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User: Yoda222

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  1. Re:This should be a major embarrassment on LightSail Wakes Up After Silent Spell and Tries To Spread Solar Sails · · Score: 2

    I agree with you for point 1 and 2.

    But for the point 3, it looks like they actually designed the power supply to keep the batteries charged. They just have reach a level where the safe power mode has been activated, disabling all non essential function from the spacecraft. (it's a design choice to consider TM/TC as critical or not, I would say that it should stay on, but it can be discussed) Note that reaching a charge level that low could be linked to the fact that they have lost for several days the contact due to 1 and 2, which has delayed the SA deployment. (I haven't look in detail the design of the satellite, but usually a satellite get less power when the solar array are not deployed)

    And for the point 4, it's a "design" choice. They have looked for a cheap launch to test a first version of their satellite, and found that one.

  2. Re:Just what humanity needed.. on Crowdfunded, Solar-powered Spacecraft Goes Silent · · Score: 1

    It's a low orbit cubesat, this debris will not stay low in orbit (a few month if they don't deploy the sailing part, if I remember correctly)

  3. Re:Seriously? on Crowdfunded, Solar-powered Spacecraft Goes Silent · · Score: 1

    That being said, it is shoddy programming to blindly write to a log on a resource-constrained embedded platform (or any platform, really. Just especially so on something like this), so somebody definitely goofed.

    Maybe they did not blindly write log on a resource-constrained embedded platform. Depending on how much memory they had, and how short the mission duration was, they could have computed that 32MB/(2d) * length_of_mission was sufficiently smaller than available_space

    But as a test engineer in the space industry (having working on big and expensive and too much paperwork satellites, not on the new space version of cheaper, less doc and simpler tech, which really looks interesting, but I don't know to what extend they test) I'm really surprise that they did never saw this bug before. They never run a rehearsal for more than two days with a sufficiently representative model ? Maybe this bug appears only once every [n] times, with n sufficiently big. Anyway, it's strange, I hope they will get an opportunity to patch it after a reboot, I'm interested in the results they could got from solar sailing.

  4. Re:and yet, the GOP blocks private space. on Russian Rocket Crashes In Siberia · · Score: 1

    It cannot be due to the Western embargo. Here is a quote from Putin: “The response of the Russian Federation to Western sanctions is legal and valid. It will help, and not harm our domestic economy,

    The russian space industry being part of the russian domestic economy, the embargo cannot be the cause of these failures

    .

  5. Re:Deniers on Top Advisor To Australian Gov't Says Climate Change is a UN Conspiracy · · Score: 2

    What I am trying to say is that "an inaccurate scientific prediction is wrong by definition, i.e. it cannot be used to prove anything." is false. An inaccurate prediction is not wrong, it is inaccurate. And yes you can use inaccurate results or prediction in science, to further develop.

  6. Re:Deniers on Top Advisor To Australian Gov't Says Climate Change is a UN Conspiracy · · Score: 1, Interesting

    We should then ask Englert and Higgs to give back their Nobel price? If I remember correctly, their initial paper did not even proposed a mass for the boson. The firsts experiments later only concluded that its mass, if it exists, was "not below 18 MeV/c. This kind of statement is so inaccurate [18MeV/c to infinity, quite a large uncertainty] that it's not science, by your logic?

  7. UN conspiracy? on Top Advisor To Australian Gov't Says Climate Change is a UN Conspiracy · · Score: 1

    According to http://www.un.org/en/members/ , Australia is part of the UN. I think it would then be more accurate to describe this conspiracy as an Australian Government conspiracy than an UN conspiracy.

  8. Re: Transphobic assholes on Statues of Assange, Snowden and Manning Go Up In Berlin · · Score: 1

    Do you do a DNA test on every person just to decide if you refer to them as "he" or "she"? That does not look easy to do.

  9. Re:Atmosphere study is in NASA's fucking 1958 char on NASA Gets Its Marching Orders: Look Up! Look Out! · · Score: 1

    One of the best way to monitor weather at a large scale (and this data is useful for climate science) is to do it using satellites. And satellite are usually in... space.

  10. Re:Very myopic study on New Study Suggests Flying Is Greener Than Driving · · Score: 1

    "“When you consider all of the man-made radiative forcing and all the changes we’re making that can affect climate, contrails are one of the smaller effects, compared to carbon dioxide and other emissions,” Spangenberg said. “Globally, you would have to increase the contrail effect by roughly 100 times to get the same effect as all of the anthropogenic carbon dioxide in the atmosphere.”"

  11. Re:Electric planes? on New Study Suggests Flying Is Greener Than Driving · · Score: 1

    requires extremely favorable conditions for takeoff.

