ARM-O (Aurora Resistojet Module for Orbit Control)
Aurora Propulsion Technologies
A modular water-propellant resistojet thruster module for satellite orbit control, ideal for collision avoidance and small orbital maneuvers on SmallSats, CubeSats and PicoSats.
Typed specifications26 values
Discloses 7 of 10 fields engineers filter by in this category (category median 3).
- Propulsion family
- water water resistojet · datasheet p.1
- Mass
- 1 kg wet mass, ARM-O GEN2 Medium · datasheet p.1 700 g wet mass, ARM-O GEN2 Small | 1 kg wet mass, ARM-O Medium | 700 g wet mass, ARM-O Small
- Thrust
- 20 mN BoL, ARM-O GEN2 Small and GEN2 Medium · datasheet p.1 3 mN BoL, ARM-O Small and ARM-O Medium
- Total impulse
- 250–300 N·s ARM-O GEN2 Medium · datasheet p.1 120–150 N·s ARM-O GEN2 Small | 200–250 N·s ARM-O Medium | 90–120 N·s ARM-O Small
- Propellant
- water datasheet p.1
- Data interface
- RS-422 digital control interface; alternatively direct electrical in… · datasheet p.1 CAN digital control interface; alternatively direct electrical in…
- Lead time
- 9–12 months ARM-O GEN2 Small / GEN2 Medium · datasheet p.1 4–9 months ARM-O Small / ARM-O Medium
- Thruster technology
- warm gas or resistojet resistojet utilizing water propellant · datasheet p.1
- Thrusters in the unit
- 2 datasheet p.1
- Volume
- 1 U ARM-O GEN2 Medium · datasheet p.1 0.6 U ARM-O GEN2 Small | 1 U ARM-O Medium | 0.6 U ARM-O Small
- Time to thrust
- 2 s response time, nominal mode · datasheet p.1 60 s preheat
- Satellite class
- CubeSat CubeSat propulsion system · datasheet p.1
- Thrust vector control
- none (fixed) Thruster heads adjusted toward centre-of-mass · datasheet p.1
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier5 lines, in the manufacturer's own wording
- Propellant
- Water
- Thrust-to-power ratio
- Ten times more thrust to power need compared to FEEP
- Specific impulse
- Double the specific impulse compared to cold gas
- Target platforms
- SmallSats, CubeSats and PicoSats
- Iod
- 2026
About
ARM-O (Aurora Resistojet Module for Orbit Control) is part of Aurora Propulsion Technologies’ ARM product family of water resistojet thrusters. The underlying resistojet thruster is designed primarily for water propellant but can support multiple propellant options, and weighs about a gram, allowing complex multi-thruster configurations even on CubeSats. ARM-O lets operators control their satellite using this modular resistojet system, and is described as ideal for collision avoidance and small orbital maneuvers. It is presented as an efficient and compact propulsion system providing reliable propulsion for precise control and extended mission capabilities, and is positioned as suitable for SmallSats, CubeSats and PicoSats. Stated advantages include ten times more thrust per unit of power compared to FEEP (Field Emission Electric Propulsion) systems, and double the specific impulse compared to cold gas propulsion, while being a safe and reliable propulsion option. As with other Aurora products, ARM-O is designed with modularity in mind, supporting both low-cost off-the-shelf configurations and extensively customized solutions, and is aimed at helping operators maximize fleet return-on-investment through orbit maintenance and failure-tolerant deorbiting while supporting sustainable use of space. An in-orbit demonstration (IOD) of ARM-O is planned for 2026.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.