SpaceX recently ran Raptor 3 at a sustained 350 bar. Not bad!
Search found 6180 matches
- Wed Sep 06, 2023 8:56 am
- Forum: News
- Topic: Vortex rocket engine: lighter, more efficient, more reusable
- Replies: 24
- Views: 28463
Re: Vortex rocket engine: lighter, more efficient, more reusable
- Wed Sep 06, 2023 8:51 am
- Forum: News
- Topic: Cross Border Power / XNRGI
- Replies: 4
- Views: 10487
Re: Cross Border Power / XNRGI
A new Canadian company with roots in Vermont has emerged from stealth mode and has ambitious plans to roll out a new grid-scale battery in the year ahead. The longshot storage technology, targeted at utilities, offers four times the energy density and four times the lifetime of lithium-ion batterie...
- Wed Sep 06, 2023 5:34 am
- Forum: General
- Topic: We lost so many members :(
- Replies: 48
- Views: 24417
Re: We lost so many members :(
I am back after about a decade.
I will now wait while everyone thinks “who cares”!
I will now wait while everyone thinks “who cares”!
- Wed Sep 06, 2023 4:33 am
- Forum: News
- Topic: Water based propulsion for deep space efforts
- Replies: 14
- Views: 20802
Re: Water based propulsion for deep space efforts
Yes, I am reprising a VERY old thread, but…
Seems to me that O2 would be a better fuel. O2 is in EVERYTHING, water not so much. Indeed, we would use the H2 from water to get the O2 out of lots of things.
Just a thought!
Seems to me that O2 would be a better fuel. O2 is in EVERYTHING, water not so much. Indeed, we would use the H2 from water to get the O2 out of lots of things.
Just a thought!
- Tue Sep 05, 2023 10:57 pm
- Forum: Design
- Topic: Wikipedia Still Wrong
- Replies: 2
- Views: 995
Wikipedia Still Wrong
I’ve been away for many years but when I looked at the Wiki page on Polywell, the cusp designations are STILL wrong. What they show as the “funny” cusp is really just a point cusp, and what they show as a line cusp becomes a funny cusp as the magnets take on the idealized square shapes that result f...
- Thu Mar 14, 2019 4:40 am
- Forum: General
- Topic: HOW DID YOU FIND OUT ABOUT POLYWELL?
- Replies: 22
- Views: 36253
Re: HOW DID YOU FIND OUT ABOUT POLYWELL?
Tom Liton’s paper in Analog, but it had a cliff hanger ending that took quite a while to resolve.
- Mon Jul 09, 2018 6:59 pm
- Forum: News
- Topic: New John Goodenough battery with high (too high?) energy density
- Replies: 12
- Views: 27316
Re: New John Goodenough battery with high (too high?) energy density
Why? A simple probability calculation: How many battery breakthroughs a week do we have? How many find their way into a working commercially available unit? Your maths are a bit off there. The numerator should be “How many battery breakthroughs a week by the original inventor of the Li-ion battery ”.
- Mon Jul 09, 2018 6:48 pm
- Forum: News
- Topic: SpaceX News
- Replies: 2324
- Views: 1182058
Re: SpaceX News
If it is ejected at about the same time as the first stage, and has a parachute, why not a ramchute and fly it back to the launch site?ladajo wrote:https://www.teslarati.com/spacex-mr-ste ... rendering/
How to catch a fairing... try, try, again...
- Sat Jun 16, 2018 11:50 pm
- Forum: News
- Topic: The list of duds
- Replies: 17
- Views: 29493
Re: The list of duds
If you want a high capacity “flywheel”, look up info on the “launch loop” Properly suspended you can get ~8km/sec of velocity for your kinetics equation.
- Thu May 03, 2018 8:05 pm
- Forum: News
- Topic: Lawaranceville E-Newsletter
- Replies: 880
- Views: 537992
Re: Lawaranceville E-Newsletter
Investment club anyone?
- Thu May 03, 2018 2:27 pm
- Forum: General
- Topic: Donald Trump - Time Lord.
- Replies: 4
- Views: 16513
Re: Donald Trump - Time Lord.
TARDIS, not pelvic thrust.
- Tue Apr 24, 2018 8:46 am
- Forum: News
- Topic: SpaceX News
- Replies: 2324
- Views: 1182058
Re: SpaceX News
Sorry dude but that much power is NOT boring.ladajo wrote:And another boring launch...
<yawn>
Re: EMC2 news
What about handing the hardware over to other scientists to allow them to confirm the findings and/or explore the concept further with additional experiments that might not have been contemplated during their original testing of the concept? I'm sure there are other people who would love a chance t...
- Thu Feb 01, 2018 7:58 pm
- Forum: News
- Topic: SpaceX News
- Replies: 2324
- Views: 1182058
Re: SpaceX News
What make ANYONE think it is “lost”. Gone stealth, maybe. But lost?
- Wed Jan 31, 2018 9:41 pm
- Forum: General
- Topic: Comets can’t explain weird ‘alien megastructure’ star after all
- Replies: 29
- Views: 53603
Re: Comets can’t explain weird ‘alien megastructure’ star after all
How is this for speculation. There is a smallblack hole or neutron star orbiting the visible star and it keeps the orbital debris from coalescing. Then, on occasion, it gravity lenses the star light toward earth.