Referral-Tree-Impulse-Drives

• Spacecraft Drives (Interplanetary Drives)

• Reaction Drives:

• Reaction Rockets:

• R-Drive (Rocket Drive)
• O-Drive (Orion Drive)
• P_H-Drive (HEPlaR Drive)

• Impulse Drives:

(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)

• Reactionless Drives:

• T-Drive (Reactionless Motion Thruster):

• Gyroscopic Inertial Thruster (GIT)
• Dean Space-Thruster Drive

• T_N-Drive (Reactionless Field Thruster: Advanced Gravito-Nuclear Impulse Thruster)

• Deep Space Maneuver System - ("Reactionless")