SpaceX News

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

Moderators: tonybarry, MSimon

ladajo
Posts: 6204
Joined: Thu Sep 17, 2009 11:18 pm
Location: North East Coast
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby ladajo » Tue Dec 18, 2018 4:14 pm

I missed the live feed, was off working in a hole. However, coming back to check, I find out they punted the launch until tomorrow 0907 EST due to an anomalous sensor reading on the booster first stage.
So exciting.
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)

paperburn1
Posts: 2457
Joined: Fri Jun 19, 2009 5:53 am
Location: Third rock from the sun.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby paperburn1 » Wed Dec 19, 2018 3:42 am

I am not a nuclear physicist, but play one on the internet.

paperburn1
Posts: 2457
Joined: Fri Jun 19, 2009 5:53 am
Location: Third rock from the sun.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby paperburn1 » Wed Dec 19, 2018 4:26 am

To bad it is not a night launch, it would make a nice show for the east coast :(
I am not a nuclear physicist, but play one on the internet.

ladajo
Posts: 6204
Joined: Thu Sep 17, 2009 11:18 pm
Location: North East Coast
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby ladajo » Wed Dec 19, 2018 1:34 pm

"(I believe in hopes of putting the payload closer to the final orbit saving satellite propellant which would add life to satellite operations)"
Hmm. This is big. Honestly hadn't thought about that before. Although, I know there have been missions in the past where lifetime took a major hit because of excessive burns being needed to get on station. Once they get on orbit robot fueling sorted here in the next couple of years, it will be interesting to see how the launch schedules slow down for heavy lifts, as lifetimes leap.
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)

ladajo
Posts: 6204
Joined: Thu Sep 17, 2009 11:18 pm
Location: North East Coast
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby ladajo » Wed Dec 19, 2018 3:58 pm

And another punt. Same issue as yesterday. Launch date now TBD.
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)

ladajo
Posts: 6204
Joined: Thu Sep 17, 2009 11:18 pm
Location: North East Coast
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby ladajo » Thu Dec 20, 2018 3:15 pm

A series of misfortunate events... punt gain from this morning for weather. No new launch window given yet...
Something REALLY doesn't want this bird on orbit!
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)

krenshala
Posts: 914
Joined: Wed Jul 16, 2008 4:20 pm
Location: Austin, TX, NorAm, Sol III
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby krenshala » Thu Dec 20, 2018 4:44 pm

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 place). Going from LEO to GEO takes about 4km/s (high thrust) to 6km/s (low thrust) depending on propulsion type, and thus how much benefit you gain from Oberth Effect on the transfer burn (higher thrust, higher Oberth Effect benefit). This has a lower target orbit, but the same math applies. The more delta-v you can get from the booster stages, the less you need to get from the payload's fuel.

paperburn1
Posts: 2457
Joined: Fri Jun 19, 2009 5:53 am
Location: Third rock from the sun.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby paperburn1 » Sat Dec 22, 2018 10:28 pm

SpaceX is standing down from Saturday's launch attempt due to strong upper level winds.
decided to play kerbal space instead.... :?

We are now targeting December 23rd for launch of the United States
I am not a nuclear physicist, but play one on the internet.

hanelyp
Posts: 2255
Joined: Fri Oct 26, 2007 8:50 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby hanelyp » Sat Dec 22, 2018 11:31 pm

Until we can launch despite common winds, space flight won't be where we want it.
The daylight is uncomfortably bright for eyes so long in the dark.

paperburn1
Posts: 2457
Joined: Fri Jun 19, 2009 5:53 am
Location: Third rock from the sun.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby paperburn1 » Sun Dec 23, 2018 4:37 pm

Up Up and Awayyyyy...
I am not a nuclear physicist, but play one on the internet.

paperburn1
Posts: 2457
Joined: Fri Jun 19, 2009 5:53 am
Location: Third rock from the sun.
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby paperburn1 » Wed Jan 02, 2019 2:22 pm

well is seems it is a technology demonstrator he is building.

https://www.nextbigfuture.com/2019/01/t ... opper.html
I am not a nuclear physicist, but play one on the internet.

Maui
Posts: 577
Joined: Wed Apr 09, 2008 12:10 am
Location: Madison, WI
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby Maui » Fri Jan 04, 2019 12:09 am

The demonstrator may end up waiting on a pad, though:
https://www.nextbigfuture.com/2019/01/c ... 0_c_kjcWPF

This thing so far looks like something I would build ;)

EDIT: New pics-- loving the install method for the American Flag decal:
https://twitter.com/austinbarnard45/sta ... 9908691970

kunkmiester
Posts: 876
Joined: Thu Mar 12, 2009 3:51 pm
Contact:

Re: SpaceX News

Postby kunkmiester » Fri Jan 04, 2019 2:08 am

Was it here I was reading about him wanting to use steel?

It's not just strength ratios to worry about, a mostly carbon fiber rocket would have a different radiation risk.
Evil is evil, no matter how small

hanelyp
Posts: 2255
Joined: Fri Oct 26, 2007 8:50 pm
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby hanelyp » Fri Jan 04, 2019 4:57 am

As I understand it, carbon fiber produces fewer secondaries from cosmic rays than a steel structure. A matter of atomic number.
The daylight is uncomfortably bright for eyes so long in the dark.

Maui
Posts: 577
Joined: Wed Apr 09, 2008 12:10 am
Location: Madison, WI
[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Re: SpaceX News

Postby Maui » Fri Jan 04, 2019 5:28 am

Yes steel. AFAIK, the reason he’s tweeted about isre-entry heating, not radiation— but the radiation seems like a fair point too. Steel holds strength in high temps unlike carbon fiber. Rather than use an ablative heat shield, active cooling using fuel as the heat sink. Also, he claims to have a new alloy.


[phpBB Debug] PHP Warning: in file [ROOT]/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1236: count(): Parameter must be an array or an object that implements Countable

Return to “News”

Who is online

Users browsing this forum: No registered users and 4 guests