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Comment Re:Tesla enables Edison to win the endgame? (Score 4, Insightful) 597 597

Everything I have read here makes me angry. First, there were technical reasons why Tesla wanted AC, and economic reasons why Edison wanted DC.

Second, HVDC lines exist. This is for BOTH technical and economic reasons.

Third, you can run AC and DC on the same lines and filter one from the other. With modern SiC tech this isn't even a challenge.

Comment Re:Not sure I get it. (Score 1) 290 290

AFAIK the C-C jetliner brakes improve the economy of that; to specifically last much longer than a single use.

The X-43 flew for nearly ten minutes at hypersonic speed. The leading edges were treated with PVD, presumably to make them ablative as you say.

Comment TERCOM (Score 1) 11 11

The first implementations of the SLAM-type algorithms came from a missile with the same name; the Supersonic Low Altitude Missile. This was a multi-attack nuclear weapon which would cruise along the ground at Mach 3 and pop off nukes on Russian cities as it went, spewing fission products from its exhaust. A truly monstrous weapon.

Its design started in 1955. - No, that's not a typo.
http://en.wikipedia.org/wiki/S...

Comment Re:How about we beta test on Venus? (Score 1) 367 367

The CO2 in Venus' atmosphere could be used as a source of carbon for building a ribbon around the planet. A satellite-based atmospheric heater could perhaps propel the gas to sufficient altitude. The oxygen could be combined with hydrogen so that vapor clouds formed on Venus, since those reflect a lot of sunlight back into the atmosphere. There might be enough hydrogen in the solar wind for this to be done reasonably quickly.

It could be sensible to build an orbital ring/space station around Venus while we wait for the planet to cool...

Quite glad to see that Mars doesn't get all the Terraforming attention! =)

"Mach was the greatest intellectual fraud in the last ten years." "What about X?" "I said `intellectual'." ;login, 9/1990

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