Slashdot Mirror


User: cozytom

cozytom's activity in the archive.

Stories
0
Comments
62
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 62

  1. Atlas is older than both on Russia's Proton Rocket, Which Predates Apollo, Will Finally Stop Flying (arstechnica.com) · · Score: 1

    Remember Atlas? An Atlas rocket launched John Glenn into orbit as part of the US Mercury program, and was an ICBM in 1958. They are launching an Atlas rocket in August 2018.

    (I know, Atlas in name only. Not the same technology).

  2. Re:Wonder if the koisks were the security breach. on Card Breach Announced at Chili's Restaurant Chain (bleepingcomputer.com) · · Score: 1

    I was talking to the Ziosk people about 4 years ago, and yes they are Android based tablets. The management of the company was pushing these tablets to reduce costs, since "wait staff won't have to take your order" and "you won't have to wait around for your bill".

    I went to Outback recently, and yes they had the Ziosk tablets also. I just pushed the screen towards the wall of the booth, and had a wonderful time chatting with the waitperson, never having to touch the device the rest of my visit.

    I think it is a solution looking for a problem.

  3. Re: Wrong Focus on Uber Shows Its Flying Car Prototype (cnbc.com) · · Score: 1

    Any parachute system requires a minimum height. If your magic vehicle is at 75 feet, and everything quits, the occupants are going to get hurt.

    The parachute will potentially get tangled in urban environments (poles, spires, etc), bouncing the craft into buildings and such risking additional injuries.

    Parachutes and windy days are not a good thing. The craft may land softly enough to survive, but the dragging and tumbling may cause further injury. Imagine a lull, the occupants start to climb out, and a gust grabs the parachute, dragging the craft across the survivors.

    Yes, the long blade helicopters will auto-rotate. Most quad/hex/octocopters (multirotor) craft propellers will not have the mass needed to auto-rotate, even with variable pitch.

  4. Re: Wrong Focus on Uber Shows Its Flying Car Prototype (cnbc.com) · · Score: 1

    Helicopters are able to auto-rotate in the case of engines quitting because the rotors have lots of mass that can hold energy until needed close to the ground.

    These wimpy drone propellers are not as efficient, and don't have enough mass to store the energy to use at any height.

    The wings will help in glide, but in an urban area, there still may not be a place to glide through the buildings to a safe place.

    Electric motors are reliable, but all the wiring and engine controls contain multiple single points of failure.

  5. EHang rose to prominence a couple years ago at CES on China's Bungled Drone Display Breaks World Record (bbc.com) · · Score: 1

    Remember their big splashy people carrying Octo-copter?

    https://www.forbes.com/sites/g...

    Do you still want to ride in one of these?

  6. Re:We still have the record for most people / manu on China's Bungled Drone Display Breaks World Record (bbc.com) · · Score: 2

    Actually there were "hobbiest" RC model aircraft in the 1930's.

    The 1950's had small tube based RC units.

    http://www.stormthecastle.com/...

  7. Heat Buildings With Coal on White House Reportedly Exploring Wartime Rule To Help Coal, Nuclear (arstechnica.com) · · Score: 1

    If coal is such a good idea, why don't people use coal to heat Condo's in New York.

    Money where your mouth is.

  8. I gotta believe this is hurting Oracle on Oracle Wins Revival of Billion-Dollar Case Against Google (bloomberg.com) · · Score: 2

    I know people who are actively *NOT* buying Oracle because of stupid lawsuits.

    But maybe Larry doesn't care anymore, he has enough money to play, and can't spend it all before he dies.

    Weird.

  9. Re:Reality check on Uber CEO Sees Commercialization of Flying Taxis in 5-10 Years (reuters.com) · · Score: 1

    While you are negative on the FAA, there is more to be negative about.

    Experimental licenses are available for the developers of the system to go out and fly these things with people in them. Why aren't people flying in them now?

