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.

(Vice)   SpaceX building Mars rocket so big, it's positively massive   (motherboard.vice.com) divider line 29
    More: Cool, SpaceX, ion engines, combustion chambers, liquid oxygen, oxidants, multistage rockets, weight ratio, liquid hydrogen  
•       •       •

6589 clicks; posted to Main » on 13 Mar 2014 at 7:50 AM (37 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



29 Comments   (+0 »)
   
View Voting Results: Smartest and Funniest
 
2014-03-13 02:00:41 AM  
cool.      But I wish we could do better than using sixties era tech to get out of the gravity well.
 
2014-03-13 02:25:32 AM  
Oh, my God! It looks like a huge...

/rocket
 
2014-03-13 06:38:47 AM  

sithon: cool.      But I wish we could do better than using sixties thirties era tech to get out of the gravity well.


Still, got a better way that is actually feasible?
 
2014-03-13 08:00:58 AM  

Tr0mBoNe: sithon: cool.      But I wish we could do better than using sixties thirties era tech to get out of the gravity well.

Still, got a better way that is actually feasible?


Dilithium crystals?
 
2014-03-13 08:01:23 AM  
Man I should boot up Kerbal. I was designing a mission to Duna and got frustrated at my efforts to dock modules together in orbit and put the game aside for a while.
 
2014-03-13 08:02:37 AM  

phamwaa: Tr0mBoNe: sithon: cool.      But I wish we could do better than using sixties thirties era tech to get out of the gravity well.

Still, got a better way that is actually feasible?

Dilithium crystals?


Negative mass?
 
2014-03-13 08:05:59 AM  
Subby, how massive was it?
 
2014-03-13 08:07:21 AM  
"Every time I think something is going to be massive, it just turns out to be all balls."

cdn.newadnetwork.com
 
2014-03-13 08:07:33 AM  
The Saturn V looks on your shenanigans and says "meh".
 
2014-03-13 08:09:54 AM  
That's what she said.

unrealitymag.bcmediagroup.netdna-cdn.com
 
2014-03-13 08:16:59 AM  
Musk wants to build one big enough to carry 100 colonists to Mars at once?  That's a long trip and a lot of people.
 
2014-03-13 08:19:55 AM  
I'm glad for people like Elon Musk and Burt Rutan.  Hell, I'll even say Richard Branson... but not quite as enthusiastically.
 
2014-03-13 08:21:54 AM  

joedaly.net

Put your hand in my pocket Grab onto my rocket Feels so good to see you Lucille!

 
2014-03-13 08:22:49 AM  

MaudlinMutantMollusk: Oh, my God! It looks like a huge...

/rocket


I guess I should just go ahead and post this.
 
2014-03-13 08:25:13 AM  

Whole Wheat: The Saturn V looks on your shenanigans and says "meh".


For the moment. (Raptor will out-power the Saturn 5's F1 first stage engines and be reusable)
 
2014-03-13 08:35:56 AM  

Whole Wheat: The Saturn V looks on your shenanigans and says "meh".


The Saturn V had 5  engines with 1.5 million lbs of thrust each for a total of 7.5 million lbs of thrust. SpaceX is planning a much more efficient rocket that can theoretically be refilled at Mars using methane which can be produced on Mars that will be 9 engines with 1 million lbs of thrust each for a total of 9 million lbs of thrust.  Its higher ISP of 363 compared to F-1s in Saturn V of 303  (ISP is a measure of fuel efficiency).
So its quite possible this rocket will have a higher thrust to weight ratio before payload.
 
2014-03-13 08:47:32 AM  

Tr0mBoNe: Still, got a better way that is actually feasible?


I know you said "feasible"...

IMHO, this is our best bet for cheaply getting off this rock: Space Elevator... (Man, is that dumb sounding.) There are a couple tiny technical challenges... (actually, they're huge... but nothing that violates any known physical laws...)
 
