Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Comment Re:Ivy League Schools (Score 2, Funny) 106

The Ivy League was basically a formal gentleman's agreement (you know, back from the good old days where they banned women and blacks from campus and had strict quotas on Jews) that they would mutually agree to be terrible at sports in order to maintain high academic standards.

Everyone who attends an Ivy League school to play sports is someone who would have been a serious consideration for admission without their athletic ability.

Of course they're going to be terrible at sports. They don't have any black people on their team!

Comment Re:I hate personal definitions (Score 1) 174

Dude, you're the worst sort of person to argue with. You've demonstrated poor reading comprehension and a willingness to hand-wave away the distinction between similar words if you don't think they are relevant to you or serve your position. You seriously make me wonder why I even bother trying to express myself precisely

I never used the word explosion. I used the word detonation. I contrasted it with the deflagration that occurs in internal combustion engines like we see in cars.

A detonation occurs when the shock wave expanding out of the reaction zone compresses the unburnt fuel ahead of the wave, and the compressive heating raises the temperature in the unburnt fuel above it's autoignition temperature.

10 m/s is well below the threshold. Try 2000 m/s.

Detonation produces a more efficient combustion than deflagration, gives higher yields, and generates more kinetic force relative to the thermal energy released. It's a whole different kettle of fish.

Comment Re:LaserJet II and LaserJet 3 (Score 1) 702

Or maybe they didn't try to shave a dime, nickel, or penny off of the cost in all the wrong places.

I swear most of my stuff that brakes is overwhelmingly not due to a big expensive part, but cheap shit where the labor costs 100x+ more to replace it than the part itself.

Even in cars, when it's electrical, where the new board or component cost several hundred $$$, the old one only died because some cheap ass component died but hard/uneconomical to track down.

Comment Re:It's been a lot longer than 2007 (Score 1) 218

In addition, STUFF BREAKS. Your UAS that depends on ADS-B for sense-and-avoid isn't going to see that Bonanza with a transponder failure.

So, require every plane to have 2 of them then, with independent everything. Require them to have fallback to a non-GPS satellite positioning system as well.

And that's all irrelevant anyway, as there is never going to be a requirement (at least probably not in my lifetime) for manned aircraft to have an ADS-B transponder anywhere they don't already need a Mode C transponder. That will never fly, pun intended. The vast majority of private pilots will never need ADS-B out, as they don't fly where it matters. There are huge swaths of airspace you can fly in WITHOUT A RADIO, much less a transponder. This is a matter of philosophy: the airspace of the United States belongs to the people, and they should have free use of it. The FAA is only supposed to provide the minimum amount of regulation and oversight to keep everyone safe.

The problem is that this kind of mindset keeps general aviation (and aviation in general) stuck in the 20s. Why do aircraft spin on turn to final? Well, for starters, because there IS a turn to final - something completely unnecessary if you have the ability to do a precision approach to any runway with an RNAV with traffic awareness.

Of course, it is a sword that cuts both ways, because legally right now you can fly an unmanned drone anywhere in the US, commercial or not, monitored or not. Cite a law or regulation that says otherwise (hint, you can't, which is why a Federal court ruled against the FAA recently in the only case to go to a ruling that I'm aware of) - no, advisory circulars are not laws or regulations.

Sure, we could make it cheaper by cutting out certification requirements, but that goes back to my original statement: We'd have to accept lower safety levels.

Or we could just have the government bless a reference design and sell it for cost, with the manufacturer having no liability for failure (responsibility for quality would rest with the FAA), and other manufacturers would be able to freely manufacture the same design at any price they wish, with no liability as long as they conform to the reference.

The problem with aviation is that the regulations GREATLY lag technology, and the certification requirements drive everybody to openly avoid modernization. Then everything gets grandfathered in, so procedures have to assume that there is a piper cub with no electrical system nearby all the time.

I don't mean to pick on collision avoidance and ADS-B in particular. Problems like this exist all over the aviation industry, especially in general aviation. Cars have had FADEC and automatic transmissions for decades now, the typical training aircraft that costs $100/hr to operate lacks both (indeed even fairly expensive new piston aircraft still tend to lack them).

Sometimes I think the solution to the aviation problem isn't to think about how to allow drones to safely operate in a world of piloted aircraft, but rather to to think about how to allow passenger-carrying aircraft to safely operate in a world of drones.

Comment Re:My toilet (Score 4, Insightful) 702

Toilets really are one of the best tech inventions of all time. And I do mean tech in every sense of the word. Porcelain is the best material for it, and while the chinese had it for a long time, when the west (Kingdom of Saxony) got it/discovered it, it gaurded the secret closely. Thankfully it got out, are it would be relegated to fancy sculptures and plates.

This isn't to mention all the requirements like running water and sewer system... but a lot of tech resembles Maslow's hierarchy of needs, as in the oldest stuff is generally the most essential, and as time goes on, the newer stuff is icing on the cake.

Comment Re:tldr (Score 1) 235

Yup. If you're just going to throw up your hands and say that bug-free software is impossible, why not just intentionally write software that doesn't work at all?

My Linux kernel HAS to be broken. So, why not just edit the source and put an infinite loop at the entry point? The resulting black screen when I boot up must be just as useless as the OS I'm typing on right now, right?

Comment Re:McArdle is astute (Score 1) 29

What worries me about her is that she was in charge of Clinton's single-payer plan, and screwed it up royally. So far I don't like any of the candidates from either major party.

Either way I'll probably vote either Libertarian or Green. I cannot support a candidate who wants me in prison. The only way she'll get my vote is if the Republicans screw up in their Presidential nominations like they did with Illinois' Governor's race. They had one excellent candidate, two acceptable and a tea party billionaire who hates unions and middle class people. They chose the only candidate who could get me to vote for Quinn.

Morons. They'll probably nominate another tea party stinker who only cares about the 1%. If they do I'll have to vote for Clinton.

Comment I noticed something once again (Score 1) 20

Why do so many right wing radicals (and supporting the 2nd amendment is in no way radical) insist on using, as they would put it, grocers apostrophe's? (Yes that was deliberate). There seems to be a correlation between far left and far right radicals and a lack of education.

User Journal

Journal Journal: Mars, Ho! Chapter Sixteen 3

Pressure
When I woke up, all my muscles were on fire. We would have had to turn the ship around today, and in fact that's what was scheduled, except for the meteors and the drama that followed.
Destiny was sleeping peacefully. I got up, thankful that we weren't at Earth gravity but wishing we had turned around for deceleration then, because they have it plotted so that you start the journey close to the planet you're leavi

Slashdot Top Deals

"The one charm of marriage is that it makes a life of deception a neccessity." - Oscar Wilde

Working...