JAXA Epsilon S Rocket 2nd Stage Engine Explodes During Ground Test, Investigation Launched

 

 

 

The second-stage engine of Japan's solid-fuel rocket "Epsilon S," being developed by the Japan Aerospace Exploration Agency (JAXA), exploded during a ground combustion test on November 26.

The Epsilon S engine had also exploded during a ground combustion test in July 2023. At that time, JAXA explained that the explosion was caused by the melting of a metal part in the engine's internal ignition device.

The test on the 26th was conducted at the Tanegashima Space Center in southern Japan.

JAXA reported that the engine exploded 49 seconds after the test began. The test was scheduled to last for 2 minutes. No casualties or property damage were reported due to the explosion.

Regarding the cause of the explosion, a JAXA official stated, "The combustion pressure was higher than expected," and added that the specific cause would be clarified through an investigation.

In a statement on the 26th, JAXA expressed regret, saying, "We are sorry for the inconvenience and concern caused by this incident, and we take this matter seriously, especially since a similar incident occurred in July 2023."

JAXA also announced the formation of an investigation team led by Okada, the Director of the Aerospace Technology Directorate, to investigate the cause.

The Epsilon S is being developed as the successor to the existing Epsilon rocket series.

The second-stage engine of the Epsilon S, which exploded, is 3.2 meters in length and 2.5 meters in diameter. It is designed to carry 18 tons of solid fuel, which is about 3 tons more than the second-stage engine of the previous Epsilon rocket.

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JAXA Epsilon S Rocket 2nd Stage Engine Explodes During Ground Test, Investigation Launched