    Well, what is plan B? When something bad goes wrong (batteries die, mid-air collisions, bird strikes, etc) what happens to the occupants? Flights about about 10 feet will cause people to get hurt. Parachutes only work at higher altitudes (hundreds of feet).

    Bright sunny days aren't everyday. Winds, clouds, fog, rain, hail, etc happen in real life, how will this plastic pod survive all the weather in the world?

    Batteries take longer to charge than the flight they were used for. Charging can take 2-3 times longer than the use time. Unless some huge improvement in battery technology happens, these will be very expensive to fly. Batteries wear over time, and after hard use over a years time, the capacity could be as low as 50% of new, meaning longer charging, and shorter flights.

    Triple redundancy has failed before (UA flight 232), but there are other options you say. What are they?

    5-10 years is a pipe dream.

  10. Why would anyone believe any of this. on Boeing 757 Testing Shows Airplanes Vulnerable To Hacking, DHS Says (aviationtoday.com) · · Score: 1

    The B757 never had WiFi or any other common networking on it. The closest thing might be ACARs, or one of the databus that aircraft use.

    The 737 classics that Southwest has, had WiFi added, but nothing connected in the cockpit. Even the 737-NGs had WiFi added, but again, nothing to the cockpit.

    The newer 737-MAX's are Boeings responsibility. So far Southwest doesn't have enough of them to threaten the company should the need to be retro-fitted.

    A fix to one line of code, would apply to several thousand aircraft. It won't be $1mil per line per aircraft. A software fix that cost $100million would be applicable to about 5000 unique aircraft.

    There is a high noise to signal ratio in the original article, but it sure generates a lot of speculation and worry.

  11. Normal for the auto industry on Tesla Badly Misses Model 3 Production Goals (wsj.com) · · Score: 1

    I worked in an auto plant that was supposed to build 1000 cars per day.

    When I started, they were running 1 shift, hoping to get to 500 cars per day, but were building about 300-350. They added the second shift, and with training and all, barely got about 500 cars per day. After about 9 months, the management said we will try our best for one day, really pushing things. That one day the plant built 700 cars. After that, the plant was building 600-650 consistently, with a few days around 700. After that they added an extra hour to each shift (9 hours) and were able to build about 700-750 consistently every day. After about 2 years the plant was building about 750-800 every day.

    This was in the early 90's and we could sell every car produced. The company had to put quotas on dealers and they would sell cars above retail price, making customers unhappy.

    Troubles included Just In Time parts delivery being late, and line workers wasting materials (they dropped a plastic clip, and rather than picking it up, use another one, but the JIT predictor didn't account for that much waste, and we were short parts). There were silly troubles too, like it couldn't read the body number out of the paint shop sometimes, so the line wasn't sure what car just came out.

  12. On a clear day, with a perfect airplane (AF447) on Pilotless Planes Could Save Airlines $35 Billion Per Year, But Passengers Aren't Willing To Fly In Them Yet (fortune.com) · · Score: 1

    The only time a fully autonomous airplane will work, is on a clear day with a perfect airplane.

    Go fly in unforecast icing, thunderstorms, and in the dark, with a couple MEL deferments, and watch the AI get all confused.

    Air France 447 was put down as pilot error, but the reality is the autopilot gave up with too many confusing inputs, then the pilots had to take over, and one (of about 5 pilots) made a bad choice.

    Software isn't the only thing to rely on, there are a ton of sensors that have to be dealt with as well. I've been around aircraft long enough, constant high speed and vibration take their toll on all equipment. Many times the autopilots fail on aircraft, it keeps the mechanics employed, and pilots earning their pay.

  13. Re:This might be defensive (Just like 1-Click) on Amazon Granted a Patent That Prevents In-Store Shoppers From Online Price Checking (theverge.com) · · Score: 3, Insightful

    Again why does anyone buy anything from Amazon. They are an evil evil evil company. They don't make anything better, only more expensive (long term).

    Most likely this patent was asked for by Amazon so they *STOP* retailers from doing this. If a retailer does this, then Amazon can ask the store for all their profits since the beginning of time. Amazon hope customers will do this so they will find it cheaper through the amazon store.

