Jump Drive/meta

Notes (2019)

Jump drive handwavium varies from version to version. IIRC Classic Traveller and Mega Traveller just require a lanthanum (or barium, but it's less efficient) jump grid in the hull of the ship that is charged with lots of energy to initiate the jump, which then proceeds unstoppably. Whether or not the jump drive still needs to be supplying any power to the jump grid during the jump is unspecified (but I always inferred not, otherwise you could do an emergency 'crash out' mid jump, albeit in the middle of interstellar nowhere). The energy is supplied from the jump fuel by the jump drive via the Zuchai crystals (which I always inferred to be a very highly efficient and specialised fusion plant and the capacitors of the gods respectively).

Mongoose Traveller is different - there at least part of the hydrogen jump fuel is used to physically create a jump bubble around the ship (my guess being that somebody somewhere did the maths on the energy flows for a CT jump drive and decided it would melt the jump drive, the engineering compartment, the engineers and most of the ship).

For the former case, where the energy comes from would seem to not be a critical part of the process - you could beam it in from outside, store it in the Zuchai crystals and use it with no problems (apart from coping with the rate of power flow, and being even more doomed than usual in the case of a misjump).

For the latter case - you'll still need whatever proportion of the jump fuel is needed to inflate your pocket universe jump bubble.

To clarify the above:

• Barium as an alternative to lanthanum for jump grids is in 'The Traveller Adventure'.
• Jump drives containing capacitors is from 'High Guard'.
• Zuchai crystals as the high efficiency capacitor of choice is from MegaTraveller 'Imperial Encyclopedia' IIRC.
- Matt Fitzgerald

- Maksim-Smelchak (talk) 13:51, 8 February 2019 (EST)

T5 TL Expanded Notation Correlation (2017)

Reminder to build out 1 to 33
- Maksim-Smelchak (talk) 07:27, 15 April 2017 (EDT)
Jumpspace & Conventional Space Travel by TL
Tech Period TL FTL-1 FTL-2 FTL-3 FTL-4 FTL-5 Min-TL Remarks
Ur-tech 6 Relativistic Drive RD-6 6 Only STL or NAFAL available.
• The first rockets make space travel possible.
Ur-tech 7 Relativistic Drive RD-7 6 Only STL or NAFAL available.
• Ion drives expand space travel.
Ur-tech 8 Relativistic Drive RD-8 6 Only STL or NAFAL available.
• Better hypergolics become available.
Ur-tech 9 Relativistic Drive RD-9 Prototype JD-1 9 FTL becomes available as a prototype.
Stell-tech 10-A JD-1 9 TBD
Stell-tech 11-B JD-2 11 TBD
Stell-tech 12-C JD-3 12 TBD
Stell-tech 13-D JD-4 13 TBD
Stell-tech 14-E JD-5 14 TBD
Stell-tech 15-F JD-6 15 TBD
Stell-tech 16-G JD-7 Prototype HD-1 16 The Prototype HD-1 brings an order of exponential advance to FTL travel.
Stell-tech 17-H JD-8 HD-1 17 TBD
Stell-tech 18-J JD-9 HD-2 Prototype SD-1 18 The Prototype SD-1 brings an order of exponential advance to FTL travel.
Ultra-tech 19-K HD-3 SD-1 19 Hop Drives entirely replace Jump Drives.
Ultra-tech 20-L HD-4 SD-2 20 TBD
Ultra-tech 21-M HD-5 SD-3 21 TBD
Ultra-tech 22-N HD-6 SD-4 22 TBD
Ultra-tech 23-O HD-7 SD-5 23 TBD
Ultra-tech 24-P HD-8 SD-6 24 TBD
Ultra-tech 25-Q HD-9 SD-7 Prototype BD-1 25 The Prototype BD-1 brings an order of exponential advance to FTL travel.
Ultra-tech 26-R SD-8 BD-1 26 Skip Drives entirely replace Hop Drives.
Ultra-tech 27-S SD-9 BD-2 27 TBD
Dei-Tech 28-T LD-1 BD-3 Prototype VD-1 28 The Prototype VD-1 brings an order of exponential advance to FTL travel.
Dei-Tech 29-U LD-2 BD-4 VD-1 29 TBD
Dei-Tech 30-V LD-3 BD-5 VD-2 Prototype 6D 30 The Prototype 6D-1 brings an order of exponential advance to FTL travel.
Omni-tech 31-X LD-4 BD-6 VD-3 6D Prototype 7D-1 31 The Prototype 7D-1 brings an order of exponential advance to FTL travel.
Omni-tech 32-Y LD-5 BD-7 VD-4 7D Prototype 8D 32 The Prototype 8D-1 brings an order of exponential advance to FTL travel.
Omni-tech 33-Z LD-6 BD-8 VD-5 8D Prototype 9D 33 The Prototype 9D-1 brings an order of exponential advance to FTL travel.

