Shipyard workers

[mike wightman]

IMTU crystaliron hulls are grown inside a mould in a zero-g environment - freefall or grav technolgy can be used, take your pick.

Superdense and bonded superdense are likewise grown but are collapsed as per canon description using grav manipulation and nuclear damper tech for bonded.

The moulds can be fabricated in space or on the ground.

 

[McPerth]

Note that a USN aircraft carrier of the CVN type has a "keel to waterline" depth of ~40', and a "waterline to flight deck" height of ~75'.
Also note that there are large sponsons above the waterline which extend out considerably from the hull sides.

Therefore, the submerged enclosed volume is at most 30% of the total enclosed volume, and more likely ~25%.

Of course, part of that enclosed volume above the waterline is a very large empty volume known as "aircraft hangar", while the volume below the waterline contains the nuclear reactors, steam turbines, auxiliary diesel generators, tanks for aviation fuel, spare part/dry goods storerooms, and other high-density materials.

TY for the information. Then let's make the USS Ronald Reagan about 25000 dton (to make numbers easy). See that the 120000 dton ship isstil labout 5 times this size...

Of course most of the 150000 people CosmicGamer talks us about aren not involved in the final assembly (probably not even in the shipyard), but may be a reference about the population base needed to build those 25000 dtons (at today's TL 7-8).

 

[rancke]

If you are talking about ones for construction, it wouldn't be anywhere near that easy. Moving huge, massive pieces of material around in zero-g is not simple. It requires much more than throwing up scaffolding. As you know weightless isn't mass-less. When you explore it from that angle, you soon see that it isn't going to be how you portray it.

Well, I'm talking about a similar concept but for use in orbit. Sturdy enough to provide support for construction, but modular.

What exactly does it require that a hangar can provide but space scaffolding cannot?


Hans

 

[Dragoner]

IMTU crystaliron hulls are grown inside a mould in a zero-g environment - freefall or grav technolgy can be used, take your pick.

Superdense and bonded superdense are likewise grown but are collapsed as per canon description using grav manipulation and nuclear damper tech for bonded.

This is most correct, imo, looking at the process and then designing the job specification and analysis around it, it is how it's done in the real world.

IMTU, there are few employees, humans are becoming obsolete today, much less thousands of years from now, humans just aren't designed to do precision machining and such. A spacecraft manufacturer will have some on site management, just to make people feel better if something goes wrong. Hulls take the most time to make, being printed at a molecular level in giant orbital printers; once it reaches a certain level of completion, other modules such as the staterooms, drives will be manufactured/printed and installed by automatic systems. Spools of advanced poly pipe to plumb the spacecraft, a wiring harness similar to a plastic mat, where it isn't just a solid block, all fused to lower resistance and most likely a superconducting compressed powder (copper abandoned long ago), etc., etc. .

 

[Greylond]

Instead of actual wiring, I'd expect fiber optics or some other high capacity/high speed medium. I could see optical cable being extrude or "grown" at a higher TL.

 

[aramis]

Wrap some custom-designed synthetic material around the scaffolding and you've got your enclosed space. Add modular 'work sheds' as required.


Hans

If it's a shirtsleeve environment, you want the fabric on the inside,so it's held in place by the framework.

in my take on the OTU, most slips are established bays, up to 100KTd, but the dreadnoughts are built in sections in bays, and then vacuum assembled in frameworks.

 

[Dragoner]

Instead of actual wiring, I'd expect fiber optics or some other high capacity/high speed medium. I could see optical cable being extrude or "grown" at a higher TL.

afaik, superconducting compressed powder is what is in the labs, which is faster than fiber optic (fib-o also drops out at splices tremendously, iirc); no more individuals runs though, the whole harness is like once big printed circuit. imtu of course.

 

[Greylond]

afaik, superconducting compressed powder is what is in the labs, which is faster than fiber optic

That depends, on several factors. Although with a higher TL I'd actually expect some transmission medium that is better than either.

(fib-o also drops out at splices tremendously, iirc);

All depends on how it is done. If done correctly a Fiber Optic splice shouldn't have hardly any loss. I saw it done in 1986 with test equipment to certify it before it was accepted(I was on the team inspecting and recommending acceptance to our Division Officer)

no more individuals runs though, the whole harness is like once big printed circuit. imtu of course.

Kinda like now where even voice traffic goes over a IP data network.

 

[Dragoner]

Military craft generally do have a fiber optic backup per rules, I'm keeping that so whatever else the wiring is (imtu - not copper), there still will be that.

