Skip to content
 
If you can read this, either the style sheet didn't load or you have an older browser that doesn't support style sheets. Try clearing your browser cache and refreshing the page.

(Daily Mail)   UK planning a nuclear powered rocket to Mars. And they have a flag   (dailymail.co.uk) divider line
    More: Cool  
•       •       •

491 clicks; posted to STEM » on 12 Jan 2021 at 5:57 PM (22 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



12 Comments     (+0 »)
View Voting Results: Smartest and Funniest
 
2021-01-12 5:38:17 PM  
i.imgflip.comView Full Size
 
2021-01-12 5:49:32 PM  
Fark user imageView Full Size
 
2021-01-12 5:59:26 PM  
Not sure if it's meant to be a constant acceleration type propulsion or a big bang at the start to launch and coast. If it is constant acceleration ninety days would mean less than a tenth of a G, far far less, so no earth-like artificial gravity for the trip.  1G acceleration would get you there in three or four days.

/Obligatory "as soon as they can work out how to make it leak oil" joke.
 
2021-01-12 6:09:29 PM  
Hopefully they work on a nuclear salt water rocket. See Scott Manley's recent video:

The Nuclear Salt Water Rocket - Possibly the Craziest Rocket Engine Ever Imagined.
Youtube cvZjhWE-3zM
 
2021-01-12 6:10:59 PM  
encrypted-tbn0.gstatic.comView Full Size


God bless the brave crew
 
2021-01-12 6:16:26 PM  
Fark user imageView Full Size
 
2021-01-12 6:41:05 PM  

Carter Pewterschmidt: Not sure if it's meant to be a constant acceleration type propulsion or a big bang at the start to launch and coast. If it is constant acceleration ninety days would mean less than a tenth of a G, far far less, so no earth-like artificial gravity for the trip.  1G acceleration would get you there in three or four days.

/Obligatory "as soon as they can work out how to make it leak oil" joke.


They're talking about nuclear thermal rockets, along the lines of NERVA.  They're relatively high-thrust things -- not enough for launching from Earth, but they do short enough burns that you have the same sort of orbital dynamics as with chemical engines.

I'm sure you could build them for longer burns at lower thrust, but you take a big hit from not having the Oberth effect on your side that way.  That's unavoidable with low-thrust technologies like ion engines, but those have such high Isp that you can tolerate that and still get a ton of delta-v in the inner solar system.  Nuclear thermal isn't that efficient -- Isp is only around 800 or 1000 s.
 
2021-01-12 7:53:55 PM  
Make it so.
 
2021-01-12 9:50:40 PM  
i.imgur.comView Full Size
 
2021-01-12 11:27:15 PM  
That's all well and good, but can they see Swindon from there?
 
2021-01-13 5:36:58 AM  

drogg: That's all well and good, but can they see Swindon from there?


Where do you think they're launching from?

Fark user imageView Full Size
 
2021-01-13 9:52:45 AM  
gargaro.comView Full Size
 
Displayed 12 of 12 comments

View Voting Results: Smartest and Funniest

This thread is closed to new comments.

Continue Farking




On Twitter


  1. Links are submitted by members of the Fark community.

  2. When community members submit a link, they also write a custom headline for the story.

  3. Other Farkers comment on the links. This is the number of comments. Click here to read them.

  4. Click here to submit a link.