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Comment Re:Huh? (Score 1) 63

3D printed objects aren't the strongest due to the way the layers are laminated together. I imagine the last place you'd want a weak join is on a 150+ foot long blade swishing through the air.

You betcha.

Especially since a spinning blade gets more efficient as it gets faster. Higher speed = lower torque for a given horsepower density, so a higher tip speed ratio (TSR) wastes less energy "twisting" the air downwind.

Efficient wind turbines run at a TSR of 6 or higher - which means that in windy conditions the tips are running at an appreciable fraction of the speed of sound.

If one of those puppies breaks off it's NOT the kind of baseball bat or boomerang you want coming toward you, whether flying or summersaulting along the ground. (Imagine a caber toss with giants and redwood logs.) Not to mention what the resulting unbalanced spinning does to the other blades and the pylon.

Comment Re:More nation-wrecking idiocy (Score 1) 572

For those that say "but they will not see in the dark or with rain" there is a simple solution: adapt to the speed you can travel, so slow down. That is the whole purpose.

Similar to what I said earlier in the discussion, you could also fill the road with potholes to make people slow down. You are making the road less safe to scare people, while also completely disregarding their need to get somewhere in a timely manner.

Comment Re:More nation-wrecking idiocy (Score 1) 572

No, it's not. You could also fill the street with potholes. That would slow people down (and damage their cars) with no benefit. Not having the lines to guide people, keeping them in safe lanes, could cause them to slow down to a speed that wasn't needed before you did it.

Yes, accidents are more severe at high speed. But we still have high speed expressways, right? You're reminding me of that Bloom County cartoon from the 1980s, where Milo accused Opus of wanting 30,000 people to die on the highways because he didn't support a 15 MPH speed limit over 55.

Comment Re: Ok. (Score 2) 580

Well, just because you can make ads that fill up the entire page and can't be skipped, move around the screen, play videos and sound, or redirect the browser to another page, doesn't mean you should. That's abuse.

It's annoying how much space is dedicated to advertising in a print magazine, but at least it doesn't do those things. If it did, print would be dying even faster than it is.

Comment Re:Tax Returns??? (Score 1) 176

A lot of people simply don't understand how the system works. One of my in-laws convinced her husband to put in 0 withholding allowances (or maybe 1; I forget) for years, ending up with a huge refund. Mind you, they had several children, so it was a relatively immense check. I think she thought somehow this was a hack that got them free money. Meanwhile, he had to borrow money from his own kids sometimes, because his cash flow was so bad.

Comment You're right, it's bogus. Dang! (Score 1) 118

https://en.wikipedia.org/wiki/Smoke_detector mentions none of this.

You're right, it's bogus.

I was told that decades ago. But a little research (in the online patent databases) shows that there were ionization smoke detectors for decades before that (back in the tube era, even, when beta emitters were easily available to the common man). NASA says their only involvement with smoke detector design was (in collaboration with Honeywell) coming up with a variable-sensitivity design to stop annoying false alarms in Skylab.

Sorry to have repeated a myth. B-b

Comment Re: Meh (Score 2) 276

The PRV is actually a rather well designed engine, it just castrated to death by US emissions regulations (these were created by big3 lobbyists to kill high efficiency small foreign cars and choke them to death with NOx restrictions, which are no problem for super low compression, gas guzlng V8s, but very hard on high efficient, high compression foreign 4 cylinders).

OK, hold the bizarre anti-Euro conspiracies. While European countries were continuing to use leaded gas, the US switched to unleaded and implemented catalytic converters and EGR. It took some time for US automotive engineers to work this out (ultimately, computer control was the solution) so all cars sold in the US between about 1975 and 1990 were pretty well choked off to a degree. Engine computers were not sophisticated, so the only way to avoid knocks without cheap hi-test was to lower the compression. The same thing happened when you put controls on a foreign engine that hadn't been designed for it. GM had a 2.8L V6 that also got only 130 HP. They had a 5.0L V8 that got only 165 HP too. Premium unleaded cost 50% more than 87 octane and you couldn't put compression past about 8.5:1 without using it. You're looking at it through the rose-colored glasses of 21st century technology. Today we can run 9.5:1 on 87 octane without a significant performance drop-- and the computer retards the timing if needed, rather than damaging the engine. Incidentally, those mods you mention require rechipping that computer!

NOx is bad stuff, mmkay? It was definitely worth mitigating acid rain.

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