Launch Schedule of X-band defense communication satellite-3 aboard the 4th H3 Launch Vehicle (H3 F4). [Rescheduled]
October 22, 2024 (JST)
Japan Aerospace Exploration Agency
Japan Aerospace Exploration Agency (JAXA) had scheduled the launch of the 4th H3 Launch Vehicle (H3 F4: Flight No.4) with X-band defense communication satellite-3 onboard on October 26, 2024. However, during a functional check of the rocket at the launch site, an incident occurred where the operation time of the second-stage engine's combustion chamber cooling valve (CCV) temporarily exceeded the specified limit. Although subsequent functional checks confirmed that the incident had been resolved, to ensure a flawless launch, JAXA has decided to replace the component that caused the incident, along with any other potentially affected components, and conduct inspections of similar parts. Due to the time required for these tasks, the launch date has been rescheduled as follows.
| Launch date | : October 30, 2024 |
|---|---|
| Launch Window | : 15:46 (JST) through 17:30 (JST)
*The time is the 24-hour clock |
| Reserved Launch Period | : October 31 through November 30, 2024 |
| Launch site | : Yoshinobu Launch Complex at the JAXA Tanegashima Space Center |