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When Will We Have Unmanned Commercial Airliners?
- rbanffy 15y agoHopefully only when the last time a pilot had to intervene on a plane flying itself is only remembered in history books. Automation today is really good, but only until something goes wrong. Until automation becomes absolutely perfect, I will argue it's even starting to become dangerous - as pilots are thrown into emergencies without quite knowing how the plane got into them and based on what flawed assumption.
- weavejester 15y agoAutomation doesn't have to be perfect; it just has to have better judgement than a human pilot.
- bulte-rs 15y agoFortunately for some of us (e.g. me), judging is not something computers are particularly good at right now.
- lucasjung 15y agoAutomation is incapable of "judgement;" automation consistently and reliably responds to inputs according to pre-defined instructions. That's why automation works really well in some situations but not others. The more complex the task, the harder it is make a complete instruction set that will result in a satisfactory outcome for every possible situation. Even human pilots behave somewhat like automatons in some situations: in most situations they follow procedures, which could be described as "responding to inputs according to pre-defined instructions." However, they often encounter situations not covered by the procedures, in which case they must instead exercise their judgement. The problem with judgement is that it is neither consistent nor reliable. Some humans have better judgement than others. Eventually we will have automation sophisticated enough to handle even to full complexity of aviation, at which point automation will yield safe results more consistently and reliably than human judgement.
- weavejester 15y ago> Automation is incapable of "judgement;" automation consistently and reliably responds to inputs according to pre-defined instructions. Where are you getting this definition of "automation" from? As far as I'm concerned, an automatic system is simply one that require little or no direct human control.
- _delirium 15y agoI suppose it gets into philosophical debates about AI, but I don't see any reason in principle that we can't describe at least some kinds of computerized systems as exercising something described as "judgment". We already have one existence proof, the human brain, of a system that can exercise something we call "judgment", and I don't see a strong reason to believe that it's due to anything magical about the human brain in particular (like a soul or something along those lines), rather than just being a complex reasoning system that's able to balance many contextual factors.
- lucasjung 15y agoAutomated systems as they currently exist have fixed responses to fixed inputs. If an automatic system encounters a set of inputs it wasn't programmed for, it has no capacity to determine a best course of action for those inputs. Depending on how it was programmed, it will either keep doing what it was doing previously, or switch to a pre-programmed "contingency plan" that hopefully will result in a tolerable outcome (but which might result in catastrophe), or possibly execute a random set of instructions (which can happen to poorly-designed state machines, for example). A human being, on the other hand, has the capacity, when faced with unexpected or unfamiliar conditions, to exercise something we call "judgement" in an attempt to develop an appropriate response. I'm not saying that it's impossible for an automated system to have this capacity, I'm saying that no current automated systems have it, and that we're nowhere near to developing such a system any time soon.
- _delirium 15y agoThat's definitely the case with deployed civilian aircraft systems, but I'd be surprised if there wasn't some unmanned system somewhere doing more complex reasoning. There was a talk years ago at IJCAI from some people from NASA Ames on a prototype aircraft-control system they'd built that used a reasoning system to assist with performing emergency landings in situations with no preprogrammed contingency, by taking into account some telemetry information (e.g. aircraft damage), map information, an aerodynamic model, and risk models. I do believe they were planning to deploy it as a suggestion system though, which would suggest a course of action, and then leave it to the pilot to implement it or not. Then the judgment gets more murky; now the system is doing some of the judgment (evaluation of alternatives, etc.) that a human pilot would normally do, but leaving some of the judgment (accept the suggestion, modify it) still to the human. edit: Here's a more recent paper than the one I'm thinking of, but must be the same project: http://ti.arc.nasa.gov/m/profile/de2smith/publications/IAAI09-ELP.pdf http://ti.arc.nasa.gov/m/profile/de2smith/publications/IAAI0...
- rbanffy 15y agoYou would need a better-than-human-pilot AI for that. Until we get there - and are able to reliably demonstrate that, you'll want humans in the loop.
- adhipg 15y agoI feel that the biggest problem with automation and AI based systems is the ability to handle 'Black Swan' events - for the lack of a better term.
- WalterBright 15y agoThe reason for accidents is usually an unanticipated combination of events. Unanticipated means an autopilot will not have been programmed to handle it. There are many, many aviation disasters that were avoided because the pilot got creative.
- adrianN 15y agoAnd there are a couple of disasters where the pilots didn't listen to their mechanical friends.
