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Newsletter
Week in Space Data, every Friday.
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Propulsion Systems Database
Comprehensive reference of space propulsion technologies -- engines, thrusters, and experimental systems powering humanity's expansion into space.
28
Total Systems
22
Operational
5
Propulsion Types
20
Manufacturers
28 of 28 systems
Thrust:1 N
Operational
Thrust:733 kN
In Development
Thrust:2,447 kN
Operational
Thrust:320 mN
Isp:2,029 s
In Development
Cancelled
Thrust:350 µN
Isp:2,500 s
Operational
Thrust:2,061 kN
Operational
Thrust:1.42 N
Isp:231 s
Operational
Thrust:845 kN
Operational
Thrust:981 kN
Operational
Thrust:235 mN
Isp:4,160 s
Operational
Thrust:3,500 kN
Operational
Operational
Thrust:980 kN
In Development
Thrust:2,452 kN
Isp:350 s
In Development
Thrust:4,148 kN
Isp:339 s
Operational
Thrust:107 kN
Operational
Thrust:2,279 kN
Isp:452 s
Operational
Thrust:25.8 kN
Isp:343 s
Operational
Thrust:16,014 kN
Operational
Thrust:290 mN
Isp:1,750 s
Operational
Thrust:68.6 kN
Isp:292 s
Operational
Thrust:170 mN
Operational
Thrust:145 mN
Operational
Thrust:180 kN
Operational
Thrust:1,371 kN
Operational
Thrust:5.4 N
Isp:2,650 s
In Development
Thrust:165 mN
Isp:3,500 s
Operational
Propulsion Type Overview
Chemical Liquid
High thrust, moderate Isp. Turbopump-fed liquid propellants. Workhorse of orbital launch.
Chemical Solid
Very high thrust, lower Isp. Simple and reliable. Boosters and kick stages.
Electric
Very low thrust, very high Isp. Ion and Hall thrusters for long-duration in-space propulsion.
Green
Non-toxic alternatives to hydrazine. Lower handling costs, reduced launch-site hazards.
Nuclear
Fission-heated propellant or reactor power. Highest theoretical Isp for high-thrust applications.
Figures checked on 2026-10-11 against the manufacturer, agency and press sources listed on each entry. A blank field means no source we could open states that figure. Specifications vary by configuration and operating point.