Search found 914 matches

by krenshala
Fri Feb 09, 2018 1:56 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 794104

Re: Mach Effect progress

My understanding is that Elon Musk wants to invest in refining existing known good hardware that meets his personal goals, such as taking rockets and making them reusable. If someone developed and built a working, usable thruster - as opposed to a research build thats only really good on a test stan...
by krenshala
Thu Feb 08, 2018 4:30 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

choff wrote:When life imitates art.

https://www.youtube.com/watch?v=DWMPe3wF9jQ
This was the first thing I thought of when I saw the shot of the Earth behind the roadster. Glad to see I wasn't alone in that.
by krenshala
Wed Feb 07, 2018 11:29 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

They did the burn about six hours after launch. It ended up not being a proper Trans-Mars-Injection burn, however. Its more like a Trans-Ceres-Injection burn, clear into the Belt, if not quite to Ceres orbit . I'd call that a success on showing off what its heavy lift rocket design can do, even if t...
by krenshala
Thu Feb 01, 2018 1:53 pm
Forum: General
Topic: Comets can’t explain weird ‘alien megastructure’ star after all
Replies: 29
Views: 37057

Re: Comets can’t explain weird ‘alien megastructure’ star after all

Going from memory, but I thought the issue was a-periodic dips in light, as opposed to increases?
by krenshala
Thu Jan 04, 2018 1:43 pm
Forum: News
Topic: BLP news
Replies: 657
Views: 213814

Re: BLP news

With solid state lithium batteries seemingly inevitable, even if you bought into EEStor, they're close to losing almost all of their advantages. If these advantages ever existed in the first place... Thats his point. Whether EEStor ever really worked is pretty much irrelevant if "normal" batteries ...
by krenshala
Fri Dec 29, 2017 6:14 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

It is so tempting to take a short notice vacation and "visit my parents" in Eustice FL, "coincidentally" in time to see FH launch. ;)
by krenshala
Fri Dec 22, 2017 7:41 pm
Forum: News
Topic: Unusual Looking Space Rock
Replies: 10
Views: 7674

Re: Unusual Looking Space Rock

It looks like a splatter of mildly viscous matter. Couldn't it just be a spurt of ejecta that cooled into that same original shape it was jettisoned as, and be one of a few/the one stray ejectus that got away? If it was hot enough to be considered plastic, it should have reached hydrostatic equilib...
by krenshala
Fri Dec 15, 2017 11:09 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

Even without amusing aerobatics, I think we'll hear from the judges when Space X (finally!) starts on their synchronized team flying/landing attempts.
by krenshala
Sat Nov 04, 2017 1:28 pm
Forum: General
Topic: Diamond Is A Semiconductors Best Friend
Replies: 3
Views: 10023

Re: Diamond Is A Semiconductors Best Friend

I see Johan's tongue is as sharp as ever. ;)
by krenshala
Fri Oct 27, 2017 12:31 pm
Forum: General
Topic: Diamond Is A Semiconductors Best Friend
Replies: 3
Views: 10023

Re: Diamond Is A Semiconductors Best Friend

The descriptions in the article remind me of some of the descriptions Johan Prinn (am I remembering his name correctly?) gave for the work he was doing.
by krenshala
Thu Oct 26, 2017 9:20 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

delta v = v_e * ln( wet mass / dry mass ) If we assume the lower (sea level) Isp of 330s for the raptors, and a 100 metric ton dry mass, then you would need 3020 metric tons of fuel to result in a delta v of 11126.31 m/s. If you change the Isp to the vacuum value (375s) and ignore the presence of a...
by krenshala
Fri Oct 20, 2017 12:12 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

Even if flight time is bumped up to 1 or 2 hours to mitigate G stresses on the passengers, that would still be significantly better than aircraft for flights traveling more than 1/3 of the way around the globe, and possibly for some shorter distances.
by krenshala
Wed Oct 18, 2017 1:03 pm
Forum: News
Topic: SpaceX News
Replies: 2286
Views: 611107

Re: SpaceX News

Elon just finished an AMA over at Reddit ... perhaps a little tipsy while doing so. Skimming through the top level questions and responses and found this gem from Musk: The advantage of getting somewhere in 30 mins by rocket instead of 15 hours by plane will be negatively affected if "but also, you...
by krenshala
Fri Oct 13, 2017 9:48 pm
Forum: General
Topic: 2014 only the hottest year on the cooked books...
Replies: 97
Views: 94315

Re: 2014 only the hottest year on the cooked books...

Yes, it is currently spring in the Southern Hemisphere as of ~20 September.