- jarin 15y ago"And for nearly two decades, automatic landing systems have been able to drop and stop a jet on the fog-shrouded deck of an aircraft carrier that's barely twice as wide and three times as long as the jet's wingspan—and the ship is moving. Meanwhile, the pilot sits in the cockpit, hands folded." I know that aircraft carriers have these systems, but having been on two deployments on an aircraft carrier I have never heard of it being used. I think it's only for emergencies when the pilot is injured or incapacitated.
- lucasjung 15y agoThere are actually a few levels of automation available to hornet pilots, ranging from (in layman's terms) "a little help staying on-speed and on glideslope" to "fully automatic." Some pilots hardly ever use them, some pilots use them as much as they are allowed (in order to insure proficiency, there are limits in place to make sure the pilots don't become overly reliant on the automation). Most pilots are in-between, using them occasionally, typically when they feel like they're not at their best (e.g. at the end of a 6 hr+ combat sortie into Afghanistan). Even when on full-auto, I don't know any of them who sit "hands folded:" they're ready to take over immediately in case something goes wrong. I've heard stories that some of the test pilots eventually got confortable to take their hands completely off the controls back when this stuff was first being tested, but I doubt if even they made a habit of it.
- grecy 15y ago> I don't know any of them who sit "hands folded:" they're ready to take over immediately in case something goes wrong. Did you ever hear of something going wrong with the automation?
- lucasjung 15y agoOccasionally it will disengage, leaving the pilot in full control. IIRC, when in full-auto it will automatically wave off (add power and climb out to go around and try again) when it disengages unless the pilot actively takes over; so it wouldn't create an immediately unsafe situation, but it could result in an unneccessary missed opportunity to land.
- deleted 15y ago[deleted]
- lucasjung 15y agoI fly for a living, and I currently work in developmental flight test. One of the programs I am working on is a UAV. It's going to be a very, very long time before we see autonomous airliners. I'll talk about specific technical hurdles, but I think the biggest issue is psychological: it's one thing to entrust a bunch of freight to an autonomous vehicle, another thing entirely to entrust dozens of living, breathing human beings to such (the article discusses this, including the concept of "shared fate"). I am confident that autonomous airliners will only come into service when autonomous aircraft technology reaches a point where the computers are able to handle every aspect of flight safety better than humans. Right now they can already do some of those things better than humans, and those tasks have already largely been shed by human pilots and entrusted to their computers. I think there will be a gradual transition as the computers are able to take on more and more of the tasks. The article also mentions how this process is already causing basic aviation skills to atrophy in pilots who leave too much to the computers. I think this is a very real problem, and I think it was a major contributor to the Air France flight 447 crash. Prudent pilots do more manual flying than is strictly necessary because that's the only way to maintain proficiency. If this problem becomes severe enough, expect to see the FAA establish more granular proficiency requirements. The author talks a lot about how much the military is using UAVs, and seems to think that this is a good model for civilian applications. It isn't. The military has an entirely different set of risk considerations than civil aviation. Take the example of medivac UAVs: a medivac UAV will almost certainly have a higher mishap rate than a manned medivac helo, which would be completely unacceptable for civilian purposes. However, for the military that increased mishap risk is more than offset by the risks of putting an entire human crew into harm's way just to medivac a single wounded soldier. Military UAVs currently in use generally have much higher mishap rates than their manned counterparts, but the military tolerates this because aicrew don't die in UAV mishaps, and UAVs are generally less expensive to replace than manned vehicles. Part of the reason for this is that features designed to prevent or mitigate mishaps cost money, and it is often cheaper to leave many of them out and accept the higher mishap rate, especially when no human crew is involved. However, part of it is that autonomous systems still just aren't as good at flying safely. For the military, the benefits outweigh the costs, but I really can't see a for-profit corporation reachig the same conclusion. >Northrop Grumman has built some sense-and-avoid savvy into the unmanned helicopters and other UAVs it's developing for the U.S. Navy. I happen to be intimitely familiar with one such system, and somewhat familiar with another. This sentence is utter BS. I can only assume that the author was fed a line by an NGC PR-type and took it at face value. A more honest way to say it would be: Northrop Grumman is trying to incorporate limited sense-and-avoid capabilities into the unmanned helicopters and other UAVs it's developing for the U.S. Navy. Moreover, FAA has a requirement for "see and avoid," not "sense and avoid." The military is trying hard to sell them on the idea that it should be "sense and avoid," of which "see and avoid" would be just a subset, but so far the FAA has remained deeply skeptical. The FAA is right to be conservative about this change: none of the currently proposed systems would be as effective at collision avoidance as the Mark I Eyeball, and thus far the systems I am aware of (to which the quote from the article was referring) are still a very long way from working properly. This seems to me like the kind of technical problem that eventually can be overcome, but it's going to take a lot of work to make that happen. Because "see and avoid" is so critical to safety of flight, and because UAVs can't currently do it, the FAA does not allow UAVs to operate in its airspace, with some tightly restricted exceptions for military and law enforcement UAVs. I doubt very highly if they would make similar exceptions for civilian purposes, and even if they did, the restrictions involved are so limiting that there aren't many viable applications.
