Pale Blue

Next Generation Spacecraft Propulsion

Powering space mobility with water - the ultimate green propellant

The Company

Founded in 2020 by propulsion specialists at the University of Tokyo, Pale Blue seeks to disrupt the space propulsion industry by using water propellant to offer the world's safest high performance spacecraft thruster.
Powered by its patented miniturized ECR technology, Pale Blue thrusters are able to fully capitalize all of the ''green'' benenfits of water while still achieving unprecedented levels of high performance.

The Team

Pale Blue Inc. was founded by four members who have been engaged in basic research on propulsion machines, and the development and operation of the satellite-mounted actual machine together for more than 7 years.
Pale Blue Inc. is striving every day to realize sustainable space development and utilization centering on the technology of ultra-small propulsion system with water as the propellant.
The next page is the introduction of team members.

Products

Pale Blue's water-based thrusters are currently available for small satellites.

PBR-10
Optimal for 3U-6U cubesats
0.5U envelope
Nominal thrust at 6W
PBR-20
Optimal for 6U-8U cubesats
1U envelope
Nominal thrust at 20W
PBR-50
Optimal for 100-200kg microsats
Dia. 250mm x 300mm envelope
10mN thrust at 50W
PBI
Optimal for nanosats and microsats
1U+ envelope
Up to 7,000Ns total impulse
Water Hall-effect Thruster
Optimal for up to 700kg smallsats
Flexible envelope
Up to 10mN thrust

Flight Heritage

2014

Hodoyoshi-4 Satellite

Xe ion thruster

Partners

Procyon Probe

Hybrid Xe ion and cold-gas jet thruster

Partners

2019
2022
October

AQT-D Satelite

Resistojet

Partners

RAISE-3 Satellite

KIR Hybrid Thruster

Partners

View More
2022
November

EQUULEUS Probe

Resistojet

Partners

OPTIMAL-1 Satellite

Resistojet

Partners

2023
January

EYE Satellite by STAR SPHERE

Resistojet

Partners

PBI

Ion Thruster
2025

RAISE-4 Satellite

KIR-X – Ion/Resistojet Thruster

Partners

2027

Water Hall-effect Thruster

Hall-effect Thruster