T-Drive
Reactionless Motion Thrusters or "T-Drives" are an advanced type of Reactionless Drive which convert rotary motion into uni-directional motion through a series of mechanical linkages.
- This type of drive is a variant on drive types known variously as:
- Dean Drive (or more properly) a Dean Space Drive.
- Gyroscopic Inertial Thruster (GIT).
- It should not be confused with the Thruster Plate, which is another name for the Advanced "Reactionless" Gravito-Nuclear Thruster Plate, or TN-Drive, also known as the Deep Space Maneuver System.
Description (Specifications)[edit]
The T-Drive utilizes a motor to produce conventional rotational motion and convert that rotational motion (i.e. angular momentum) to uni-directional thrust (i.e. linear momentum) via a set of mechanical linkages. Outwardly, the mechanism appears to be essentially a large motor driving a flywheel connected to a set of pistons oriented in the three spatial dimensions, but the physics behind them is somewhat more complex than that, as is demonstrated by their Standard technological level. Practically speaking, power from an external power plant is directed to some or all of the pistons, creating unidirectional motion (i.e. linear momentum, or thrust). Thrusters do not utilize reaction mass and operate independent of the gravitational interaction; thus, they are not constrained by gravity-gradient based range limitations. Thrusters can hover within an externally applied force field, but they do not include integral inertial compensation, which must be supplied independently, such as by the installation of CG-Lifters.
Most observers of "reactionless" T-Drives fail to account for nearby gas or plasma pushed away by the drive mechanism, however. Thus, they are not properly reactionless drives.
History & Background (Dossier)[edit]
T-Drives are loosely based on the hypothetical Dean Drive of pre-spaceflight Terra. It is possible that Norman Dean may have accidentally stumbled upon the operating principle of the drive system without really understanding it or that he misidentified or misunderstood the operational principle. In some cases, Dean (or perhaps some of those trying to reproduce or follow his work) may have just accidentally reproduced the Thruster effect in certain configurations of his device without really having the science to understand the true principles behind the effect; hence, nobody in his day was able to successfully or consistently replicate the effect, and thus they were unable to reproduce its function with any consistency at the technological level and physics knowledge that was possessed at the time.
Library Data Referral Tree[edit]
Please refer to the following AAB Library Data for more information:
- NAFAL (STL) - (Not As Fast As Light) / (Slower Than Light)
- Light Speed (c)
- FTL - (Faster Than Light) - "Superluminal"
-
-
- (Field Propulsion Drives / Propellantless Drives)
- Z-Drive (Lifter / <1.0 D)
- G-Drive (Gravitic Drive / <10.0 D)
- M-Drive (Maneuver Drive/Thruster / <1000.0 D)
- N-Drive (NAFAL Drive / <1/8 ly)
- (Field Propulsion Drives / Propellantless Drives)
-
- N-Drive (NAFAL Drive / < 1/8 ly)
- Jump Space Drives
-
- J-Drive - Jump Drive (JD0: "0th" Order Jump Space Drive / > 100 D)
- H-Drive - Hop Drive (HD1: 1st Order Jump Space Drive / > 1000 D)
- S-Drive - Skip Drive (SD2: 2nd Order Jump Space Drive / > 10,000 D)
- L-Drive - Leap Drive (LD3: 3rd Order Jump Space Drive / > 100,000 D)
- B-Drive - Bound Drive (BD4: 4th Order Jump Space Drive / > 1,000,000 D)
- V-Drive - Vault Drive (VD5: 5th Order Jump Space Drive / > 10,000,000 D)
-
- D6-Drive - "Six Drive" (D6: 6th Order Jump Space Drive / > 100,000,000 D)
- D7-Drive - "Seven Drive" (D7: 7th Order Jump Space Drive / > 1,000,000,000 D)
- D8-Drive - "Eight Drive" (D8: 8th Order Jump Space Drive / > 10,000,000,000 D)
- D9-Drive - "Nine Drive" (D9: 9th Order Jump Space Drive / > 100,000,000,000 D)
-
- Conjectural Drives
-
- "Inertialess Drives":
- » Inertialess Drive ("IM -Drive")
- » Triplanetary Drive ("IT -Drive")
References & Contributors (Sources)[edit]
| This page uses content from Wikipedia. The original article was at Dean_drive. The list of authors can be seen in the page history. The text of Wikipedia is available under the Commons Attribution-ShareAlike 3.0 Unported License. |
| 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. |
- Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), 328,330-331.
- Marc Miller, Robert Eaglestone, Don McKinney. Starships (Far Future Enterprises, 2019), 55-56, 63, 76-79, 100-109.
- Adrian Tymes, Sabrina Tymes, Gabriel G. A. B. Fonseca, Robert Eaglestone. Starship Operator's Manual (Mongoose Publishing, 2024), 97.
- ArXiv.org Facets of Brachistochronic Trajectories
- Planetary Transfer Calculator
