Kairos No. 2 Launch Failure Attributed To Sensor Fault

Sep 01, 2025 | News On Japan

TOKYO - A Tokyo startup that failed to launch its small “Kairos No. 2” rocket from a site in Wakayama Prefecture has disclosed that a malfunctioning sensor was to blame.

Space One, the Tokyo-based venture, attempted the Kairos No. 2 launch in December 2024, but the vehicle deviated from its intended trajectory and the flight was terminated, resulting in a failed mission.

Space One said on August 31 that a sensor designed to detect angular disturbances inside the motor malfunctioned, and it will partially redesign the sensor ahead of the next attempt.

Mamoru Endo, a director at Space One, said the company “will examine how the system functions even when multiple failures occur and move forward with preparations accordingly.”

The timing for the Kairos No. 3 launch will be announced once a schedule is set.

Source: KTV NEWS

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