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Facebook's Solar-Powered Drone Under Investigation After 'Accident' (theguardian.com)

Facebook has hit a hitch in its plans to use a solar-powered unmanned drone to provide internet access to developing nations, after it was revealed the American National Transportation Safety Board (NTSB) has opened an investigation into an accident on the drone's first test flight in June. From a report on The Guardian:At the time, Facebook described the flight as "successful": the drone, called Aquila, stayed aloft for 96 minutes, three times the planned duration. "We have a lot of work ahead of us," Jay Parikh, Facebook's head of engineering and infrastructure, wrote when Facebook revealed the test flight, in late July. "In our next tests, we will fly Aquila faster, higher and longer, eventually taking it above 60,000 feet." In a second, more technical, blogpost published that same day, Facebook's Martin Luis Gomez and Andrew Cox acknowledged the failure in passing. "Our first flight lasted three times longer than the minimum mission length, so we were able to gather data on how the structure and autopilot responded under a range of real-world conditions to help verify these predictions," they wrote.Reporter Casey Newton mentioned on The Verge that at the time, Facebook had led them believe that everything was alright, and there were no hiccups.

45 comments

  1. missing quote by sacrilicious · · Score: 4, Informative

    In a second, more technical, blogpost published that same day, Facebook's Martin Luis Gomez and Andrew Cox acknowledged the failure in passing. "Our first flight lasted three times longer than the minimum mission length, so we were able to gather data on how the structure and autopilot responded under a range of real-world conditions to help verify these predictions," they wrote.

    I read that three times trying to figure out whether the "in passing" mention of failure was so subtle that I was missing it. Nope, the editors simply left out the actually relevant quote:

    “We are still analysing the results of the extended test, including a structural failure we experienced just before landing. We hope to share more details on this and other structural tests in the future,” Cox and Gomez added.

    --
    - First they ignore you, then they laugh at you, then ???, then profit.
    1. Re:missing quote by The-Ixian · · Score: 1

      Wow, carbon copy experience here.

      Thanks for the clarification.

      --
      My eyes reflect the stars and a smile lights up my face.
    2. Re:missing quote by Anonymous Coward · · Score: 0

      I figured it was just a sign of Slashdot being paid by FANG and Musk to cover everything they do with a positive spin, even when it kills people.

    3. Re:missing quote by asylumx · · Score: 1

      Yup, same here. Honestly, it's not clear to me what the news is in this article.

    4. Re:missing quote by Anonymous Coward · · Score: 0

      Same as the other readers' experiences below, just reading TFS: I thought the hiccup was in my reading comprehension.

    5. Re:missing quote by BarbaraHudson · · Score: 1
      "an accident just before landing" - sounds like it either hit a power line or some other obstacle - or a bird took it out. If they can take down big airlines, what chance does a drone have?

      Or maybe because they kept it up 3x as long as it was designed, something let go that wouldn't have on a shorter flight. We just don't know, and the article doesn't say.

      Was the flight a success? Sure - it exceeded it's planned mission goals. Not bad for a drone with a 130' wingspan. And it also found a possible design or operations flaw - that's what test flights are for.

      --
      "Transparent" is a shit show that trades on every stereotype going. A man in drag is NOT a transsexual.
    6. Re:missing quote by TWX · · Score: 2

      What does Hagrid's dog have to do with this?

      --
      Do not look into laser with remaining eye.
    7. Re:missing quote by HornWumpus · · Score: 1

      Could just be an old fashioned tip stall. Not enough information.

      Flying wings have poor yaw control. At landing it's near stall speed. Little side wind, drone yaws, inside wingtip stalls, roll, smash. Long wingspans makes it worse.

      Pure speculation.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    8. Re:missing quote by JaredOfEuropa · · Score: 1

      Or maybe because they kept it up 3x as long as it was designed, something let go that wouldn't have on a shorter flight.

      Come on, this isn't a rocket under tremendous stresses or a Mars rover in a harsh environment, it's a bloody drone, albeit a high altitude one. Experimental model airplanes cobbled together by hobbyists over the weekend from balsa wood and shrink foil last a hell of a lot longer than 96 minutes without maintenance (even though they don't stay aloft that long in a single flight). If these guys cannot design a prototype that flies for that long, then I hope the regulators will take a very long and hard look before rating the production model.

