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Double Jumping

Horatius

SOC-12
In Traveller, when you jump it creates a tunnel that takes roughly seven days to travel through. At the end of the tunnel is your destination, usually another star system at least 1 parsec away. While in that tunnel through jumpspace, you cannot maneuver, change direction or communicate with the outside world.

Ok. I can live with that. But what if something interesting happened?

A jump begins when the Jump drive is 'aimed' at a system. A mathematician (astrogator) or computer program doing the same job aims the ship at a star system. The fusion power plant then burns sufficient fuel to generate energy which is channeled through the jump drive. The jump drive then begins to distort space until a tunnel forms that connects points A and B without going through the intervening space. (At least in this universe.) All the energy that was created is released in a microsecond, pushing the vessel through the tunnel.

BUT... what if, during the jump, an enterprising young individual were to re-engage the jump drive? If the ship carried sufficent fuel for a second jump, why couldn't the jump drive ne recharged and reactivated during the jump? It would be starting a new jump from within jumpspace. WHat would happen?

As I see it, the Jump drive reaches out of normal space and creates a tube through J-space. The tube itself passes through n# of dimensions (n being 4,5,9 or 11. Take your pick.). So if a new tube were begun with its starting point already in a higher dimension, where would the tube wind up? Would it reconnect with the lower energy state in a week by locking onto another vessel's jump path? (Unlikely, but possible) Like an electron jumping energy states and looking for the closest stable energy state? Or would it simply precipitate out of j-space? Or could that trick be used to end a jump prematurely? (Like an electron going to its ground state.)

If it allowed a ship to return to normal space, would the vessel retain its j-space pseudo-velocity? [a jump 1 vessel has the equivilent velocity of about 168c.] That would make for a nice explosion.

I made the analogy of putting a tennis ball atop a basketball and bouncing them. The vessel would move faster and further than expected, kind of a deliberate misjump, but re-entry into normal space would be violent and unstable.

Does anyone have any thoughts on this?
 
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And now for the proper answer. A lot depends on if YTU allows jump numbers higher than 6 to be accessible other than by misjump.

It has always been part of MTU that this is indeed possible at TLs above 20.

I like the reasoning behind your method.
 
I forget where I read it, but this kind of thing has been tried. At best, nothing happens (the jump computer goes eek and falls over). Otherwise, it results in the total destruction of the ship (presumably, anyway - they're never heard from again).
 
Wouldn't you need to re-enter normal space in order to get bearings and re-align for the next jump?

Doesn't Jumping require that the astorgator take into account variables that you sort of need to "be there" for? (Mainly gravitic influences?)
 
I once had a TL18 world that built a ship with two jump-6 drives (antimatter powered). I said the drives were synchonized to activate together, but the trouble was that no one really knew what would happen.

It might:</font>
  • Blow up (the majority opinion)</font>
  • Melt down (a strong minority)</font>
  • Just sit there (also a strong opinion)</font>
  • Do jump-6</font>
  • Do jump-12 (6+6)</font>
  • Do jump-36 (6x6)</font>
  • Do jump-46,656 (6^6)!!!!</font>
Not even my PCs were brave enough to try it. Later they found out that the ship had just disappeared into jumpspace and never returned.
 
Originally posted by The Oz:

It might:</font>
  • Do jump-46,656 (6^6)!!!!</font>
That last option. I hope the crew has lots of supplies available, it'll take a long time to get back to Charted Space from the gamma quadrant.
 
Originally posted by Horatius:
At the end of the tunnel is your destination,
Except that the exact exit point is not determined until exit.


Originally posted by Horatius:
The fusion power plant then burns sufficient fuel to generate energy which is channeled through the jump drive.
"Handwavium injections are at full, cap'n, she cannae take any more!"

Any fusion plant burning enough hydrogen as is required for J-1 on a 100 dTon vessel would produce enough heat to turn the whole vessel into a glowing cloud of rapidly dispersing gas (and hydrogen, because the power plant would never get through even a fraction of it before it cinderized itself).

Oh! Did I bring up the dreaded "heat" discussion, which has been known to generate threads a hundred emails or more on the TML, with half of them mathematics as multiple physicists duel it out with their varying calculations? Bad Chris! Bad, bad, bad!

"I recommend a new strategry, Chris, use more Handwavium!"


Originally posted by Horatius:
why couldn't the jump drive ne recharged and reactivated during the jump? It would be starting a new jump from within jumpspace. WHat would happen?
Boom! :(


Originally posted by Horatius:
As I see it, [...]

Does anyone have any thoughts on this?
Well, maybe. See my next post.
 
We have moved into a discussion of "rationalization" of one the least rational parts of the OTU. Jump Drives.

Therefore, I present to one and all, the great classic from the TML, by Graeme Batho.

This ran, mostly, under the thread title [TML] How Jump Works 201 (very long multi-part). However, a web search for this on Google only turns up parts 1, 2, and 6. When I originally compiled this for myself, over a year ago, I had to do extensive digging (read: I got help from TML members who already knew where they were), to find parts 3, 4, 5, and the supplement. There were serveral other posts on this thread which are not included, only the links to the main article itself.

Therefore, without further ado (for I know you have been asking for nothing else for an hour!):

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Supplement


Enjoy. :D
 
Brilliant article, thanks for posting the pieces Chris. It's now filed away safely on my hardrive.

Just one complaint, I hate things that end:
In the next part, I'll try to answer a variety of questions that still
remain about Jump.
To be continued...
and then never are :(
 
Many thanks, too, Chris


I'm just collecting every bit about jumpspace and different considerations about it. So this one was really fine....
So if anybody has additional thoughts, I would be glad about a link or a repost....
 
It is an interesting essay.
I have two questions, though.
If the jump grid is integral to the hull surface why don't jump drives take damage in HG on the surface damage table? You have to blow through the fuel tanks and actually use the internal explosion table to get a jump drive hit.

Re-circulating liquid anything as a coolant won't work in space. You can move the heat around and distribute it, but it won't remove it from the ship. It has to be radiated. It's like trying to cool your house by leaving the refrigerator door open. It would seem more likely that the LHyd is used directly as a coolant and vented off carrying the waste heat with it.

I'm not trying to take shots at someone not here to defend themselves. I'm hoping that these questions have been answered already and i just don't have access to (or simply missed) the answers.

edit: actually, two questions and an observation ;)
Capacitors (huge ones) are part of the jump drive. They can be used as sinks for black globe energy.
 
Originally posted by RainOfSteel:
</font><blockquote>quote:</font><hr />Originally posted by The Oz:

It might:</font>
  • Do jump-46,656 (6^6)!!!!</font>
That last option. I hope the crew has lots of supplies available, it'll take a long time to get back to Charted Space from the gamma quadrant. </font>[/QUOTE]As I said, when the ship did jump, she disappeared and was never seen again.

And I never told the PCs why, either....
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I would like to take the credit for the article itself, but I'll settle for all the thank yous for posting the links to it.

Everyone, you are all welcome. :D
 
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