JAXA Sets Mid-February Launch Date for H3 Rocket Redemption Mission

Space New ,Japan :- Japan space agency, JAXA, is gearing up for the anticipated return to flight of its H3 rocket, marking a significant milestone almost a year after the vehicle initial launch encountered a setback.

On December 27, JAXA officially announced that the second attempt to launch the H3 is scheduled for no earlier than February 14 (February 15 Japanese time) from the Tanegashima Space Center. The launch window for this mission, known as H3 Test Flight No. 2 or H3TF2, extends through the end of March.

This upcoming launch is poised to be a crucial moment for the H3, as it follows the challenges faced during its inaugural flight on March 7. During that mission, while the first stage performed as expected, the engine in the second stage failed to ignite, prompting the activation of the vehicle flight termination system.

Details surrounding the cause of the failure have been limited, with both JAXA and Mitsubishi Heavy Industries (MHI), the prime contractor for the H3, keeping information under wraps. The second stage engine similarity to the one used on the existing H-2A led to a delay in the launch of the H-2A carrying the XRISM X-ray astronomy satellite and SLIM lunar lander from May to September.

Iwao Igarashi, MHIs vice president and general manager, revealed at the World Satellite Business Week conference in September that the investigation into the H3 failure had concluded in August. However, he did not disclose the specifics of the findings, stating, "We defined the corrective actions, and some of them applied to the H-2A launch vehicle." He expressed the company commitment to preparing for the H3 return to flight, initially planned for late 2023.

A notable change for the second H3 launch is the payload. Following sharp criticism for placing the valuable ALOS-3 Earth observation satellite on the rocket first flight, JAXA has opted for a test payload for the upcoming mission. Named the Vehicle Evaluation Payload-4, this mission will also carry two smallsat secondary payloads – CE-SAT-1E, an Earth imaging spacecraft developed by Canon Electronics, and TIRSAT, a cubesat with an infrared Earth observation instrument built by Japan Space Systems.