SmallSat Propulsion Thruster - 20N

Utilising nitrous oxide and propene propellants in a self-pressurising configuration, Dawn's 20N propulsion system has increased capabilities compared to hydrazine, ADN or HAN-based systems. No PMD requirements or other complexities mean simple feed and tank designs.

Self-pressurising propellants mean one system for both in-orbit and re-entry operations. Stable pressure and mass flow rates give a constant Isp of >285 s - throughout life. Unlike other green propellant thrusters that can take up to 30seconds to fire, Dawn's 20N requires no preheating of catalysts and is cold-start capable. Designed for both steady state and tiny pulse operations, the rapid cold-start capable boasts a minimum impulse bit of <1 N.s, allowing for the finest of manoeuvres.

Dawn can provide systems to suit any satellite. From thrusters only, through to complete tank, feed and health monitoring systems. We can scale up or scale down to suit your needs. REACH compliant and ITAR free, Dawn's 20N thruster is able to launch with all global launch services.

Lead Time:
6 months
Nominal Thrust:
Specific Impulse:
>285 s
Minimum Impulse Bit:
<1 N.s
Operational Temperature:
-5°C to 35°C
Dry Mass:
400 g at Single Seat; 560 g at Dual Seat
Cold start capable. No preheating catalysts
Self-pressurising propellants
Nominal Power Consumption:
12 W
Propellant Type:
Nitrous oxide (N2O) and propene (C3H6)
ITAR free and REACH compliant
No propellant degradation over time
Minimum Impulse Bit:
<400 mN.s cold gas N2O
Minimum Impulse Bit:
<50 mN.S cold gas C3H6
Qualified Accumulated Burn Life:
93,000 N.s
Maximum Impulse Bit:
150 N.s
Max Operating Frequency:
4 Hz