PRODUCT MODEL

Propulsion for
Small Satellites

DARUMA is a lineup of propulsion units for small satellite and spacecraft, based on technology developed under joint research with Hokkaido University, and planned for space demonstrations 2024. The propulsion units are being developed to accommodate the needs of a wide range of satellite and spacecraft sizes, from satellites that fit in the palm of your hand, to spacecraft that are large enough to transport human passengers. The propulsion system, which incorporates innovative patented technology developed through years of research by Hokkaido University and Letara, will be provided as a package with fuel included. You can follow recent events related to research and development development on the R&D Column page and Letara's SNS.

OVERVIEW

Escaping
Earth Orbit

Using DARUMA Micro (30 kg wet mass):
- Capable of accelerating a 10 kg payload to 1,100 m/s

- Capable of accelerating a 100 kg payload to 400 m/s

- Capable of accelerating a 300 kg payload to 130 m/s

Orbital
Injection

- Capable of orbit transfers from Geostationary Transfer Orbit (GTO) to Near Rectilinear Halo Orbit (NRHO)

Orbital
Adjustment

Deorbit

Integrated cold-gas nozzles, and main-engine re-ignition technologies enable rapid and precise orbital adjustments as necessary

Deliberately lower the satellite into Earth's atmosphere,
for debris removal, or sample return etc.

SPECIFICATION

Fuel

HDPE（High-density polyethylene）

Oxidizer

N2O（Nitrous Oxide）

Hardware

Combustors, Piping, Tanks, Simple CPU, Batteries

Option

Exterior wall panels, Attitude control devices

Scalable design and manufacturing due to 3D printer

Increasing storage density and minimizing safety control during oxidizer filling

will be provided as hardware set

D A R U M A - M i c r o D e t a i l s

DARUMA-Mic : Actual ground test model

DARUMA SERIES

Mini

100 x 100 x 100 cm

2 0 0 ～ 6 0 0 k g

For earth orbiting satellite constellation
Deorbit

Micro

50 x 50 x 50 cm

1 0 ～ 2 0 0 k g

Orbit Injection (also deep space orbit)
Deorbit

Nano

10 x 10 x 10 cm

1 ～ 1 0 k g

For CubeSat (for universities and companies)
Deorbit

SIZE

MASS

USE

PRODUCT MODEL

Propulsion for Small Satellites