    If you can flight forever, who cares ? You only need to takeoff once.

  12. Re:Masstransit is more energy efficient than perso on New Study Suggests Flying Is Greener Than Driving · · Score: 1

    The energy consumption of a takeoff depend on the mass of the plane at that time (I think), so for a given plane with a given number of passenger, it's not exactly independent of the distance. (more fuel needed for longer distance, bigger take off mass)

  13. Re:With REALLY Huge Fans... on New Study Suggests Flying Is Greener Than Driving · · Score: 1

    You speak about aerospace where you should probably speak about aeronautics. In the aerospace sector, people rely a lot on non carbon energy, except for the launch part. Of course a launch is a big energy consumption in a short period of time, but on the other hand the S/C will usually be used for 10+ years, running on solar energy. And more and more S/C use "electric" propulsion, where you have still a "fuel" of course, but most of the delta-V comes from electricity.

    There are some people who want to use renewable also for launches. Or at least it's a side effect of trying to simplify/reduce the launch cost. For example zero2infinity is planning to use balloon for launching rocket from high altitude, avoiding the dense atmosphere (even better, they use it) and the drag, and also starting from higher slightly reduce the delta-V.

  14. Re:These days... on Reddit CEO Ellen Pao Bans Salary Negotiations To Equalize Pay For Men, Women · · Score: 5, Insightful

    There is no good reason to pay a good negotiator more than a bad, except if you want to hire someone for a position where you need negotiation skills.

  15. Re:Free roaming sounds nice... on EU Free Data Roaming, Net Neutrality Plans In Jeopardy · · Score: 1

    Andorra and Vatican are not fully part of European Union.

  16. Re:Ok, there's only two questions to ask on EU Free Data Roaming, Net Neutrality Plans In Jeopardy · · Score: 1

    It's a group of national government which have decided to overrule the EP. Which ones ? I don't know. But just a possibility. If roaming becomes free, some operators will lose money. And some European operators are partially owned by countries: Orange (France), Deutsche Telekom (Germany), Belgacom/Proximus (Belgium), ... So they may have a reason.

  17. Re:the problem with nuclear power on French Nuclear Industry In Turmoil As Manufacturer Buckles · · Score: 1

    Helsinki has less than 6 hours of daylight in the winter with a maximum elevation of 6 degrees (on worst day), so it's not easy for solar arrays. And it's in the southern part of Finland so it's worse for the rest of the country. (to be honest the southern part of Finland is also where the vast majority of Finns are living) Nordic countries are not the best place for solar power. But other (renewable or not) sources can be considered, of course.

  18. Re:um, OK on Free-As-In-Beer Electricity In Greece? · · Score: 1

    Who's paying the air I breathe? Who's paying for the rain water that I collect?

  19. Re:Where to? on Europe and China Will Team Up For a Robotic Space Mission · · Score: 2

    That's the goal of the call for proposal. Something like "Dear scientist, we have a budget of 300kg and 50 millions euros (out of which x% must be kept for the platform). What do you want to do?"

  20. Re:Domestic war on Paris Terror Spurs Plan For Military Zones Around Nuclear Plants · · Score: 1

    Napoleon would have never allowed an enemy to set up 791 camps inside the country to train in tactics, ideology, logistics, and safe zones for enemies of the Republic

    Nor did Hollande, Sarkozy, Chirac or any french President (or prime minister). There is no such camps.

  21. Re:Domestic war on Paris Terror Spurs Plan For Military Zones Around Nuclear Plants · · Score: 2

    It's difficult to get rid of something which don't exist. But be reassured, the number of remaining "no-go" zone is now zero. Vous pouvez éteindre Fox News et reprendre une activité normale.

  22. Re:Domestic war on Paris Terror Spurs Plan For Military Zones Around Nuclear Plants · · Score: 1

    If you have any useful information to identify the people flying the drones over the reactors, I think some people may be interested.

  23. Re:Karma is a bitch on Paris Terror Spurs Plan For Military Zones Around Nuclear Plants · · Score: 1

    If you put it in the center of the country, people can also come without presenting any papers from all directions.

  24. Re:Really? On Slashdot? on Gunmen Kill 12, Wound 7 At French Magazine HQ · · Score: 1
    Can you give us two of such enclaves (two is the minimum, as you use plural). They must respect the conditions that you gives:
    • 1) be/becoming a Sharia-run enclave
    • 2) Absolutely no moderate* muslim said anything or did anything about it

    * From what I understand when you use "moderate" in front of muslim, I would probably call them just "muslim" or "normal muslim", but I have kept your word.

  25. Re:They got away!? on Gunmen Kill 12, Wound 7 At French Magazine HQ · · Score: 1

    Just avoid rush hours.