Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Comment trade-offs (Score 1) 289

I've heard that, in addition to smoke removal, fresh air (or water) lowers a room's temperature and can prevent flash-over. There must be an optimal solution among the inputs -- people get degrees in this stuff.

Comment Re:What are the military applications? (Score 1) 65

This is the best reply I've read here. I think that back when they built the current system (article says 1961) the military wanted to know where everything was so they could identify the military threats. (You also don't want to launch your counter-strike when that Russian rocket booster burns up over Alaska.) That's still the case, but the use for collision avoidance is becoming more important now. The data go into real-time calculations and also into long-term environmental models.

The data (sure...minus classified) are already available to the public, with the caveat that these are averaged/low-res data not suitable for collision avoidance.

Comment Re:The ocean frontier - not (Score 1) 138

I saw a presentation on NASA's current thoughts on shielding, but didn't take notes so I can't quote specifics. The shielding choices they listed were water, polyethylene, and liquid hydrogen. The LH2 was the most effective and thinnest shield. A water shield for an Earth-Mars trip was something like 1-3 meters thick and not thought to be practical for launch from Earth. Someone did suggest captured "comet cores" as the best source of a water shield.

Comment Re:Air drop that puppy (Score 3, Informative) 228

The HDU work to-date has focused on developing processes, procedures, and some technologies you'd need to live away from Earth. The first assumption is, "We have a habitat." They're still figuring out where to put lights and bunks before building expensive hardware for tests in near-Earth space. With current Administration/NASA plans, the next step is a Lagrange point and/or asteroid. Mars (and those siting and assembly issues) will have to wait...

Slashdot Top Deals

Genetics explains why you look like your father, and if you don't, why you should.

Working...