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Space

SpaceX's New Combustion Technologies 132

An anonymous reader shares this story that takes a look at some of the advances SpaceX is working on. "Getting a small group of human beings to Mars and back is no easy task, we learned at the recent GPU Technology Conference in San Jose hosted graphics chip and accelerator maker Nvidia. One of the problems with such a mission is that you need a very large and efficient rocket engine to get the amount of material into orbit for the mission, explained Adam Lichtl, who is director of research at SpaceX and who with a team of a few dozen programmers is try to crack the particularly difficult task of better simulating the combustion inside of a rocket engine. You need a large engine to shorten the trip to Mars, too....Not only do you need a lot of stuff to get to Mars and sustain a colony there, but you also need a way to generate fuel on Mars to come back to Earth. All of these factors affect the design of the rocket engine....As if these were not problems enough, there is another really big issue. The computational fluid dynamics, or CFD, software that is used to simulate the movement of fluids and gases and their ignition inside of all kinds of engines is particularly bad at assisting in rocket engine design. 'Methane is a fairly simple hydrocarbon that is perfectly good as a fuel,' Lichtl said. 'The challenge here is to design an engine that works efficiently with such a compound. But rocket engine CFD is hard. Really hard.'"

Comment Re:Sturgeon's law (Score 2) 269

Apple created the f-ing platform, both hardware and software as well as the distribution system. It is WILDLY successful and popular. If you don't like how they do it, go somewhere else.

Seriously? If I disagree with something, if I consider it harmful to society, I will say why I disagree with it and why I think it is harmful, which is exactly what the article and the OP are doing. I think it can be assumed that people with concerns like this will, as you say, go somewhere else. There's a subtle implication in your post, however, that people with such concerns should shut up about them.

Comment Re:"Free" with restrictions is not Free! (Score 2) 198

Why would getting a bootleg copy help with the licence agreement? The free version produces non-watermarked files so no-one can prove that any given video was produced with a free version or a bootleg version. If you're going to commit theft or copyright violation or whatever your legal system calls it, it doesn't really matter which route you take.

Comment Re:duh? (Score 1) 144

There was an old friend of Mohammed Emwazi ("Jyhadi John") saying that he was a really nice guy - sweet, gentle, intelligent, and everyone was horrified that anyone could say that of such a monster. Er, I'm sorry, but if that's what the guy actually thought about Emwazi at the time, then that's what he thought. You can't change that.

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