    Please people, stop giving Amazon any money, don't buy from these creeps.

  14. GPS fails, all kinds of issues with this on Feds Unveil Rule Requiring Cars To 'Talk' To Each Other (thehill.com) · · Score: 1

    GPS fails or is not accurate enough for airplanes to rely on 100% of the time. The local Air Navigation Service Providers (ANSP) like the FAA have space based augmentation like WAAS in the US to make things better, but still not 100%. I could see cars going out of control when the GPS signals are no good. 5 cars are occupying 00'00.000" on this place in the freeway, they all jam on the brakes.

    Who gets to program the kalman filters that predict the closing rates and such, they never fail. GPS only can tell you where you were when the signal came down, not where you are when it is done calculating. The Kalman filter tried to adjust to where you are when the calculations are done.

    Too much Theory, and not enough Practical.

  15. h.265 can be less lossy on Netflix Finds x265 20% More Efficient Than VP9 (streamingmedia.com) · · Score: 1

    As long as folks don't just re-encode h.264 content. Record things in with an x265 encoder, at the beginning, and have more actual bits in the B and P frames.

  16. Re:Sounds like a problem with flight planning on Delta Air Lines Grounded Around the World After Computer Outage (cnn.com) · · Score: 1

    It could be everything too.

    flight planning and flight following is one system, typically, but then there is crew and maintenance. So it becomes a huge data sync problem. Start moving planes, and you need to know where the crew is, or where they will spend the night, so they can be where they need to be the next day. Same with maintenance. If a plane has a C or D check tonight, the plane needs to be where the mechanics are, or the plane may not be able to fly tomorrow (except as a ferry flight).

    Start moving one cog, and the all the gears need to mesh, or the whole thing will get really expensive.

  17. Why Drone Delivery to Your House Won't Work on Amazon Partners With UK Government To Test Drone Deliveries (usatoday.com) · · Score: 1

    Bushes, trees, Halloween decorations, spiderwebs, rain, sleet, snow, dogs, cats, raccoons.

    Delivery drivers are extremely flexible, they can walk around bushes and other obstacles near your door. They pet or feed dogs that appear near the package. What happens to the drone attacked by the dog (or that slices into the family pet who happens to attack the drone).

    If you want a special delivery spot on your roof, then should Amazon be sue'd be everyone who falls off the roof trying to retrieve a package.

    If things are mapped out well, and the drone can navigate through the bushes and trees near the door, for Halloween someone puts up a skeleton, or ghosty thing that the drone can get all wrapped up in.

    Some snowy day, you are out of Popsicles, but don't want to drive because you can't see the end of the driveway. Make your order and expect the popsicles to show up in 30minutes, well the drone gets lost too, and crashes in the neighbors house. Who collects the bounty? The crashed drone might be wanted by the delivery company, but more likely finders keepers takes over. The neighbor is mad about the chip in the side of his house, so he keeps the popsicles too.

    All aircraft have limitations in wind. Too windy and they don't fly. Same with small multicopters. Probably 20-30mph will be a limit. No deliveries on windy days.

    I could see distribution center to distribution center the drones could work. Will the payload capacity make it financially viable? Probably not for toothpaste, but maybe high end watches and other smaller high value items

  18. Who Ever Was To Replace Clarkson was Screwed on Top Gear Host Chris Evans Steps Down After Poor Ratings (theverge.com) · · Score: 1

    It didn't matter who they picked to replace Clarkson, they were gonna suck. Maybe there were some good choices out there to host the show, all the smart ones said "No" because they would be judged as; Not Clarkson.

    No one ever heard of Chris, at least in the US, but now they have. He may have more opportunities now. He may have less who knows. It was a gamble for him, certainly, and I don't blame him for trying.

    Matt LeBlanc sort of pulls off a Hammond imitation. I don't think he could be the main host like Mr Clarkson was. If Matt was offered the main host position, he was smart to not take it.