      A design / mission goal of "fly it for 30 minutes without structural failure in flight" is something I would call a serious lack of ambition and proof of little faith in their own abilities. And if you have serious doubts about the aircraft being able to exceed that crappy benchmark, then flying it beyond that point (or flyign it at all) is rather irresponsible. However my guess is that the goal was 30 minutes of continuous autonomous operation before a human operator would have to intervene, or before power / battery issues would force a landing. The structural failure would / should have been wholly unexpected.

      --
      If construction was anything like programming, an incorrectly fitted lock would bring down the entire building...
    9. Re:missing quote by LenE · · Score: 3, Insightful
      OK, Internet super-engineer. You clearly do not know anything about aircraft or spacecraft structures.

      Materials used for small drones have a very difficult time scaling up to very large lightweight structures. Care to expound on the loads and stresses experienced by a 144 foot wingspan wing, that weighs only 900 lbs? This drone was built to be light and barely strong enough. That was its design point. Have you shown the world that you can do better and can credibly criticize their design?

      Extremely high aspect ratio wings, like this one, just don't want to quit flying. It is a real challenge to bring it down onto the ground. The pilots possibly exceeded design Vne trying to get it down. This exponentially increases drag forces on the airframe. Ground-effect makes landing even more difficult, and with a 144 foot wingspan, ground-effect starts at ~72 feet above ground.

      Add to this the non-homogeneous nature of gusting winds in proximity to the ground, and it is not inconceivable that design limits were exceeded by a fluke of nature. There is not enough public information of what weather conditions existed during landing, but sudden adverse conditions during landing are not unprecedented. Did Lockheed's engineers under-design the structure on the L-1011?

      Disclaimer - I work for an aerospace prototyping firm (not related to Facebook), and have worked on things that cover the conceivable gamut of Reynolds numbers that can be "flown". Although I have not worked on Facebook's drone, I have an intimate knowledge of the modern materials used in this air vehicle. My opinions expressed here are my own.

    10. Re:missing quote by JaredOfEuropa · · Score: 1

      So it's normal to design prototype aircraft that are expected to stay up for 30 minutes before failing but not 90? And if they are designed that way, is it normal to fly them until they break anyway? Because that was my point, as GP suggested that the mechanical failure might be due to flying the craft a bit longer than planned. That just seems silly and unlikely.

      --
      If construction was anything like programming, an incorrectly fitted lock would bring down the entire building...
  2. tons of other questions need to be answered. by nimbius · · Score: 2, Interesting

    this device exists solely for internet.org, zuck's imperialist project to bring internet to india through facebook. Among questions still unanswered:

    1. why are you continuing to insist on this if India itself has flatly refused this "branded internet" thats contingent upon your social media site
    2. How will you fly drones in foreign airspace without the consent of a host country?
    3. How do you justify brining internet to countries like Malawi, Zamibia, and Angola when a grain shipment or food programme would do far more to improve the lives of these people than another American drone?
    4. Egypt and South Africa already have high-speed internet available to the general public. did you forget this? or are you just trying to erode public investment in open and neutral networks?

    --
    Good people go to bed earlier.
    1. Re:tons of other questions need to be answered. by Anonymous Coward · · Score: 0

      Egypt and South Africa have what you would characterize as "open and neutral" networks? Not that Facerberg.net would be "less" analyzed, but still?

    2. Re:tons of other questions need to be answered. by Anonymous Coward · · Score: 1

      2. How will you fly drones in foreign airspace without the consent of a host country?

      3. How do you justify brining internet to countries like Malawi, Zamibia, and Angola when a grain shipment or food programme would do far more to improve the lives of these people than another American drone?

      4. Egypt and South Africa already have high-speed internet available to the general public. did you forget this? or are you just trying to erode public investment in open and neutral networks?

      Wow... okay, I'll bite because your post is just idiotic enough to warrant a response.

      Where is it that you think testing a drone in American airspace equates to invading another country? Of course a private company will need to get permission from the relevant agency in India. And getting that permission will likely cost quite a bit of money.

      And why does anyone have to justify providing a service rather than another handout of food? If they can't even feed themselves without freeloading off of grain shipments from the West, then maybe they need the Internet to Google someplace else to live or a better way to live.

      Egypt is under a totalitarian dictatorship... they don't have the Internet, they have Sissi Net. And South Africa is a big place with a lot of areas that probably could use wireless Internet...

      Why is it that you are an idiot? Oh yes, because you are an idiot.

    3. Re:tons of other questions need to be answered. by Anonymous Coward · · Score: 1

      Food programs don't work in those countries because their government is fucked up. There is no way to help them without fixing their government first.

