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Old 21st Jun 2014, 05:28 AM   #1
Starbase1
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Default Space - Beamed core antimatter rocket

Couldn't resist starting a new project, a beamed core antimatter rocket. There's one image out there really, and I think I may be able to do better.

The beamed core antimatter rocket is a serious design, which hits normal matter with anti protons, which produces most of the energy as charged particles. This is good as they can then be deflected with magnetic fields, and directed out the rear of the rocket for thrust. (The roughly torus shaped units produce the fields to channel these charged pions)

I intend to put a hexagonal truss around the stack of magnetic units.

One ref pic, and the early start attached.
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Old 21st Jun 2014, 06:07 AM   #2
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Nice work
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Old 21st Jun 2014, 08:28 AM   #3
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Thanks Bobby...

Added detail on the magnetic units, added a volumetric exhaust, and trusswork around the magnetic stack.

Nick
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Old 21st Jun 2014, 08:57 AM   #4
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Looking good.
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Old 22nd Jun 2014, 06:18 AM   #5
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Thanks Graham, suggestions very welcome!

I've been working on the ends of the sections with trusswork and the stack of magnetic confinement toroids, here are the results:
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Old 22nd Jun 2014, 07:59 AM   #6
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You keep coming up with things I've never heard about. It keeps life interesting.

As always, you're doing well with this.
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Old 22nd Jun 2014, 08:21 AM   #7
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Quote:
Originally Posted by Rigel View Post
You keep coming up with things I've never heard about. It keeps life interesting.

As always, you're doing well with this.
That's actually my master plan at the moment - I noticed that the things people offer to pay for the use of tend to be advanced space concept vehicles, from various eras, where there's not much visual material out there...

So I'm reading lots about interstellar and Kuiper belt capable craft, to try and build up a library of them...
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Old 22nd Jun 2014, 10:43 AM   #8
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Very nice.
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Old 22nd Jun 2014, 11:11 AM   #9
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Thanks Dave,

Now adding the antimatter containment, (wrapped in gold foil), and some nurnies that might be injectors.

Nick
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Old 22nd Jun 2014, 06:22 PM   #10
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Lovely, and practical-looking detailing as usual, Nick! I've only ever seen the one illustration of this one, so having yours around will be great. I must admit, I've no idea how this works. Must Google....
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Old 23rd Jun 2014, 12:02 AM   #11
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Quote:
Originally Posted by Drell-7 View Post
Lovely, and practical-looking detailing as usual, Nick! I've only ever seen the one illustration of this one, so having yours around will be great. I must admit, I've no idea how this works. Must Google....
Thanks

It's fairly simple in concept - direct anahilation of antimatter with normal matter, and the charged particles that emerge directed out the rear magnetically for reaction mass.

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Old 23rd Jun 2014, 02:12 PM   #12
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I think this is getting close to finished, so please chip in if something does not look right...

This update, the front, adding an avionics bay unit, and in front of that the main payload area.

I was unsure what to do for the payload area, logically I think it would just have a probe or some probes held on the front, open and uncovered so the instruments could work dur8ing the flight, but in the end I just went for a cylinder with a bunch of almost random nurnies. Not sure I get away with it, but I don't plan on getting as close as the most deta8illed shots of the nose.

Nick
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Old 23rd Jun 2014, 06:14 PM   #13
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It just gets better. The only thing I can think of is some kind of dish antenna to send data back to Earth.
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Old 23rd Jun 2014, 11:56 PM   #14
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Quote:
Originally Posted by DaveK View Post
It just gets better. The only thing I can think of is some kind of dish antenna to send data back to Earth.
Yes, I was thinking about that, but could not work out a good place to put it. I'm guessing that it would not be much use to try and send signals back through antimatter exhaust, which rather implies some sort of long boom to mount it on... But that would look rather odd...

I'm therefore thinking of just leaving it off, as was done in the only reference illustration I found...

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Old 24th Jun 2014, 03:54 AM   #15
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Cracking job, once again! I love the look you get into your space vehicles. I agree about the antenna, it would be tough to make something that looks good, but I'm sure you could come up with something
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Old 24th Jun 2014, 04:19 AM   #16
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Cracking job, once again! I love the look you get into your space vehicles. I agree about the antenna, it would be tough to make something that looks good, but I'm sure you could come up with something
Thank You!

Thing is, even if I add a boom, I suspect it would need to be very long, and you'd need something on the other side to balance it... I suspect that for a vehicle like this, you might need so else entirely, perhaps an optical, laser based system?
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Old 24th Jun 2014, 04:35 AM   #17
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How about a forward facing signal laser at the back end and a short boom with a directional mirror at the front end facing the rear. The apparent length of the boom would be increased by the angular difference?
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Old 24th Jun 2014, 05:49 AM   #18
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If it's optical it wouldn't need to be offset, I'd just assume it's in a hull nurnie somewhere...
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Old 24th Jun 2014, 07:02 AM   #19
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Very lovely. The only thing that bothers me is not the lack of antennae, but the way that the support trusswork presses into the antimatter containment tanks. At first I thought that the tanks had circumferential indents that corresponded to where the truss struts intersected them, but in at least one image above it appears that what look like indents are just shadows being cast by the struts--the tanks are smooth-sided (except for where they're intersected by the trusswork).

I would imagine antimatter containment tanks would need to be quite structurally-sound, but the truss struts appear to "pinch" the tanks. But, this is just a minor nit; this is really marvelous work!
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Old 24th Jun 2014, 08:24 AM   #20
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Very lovely. The only thing that bothers me is not the lack of antennae, but the way that the support trusswork presses into the antimatter containment tanks. At first I thought that the tanks had circumferential indents that corresponded to where the truss struts intersected them, but in at least one image above it appears that what look like indents are just shadows being cast by the struts--the tanks are smooth-sided (except for where they're intersected by the trusswork).

I would imagine antimatter containment tanks would need to be quite structurally-sound, but the truss struts appear to "pinch" the tanks. But, this is just a minor nit; this is really marvelous work!
Thank you very much for the constructive criticism!

The one reference images seemed to have pinches around the gold tanks, and I thought it added interest to the shape, so I kept it. There really is a narrower section round there. (Maybe reflections are confusing matters?)

I'll do some ortho views shortly.

I then did a rail extrude to make the 'outer pipe' pair, in the shape of a square with rounded corners. I don't have any real structural function in mind for them...

I'm not at all sure what an antimatter containment tank would look like, (and I'm not convinced anyone else does either!), so perhaps a gold foil lagged boiler is as good as anything. The amounts involved would be tiny, (maybe a gramme?), so it would all be about keeping them cold and out of contact with normal matter. It does seem as if people expect tiny frozen flakes of anti-hydrogen to be a reasonable form of anti matter, so I figure good (very good) thermal insulation would be needed, and something thick enough to protect from meteor strikes too.

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Old 24th Jun 2014, 02:50 PM   #21
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View of the antimatter tanks in modeler
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Old 24th Jun 2014, 02:57 PM   #22
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OK, I think the end is very near now...

Red bands added to the payload module
Texture fixes on the payload module
additional details just in front of the engine bell
Retextured engine bell (outer)
Redid the avionics bay hatches, for better smoothing

There's just one thing bugging me - the volumetric light is showing up in the VPR preview, but not in the render?!?! WTF? See last image.And I had it tuned so nicely...

Nick
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Old 25th Jun 2014, 01:19 PM   #23
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After a glitch with rendering volumetric lights, I've now tuned it up, and I'm saying this one is done.

Finished renders shortly!
Nick
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