SpaceX News

Point out news stories, on the net or in mainstream media, related to polywell fusion.

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jnaujok
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Re: SpaceX News

Postby jnaujok » Tue Jan 09, 2018 11:03 pm

I just don't understand the NASA/ULA fascination with Pyros. Just finished reading the excellent "How Apollo Flew to the Moon" by W. David Woods, and could not believe that they used pyros to cut the LEM from the CM after it had done its job.

Consider that a mechanical docking system was acceptable to attach the LEM, hold it fast on the trip to the Moon, then unlatch and deploy the LEM with descent module down to the lunar surface. Then accepatable again to re-attach the LEM (ascent module only) to the CM when it got back, but after off-loading all the science/samples from the LEM, they used a ring of high explosive to detach it the last time, destroying the docking ring in the process.

The astronauts had to be fully suited when the cutting charge was activated because there was a definite non-zero chance that the cutting charge would breach the hatch on the command module, and they would have had to be fully suited for the whole trip back to Earth and re-entry.

Yet, they had a perfectly good and tested mechanical separator that had already worked at least once during the mission.

And, consider that every time the astronauts went from CM to LEM, they were one static discharge away from being cut in half by high-explosives.

My brother pointed out that it was technology developed in World War 2 when they needed to cut away fuel tanks and bombs when computers and hydraulics and pneumatics were totally unreliable, and servos weren't even invented.

Yet, here we are, 70 years later, and NASA is still just enamoured of these things, despite the fact they tend to throw shrapnel in all directions when they fire. In the era of space-junk mitigation, I don't know how they can justify this stuff.

KitemanSA
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Re: SpaceX News

Postby KitemanSA » Thu Jan 18, 2018 3:44 am

Hmmm. “Classified mission” that “failed”? Perhaps they just want folks to THINK it failed. ;)

Tom Ligon
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Re: SpaceX News

Postby Tom Ligon » Thu Jan 18, 2018 2:37 pm

I've been wondering about that. We don't know what the payload was ... possibly a test of a re-entry system? But I don't want to speculate too hard ... If I guess right, they may have to kill me.

ladajo
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Re: SpaceX News

Postby ladajo » Thu Jan 18, 2018 2:51 pm

Given there is no two line for track USA-280, it can be fairly safe to assume there is nothing being tracked at this point. Most likely, payload didn't make it based on public statements by SpaceX that Falcon 9 did it's job inferring something went wrong that was not Falcon 9 related.
For whatever reason, the vehicle appears to have bricked and lawn darted.
The development of atomic power, though it could confer unimaginable blessings on mankind, is something that is dreaded by the owners of coal mines and oil wells. (Hazlitt)
What I want to do is to look up C. . . . I call him the Forgotten Man. (Sumner)

Betruger
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Re: SpaceX News

Postby Betruger » Thu Jan 18, 2018 6:46 pm

Didn't the X-37 manage to skirt tracking without this much attention?
You can do anything you want with laws except make Americans obey them. | What I want to do is to look up S. . . . I call him the Schadenfreudean Man.


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