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Japan Aerospace Exploration Agency

Unmanned Airplane for Radiation Monitoring System (UARMS)

Next Generation Aeronautical Innovation Hub Center

Since June 2012, JAXA, in cooperation with the Japan Atomic Energy Agency (JAEA), has been conducting research and development on a small Unmanned Aerial Radiation Monitoring System (UARMS).

JAXA's research focuses on:

JAEA's research focuses on:

The research is being conducted to be used for radiation-monitoring missions in the restricted area of Fukushima in the near future.


Conceptual diagram of radiation monitoring


UARMS Specification (Improved version)
Dimensions Length: 2.7 m, wingspan: 4.2 m
Max. takeoff weight / Payload 50 kg / 3 to 10 kg
Power plant Engine (gasoline)
Endurance 6 hours (daytime)
Airspeed 25 to 35 m/s (90 to 126 km/h)
Takeoff and landing distance 200 to 300 m
Cruise Altitude below 250m, to fly below minimum safety altitude of civil aircraft
Control Programmed flight (including terrain-following mode)
Manual take-off and landing