and sure death.

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#14

Earlier quoted context omitted.

Yes, but the autopilot should have some kind of contingency programming in case the pilot is mistaken about the aircraft being unflyable.

If this was possible it would just be part of regular flight control laws and would be used to avoid becoming uncontrollable in the first place.

Huh? If I'm the human pilot, I can pull the ejection lever for multiple reasons, including my just being an idiot. The plane, after I eject, should do something reasonable. Maybe it

* starts broadcasting a mayday?

* crashes into the nearest large body of water?

* attempts to fly itself back to base (we have the technology)?

I mean, it has to do something and flying straight and level until it runs out of fuel is unlikely to be the optimal value of "something"

Why would it be controversial to say "Look, guys, we should decide what the plane does after the pilot ejects. Maybe the best policy is just flying same course and speed until fuel exhaustion, but we should choose this policy, not default into it without consideration."

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#15
post #7

It seems like the sensible thing to do would be to fry / erase any IFF and encryption related stuff, but otherwise continue as before. E.g, if it's already been programmed to fly straight and level, continue to do that. If it's deactivated, stay deactivated. Just seems like a whole 'nother set of characteristics to test otherwise, as well as adding extra unpredictability. The aircraft is probably damaged / on fire, s…

If the autopilot is engaged, the pilot won't be ejecting, because the aircraft will be in some kind of controlled flight. Autopilots will be disengaging and lighting up a big red light in the cockpit well before the aircraft gets to the point where the pilot would consider ejecting. Remember that ejecting is an absolute last resort, since the pilot is quite likely to be injured and runs a significant risk of being killed in the process of ejecting.

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#16
post #4

I think the most proper thing for the jet should be to destroy itself. In a war enviornment I would not like my enemy to gain intel about my military jets.

I think its high-speed collision with the ground or ocean generally takes care of destroying it. Especially with no pilot attempting to keep it level and slow it down and minimize damage.

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#17
post #13
post #4

I think the most proper thing for the jet should be to destroy itself. In a war enviornment I would not like my enemy to gain intel about my military jets.

Would you go near a plane that's an electronic signal away from blowing itself up? Even if mechanical, warplanes get combat damage, and having a system like that could make a difference between survivable and sure death.

Maybe bring some strong jamming equipment to prevent the electronic signal from being received?

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#18
post #4

I think the most proper thing for the jet should be to destroy itself. In a war enviornment I would not like my enemy to gain intel about my military jets.

Not my wheelhouse, but doesn't that involve packing the aircraft with explosives, and wouldn't that involve risk of blowing up if someone else shoots you? Or is there some better way to self-destruct?

Assuming there is an autopilot present, nose diving at max afterburner straight down is probably going to yield a similar result

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#19

Earlier quoted context omitted.

If this was possible it would just be part of regular flight control laws and would be used to avoid becoming uncontrollable in the first place.

Huh? If I'm the human pilot, I can pull the ejection lever for multiple reasons, including my just being an idiot. The plane, after I eject, should do something reasonable. Maybe it * starts broadcasting a mayday? * crashes into the nearest large body of water? * attempts to fly itself back to base (we have the technology)? I mean, it has to do something and flying straight and level until it runs out of fuel is unli…

Ejecting for for no reason would end the pilot's flying career. Ejecting for any reason will result in an investigation, at minimum. Pilots are expected to fly the airplane until the last extremity.

So while yes it's possible, it's unlikely, and the return on investment of making the plane able to do something like "return to base" in that circumstance would be a large negative number.

Re: If a pilot ejects, what is the autopilot programmed to do? (2018)

#20

Earlier quoted context omitted.

If this was possible it would just be part of regular flight control laws and would be used to avoid becoming uncontrollable in the first place.

Huh? If I'm the human pilot, I can pull the ejection lever for multiple reasons, including my just being an idiot. The plane, after I eject, should do something reasonable. Maybe it * starts broadcasting a mayday? * crashes into the nearest large body of water? * attempts to fly itself back to base (we have the technology)? I mean, it has to do something and flying straight and level until it runs out of fuel is unli…

remember that part of optimization is the amount of resources spent developing a solution for a problem that just doesn't come up that often. in the microcosm of a single ejection there's probably a better way to handle it than to just let the plane continue on its course. in the macrocosm, there's probably better problems to deal with than the one that results from the relatively rare situation in the military and unheard of in the civilian sphere. it's also worth noting that ejector seats are explosive-assisted and any plane that's been ejected from is rendered structurally unreliable, and usually is so close to crashing that nothing can be done to save it even if saving it is viable. So most of what you do "in response" to an ejection isn't actually in response, it's about planning ahead. outside of a wartime situation where factors beyond your control tell you where you'll be flying, don't be in a place where it would be dangerous to bail if you think you might have to bail.
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