    4. Re:tons of other questions need to be answered. by JaredOfEuropa · · Score: 2

      Re. point 3: teach a man how to fish and all that. That's what the internet is for, and even crappy limited access through feature phones has already improved the lives of countless people in developing nations, far more than any one shipment of grain would have. Access to information on weather and prices, access to markets, mobile payments, all these have enabled people to improve productivity, operate in new markets, and start new businesses.

      Drones might be a good solution to deliver Internet to such locations: cheap and difficult to vandalize. I just wished it wasn't the Zuck doing this.

      --
      If construction was anything like programming, an incorrectly fitted lock would bring down the entire building...
    5. Re:tons of other questions need to be answered. by Anonymous Coward · · Score: 0

      You're an idiot. Food programs don't work because they crash the local agricultural economy and create unemployed people entirely dependent on foreign aid. This practice is so destructive the WTO calls it "dumping" when it involves non-food commodities/goods.

      USAID is nothing more than a front for the CIA. When we want to inspire a regime change: we start by dumping free food on the people thereby depressing their economy and creating idle masses of discontent people. This leaves them in a suggestible condition for political agitation.

      If they're left to stew in poverty long enough: eventually a populist dictator will organically appear. OTOH, there's no reason to wait for this to occur naturally when you can effectively dust off the campaign speeches from the last foreign-aid inspired coup and feed it into Google Translate.

      If you want to know how the people involved in these practices sleep at night the answer is: "like a baby" and "under silk linens".

      How is that possible? Read more at the following link:
      https://tech.slashdot.org/comments.pl?sid=9907823&cid=53339715

    6. Re:tons of other questions need to be answered. by thegarbz · · Score: 1

      1. Because bowing to the will of a government that is not necessarily always acting in the interests of the people has never gone poorly?
      2. I'm sure they haven't considered this at all.
      3. Food programs do absolutely fuck all. Information, knowledge, and the ability to communicate on the other hand change lives.
      4. Hahhahahaha yeah so does North Korea.

  3. The best thing about "developing countries" is... by xxxJonBoyxxx · · Score: 1

    From Facebook's perspective, the best thing about testing "developing countries" is probably that dropping a drone on someone's head from 60,000 feet will mean, at worst, they're out a three goats and a pair of chickens. (See also: drug makers and name-a-country.)

  4. Fake news from Facebook itself??!?! by Anonymous Coward · · Score: 0

    Who knew!

    1. Re:Fake news from Facebook itself??!?! by bobbied · · Score: 1

      Haven't been on Facebook lately I see...

      --
      "File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
  5. Re:LOL at "developing nations" by Jzanu · · Score: 1
  6. Re:LOL at "developing nations" by Anonymous Coward · · Score: 0

    ...

    Or maybe it's because of race.

    More likely due to climate.

    If you're a slacker in the Caribbean, Africa, or some tropical Pacific Island, you live.

    If you're a slacker in ancient Europe, China, or Japan, come winter you freeze to death.

  7. Sturctural Failure by Anonymous Coward · · Score: 0

    Are you fucking shitting me? No aircraft designed since 1990 should ever have a structural failure unless the pilot deliberately took it over structural mach. The FAA was grossly negligent to throw away a century's worth of aviation safety experience and just let any fucking idiot put anything in the sky and call it a drone.

    1. Re:Sturctural Failure by tsqr · · Score: 3, Insightful

      Are you fucking shitting me? No aircraft designed since 1990 should ever have a structural failure unless the pilot deliberately took it over structural mach. The FAA was grossly negligent to throw away a century's worth of aviation safety experience and just let any fucking idiot put anything in the sky and call it a drone.

      Actually, aircraft structural failures, while not common occurrences, aren't all that rare. They sometimes result from, and nearly always end with, an unplanned encounter with the ground. Sometimes they result from a control failure that causes the departure controlled flight. Sometimes they occur due to fatigue. And they happen a lot with uncertified, experimental, developmental aircraft.

    2. Re:Sturctural Failure by HornWumpus · · Score: 0

      Don't quit your coding job.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    3. Re:Sturctural Failure by Anonymous Coward · · Score: 0

      idiot

    4. Re:Sturctural Failure by HornWumpus · · Score: 0

      Assuming you're the same AC. You can't change your post now. One Idiot is obvious; for all to see.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    5. Re:Sturctural Failure by ceoyoyo · · Score: 1

      "Structural failure just before landing" sounds a lot like a euphemism for crashing into the ground, or possibly some obstacle. Flying wings are hard to design to be flyable, and even then they're barely so. They also tend to be least flyable when landing.