  19. So many things are dumb about this on Passenger-Carrying Drone Gets Symbolic Approval For Test Flights In Nevada (theverge.com) · · Score: 2

    1. Little wizzy blades are not efficient. Helicopters are more efficient, and fixed wing aircraft are even more efficient.
    2. 23 minute flight time, but what is the recharge time? Certainly longer than getting another victim^H^H^H^H^H^Hpassenger in.
    3. What is plan B when something goes wrong. I've flown quads, and sometimes the processor does something unplanned.
    4. wizzy blades near the ground, how long before someone gets hurt by these blades?
    5. Prototype aircraft usually gain 20-100% weight by the time all the required stuff goes in, performance goes down.

    Many times you see quad copter fliers get the idea the scaling them up is a good idea. The reality is, that the economics don't work, they aren't efficient.

  20. Re:Android? on Nokia Announces Return To Smartphone, Tablet Markets (nokia.com) · · Score: 1

    It won't matter.

    They will only put the "Nokia" name on someone's hardware, as if customers will be confused and think they are buying a rock-solid nearly indestructible device.

    To build an app eco-system, and all the infrastructure needed to make meego or something else non-iOS or non-Android would be a fools game.

  21. Re:Reminiscent of Commodore on Nokia Announces Return To Smartphone, Tablet Markets (nokia.com) · · Score: 1
  22. It is hard to change peoples opinion on Study: Drones Present Minimal Threat To Aircraft (cio.com) · · Score: 0

    There are people who believe the government shouldn't regulate anything.

    There are those people who fly aircraft, and don't want to be taken down by more crap in the air.

    The study says a drone operating continuously for 187 million years. That is just absurd, they wear out way before then. A quicker way to get to the injury is to launch 187 million drones, then you should get an accident every year! Even at the 187 million year statistic, you never know if the year will this year or next, or the 187 millionth.

    You read stories about once a month about people getting injured by quad copters at ski hills, marathons, and out in the park. They can be hard to fly, and are subject to all kinds of disturbances (IE weather). They crash all the time in racing.

    Quad copters are not the most efficient devices out there, and their controls aren't 100% reliable. Sometimes they will do something unexpected and undesirable.

  23. Why does this product exist? on Surveillance Culture Brought To the Masses, Courtesy of Verizon (consumerist.com) · · Score: 1

    OBD products are everywhere, I am surprised they don't make OBD hubs like USB hubs.

    After seeing the ads for HUM, I just shake my head. Where does Verizon (a carrier) benefit from this product. They get data, I suppose they can sell the data, but other than that, no.

    For the consumer, there are so many really useful OBD apps out there, and they don't require anyone to send data to Verizon or any other carrier.

    I am guessing they HUM product is advertised more than the OBD other products out there.

  24. One Parasite gone, Another to go on SCO vs. IBM Battle Over Linux May Finally Be Over (networkworld.com) · · Score: 1

    Now we gotta get Oracle to stop saying APIs are patentable.

  25. Bill wasn't as inflammatory as the summary on How Bill Nye Insulted NASCAR Fans About the Sport Being the "Anti-NASA" (examiner.com) · · Score: 2

    Wow!

    There are already racing series that encourage fuel efficiency. Formula E is all electric, and is growing in popularity. It has HUGE sponsors.

    http://www.fiaformulae.com/

    A mix of fuel efficient and aviation could be some flavor of aircraft racing. Aircraft can actually be fuel efficient. Quickie aircraft will get about 80MPG while going over 150MHP.

    http://www.aviastar.org/air/us...

    Two seaters can get 45 MPG (or go 180mph):

    http://www.planeandpilotmag.co...

    This guy tweaked his airplane to get 100mpg

    http://blog.aopa.org/blog/?p=7...

    There are *LOTS* of aircraft that will get these fuel efficiencies.

    If you count seat miles per gallon, most modern jet liners will get about 100mpg

    https://en.wikipedia.org/wiki/...