2014-03-13 08:48:32 AM  
Mr. Musk has experience with vehicles that burn.
i1280.photobucket.com
Hot like Tesla.
 
2014-03-13 09:16:04 AM  

Hobodeluxe: Musk wants to build one big enough to carry 100 colonists to Mars at once?  That's a long trip and a lot of people.


Somewhat doable if there's facilities to meet them on arrival.
The current problem is that we have to walk with our habitat (enough for at least a year) and return rocket to make a proper round trip. Its the same problem we had when going to the moon (altho the hab only had to last a week).

If those things are waiting for you then you just need enough habitat and fuel to get the passengers to the surface. It doesn't have to be a comfortable ride out either, since the colonists can recuperate after arrival.

/Hence why the one way trip idea is so tempting.
/Treat Mars as a permanent settlement and you can skip sending thousands of tons in return equipment.
 
2014-03-13 09:42:15 AM  
Sounds legit.
 
2014-03-13 09:56:15 AM  

Destructor: Tr0mBoNe: Still, got a better way that is actually feasible?

I know you said "feasible"...

IMHO, this is our best bet for cheaply getting off this rock: Space Elevator... (Man, is that dumb sounding.) There are a couple tiny technical challenges... (actually, they're huge... but nothing that violates any known physical laws...)


There's a lot more than the name that's dumb when it comes to Space Elevators. Even for Otis, making the elevator was trivial... he never invented it. Making it one of the safest systems in operation was not trivial.

There are two real problems to deal with. Moving mass to orbit and moving people to orbit. We are squishy so we need gentle(ish) acceleration. I think the best way for that is a carrier plane and rocket boost from high altitude horizontal flight. We need to stop launching mass from earth and to start building in space.
 
2014-03-13 10:12:28 AM  
Friend of mine just got a job with them.
 
2014-03-13 10:39:02 AM  

flynn80: Friend of mine just got a job with them.


I hear Elon's got openings for armed security guards who like wearing spandex and funny looking helmets.
I'll sign up after I lose a few pounds.

/"No, Mr.Bond, I expect you to..."
/*BRATATATATATAT*
/"DAAMMIT MAN, you're supposed to wait till I finish!"
/"Sorry Boss..."
/"Oi... just clean this mess up. I'm not paying overtime".
 
2014-03-13 11:35:12 AM  

Tr0mBoNe: There are two real problems to deal with. Moving mass to orbit and moving people to orbit. We are squishy so we need gentle(ish) acceleration. I think the best way for that is a carrier plane and rocket boost from high altitude horizontal flight. We need to stop launching mass from earth and to start building in space.


Planes are way sexy. But altitude is meaningless unless you get a lot of it. The Space Elevator would take you beyond geosynchronous orbit (26,000 miles) That's REALLY high up there.  A plane can only do what, 40 miles up? Atmosphere effectively ends at about 100. The Virgin Galactic guys can get you into space, but only for a short while.

Staying there is the real trick. What counts to make it to Low Earth Orbit is speed.  You need to hit ~18,000 miles per hour (much faster if you want GEO).

There's a reason the shuttle took off like a rocket, and came back as a glider.  (As proof: If I'm wrong, that's what companies like SpaceX would be building... It really all comes down to cost. Maximize returns for a minimum of cost.)
 
2014-03-13 12:38:34 PM  
The Man Who Sold The Moon
 
2014-03-13 02:07:08 PM  
ts3.mm.bing.net
The old ski slope.
 
2014-03-13 02:43:24 PM  
 
2014-03-13 04:20:14 PM  

stuffy: The old ski slope.


Both the book and movie were great, "When Worlds Collide". After Worlds Collide wasn't bad either. Heh... You know, I think that was actually the first SF book I ever read... (I don't know why.)
 
2014-03-14 12:21:24 AM  
Just a reusable, restartable, reliable engine would be great.
 
Displayed 29 of 29 comments

View Voting Results: Smartest and Funniest


This thread is closed to new comments.

Continue Farking
Submit a Link »






Report