Search found 2484 matches
- Mon Jul 08, 2019 12:51 am
- Forum: News
- Topic: Z-Pinch Renaissance
- Replies: 208
- Views: 197610
Re: Z-Pinch Renaissance
not my work but relevant underlined comments are mine. Consider a 1,000 ton spacecraft with a 10,000 km/s exhaust velocity and an acceleration of 0.722 m/s/s. For a 1 AU trip at constant acceleration, flipping at the midpoint, it will take 10.5 days and consume 66 tons of propellant/fuel. Now let's ...
- Thu Jul 04, 2019 8:36 pm
- Forum: News
- Topic: Z-Pinch Renaissance
- Replies: 208
- Views: 197610
Re: Z-Pinch Renaissance
one g was for fun
the other figure was making so many assumptions it probably not realistic.
the other figure was making so many assumptions it probably not realistic.
- Wed Jul 03, 2019 1:24 pm
- Forum: News
- Topic: Z-Pinch Renaissance
- Replies: 208
- Views: 197610
Re: Z-Pinch Renaissance
I found this list of destination for one g travel The Moon / Luna: Closest to Earth (Supermoon): 356,577 km Travel time (at 9.80665 m/s2, no deceleration): 2h 22m 12s Travel time (at 9.80665 m/s2, decelerating halfway): 3h 20m 24s Mercury: Closest to Earth: 77.3 million km Travel time (at 9.80665 m/...
- Wed Jul 03, 2019 2:50 am
- Forum: News
- Topic: Z-Pinch Renaissance
- Replies: 208
- Views: 197610
Re: Z-Pinch Renaissance
These are very rough numbers ( with huge assumptions ) but your looking at 60 days will get about to Jupiter. 90 days will get you to Saturn. with a flip and slowdown because what is the point of going without stopping for a visit.
- Tue Jul 02, 2019 3:04 am
- Forum: News
- Topic: Z-Pinch Renaissance
- Replies: 208
- Views: 197610
Re: Z-Pinch Renaissance
Not many, still limited by that vaccum bottle effect , only way to get rid of heat is by radiationAcesHigh wrote:Has any paper mentioned some mission profile?
I would like to see what they expect with 10 million ISP and 1 meganewton of thrust.
and I wonder how many of these could you put in a ship...
- Thu Jun 27, 2019 12:34 pm
- Forum: General
- Topic: Extraterrestrial colony companies
- Replies: 44
- Views: 71481
Re: Extraterrestrial colony companies
Of course if you import too much gold, the price of gold crashes. As has been seen when Spain imported gold plundered from the Americas, and the California gold rush. Even the thought of too much gold can crash the market, a very real possibility because gold prices are over inflated even above the...
- Sun Jun 23, 2019 12:46 pm
- Forum: General
- Topic: The Collapse Of Complex Societies
- Replies: 8
- Views: 18771
Re: The Collapse Of Complex Societies
I agree, most laws end up being passed to keep the Status Quo rather than develop innovation.
Polywell seems to be one of the victims of that process.
Polywell seems to be one of the victims of that process.
- Tue Jun 18, 2019 11:43 am
- Forum: News
- Topic: Thermal battery with 6-8 times the energy density of lithium
- Replies: 10
- Views: 19484
Re: Thermal battery with 6-8 times the energy density of lithium
hmmm,,,, thermel electric seems to be the new gig.
https://cleantechnica.com/2019/06/17/si ... ge-system/
https://cleantechnica.com/2019/06/17/si ... ge-system/
- Tue Jun 04, 2019 6:32 pm
- Forum: General
- Topic: Factor X have we finally found the fountain of Youth?
- Replies: 378
- Views: 302494
Re: Factor X have we finally found the fountain of Youth?
China now claims to have two "Enhanced babies" with a third on the way. At first it was touted that is was just HIV resistance but with the third birth it was also shown intelligence and memory enhancements were part of the package.
- Fri May 31, 2019 12:34 pm
- Forum: News
- Topic: Direct O2 evolution in collisions of carbon dioxide with surfaces
- Replies: 7
- Views: 13700
Re: Direct O2 evolution in collisions of carbon dioxide with surfaces
Aero wrote:Does the character of the surface have any effect on the efficiency of oxygen production? I'm thinking along the lines of a catalyst. And there must be an energy level sweet spot to maximize conversion.
Ohhhh, I like where your headed with this idea.
- Fri May 31, 2019 12:32 pm
- Forum: News
- Topic: SpaceX News
- Replies: 2324
- Views: 1182007
Re: SpaceX News
I heard a rumor that in simulation it showed hot gases were impinged on flight surfaces during descent.
- Wed May 22, 2019 12:16 pm
- Forum: News
- Topic: Lockheed Martin news
- Replies: 56
- Views: 93573
Re: Lockheed Martin news
Hmm, Just saw a request for a quote for a vacuum tank with six port holes made out out of stainless steel with some very high specs that looks like a enlarged LM machine, about 7 meter long and 1.5 meters wide. From a friend of mine in manufacture for the Gov. I am going to ask him to send the link ...
- Sat May 18, 2019 2:51 am
- Forum: General
- Topic: Factor X have we finally found the fountain of Youth?
- Replies: 378
- Views: 302494
Re: Factor X have we finally found the fountain of Youth?
breakthrough it determining cell degreation
https://www.youtube.com/watch?v=9gxogiUvVkk
telomeres and triggers
https://www.youtube.com/watch?v=9gxogiUvVkk
telomeres and triggers
Re: EMC2 news
Notably hidden among the budget items for NASA was a $100 million allocation to develop a nuclear thermal rockets.
Does anybody know if polywell tried to get their fingers into that rice bowl?
Does anybody know if polywell tried to get their fingers into that rice bowl?
- Wed Apr 24, 2019 8:21 pm
- Forum: News
- Topic: SpaceX News
- Replies: 2324
- Views: 1182007
Re: SpaceX News
@NASA statement from today: "SpaceX and NASA are just beginning the mishap investigation process. We don’t yet know what impact this will have to our target schedules. We have full confidence in SpaceX. Additional information will be released as it is available."