Green Propulsion System

VACCO’s Green mono-propellant Micro Propulsion System (MiPS) provides a highly reliable solution for a fully self-contained CubeSat attitude control and main propulsion system.

The VACCO Green MiPS is approximately 3U in volume and uses four 100 mN thrusters to develop 3,320 N-sec of total impulse that provides 237 m/s of delta-V for a 14 kg CubeSat. Each thruster independently operates to perform both delta-V and ACS maneuvers controlled by an integrated microprocessor controller.

Flight systems currently in production.


  • Integral titanium fluid control manifold and low friction, space grade valves
  • All welded tank construction contains 2 kg of propellant
  • Integrated microcontroller and RS-422 interface enable high-level commands from the host spacecraft
  • Low power with < 1 Watt for health and status monitoring
  • Easily configured for different mono-propellants
    • ADN green (LMP-103S/LT)
    • Air Force green (AF-M315E)
  • Performance density: 969 N-sec/L

pdf-iconGreen Propulsion System Datasheet

Operating Parameters

Propellant MDP 5.17 Bar (75 psia)
Propellant Proof Pressure 7.76 Bar (150 psia)
Propellant Burst Pressure 2.18 Bar (300 psia)
GHe MDP 29.1 Bar (422 psia)
GHe Proof Pressure 43.66 Bar (633 psia)
GHe Burst Pressure 58.21 Bar (844 psia)
Internal Leakage 1.0 x 10-4 sccs GHe
External Leakage 1.0 x10-6 sccs GHe
Operating Temp 10°C to 40°C
Non-Operating Temp -34°C to 60°C
Total Impulse @10°C 3,320 N-s
Dry Mass 3.0 kg Max
Wet Mass 95% Fill @ 10°C 5.0 kg Max
Operating Voltage For Telemetry 5±0.25 VDC
Operating Voltage For Heaters & Valves 9.5-12.6 VDC
Standby Power 10 W Max
Warmup Power 1W
Thruster Operating Power (4 thrusters) 15 W Max
Data Interface RS-422
Performance characteristics are based on customer requirements. As such, they are not representative of component capabilities or limitations.

Envelope Drawing

Green Propulsion System_envelopedrawing-1024x689


Flow Schematic
Green Propulsion MiPS flow Schematic_web2