Posts by imanidiot

Re: Green

If I understand correctly the copper is actually the direct lining of the combustion chamber and throat, so what is happening is probably a bit of engine rich combustion.

What can be done to fix it can involve many things. Among them: Changing fuel/oxidizer mixture ratios, changing the flow balance in the wall to improve cooling in the hotspots, altering wall thickness (either thinner or thicker, depending on what is happening), changing the injector pattern or slightly altering the flow in certain spots.

There is no TEA/TEB being used in the full size Raptor, so it's definitely not the starter system causing the tinge. On top of that the flame starts out yellow and then turns green. It'd be the other way around if it was ignition fluid.

I also doubt it's the camera as different angles show the same discoloration, and I'd find it strange if several cameras with different lenses, at different angles all showed exactly the same sensor saturation issue.

Re: Tried Libre about 3 weeks ago....

I'm of the opinion that if you're using that many row in an excel sheet you shouldn't be using excel but something more adapt at handling massive data sets and complex math operations on those sets. Something like MatLab ($$$, great documentation and service) or SciLab (Free, open source, but terrible documentation) or something along those lines. Much faster, and allows all kinds of funky stuff that is sometimes hard to pull off in excel.

Re: Easter

It does actually say that, they'll be cajoling the ISPs into blocking the sites (Ofcourse that doesn't work, you know that, I know that, every 13 year old boy with common sense or the ability to google knows that, but apparently that particular fact has eluded the lawmakers).

Re: Dickheads

The solutions exist. It's mostly politics and logistics that get in the way.

Re: Behind a locked door...

Nah, just inside the BOFH manual, with the heavy steel covers. Wired to the heavy duty inverter downstairs. Remember to use your gloves.

Re: It's For the Children

1984 and several real world political regimes of the past and present. Some of which seem to have taken George Orwell's book as an instruction manual.

Re: Design deficiencies

That's a very shitty thing to have happen. Bet your friend had a crap day when he returned.

It's also why you ALWAYS either leave something clearly unfinished or finish it completely. Or at the very least tape the bog lid shut with a very big notice on top that the pipes are not connected.

Re: And this is what you get

Backup, as in, another computer that can take over when the first one fails. Preferably on a different power supply, bonus for geographically separate too. Not just a copy of your data (though having that is ofcourse also a good idea).

Re: "How can we find out? There's science to be done!"

Yes. Sure. For anybody that is still alive. We'll go with that.

Re: at present we don't know the rover's status

I'm sure it's got a terrible pain down it's left side transistors, so why bother even telling us. We wouldn't listen.

Re: First space tailback?

Maybe the crew dragon is supposed to dock to the port the Cargo dragon would be docked to? They don't have a massive amount of free docking ports and some are more suitable for a first time docking than others

Re: Gene therepy not needed for HIV-free kids.

With proper treatment the levels of virus in the blood can be reduced to such low levels that it would be safe to do it the old-fashioned way (giggity) without risk of infecting the mother.

Re: Not sure...

It never fails.

Re: "Prepare to die"

You know very well I meant descent... I can't help it you lot came up with such a convoluted language.

There isn't much there to mess with.

Re: Similar but different experience

With these sorts of issues, ALWAYS allow your boss a way to share in the credit. If your boss had been smart (or you explained how to appear smart to him) he'd have gone to his superiors binder in hand, and told them: "I had my underling work out some cost savings ideas, here's what he came up with". That way he gets to share in the credit instead of feeling stupid for not coming up with it himself.

ALWAYS give your boss (undeserved) credit. Just be sure to keep some evidence in hand of how much he ACTUALLY did in case he ever tries to screw you over with it.

Re: One ring to rule them all?

For Astronomy it's the Overwhelmingly Large Telescope obviously.

As for particle physicists, TeVer? (As in Tera electron Volt Fever?) Or Luminosity Fever?

Re: I doubt they'll be that cheap

$150 bucks for an impounded scooter at auction, probably sight unseen or only for a short period, with no warranty or guarantee it will even work (and probably one that has been abused a lot before it got impounded) doesn't really sound like a great deal to me.

Re: UK method is nicer

It also means the bosses have about a month of staff being able to finish or transfer their work in an orderly fashion, whereas the US system of instant redundancies often leaves many things in limbo and creates utter chaos for those left behind to clean up the mess.

Re: WAIT! Hang on, back up a second ...

(AFAIK, I don't own an EV) If it's still connected to the charger and the electronics is actually well designed, probably nothing and no.

Re: Better One Innit

I had all of the equations need and often some example sums in my TI-83 graphing calculator when finishing high school. We couldn't be forbidden from using that as it was an allowed aid by official rules :) Barely used it though, as it turned out I usually just did my homework and actually learned stuff. The programming cable paid for itself and some snacks though. Not all students bothered.

Re: "Just look at how the Challenger disaster happened"

The cold O-rings might have been the direct cause of the shuttle exploding, it wasn't the cause of the accident. The roots of what allowed the accident to happen and the reason the decision to launch was made lie deep within the culture and organisation of NASA at the time. Read the entire accident rapport (and especially Feynmans Appendix F of such) and read between the lines. Yes, many people were aware of the dangers and many were aware of the possible ways in which their "bit" of the shuttle could fail. Nobody really had a good overview of how all these complex systems worked together and how things could cascade. Likewise, foam shedding was never really linked to thermal protection system damage, and thermal protection system damage had never properly been investigated.

NASA tried multiple times to get different shuttle designs worked out but got stonewalled because they "HAD a shuttle". And the STS itself formed a VERY poor basis for further development as it had been painted into a very difficult corner by the demands placed on it by the military (mainly: once around orbits requiring large cross-range capability and thus large wings, high cargo capacity thus requiring a very large oversize cargo-bay, the decision to use "reusable" engines that turned out to be so complex they weren't actually cheaper than just dumping them in the ocean but made the vehicle much heavier and much more complex)