marsokod

8 ms·

31.
by marsokod 4y ago
Part of the discussion on the drag sails was that while they are decreasing the time in orbit, they are increasing the collision area and therefore the general risk of collision remains the same. Tethers are somewhat better but hard to work
32.
by marsokod 4y ago
There is some confusion with different issues, you are right. There are several problems that create a perfect storm: 1. As you said, the water issue is just temporary. This is a non-issue for this winter. 2. The next generation NPP, the EP
33.
by marsokod 4y ago
> Its reactors are getting old enough that their capacity factors have declined - in 2020 down to 62%. This isnt much ahead of the capacity factor of the best wind turbines (57%). The situation is a bit more nuanced than that. Yes the ca
34.
by marsokod 4y ago
It can follow the fluctuations during the day. That's what is done in France. It is not efficient at all since a NPP cost mostly the same regardless of its power generation, and is technically a bit more complex, but perfectly doable.
35.
by marsokod 4y ago
The whole papers revolves around this claim: > Marine plants like diatoms produce omega 3 oil which acts like a cap on the surface of the water to slow down evaporation There are no numbers about this, no reference, nothing. And this cla
36.
by marsokod 4y ago
That's not really the intention behind the initial concept. If you are able to update a plane to make it more efficient while keeping the same behaviour and the same interfaces for the pilot, then it is great and there are no safety co
37.
by marsokod 4y ago
It depends on what you are talking about. If you are talking about a battery car, then it is better to use a number that makes sense for the end user, and number of charge cycle is not an easy one. If you recharge from 70% to 90% every day,
38.
by marsokod 4y ago
Not only that, but Volvo is procuring their batteries in China and the footprint for battery production is deeply impacted by the carbon intensity of the grid where it is produced. So using a Volvo is already close to a worst case for the b
39.
by marsokod 4y ago
It is exactly the same. You have many modules for Home Assistant (through HACS, none is an official module yet) that will use a similar setup. I use it mostly to track and keep a record of my Niro status.
40.
by marsokod 5y ago
The cost of nuclear energy is actually in the law since EDF has to sell some of its production at cost to other providers. The evaluation is done by the CRE.
41.
by marsokod 5y ago
It's not only a launcher issue (and given the timeline, switching launcher is unlikely feasible even if the rocket is available). The descent module is russian made (with ESA bits in it), so the rover is now stuck. This launch window i
42.
by marsokod 5y ago
You've got loads of hydroelectricity in Québec, that's fairly cheap. In Europe most of the electricity was (and still is) generated with fossil fuel so if you are going to heat a place, you might as well use the gas directly, that
43.
by marsokod 5y ago
For LEO missions, the source is now typically a GNSS receiver outputting a PPS line. Otherwise, you try to have a precise clock (TCXO, OCXO, and now CSAC are available) as a reference distributing the time to all the subsystems, and you cor
44.
by marsokod 5y ago
The EV6 and the Ioniq 5 are at the same level as the Model Y. They charge as fast, if not faster, are slightly cheaper (at least on the UK market) and have a better range.
45.
by marsokod 5y ago
I can think of the e-niro, but that's about it. Maybe the Peugeot e-208. But yes, these are exceptions.
46.
by marsokod 5y ago
There are many simulations like that when sadistic engineers (sorry, simulation engineers) will inject errors in the simulator and see how the operators react. Then the operators have to find a way out. This is also used to make sure that m
47.
by marsokod 5y ago
Amperage is set by the resistance of the human body. That's in the order of 2kOhm, so at 50V, you get a current of 25mA. That's in the zone where it becomes quite intense for you. At 12V, we are just talking about 6mA, where you c
48.
by marsokod 5y ago
Yes, and the x2 figure is the usual estimation when checking this at a company level.
49.
by marsokod 5y ago
Have a look at how many http queries it is sending. It's like they are sending a unique query for every word used in each page. This is horrendous.
50.
by marsokod 5y ago
That's a bit of an exaggeration for sure. But dust can be an issue in connectors, making the connection not as stable as expected or even break the connection on a pin if there is enough. There is also the risk of short circuit on non-
51.
by marsokod 5y ago
They do, but for small scale projects like satellites we tend to push con-coat until we have a good confidence the unit is working. Removing conformal coating to replace a failed component or change a resistor can be quite tricky, especiall
52.
by marsokod 5y ago
Here Facebook is not targeting anti-lockdown accounts here. It's just the shortcut used by the article's title but the targeting is different. They are targeting accounts that are coordinating themselves to spread misinformation a
53.
by marsokod 5y ago
Do we actually have costs for the boreholes? Looking at the IDDP (geothermal deep borehole at 5km), I see costs of $22M. So we are talking about around $20B for the 800 boreholes forecasted for all the waste ever generated in the US. That s
54.
by marsokod 5y ago
My theory is more that they will add the functionality to Starlink. Worst case, you just plug the RF part of the swarm cubesat on the outside of a Starlink. This way Starlink immediately supports low power devices, has a ground segment for
55.
by marsokod 5y ago
It was closer to $6B, still more than twice than SpaceX though.
56.
by marsokod 5y ago
Yes, but the problem with Li-Ion fire in a confined environment is that it generates a lot of toxic gas (doable but you need equipment for that), a lot of hydrogen which will react with everything near by, and the risk of explosion (in the
57.
by marsokod 5y ago
It is a fully automated vehicle. They have done a few flights and the capsule is actually landing with a parachute so they don't have to worry about the rocket landing being a failure.
58.
by marsokod 5y ago
Not anymore. Now it's almost everything is EAR, and ITAR is restricted to a smaller subset nowadays. EAR is still painful but much less than ITAR - if you just want to use an EAR product and you are in a NATO country, handling the rest
59.
ESA advances its plan for satellites around the Moon(moondaily.com)
94 points by marsokod 5y ago|55 comments
60.
by marsokod 5y ago
No need for that actually. They will deorbit within a year if left completely dead, and within a couple of month if they have a single button "start deorbiting" that uses the electric propulsion. But more importantly, their propul

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