Propellant Management Units

Integrated PMU assemblies with titanium tanks, latch valves, pressure regulators, and structural interfaces. 0.5 to 50 kg propellant capacity. Compatible with all ISPTech thruster families.

Spacecraft propellant management unit with titanium tanks and plumbing assembly
Technical Specifications

PMU Series Parameters

ParameterPMU-1 (Small)PMU-5 (Standard)PMU-50 (Large)
Propellant capacity0.5 – 2 kg2 – 10 kg10 – 50 kg
Tank materialTi-6Al-4V ELITi-6Al-4V ELITi-6Al-4V ELI
Operating pressure10 – 30 bar12 – 22 bar12 – 22 bar
MEOP45 bar35 bar30 bar
Latch valvePyro / solenoidSolenoidMotor-driven
Filter25 µm sintered Ti10 µm sintered Ti10 µm sintered Ti
Propellant compatibilityN₂H₄, MMH, GN₂N₂H₄, MMH, NTON₂H₄, MMH, NTO, Xe
Dry mass (typical)0.4 – 0.8 kg1.2 – 2.4 kg4 – 10 kg
Temperature (operating)-40 °C to +80 °C-40 °C to +80 °C-40 °C to +80 °C
Qualification standardECSS-E-ST-35CECSS-E-ST-35CECSS-E-ST-35C
System Architecture

Propellant Flow Schematic

PROPELLANT TANK PT PRESSURE REGULATOR LATCH VALVE FILTER THRUSTER → Ti-6Al-4V ±2% reg. Solenoid / pyro 10 µm Ti
Related Systems

Other Product Families

Chemical ThrustersElectric PropulsionCold Gas RCS

Request PMU Datasheet

Propellant loading procedures, interface control documents, and qualification data packages available on request.

Request DatasheetContact Engineering