The launch abort is not a failure. The preliminary cause of the Japanese H3 rocket failure is identified: the first-level power supply is abnormal
On the afternoon of the 17th, the Japanese aerospace department originally planned to launch the first H3 rocket for the first time. However, due to a malfunction, the launch was terminated, which also sparked controversy over whether the launch failed.
At that time, the head of the Japan Aerospace Exploration Agency’s H3 rocket project, Okada Yasushi, announced the cause of the accident at a subsequent press conference. About 6 seconds before the launch of the H3 rocket, its first-stage LE-9 main engine would be the first to ignite. After confirming that this step is successful, the solid rocket thrusters will not ignite.
Okada Yasushi emphasized that the launch of H3 was suspended and postponed, not a failure.The definition of launch failure is also explained.
However, some Japanese journalists insisted on reporting that the launch was a failure.
Now Japan has preliminarily ascertained the cause of the H3 rocket. The report pointed out that after the core stage LE-9 hydrogen-oxygen machine was successfully ignited and 90% of the thrust was established, before the ignition signal was sent to the SRB-3 solid booster,The self-inspection of the primary control system found that there was an abnormality in the power supply system of the primary engine, and then the launch procedure was terminated urgently.
The power supply anomaly is specifically related to some kind of impact that may be caused by ground electrical equipment, but there is no problem with the first-stage LE-9 engine and the SRB-3 solid booster itself.
Japan will continue to conduct in-depth investigations and solve problems in the future.Aim for another attempt to launch the H3 rocket by March 10.