    6. Re:Sturctural Failure by Anonymous Coward · · Score: 0

      Actually happens quite often for developmental aircraft. Usually in a wind tunnel, but smallish drones are often tested in real-air with telemetry in reserved airspace.

  8. BFD by 0xG · · Score: 1

    This is interesting how?

    --
    A pox on web designers who feel that window.innerWidth == screen.availWidth
    1. Re:BFD by bobbied · · Score: 2

      This is interesting how?

      Facebook crashed and burned and now the NTSB is investigating? How's that not interesting? An internet company catches the attention of the National TRANSPORTATION and SAFETY board seems like interesting news to me.

      --
      "File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
  9. Re:The best thing about "developing countries" is. by DarkOx · · Score: 1

    Well India probably isn't the place than. While the availability of justice to the average Indian might still leave a lot to be desired, it is a nation with a strong legal frame work (when used) and international pull to go after a company like facebook.

    Where FB is concerned deep pockets will get attention anytime there is blood on the water. They would be much better off conducting dangerous experiments in one of the many failed states, where they could pretty much count on being able to fire up the corporate jet and leave if things got dicey.

    --
    Repeal the 17th Amendment TODAY! Also Please Read http://www.gnu.org/philosophy/right-to-read.html
  10. Re:The best thing about "developing countries" is. by bobbied · · Score: 2

    Oh no... Once the villagers figure out WHO was responsible and how much $$ they have, you can bet the army of ambulance chasing local lawyers will be out in force making sure Facebook pays though the legal system.... Unless they have bribed the proper local authorities to skirt the legal system.

    Either way, they will pay...

    --
    "File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
  11. Re:LOL at "developing nations" by HornWumpus · · Score: 2

    Don't forget Malaria.

    'Society' is lucky to actually 'invest'* 1%. The difference in disease rates is a part of why societies/cultures with latitudes above the winter 'frost line' had resources to play with. They still squandered them on cathedrals more often than not.

    * Things like school buildings, city walls, field clearing and literal swamp draining. As opposed to things like education and farming, which are ongoing expenses.

    --
    John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
  12. "A horrible Facebook Solar drone accident" by tlambert · · Score: 1

    "A horrible Facebook Solar drone accident"

    "In shocking news today, Facebooks solar powered drone sucked up all available sunlight for a period of about 96 minutes..."

  13. it rained? by Anonymous Coward · · Score: 0

    ...

  14. Failure: Cannot Land ? by Anonymous Coward · · Score: 0

    I assumed *complete* reporting to indicate the failure was inability to land which caused them to exceed planned mission time significantly.
    I was imagining them loosing control and the bird simply kept flying on its own.

      cannot trust *any* reporting

  15. Re:The best thing about "developing countries" is. by ShaunC · · Score: 1

    Except they aren't testing (solely) in developing countries; this test and whatever anomaly ensued took place in Arizona. Not exactly the population center of the US, granted, but the tests are being done here at home.

    Facebook isn't alone in this regard, either, as Google has its own fleet of experimental drones. N749G flew over my house in the Memphis suburbs last Monday night enroute from KSIK to KOLV. The FAA says it's an "Ashfloyd Hummingbird," whose manufacturer has essentially zero public presence, but the model has been tied to Google's Project Wing. I kinda wish they'd keep their testing a little more remote.

    --
    Thanks to the War on Drugs, it's easier to buy meth than it is to buy cold medicine!
  16. FB Ponzi Scheme In Flames by Anonymous Coward · · Score: 0

    Zuck's FB ponzi scheme is both going up and crashing down in flames all around him.

  17. Editors, please... by blibbo · · Score: 1

    As already pointed out (+5 by sacrilicious), the TFS doesn't make sense. Why not update the summary with the missing line of the quote and include the disclaimer "EDIT: summary updated with full relevant quote".

    Mistakes are human, but fixing them is an act of kindness to the readers that don't hit the site in the first wave.

  18. Final Approach Failure by Anonymous Coward · · Score: 0

    Smells like a bad wind gust during final approach broke her back. These things are built so light that they are pretty fragile, and that can't be helped because weight is king here. NASA's Helios broke up at altitude due to gusts, and Google's drone broke up during climb to altitude, from what sounds like uneven thermal updraft winds. Facebook wants to launch theirs by balloon to avoid the launch/climb risks, but landing will be a mess regardless since they can't afford the weight of a recovery parachute. They don't even have proper landing gear, just some crushable foam skid struts.