 

[HG_B]

What exactly does it require that a hangar can provide but space scaffolding cannot?
Hans

Enough mass. Shifting huge massive hull parts around using gantries (space equivalent) in a scaffold system is going to move the scaffolding not the piece.

 

[HG_B]

Military craft generally do have a fiber optic backup per rules, I'm keeping that so whatever else the wiring is (imtu - not copper), there still will be that.

At the TL's with interstellar space craft, no data in the ship is going via copper. We ditched it >10 years ago in our network. Faraday caging ship electronic components against EMP is trivial. The ships hull is the fist cage.

As the ship operates in outer-space near stars, complete EMP protection would be standard even with civilian craft.

 

[rancke]

Enough mass. Shifting huge massive hull parts around using gantries (space equivalent) in a scaffold system is going to move the scaffolding not the piece.

That's just a matter of making the scaffolding sturdy enough. Although that won't even be necessary if the workers use anti-gravity equipment to move the parts.


Hans

 

[Dragoner]

At the TL's with interstellar space craft, no data in the ship is going via copper. We ditched it >10 years ago in our network. Faraday caging ship electronic components against EMP is trivial. The ships hull is the fist cage.

As the ship operates in outer-space near stars, complete EMP protection would be standard even with civilian craft.

That is pretty much what I figure as well, the rest I am just trying to keep within the RAW, and thus military can be figured as multiple redundancies, etc. .

 

[Greylond]

Actually, I'm wondering what kind of transmission medium you can get when dealing with quantum computing. I'll have to ask my brother sometime...

 

[Dragoner]

Actually, I'm wondering what kind of transmission medium you can get when dealing with quantum computing. I'll have to ask my brother sometime...

IIRC it uses electron microscopic scanning with ferrous molecules right now, read a bbc article on it not too long ago, interesting stuff.

 

[aramis]

At the TL's with interstellar space craft, no data in the ship is going via copper. We ditched it >10 years ago in our network. Faraday caging ship electronic components against EMP is trivial. The ships hull is the fist cage.

As the ship operates in outer-space near stars, complete EMP protection would be standard even with civilian craft.

Ever since Fiber was announced as a viable civilian tech, IMTU, control conduits have all been fiber optic runs. Sometimes with short range copper backup.

Fiber optic just the very best way to get data from A to B securely that we have right now, and better, it's able to exceed Shannon's law by going multi-frequency much easier (and with less harmonic noise) than copper or even superconducting copper. Without major physics understanding changes, I can't forsee anything better.

 

[HG_B]

That's just a matter of making the scaffolding sturdy enough. Although that won't even be necessary if the workers use anti-gravity equipment to move the parts.


Hans

Doesn't matter how sturdy. It is the MASS difference I was aiming at.

 

[HG_B]

Ever since Fiber was announced as a viable civilian tech, IMTU, control conduits have all been fiber optic runs. Sometimes with short range copper backup.

Fiber optic just the very best way to get data from A to B securely that we have right now, and better, it's able to exceed Shannon's law by going multi-frequency much easier (and with less harmonic noise) than copper or even superconducting copper. Without major physics understanding changes, I can't forsee anything better.

Yep agreed

The other "stuff" I have IMTU is high temp superconductors, super heat conductors & very efficient, quantum tunneling induced, P-P fusion power plants.

 

[Greylond]

IIRC it uses electron microscopic scanning with ferrous molecules right now, read a bbc article on it not too long ago, interesting stuff.

Not sure, recent papers on it talk about photons.

http://www.popsci.com.au/gadgets/co...antum-router-a-step-toward-a-quantum-internet

http://physics.aps.org/articles/v3/80

That last one is by my brother, which is why I said I'd have to talk to him.

Last time I talked to him in depth was about microwave technology and then he went and did this;
http://www.popsci.com.au/science/energy/quantum-physicists-create-light-out-of-thin-air

 

[Dragoner]

Not sure, recent papers on it talk about photons.

http://www.popsci.com.au/gadgets/co...antum-router-a-step-toward-a-quantum-internet

http://physics.aps.org/articles/v3/80

That last one is by my brother, which is why I said I'd have to talk to him.

Last time I talked to him in depth was about microwave technology and then he went and did this;
http://www.popsci.com.au/science/energy/quantum-physicists-create-light-out-of-thin-air

That is interesting stuff.

I did make a mistake, they are using antiferromagnetic atoms:

http://www.bbc.co.uk/news/technology-16543497