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Comment Re:I'm hoping for the latter. GOOD LUCK!! No, Real (Score 1) 299

> The fact that they didn't validate the drives operation on earth and immediately proceed to shooting it into space (where there is less opportunity to actually test it) should be a big red flag.

Um, according to TFA (I know, I know, nobody reads that), they DID validate the operation on Earth, as best they could. Now they're proceeding to shoot it into space.

Comment Re:Don't need computers at all; point of failure (Score 1) 335

A guy I used to work with -- and this goes back some years now -- had hacked his dishwasher to work off an old PC when its (the dishwasher's) circuit board died. It didn't have all the fancy bells and whistles the original control system had, but then he never used those anyway.

These days probably an Arduino or Raspberry Pi would suffice, but wouldn't look as cool (for certain nerd values of cool) as having an old desktop PC on the kitchen counter with a cable running to the appliance. ;)

Comment Re:Interesting how little storage is needed (Score 1) 160

Actually, it's not impossible at all. The UK grid needs about 3 times the amount of wind and much more solar and 2 terawatts of underground hydrogen storage.

There's enough salt caverns around the UK that can give it that storage, and the hydrogen can be manufactured via electrolysis when the wind and solar is producing too much. It's not very efficient, but renewables are cheap.

It CAN be done.

Comment Re:Not supported by subsidy (Score 1) 160

FYI as of 2021 the UK had 1.3 GW(h) of battery storage on the grid:

https://www.solarpowerportal.c...

I'm not sure what the total storage is now, it's going to be over 1.5 GW(h) with this installation, and probably a lot more. Note that large batteries aren't needed, it's the total battery storage that's important.

The UK grid operator was particularly keen on getting batteries on it, because the HVDC interconnectors to the continent have been unreliable, and they tend to suddenly break with no warning. That has meant that the grid needs to have a couple of gigawatt of spinning reserve instead, particularly spinning overnight, but with enough batteries they can shut most of that down into hot standby.

The last outage the grid had, due to a lightning strike, they didn't quite have enough battery, and that meant they had to do load shedding and that caused chaos. They should have enough battery now to keep it up long enough if there's a repeat to get backup power running and avoid any load shedding.

The other thing these batteries can do is help smooth out the production curve. If we had enough batteries to smooth out the evening power demand, the CCGT gas turbines would be much more efficient. When they first start up they use about twice as much fuel per kWh until the second cycle kicks in. If they start up less, costs should go down. But we'd need a lot more batteries to make that work.

Comment Re:OK, the obvious question. (Score 3, Interesting) 56

> Sticking to specifications which are wrong is the biggest nightmare error of them all

Emphasis added, because that is key.

I once spent the better part of a year "debugging the specifications" for a major product development effort (not helped by the fact that we had three different customers for the product, all telcos). It wasn't so much that the specs were wrong, per se, as that vague wording of some requirement in one section could contradict the vague wording of a requirement in some other section.

By the time it was all sorted out, the code almost wrote itself. (Well, not really, but it did mean we could actually deliver the product.)

Comment A man of profound influence. (Score 1) 56

I never met the man, but his work (which I was fortunate enough to have read early, his book came out while I was in college) had a significant influence on my career.

More than just his eponymous law, his advocacy of "software surgical teams" and later paper "No Silver Bullet" did a lot for helping avoid some of the pitfalls that too many projects still fall into.

One of the best managers I ever worked with (indirectly, he was a client) had a case of "Mythical Man-Month" books, he would hand them out to anyone involved on his projects.

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