Image of Stellar Exploration - Monopropellant Propulsion System on the satsearch marketplace

Key highlights

Our monopropellant propulsion system delivers a specific impulse greater than 200 seconds and is available in scalable thruster configurations. The pump-fed design achieves an efficient propellant mass fraction of approximately 70% while maintaining compatibility with CubeSat and ESPA-class spacecraft. The system is proven in orbit, offering demonstrated flight heritage, high reliability, and efficient packaging.

Key features

Propellant: Hydrazine (HPH)
Thrust Options: 0.25 N / 0.5 N / 1 N
Steady-State Isp: 200 s (measured 208–217 s)
Pulsed Isp: 175 s

Example System (ESPA-Class)

Integrated Axial and RCS Propulsion System
4 × 0.5 N thrusters, 4 x 0.25 N thrusters
Wet mass: ~ 4.3 kg
Total Impulse: ~ 3.1 KNs
Delivery timeline: < 1 year

Example System (12U Cubesat)

Integrated Axial and RCS Propulsion System 8 × 1 N thrusters
Dry mass: < 20 kg
Dry / Wet mass: ~20 kg / 90 kg
Delivery timeline: < 1 year

Flight heritage

The Stellar Exploration monopropellant system has supported multiple missions, including:

CAPSTONE (NASA)
EG-3
Jackal 1–4

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Last updated: 2026-01-19

Stellar Exploration