Diesel Locomotive
A Diesel Locomotive is used for mass transit of passengers and/or cargo.
- It is a type of civilian vehicle, a train, and a groundcraft.
- It operates on train networks.
- It is an element of infrastructure.
Description (Specifications)
Large low-speed internal combustion engines (as used in locomotives and maritime vessels, where overall engine weight is relatively unimportant) can reach high effective efficiencies. As such they remain an important element of infrastructure throughout the TL:4-6 epoch.
- Suitable hydrocarbon fuels with the correct volatility and makeup are typically obtained from refined fossil sources or extracted from planetary atmospheres and surfaces. They are widely available and relatively cheap.
Diesel locomotives are actually better described as diesel-electric. The internal combustion engine doesn't drive the wheels directly, instead powering an electric generator. This in turn powers electric motors, capable of rapidly generating very high levels of torque, that are connected to the wheels.
Diesel locomotives typically operate on railroad networks.
Image Repository
A large, heavy Terran-style diesel locomotive, used to haul passengers and freight. 
Because of their power and efficiency, diesel locomotives are used to efficiently move passengers and large quantities of cargo between widely separated locations. Long freight trains, headed by one or more diesel locomotives and hauling hundreds or even thousands of tons of cargo, remain a common sight across the Imperium.
History & Background (Dossier)
Diesel is something of a misnomer: it refers to any variety of large internal combustion engine that utilizes a heavy hydrocarbon fuel and gives a good range per unit of fuel.
- The use of the term diesel specifically dates to the Second Imperium, where it was shorthand for almost any non-steam, non-electric internal combustion locomotive. The term remains common within the Imperium and the Solomani Sphere.
Expected Train Development Sequence
MACRO LEVEL: TL:1-9:
- Network Type: Land Train → Railroad Train → Monorail Train → Funicular Train → Subway Train → Atmospheric Train → Hover Train → Maglev Train → Sky Train
- Motive Power: Steam Locomotive → Cog Locomotive → Light Rail Locomotive → Internal Combustion Locomotive → Diesel Locomotive → Electric Locomotive → High Speed Locomotive
MACRO LEVEL: TL:10-18
References & Contributors (Sources)
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- Traveller Wiki Editorial Team
- Author & Contributor: Lord (Marquis) and Master Scout Emeritus Adie Alegoric Stewart of the IISS
- Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science