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ETS 3 (Kiku 4)


ETS 3 (Engineering Test Satellite 3) was launched by Japan. The satellite nickname is Kiku-4. Objectives were to test the 3-axis attitude control function, solar array paddle deployment, thermal control, and instrument functions.

Also an ion engine propulsion system was tested, consising of two electron bombardment type mercury ion engines with 2 mN thrust and 2,000 sec specific impulse and a power conditioner with automatic control functions.

Nation: Japan
Type / Application: Technology
Operator: NASDA
Propulsion: 2 × mercury ion thrusters
Power: 2 deployable solar arrays, batteries
Mass: 385 kg
Orbit: 964 km × 1234 km, 45
Satellite COSPAR Date LS Launch Vehicle Remarks
ETS 3 (Kiku 4) 1982-087A 03.09.1982 Ta LP-N N-1