Search found 913 matches

by krenshala
Mon Nov 04, 2019 3:21 pm
Forum: News
Topic: That Salvatore Pais again... Fusion Reactor Patent
Replies: 11
Views: 2904

Re: That Salvatore Pais again... Fusion Reactor Patent

Fusion occurs at temperatures exceeding 15 million degrees Celsius, which can only be achieved by feeding fuel (unstable isotopes like uranium and deuterium) into a plasma field. The Soviet Union provided the initial blueprint for achieving nuclear fusion through plasma with the first Tokamak react...
by krenshala
Fri Aug 23, 2019 4:45 pm
Forum: General
Topic: The Prince gets it.
Replies: 14
Views: 3450

Re: The Prince gets it.

2 million meals per year equates to nearly 4 metric tons (3.7Mg) per day, assuming 0.7kg per meal. I base the 0.7kg on 0.85kg per "meal" with about 0.15kg of that being packaging, based on a NASA article I read yesterday.
by krenshala
Thu Jul 18, 2019 4:26 pm
Forum: News
Topic: New John Goodenough battery with high (too high?) energy density
Replies: 12
Views: 14277

Re: New John Goodenough battery with high (too high?) energy density

I found a new article on this battery on IEEE Spectrum's website just now: https://spectrum.ieee.org/energywise/en ... ing-better The article is from just a couple months ago.
by krenshala
Thu Jun 06, 2019 5:10 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

Okay, now that you mention it, I think you're both right that passive deorbit was just a side benefit of the altitude, but not their actual plan. Still, its nice to know that even if they didn't actively deorbit the satellites, they will (relatively) rapidly fall out of the sky once they run out of ...
by krenshala
Thu Jun 06, 2019 5:05 pm
Forum: General
Topic: Factor X have we finally found the fountain of Youth?
Replies: 369
Views: 124139

Re: Factor X have we finally found the fountain of Youth?

Here's to hoping this is not the official start of what causes the Eugenics Wars (Star Trek), or the battles against the Sauron Supermen (Niven's Known Space).
by krenshala
Tue Jun 04, 2019 3:42 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

At the end of their useful lives, the satellites will use their ion thrusters to crash back into the Earth’s atmosphere, burning up, and thus preventing them from becoming space debris. Just one nit to pick - the sats won't use their ion thrusters to deorbit. To deorbit, they will stop using their ...
by krenshala
Wed Apr 17, 2019 12:42 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

Looks like the center core for the FH tipped over on the way back to port due to high seas, though. Apparently the OctaGrabber hasn't been reconfigured to hold down FH center cores yet, though its supposed to be ready to do so by the next FH launch.
by krenshala
Thu Apr 04, 2019 10:54 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

Minor news: Looks like SpaceX has successfully started testing the Raptor engine in the StarHopper. It was a short, tethered, burn, but you gotta start somewhere with new engines and rocket.
by krenshala
Thu Mar 07, 2019 1:20 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

As I understand it, they decided not to fund retropropulsive landing of the capsule so they could throw that money toward BFR (or whatever its called this week ;) ). If something comes up to change that, however, - say, NASA wanting to have Dragon 2 land on the moon - I'm sure SpaceX will be more th...
by krenshala
Fri Mar 01, 2019 6:06 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

SpaceX DM-1 flight is to launch tomorrow (2 Mar) at 07:49 UTC (02:49 EST) from Florida, heading to the ISS (with a very small amount of cargo). If this happens, it means SpaceX got a man-capable capsule into orbit before Boeing could fly the Starliner. I won't be awake for this, but hopefully it wil...
by krenshala
Wed Feb 20, 2019 1:33 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

Looks like a F9 will be used to launch a lunar lander tomorrow evening at about 1945 central (US) time. Hopefully I'm home from work in time to watch the launch (via PC).
by krenshala
Fri Feb 15, 2019 1:34 pm
Forum: News
Topic: EMC2 news
Replies: 425
Views: 213517

Re: EMC2 news

Interesting read.

Is it me, or does this design seem to be about where Dr. Bussard was about 15 to 20 years ago?
by krenshala
Thu Dec 20, 2018 4:44 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

SpaceCats preventing the mice from leaving? ;) Getting as much delta-v from the first/second stages will definitely save fuel (and thus delta-v) for the payload. Though, it won't take too much to circularize when you are up in HEO (lower orbital velocity, but more work to get up there in the first p...
by krenshala
Sat Nov 17, 2018 2:36 pm
Forum: News
Topic: SpaceX News
Replies: 2283
Views: 511850

Re: SpaceX News

The mystery to me is that this object seems to be ahead of the stage as the stage overtakes it. The stage has done nothing except a flip end to end while continuing on a ballistic path from MECO. That implies to me that everything that was carried along from launch, ice or whatever is ruled out bec...
by krenshala
Thu Sep 27, 2018 1:29 pm
Forum: News
Topic: 2018 NIAC Symposium
Replies: 9
Views: 8148

Re: 2018 NIAC Symposium

It would be quite humorous if a man-made crystalline structure of paired lithium atoms turned out to be a key material for the Mach Effect device. :roll:

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