- tjmc 15y agoWhen someone can tell me with a straight face that the 440 passengers and 29 crew members of QF32[1] would still be alive without the heroes they had up front that day. [1] http://en.wikipedia.org/wiki/Qantas_Flight_32 http://en.wikipedia.org/wiki/Qantas_Flight_32
- pak 15y agoThat was a fascinating read, although I must play devil's advocate and ask what prevents a ground crew from taking over a commercial airliner remotely in case of distress? None of what this flight crew did necessitated their physical presence onboard, only their decision-making and operation of the existing aircraft controls.
- tjmc 15y agoGiven that the plane was on battery power when it landed, a ground crew may not have still had contact and control of the aircraft. In the case of the "Gimli Glider" mentioned below, there was a total power failure due to fuel exhaustion and IIRC the pilots had to crank down the nosewheel by hand.
- parfe 15y agohttp://en.wikipedia.org/wiki/Gimli_Glider http://en.wikipedia.org/wiki/Gimli_Glider also a favorite.
- VMG 15y agoWhat about passengers that were killed due to human error?
- vaksel 15y agoI don't think we'll ever see it. There are too many hurdles to overcome. The psychological and liability one for actual plane manufacturers. + it just doesn't make sense economically. Pilots get paid fairly little now, and as automation progresses, the salaries will go down to ~40K(so ~80K for the 2). At that point, it's really not that much money to give passengers the extra sense of security.
- onemoreact 15y agoIt's not just the pilots, cockpits for something like a 747 is not all that cheap to build and adds a fair amount of weight on every trip. If you really need manual supervision of takeoffs and landings you could have a set of pilots at major airports supervising these functions with vary low latency.
- mseebach 15y agoModern glass cockpits are just thin interfaces on avionics you need anyway. I would be surprised if a cockpit-less 777 was significantly lighter than one including it. As for the weight of the pilots themselves - judging by the cost of excess luggage, I'd say it's negligible for all but the smallest aircrafts.
- onemoreact 15y agoI would say just the weight of the pilots, their seats, the extra structural support and reinforced door, and the need to wire control surfaces to the front of an airplane vs it's mid section etc. Your probably down ~2-4 passengers.
- danielschonfeld 15y agoI am an airline pilot and a programmer who loves automation. While the psychological aspect I think is easy to get over with the public by producing ultra low fares the technological one is quite different. The author states that even in easy adaptations such as traffic watch we still do not see UAVs and what the author is missing is the cost! Those military UAVs cost almost as much as a private jet in what today using 1950s technology can be achieved for the cost of a used cluncker. Also, the same inheritable problems that we face fully automating cars, exist in fully automating airplanes. Each is an individual unit and very autonomous with no single 'track' to follow. In addition to this largely autonomous environment you have integration problems, where you would integrate the old with the new automated environment and still be able to offer the same capacity of airspace usage. As frustrating (and yes it is for pilots too - more than passengers realize) as air travel seems now days. The achievements of airspace utilization in places like New York, Chicago, Los Angeles, Phoenix, San Fran etc is almost mind boggling considering it's used with a mosaic of 1930s radar equipment which honestly can't pin point you to an exact location within a circle of 1 mile around yourself.
- edelweiss 15y agoWhat Commercial Aircraft do you fly, and for how long have you been a Commercial Airline Pilot?
- deleted 15y ago[deleted]
- crikli 15y agolucasjung has done such a fantastic job of debunking this idea that they's very little to add; however one aspect that hasn't been expanded upon is the glacially slow pace at which the FAA approves systems for use. Approved aviation systems are far from bleeding edge; at best the technology in use is five years old, and the 5-year old technology that's in use is only so because some company(ies) invested the considerable resources to jump through all of the hoops required by the FAA to get approval for commercial use. Furthermore, military aviation is an incredibly poor analogue to commercial (and general) aviation because it lacks the onerous regulatory oversight brought to bear by the FAA. Military aviation is the bleeding edge and the advancements made there trickle backwards to CA/GA at a very slow pace due to the incredible cost of getting certificated by the FAA as well as the fact that the FAA (correctly) places safety and reliability at the top of their priority list.