NASA-backed fusion engine could cut Mars trip down to 30 day

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

Moderators: tonybarry, MSimon

Post Reply
vernes
Posts: 135
Joined: Tue May 13, 2008 10:22 am
Location: The Netherlands

NASA-backed fusion engine could cut Mars trip down to 30 day

Post by vernes »

NASA-backed fusion engine could cut Mars trip down to 30 day(theregister)
NASA, and plenty of private individuals, want to put mankind on Mars. Now a team at the University of Washington being funded by the space agency is about to start building a fusion engine that could get humans there in just 30 days and make other forms of space travel obsolete.

Skipjack
Posts: 6110
Joined: Sun Sep 28, 2008 2:29 pm

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by Skipjack »


vernes
Posts: 135
Joined: Tue May 13, 2008 10:22 am
Location: The Netherlands

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by vernes »

Did some searches first, didn't find it.

williatw
Posts: 1912
Joined: Mon Oct 12, 2009 7:15 pm
Location: Ohio

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by williatw »

http://www.popsci.com/science/article/2 ... eople-mars

Anybody heard anything about this lately? According to the link the testing was supposed to be this summer.

AcesHigh
Posts: 652
Joined: Wed Mar 25, 2009 3:59 am

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by AcesHigh »

there is an interview from the Starship Congress about other NASA scientists working on a Fusion Pulse Propulsion, that could get us to Pluto in less than 6 months (without decelerating however... 12 months with deceleration)
http://www.youtube.com/watch?v=8tI9uQ4YJSQ

Skipjack
Posts: 6110
Joined: Sun Sep 28, 2008 2:29 pm

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by Skipjack »

I read about that one, but I like MSNWs approach better. It has more thrust and is therefore accelerating faster.

AcesHigh
Posts: 652
Joined: Wed Mar 25, 2009 3:59 am

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by AcesHigh »

which one has more thrust? And do you have the thrust figures?

The travel times can mean anything. If he talks about 3 months to Mars, but the mission plan includes a BIG ship for dozens of people and equipment to create a base there, it can actually have more thrust per kg (the engine) than the other which can arrive in Mars in 30 days, but maybe the mission plan considers a tiny ship for like 3-5 people, crammed together in the small space, landing on Mars, and then returning.

kcdodd
Posts: 722
Joined: Tue Jun 03, 2008 3:36 am
Location: Austin, TX

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by kcdodd »

Yeah travel time says more about the exhaust velocity of the rocket, or specific impulse, than about the thrust. Unless of course the thrust is so low that acceleration becomes the majority of the travel time.
Carter

Skipjack
Posts: 6110
Joined: Sun Sep 28, 2008 2:29 pm

Re: NASA-backed fusion engine could cut Mars trip down to 30

Post by Skipjack »

The MSNW LLC fusion driven rocket uses a lithium liner which becomes exhaust mass too. More exhaust mass means more thrust and faster acceleration. Isp is important, but not everything. If you are stuck slowly spiraling yourself out of earths gravity well for weeks, then all that Isp is useless.

Post Reply