**长征七号火箭手动点火发射天舟七号：新挑战与技术突破**
近日，我国航天领域迎来了一次重要的发射任务——天舟七号货运飞船将由长征七号遥八运载火箭组合体进行发射。这一任务不仅标志着长征七号火箭首次采用手动点火技术，而且对工作人员的技能和反应速度提出了更高的要求。据央视新闻报道，为确保点火的精确性，误差必须控制在1秒内。为了应对可能出现的问题，工作人员已经制定了300余条处置措施。
手动点火虽然提高了发射日流程的灵活性，但同时也增加了操作的难度。为确保零窗口点火，工作人员在发射前的准备工作上付出了巨大的努力。他们不仅要精确到分钟，甚至在发射前10分钟要精确到秒。此外，他们还熟练掌握了进入射前4分钟内的10余条口令的下达时机和每一条操作内容，确保能够迅速判断和反馈岗位上的200多个状态。为了应对可能出现的手动点火故障，他们还进行了多次模拟演练，并设定了130多个可能出现的故障模式及相应的处置措施。
英语如下：
Title: Long March 7 Rocket Manual Ignition for First Time: Challenges and Breakthroughs
Keywords: Long March 7 manual ignition, Tianzhou-7 mission, 3-hour rapid rendezvous and docking
Content: **Long March 7 Rocket Manual Ignition Launches Tianzhou-7: New Challenges and Technological Breakthroughs**
Recently, China’s aerospace industry has embarked on an important launch mission – the cargo spacecraft Tianzhou-7 will be launched by the Long March 7 Y8 carrier rocket. This mission not only marks the first time that the Long March 7 rocket adopts manual ignition technology, but also sets higher requirements for the skills and reaction speed of the staff. According to CCTV news, in order to ensure the accuracy of the ignition, the error must be controlled within 1 second. To cope with possible problems, the staff has formulated more than 300 disposal measures.
Manual ignition not only improves the flexibility of the launch day process, but also increases the difficulty of operation. To ensure zero window ignition, the staff has made tremendous efforts in pre-launch preparations. They must be accurate to the minute, even to the second in the last 10 minutes before launch. In addition, they have mastered the timing and content of more than 10 orders in the last four minutes before launch, ensuring they can quickly judge and feedback on more than 200 statuses on their posts. To cope with possible manual ignition failures, they have conducted multiple simulation exercises and set up more than 130 possible fault modes and corresponding disposal measures.
【来源】https://www.ithome.com/0/745/553.htm
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