DARUMA Micro Hybrid Propulsion Unit
Letara
Modular hybrid propulsion unit using solid HDPE fuel and N2O oxidizer for last-mile orbital maneuvers of small satellites — accelerates a 10kg payload to 1,100 m/s, 3D-printed manufacturing.
Technical specifications
- Wet mass
- 30 kg
- Performance (10kg payload)
- Accelerates to 1,100 m/s
- Performance (100kg payload)
- Accelerates to 400 m/s
- Performance (300kg payload)
- Accelerates to 130 m/s
- Fuel
- HDPE (high-density polyethylene)
- Oxidizer
- N2O (nitrous oxide)
- Hardware included
- Combustors, piping, tanks, simple CPU, batteries
- Manufacturing
- Scalable 3D-printing
- Status
- In development
About
DARUMA Micro is Letara’s hybrid propulsion unit, using solid HDPE (high-density polyethylene) fuel and N2O oxidizer, developed jointly with Hokkaido University’s Laboratory of Space Systems. It targets rideshare satellites that need to travel beyond their drop-off orbit, supporting orbit transfers, orbital adjustment via integrated cold-gas nozzles and a re-ignitable main engine, and deorbit for debris removal or sample return missions. The system is manufactured using scalable 3D-printing techniques and supplied as a complete hardware set including combustors, piping, tanks, a simple CPU, and batteries, with optional exterior wall panels and attitude control devices.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.