CubeSat Propulsion Technologist

The technologist fabricates micro electro mechanical MEMS propellant distribution channels, miniature solenoid micro valves, and electrically heated resistojet expansion nozzles that heat propellant gases like water vapor, nitrogen, or benign fluorochemicals to thousands of degrees before supersonic nozzle expansion. Conforming to standards established by the CubeSat Design Specification and AIAA standards, the specialist integrates high pressure propellant micro tanks, thermal heaters, and solid state driver electronics within fractional one unit or two unit CubeSat volume allocations. They measure micro Newton to milli Newton thrust forces using precision torsional pendulum thrust stands in high vacuum chambers simulating deep space conditions.

While fluid dynamic CFD micro nozzle simulations and thermodynamic models predict theoretical specific impulse and thrust efficiency, assembling micro propulsion hardware involves micro scale mechanical challenges. Microscopic particulate contamination can jam micro valve seats causing unrecoverable propellant venting in space, while thermal leakage from resistojet heating elements can overheat adjacent satellite electronics. The technologist performs helium leak checks down to ten to the minus nine mbar liters per second, calibrates thermocouple telemetry, tunes propellant pulse width modulation PWM firing sequences, and oversees thermal vacuum bakeout qualification.

The day starts at seven forty five in the morning inside the propulsion integration cleanroom. The technologist prepares to assemble a compact zero point five unit cold gas micro resistojet propulsion module designed for a three unit Earth observation CubeSat. The unit features a titanium additive manufactured propellant tank rated for thirty bar, an integrated micro heater block, and four canted micro nozzles designed to provide three axis attitude detumbling and orbit raising. Working under a laminar flow hood with an optical stereomicroscope, the technologist installs miniature solenoid micro valves onto the titanium manifold. Using a micro torque driver, they

tighten the mounting fasteners to exact inch ounce tolerances, taking care not to pinch the miniature elastomeric seals. They connect the tank fill port to a helium mass spectrometer leak detector, pressurizing the assembly to forty five bar in a proof pressure blast chamber. The leak detector registers less than one times ten to the minus nine mbar liters per second, verifying hermetic sealing that will hold propellant over a three year mission life. In the afternoon, the technologist mounts the assembled thruster module onto a torsional pendulum micro thrust.

A CubeSat Propulsion and Micro Resistojet Thruster Technologist designs, assembles, integrates, and tests miniaturized low thrust propulsion systems, micro resistojets, pulsed plasma thrusters, and cold gas micro thrusters that provide orbit raising, constellation phasing, and collision avoidance capabilities for miniature CubeSats and SmallSats. Operating inside cleanrooms, aerospace vacuum testing chambers, and propulsion testing laboratories, the technologist overcomes the extreme mass, volume, and power constraints of standardized CubeSat form factors.

Core responsibilities include assemble, wire, and test miniaturized micro resistojet and cold gas propulsion modules for cubesats., operational coordination, and ensuring strict adherence to Kenyan statutory frameworks and quality standards.

Key organizations hiring for this role include Kenya Space Agency KSA, Regional Centre for Mapping of Resources for Development RCMRD, Kenya Civil Aviation Authority KCAA, Safaricom Telecommunications Satellite Ground Stations, alongside expanding opportunities in Nairobi, Mombasa, Kisumu, and regional infrastructure projects.

CubeSat Propulsion Technologist Specialist, Senior CubeSat Propulsion Technologist, CubeSat Propulsion Technologist Lead, CubeSat Propulsion Technologist Consultant

While fluid dynamic CFD micro nozzle simulations and thermodynamic models predict theoretical specific impulse and thrust efficiency, assembling micro propulsion hardware involves micro scale mechanical challenges. Microscopic particulate contamination can jam micro valve seats causing unrecoverable propellant venting in space, while thermal leakage from resistojet heating elements can overheat adjacent satellite electronics. The technologist performs helium leak checks down to ten to the minus nine mbar liters per second, calibrates thermocouple telemetry, tunes propellant pulse width modulation PWM firing sequences, and oversees thermal vacuum bakeout qualification. Employment opportunities concentrate across major industrial, commercial, and financial hubs including Nairobi, Mombasa, Kisumu, Nakuru, and Eldoret, alongside specialized regional project sites.