Capacitors vs. Hydrogen Dump in Ship Design

Offhand sounds like the HG SRD Alternative Drive: Hyperspace Drive. opens a portal (big amount energy to initiate), uses no additional fuel (meaning none ya?) The description sounds crazy fast, I'd use maybe a different speed um @1G for 1 week one parsec what 4.2 light year per G say makes a 1G J1 take a week. Maybe some other effects, Drive engine size is only twice a J drive size, but rated by ship size (only!), would be a lot fewer capacitators (drive size), but could be tweaked. The tie to jump speed to maneuver drive could just be dodged (you take the vector in only).

Does the one you describe require the power plant to operate at (whatever) rated capacity for the trip in jump (as Jump Drive does)? how to put it, is faster necessarily further? J1 @ 1 week, J6 @ 1 week, J6 @ 6 weeks type of thing. How do they exit, it is set when they enter or do they just turn the drive off, or what?

Heck Warp drive might work as well for that matter, some (double power plant fuel use rate is all), has the variable speed/distance thing, more "drivey", has no maximum range.

I'd imagine either of those would work, both sound better than calling it a jump drive. I guess I mean there are two alternatives one using no fuel set drive capacity size for the jump drive, speed based on maneuver rating (hyperspace), the other keeping similar speed/distance with no G tie, uses (VERY) moderately more fuel to run.

Add in the Tport where it's instantaneous (maybe it isn't!) consumes no extra fuel (does that mean no jump fuel or no more beyond normal jump fuel gah) but jumping is a strain on ships system (the Grav well stuff).

I like the idea you've presented and sure it can work, personally I'd call it for discussion purposes something different, in campaign sure they call it jump drive, but it'll just cause mass confusion and unneccesary exception explanation things (see it's a jump drive only __ __ __) versus it's a modified alternate hyperspace drive. works like this. I hear traveller jump drive, i think what it is, how it's been bubbles or no. To veer far from that why bother trying to redifine it take it as your own invention give it a created owner name, the GAT+ Jumpie drive! and run with it.

Great the ramifications of how it affects things in your description, especially the deep-space/rift issues. (Hey Scotty, how big a rock we gotta jump to deep space to be able to come back?) wonder if/how misjumps work with this thing. Are there um, drop capacitators like drop tanks? also tons (tons!) of capacitators sound verrry expensive vis some liquid H2 sloshing about.

... (thinking: always dangerous!) what about jump drive (or hyper, warp) requires power from chemical battery power (i.e. capacitators) for jump drive to work? the 1000hr vis 1 hr sounds harsh to me personally (wah! i want a battery powered jump! for Annic Nova of course!!!) but dodged easily, it's not maneuver, just maintaining the bubble or whatever. P2Achembatt for 100t 4t, 32MCr (!) 10t (for J1 as capacitators instead of fuel) is um P6Cchembatt (@128MCr) or um, 2500/2.5hr P2chembatt (@80MCr), (and there *is* no J1 100t so um grrr) double it i guess?
 
Maccat said:
Offhand sounds like the HG SRD Alternative Drive: Hyperspace Drive. opens a portal (big amount energy to initiate), uses no additional fuel (meaning none ya?) The description sounds crazy fast, I'd use maybe a different speed um @1G for 1 week one parsec what 4.2 light year per G say makes a 1G J1 take a week. Maybe some other effects, Drive engine size is only twice a J drive size, but rated by ship size (only!), would be a lot fewer capacitators (drive size), but could be tweaked. The tie to jump speed to maneuver drive could just be dodged (you take the vector in only).

Yeah, but in general the point of the exercise is to be able to use OTU ship designs pretty much as is, but use energy storage in the form of some kind of capacitor/battery system, rather then hydrogen tanks, to support jumping. Or at least that's what my point was, obviously your mileage may vary.

Otherwise, jump drives and jump space would work as in stock. Also, in the setting, it's the only way to jump, the normal OTU method isn't in the cards. So calling it jump drive works just fine, as its what people are used to.
 
So make the jump drive bigger (to include those capacitors) by exactly the amount of the jump fuel.

Then use the PP to power a jump.

Designs work perfectly, you just erase "fuel" and replace with "Jump Drive".
 
Rikki Tikki Traveller said:
So make the jump drive bigger (to include those capacitors) by exactly the amount of the jump fuel.

Then use the PP to power a jump.

Designs work perfectly, you just erase "fuel" and replace with "Jump Drive".

Actually, Rikki, its far simpler. I simply erase jump fuel, and write in capacitors. The only fiddly bit is remembering that a small bit of the fuel is for the manuever drives/power plant.
 
lastbesthope said:
...The other way would be to transmit the energy, i.e. channel it into a broadcast of some sort and get rid of the energy that way.

Interstellar SPAM! :shock:
 
DCAnsell said:
That's an interesting thought. You couldn't just make such a tremendous amount of energy disappear...the only way to actually dump the charge in the capacitors would be to run it through the jump engines and the jump grid. Which, assuming you could do it without frying something, or actually jumping, would probably be quite a spectacular event.

Just have a flywheel mounted on magnetic bearings with one end of the shaft passing through an electromagnetic coil. Want to dump the capacitors? Just switch the electromagnet on and spin up the flywheel. As long as the flywheel is heavy it will require a lot of power to get up to high speed and since mass doesn't really affect the ship designs much the extra weight shouldn't matter.

Now most of your stored energy is mechanical instead of electrical and by switching the electromagnet into "reverse" you could use the flywheel to charge the capacitors back up. Each time you went from electrical to mechanical or back you'd lose a portion to heat which would need to be radiated away using, well radiators :)


The primary drawback in one of maneuvering, since what you have constructed is like a big gyroscope and it will tend to strongly resist any changes to 2 of the 3 ship axes because of its angular momentum. In game terms you'd keep flying straight until you could slow down the gyro by turning its energy into heat through braking or back into electricity which removes all the angular momentum.
 
Strangelove said:
Just have a flywheel mounted on magnetic bearings ...
Contemplated such a while back (not for Traveller) - using exotic materials so the flywheels wouldn't fly apart and superconductors for efficiency - with wheel dynamos mounted in rotatable assemblies so that they could be turned to advantage while maneuvering...

'White Globe' defense shields might be developed as a side shoot.
 
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