JAXA：推迟“ H3”火箭发射的原因
JAXA：
大型后备火箭“ H3”计划于2020年发射
首台测试机的发布将推迟至2021财年。
可以燃烧测试：
经过五月份的发动机燃烧测试，发现燃烧室壁上的开口和涡轮的疲劳断裂表面。
从现在开始，
整个发动机的技术数据采集测试，
对涡轮进行叶片振动测试
在发布时预期的工作范围内演示开发规格。
推迟原因：
推迟发射的原因是已知的。
在发动机燃烧室/开口中，在冷却槽附近发现了14个缺陷部件，冷却燃烧室的氢气通过该缺陷。
当在高温运行条件下测试燃烧室壁时，已知燃烧室壁变得比设计值更热。
新开关
JAXA | Change of Schedule for the H3 Launch Vehicle Project
September 11, 2020 (JST)
The Japan Aerospace Exploration Agency (JAXA) has been pressing forward with the development of the H3 Launch Vehicle.
In the process, a technical problem
was identified regarding the LE-9 first-stage engine, which is a new engine now under development.
In order to address the problem in an appropriate manner,
JAXA has decided to postpone the launch of the first test flight from the Japanese fiscal year (JFY) 2020 to JFY 2021 and that of the second test flight from JFY 2021 to JFY 2022.
JAXA will deal with the LE-9 engine-related problem in an appropriate manner and make an all-out effort for the successful launch of the H3 as a new Japan’s mainstay rocket.