Improbable Drive

An Improbable Drive is a rumored type of extremely advanced interstellar drive system. Its theoretical validity and possible historical existence among certain precursor species is a matter of debate among scholars, but other than relying somehow upon worldline quantum superposition, its principle of operation remains obscure.

---

---

Library Data Referral Tree

Please refer to the following AAB Library Data for more information:

Starships:

---

---

Speed-of-Travel

• Speed of Travel

• NAFAL (STL) - (Not As Fast As Light) / (Slower Than Light)
• Light Speed (c)
• FTL - (Faster Than Light) - "Superluminal"

• Astronomical Unit (AU)

» Imperial Standard Astronomical Unit

• Light-second (ls)
• Light-minute (lm)
• Light-hour (lh)
• Light-day (ld)
• Light-week (lw)
• Light-year (ly)
• Parsec (pc)

» Solomani Parsec

» Vilani Parsec ("Deshi")

» Imperial Standard Parsec

---

Impulse-Drives

• Spacecraft Drives (Interplanetary Drives)

• Reaction Drives:

• Reaction Rockets:

• R-Drive (Rocket Drive)
• O-Drive (Orion Drive)
• H/P-Drive (HEPlaR Drive)

• Impulse Drives:

(Field Drives / Propellantless Drives)

• Z-Drive (Lifter / <1.0 D)
• G-Drive (Gravity Drive / <10.0 D)
• M-Drive (Maneuver Drive or Thruster Plate / <1000.0 D)
• N-Drive (NAFAL Drive / <¹/₈ ly)

• Reactionless Drives:

• T-Drive (Reactionless Thruster: Gyroscopic Inertial Thruster (GIT) or Dean Space-Thruster Drive)

---

Jump-Space-Drives

Jump Drive (J-Drive />100 D)

Background & History:

• Jump Drive History
• Jump Space

Components & Key Resources:

• Jump Governor
• Lanthanum
• Zuchai Crystal

Lore:

• Microjump
• Misjump
• Time In Jump

• Jump Dimming
• Jump Flash
• Jump Shadow

• Jump Bridge
• Jump Damper
• Jump Projector

---

Interstellar-Drives (Advanced)

• Starship Drives (Interstellar Drives)

• N-Drive (NAFAL Drive / < ¹/₈ ly)
• Jump Space Drives

• Jump Space
• Jump Drive History

• Jump Governor
• Nexus Linkage Device
• Nth Order Jump Space Drives

• J-Drive - Jump Drive ("0th" Order Jump Space Drive / > 100 D)
• H-Drive - Hop Drive (1st Order Jump Space Drive / > 1000 D)
• S-Drive - Skip Drive (2nd Order Jump Space Drive / > 10,000 D)
• L-Drive - Leap Drive (3rd Order Jump Space Drive / > 100,000 D)
• B-Drive - Bound Drive (4th Order Jump Space Drive / > 1,000,000 D)
• V-Drive - Vault Drive (5th Order Jump Space Drive / > 10,000,000 D)

• 6-Drive - Six Drive (6th Order Jump Space Drive / > 100,000,000 D)
• 7-Drive - Seven Drive (7th Order Jump Space Drive / > 1,000,000,000 D)
• 8-Drive - Eight Drive (8th Order Jump Space Drive / > 10,000,000,000 D)
• 9-Drive - Nine Drive (9th Order Jump Space Drive / > 100,000,000,000 D)

• Hieronymous Device ("Jump Potentiator" / "Jump Exponentiator")

• Conjectural Drives

• "Inertialess Drives":

» Inertialess Drive ("I_M -Drive")

» Triplanetary Drive ("I_T -Drive")

• Improbable Drive
• Hieronymous Drive
• Alcubierre Drive ("Albuquerque Drive")
• Reality Drive

• Alternative Interstellar Drive Technologies

• Alternative FTL Drive

» Hyperspace Drive

» Keyhole Drive

» Singularity Drive

» Space Folding Drive

» Stutterdrive

» Teleport Drive

» Warp Drive

---

---

References

This article is a stub or placeholder. Please expand this article to include further basic detail: who, what, where, etc. You can help the Traveller Wiki by expanding it.

This article is missing content for one or more detailed sections. Additional details are required to complete the article. You can help the Traveller Wiki by expanding it.

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• Marc Miller, Robert Eaglestone, Don McKinney. Starships (Far Future Enterprises, 2019), .