List of Propulsion Systems
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Moon launched
- Chemical Propellants
(see In Situ Propellant Production) - Eddy Current Brake to Orbit
- Electromagnetic Railgun
- Hydrogen Gas Gun
- Lunar Electrothermal Oxygen Rocket
- Lunar Rocket-sled to Orbit
- Mass Driver
- Maglev launcher -- a la Gerard O'Neill and/or Heinlein
- Ring launch or line launch
- Tether
- Wheel rolling at orbital speed
Earth launched
- ATO, Airship To Orbit as per JP Aerospace
- Conventional Chemical -- (links to Astronautix might be useful here)
- Inverted-aerobraking
- Momentum from GTO
- Orion (CEV)
- PDE, Pulse Detonation Engine
- Rockoon 'Rockets launched from balloons'
- SCRAMJet
- Space Elevator
Interplanetary Transfer
- Conventional Chemical -- (links to Astronautix might be useful here)
- Harenobraking
- Ion propulsion
- Inverted-aerobraking
- Momentum from GTO
- Nuclear -- Orion.
- Solar sail
- Tether
- VASIMR
- VASIMR lunar tug