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中国首个“液氧甲烷+不锈钢+海上软着陆回收”火箭成功回收

箭元科技“元行者一号”验证型火箭星期四(5月29日)凌晨4时40分在山东海阳东方航天港成功完成首次海上飞行回收试验。

据大众新闻报道,上述飞行回收试验取得成功,是液体可复用火箭研制进程中的重大突破。箭元科技成为中国首个实现“液氧甲烷+不锈钢+海上软着陆回收”技术突破的企业,同时标志着大尺寸不锈钢可复用运载火箭进入工程应用阶段,为今年的元行者一号首飞奠定坚实基础。

元行者一号为全尺寸薄壁不锈钢火箭,直径4.2米,总高度约26.8米,起飞质量约57吨,试验飞行时长125秒,飞行高度约2.5公里。本次飞行试验顺利完成点火起飞、满推力爬升、变推力调节、发动机一次关机、自由下降滑行、发动机二次启动、减速至海面悬停、海面软着陆八个工作阶段。试验过程火箭飞行和溅落回收均正常。

公开资料显示,元行者一号中型运载火箭设计运载能力可满足“一箭一轨”的低轨卫星组网发射需求,一子级设计重复使用20次,产量可满足每年25次发射服务需求。

#中国 #火箭



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中国首个“液氧甲烷+不锈钢+海上软着陆回收”火箭成功回收

箭元科技“元行者一号”验证型火箭星期四(5月29日)凌晨4时40分在山东海阳东方航天港成功完成首次海上飞行回收试验。

据大众新闻报道,上述飞行回收试验取得成功,是液体可复用火箭研制进程中的重大突破。箭元科技成为中国首个实现“液氧甲烷+不锈钢+海上软着陆回收”技术突破的企业,同时标志着大尺寸不锈钢可复用运载火箭进入工程应用阶段,为今年的元行者一号首飞奠定坚实基础。

元行者一号为全尺寸薄壁不锈钢火箭,直径4.2米,总高度约26.8米,起飞质量约57吨,试验飞行时长125秒,飞行高度约2.5公里。本次飞行试验顺利完成点火起飞、满推力爬升、变推力调节、发动机一次关机、自由下降滑行、发动机二次启动、减速至海面悬停、海面软着陆八个工作阶段。试验过程火箭飞行和溅落回收均正常。

公开资料显示,元行者一号中型运载火箭设计运载能力可满足“一箭一轨”的低轨卫星组网发射需求,一子级设计重复使用20次,产量可满足每年25次发射服务需求。

#中国 #火箭

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联合早报 即时报道 Telegram | DID YOU KNOW?

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Telegram today rolling out an update which brings with it several new features.The update also adds interactive emoji. When you send one of the select animated emoji in chat, you can now tap on it to initiate a full screen animation. The update also adds interactive emoji. When you send one of the select animated emoji in chat, you can now tap on it to initiate a full screen animation. This is then visible to you or anyone else who's also present in chat at the moment. The animations are also accompanied by vibrations. This is then visible to you or anyone else who's also present in chat at the moment. The animations are also accompanied by vibrations.

Telegram auto-delete message, expiring invites, and more

elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.

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