Acronym Key (2017)

STL-FTL Acronyms
Acronym Full Name Remarks
RD Relativistic Drive Conventional N-space travel.
JD Jump Drive Unconventional FTL J-Space travel.
HD Hop Drive Unconventional FTL H-Space travel.
SD Skip Drives Unconventional FTL S-Space travel.
LD Leap Drives Unconventional FTL L-Space travel.
BD Bound Drives Unconventional FTL B-Space travel.
VD Vault Drives Unconventional FTL V-Space travel.
6D Six Drives Exotic supra-FTL 6-Space travel.
7D Seven Drives Exotic supra-FTL 7-Space travel.
8D Eight Drives Exotic supra-FTL 8-Space travel.
9D Nine Drives Exotic supra-FTL 9-Space travel.

HIGHER ORDER JUMP DRIVES (2016)

While they are not currently known to Imperial Science as of the 1116 era, there are actually at least 9 tiers of "hyperspaces", or "Tau-spaces", of which Jumpspace is only the lowest tier. The actual values and performances are listed below.

Jumpspace & Conventional Space Travel in 1116
Minimum TL Space Level #s Weave (Order of Magnitude) Drive
Names
FTL Travel Duration Travel Distance Remarks
6 Real Space
(N-space)
0 None Conventional Drives
(Relativistic)
NAFAL Conventional Space-Time limitations. Unlimited
(Fuel limitation)
Pre-FTL or NAFAL Technologies.
• Fairly well understood.
9 Jump Space
(J-space)
1 to 9 0th-Order (100) Jump Drives

J-1 to J-9

FTL 168 hours [± 10%] 1-9 pc Drive rating are equal to the maximum travel distance in parsecs of travel.
• e.g. A J-1 drive can travel one parsec, or about 3.261 light-years or 206,265 Astronomical units.
• 100 diameter gravity well limitation.
• Not well understood.
17 Hop Space
(H-space)
10 to 18 1st-Order (101) Hop Drives

H-1 to H-9

FTL 168 hours [± 10%] 10-90 pc Drive rating are equal to the maximum travel distance in 10s of pc of travel.
20 Skip Space
(S-space)
19 to 27 2nd-Order (102) Skip Drives

S-1 to S-9

FTL 168 hours [± 10%] 100-900 pc Drive rating are equal to the maximum travel distance in 100s of pc of travel.
22 Leap Space
(L-space)
28 to 36 3rd-Order (103) Leap Drives

L-1 to L-9

FTL 168 hours [± 10%] 1000 pc
to
9000 pc
Drive rating are equal to the maximum travel distance in 1000s of pc of travel.
26 Bound Space
(B-space)
37 to 45 4th-Order (104) Bound Drives

B-1 to B-9

FTL 168 hours [± 10%] 10,000 pc
to
90,000 pc
Drive rating are equal to the maximum travel distance in 10,000s of pc of travel.
29 Vault Space
(V-space)
46 to 54 5th-Order (105) Vault Drives

V-1 to V-9

FTL 168 hours [± 10%] 100,000 pc
to
900,000 pc
Drive rating are equal to the maximum travel distance in 100,000s of pc of travel.
31 "6-space" 55 to 63 6th-Order (106) Six Drives

"Six"-1 to "Six"-9 (?)

FTL 168 hours [± 10%] 1 million pc
to
9 million pc
Drive rating are equal to the maximum travel distance in millions of pc of travel.
32 "7-space" 64 to 72 7th-Order (107) Seven Drives

"Seven"-1 to "Seven"-9 (?)

FTL 168 hours [± 10%] 10 million pc
to
90 million pc
Drive rating are equal to the maximum travel distance in 10s of millions of pc of travel.
* Generally not available.
33 "8-space" 73 to 81 8th-Order (108) Eight Drives

"Eight"-1 to "Eight"-9 (?)

FTL 168 hours [± 10%] 100 million pc
to
900 million pc
Drive rating are equal to the maximum travel distance in 100s of millions of pc of travel.
* Generally not available. - Note that Singularity occurs at TL33, so only an "Early" Eight-Drive is possible at TL32.
34 "9-space" 82 to 90 9th-Order (109) Nine Drives

"Nine"-1 to "Nine"-9 (?)

FTL 168 hours [± 10%] 1 billion pc
to
9 billion pc
Drive rating are equal to the maximum travel distance in billions of pc of travel.
* Generally not available. - Note that Singularity occurs at TL33, so only a "Prototype" Nine-Drive is possible at TL32.

EXOTIC DRIVES (2016)

Other EXOTIC DRIVES available in the OTU (presumably at very high TL) that are generally not available (and TL is not known):

1. Inertialess Drive
2. Alcubierre Drive (at Trav RPG Wiki)
3. Alcubierre Drive (at Wiki)
4. Reality Drive

Also see article: Jumpspace

Notes (2007)

The Jump Drive is the device that allows faster-than-light travel for starships in the Traveller universe.

• Lanthanum is not very uncommon on present day earth, priced at around \$360/Kg.