On the 17th of this month, regarding the first unit of Japan's new flagship rocket "H3" whose launch was canceled, JAXA = Japan Aerospace Exploration Agency (JAXA) found an abnormality in the equipment in the first stage of the rocket that supplies power to the main engine. I have revealed the results of the investigation that happened.
After investigating the cause, JAXA plans to launch again by the 10th of next month.
The first "H3" was scheduled to be launched from the Tanegashima Space Center in Kagoshima Prefecture at 10:37 am on the 17th of this month. The launch was aborted.
After returning the first machine to the assembly building on the 18th of this month, JAXA has begun a full-scale investigation into the cause, and on the 22nd, reported the results of the investigation so far at an expert panel of the Ministry of Education, Culture, Sports, Science and Technology.
According to reports, about 6 seconds before launch, after the main engine started to burn, the current and voltage became zero inside a device called "V-CON1," which supplies power to the equipment that regulates the combustion. It turned out that an anomaly had occurred.
JAXA is investigating the detailed cause, focusing on the operation of the switch inside the device and the electrical system between the equipment and the ground equipment, because it does not send the ignition signal to the auxiliary rocket when it detects an abnormality in the power supply. about it.
In addition, assuming that there is no damage to the airframe, including the auxiliary rocket, the ground equipment, and the on-board satellite, after investigating the cause and taking countermeasures, it will be launched again by the 10th of next month, which is the preliminary launch period. It is a policy to come.