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蓝箭真空型液氧甲烷发动机完成首次全系统试车：国内推力最大_我的网站

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    High school students sing a song composed for the 50th anniversary of the A-bombing in 1995, "Senbazuru (A Thousand Paper Cranes)" during a Nagasaki Peace Ceremony to commemorate the 81st anniversary of the atomic bombing at the Peace Park in Nagasaki on August 9, 2026. Photo: VCG
The reported refusal by a delegation from the Taiwan island to attend Nagasaki's annual atomic bomb memorial ceremony over a seating arrangement dispute has once again highlighted the island authorities' attempt to seek a higher political status through international occasions, mainland experts slammed on Sunday, noting that such efforts cannot alter the historical and legal reality of Taiwan's status, only humiliating themselves.
According to Japanese media outlet the Sankei Shimbun's report on Sunday, the island's "representative to Japan" Lee I-yang announced on Sunday that he would not attend Nagasaki City's Peace Memorial Ceremony, citing that the city had failed to provide "appropriate treatment" in its seating arrangements. Lee claimed, per the report, that he would lodge a "strong protest" over the matter. The ceremony was attended instead by the head of the "Taipei Economic and Cultural Office's Fukuoka branch."
According to the Japanese media, a later statement by the island authorities claimed that despite requests made through lawmakers and others, Nagasaki city had "deliberately placed" the Taiwan delegation's seats "outside the diplomatic representatives' area." It said the arrangement was made in accordance with the wishes of Chinese mainland and described the move as "extremely regrettable and disappointing."
Commenting on the political farce, Li Fei, a professor at the Taiwan Research Institute of Xiamen University, told the Global Times that Taiwan authorities have long attempted to use international events and diplomatic occasions to create the impression of a separate international identity, but such efforts are inconsistent with the island's actual status and the international consensus.
Li Fei said the dramatic scene also comes at a sensitive moment for China-Japan relations, which are currently facing uncertainties after Japanese Prime Minister Sanae Takaichi made erroneous remarks regarding Taiwan. Against this backdrop, Japan has attempted to maintain leverage by playing the "Taiwan card," while also avoiding excessive moves that could provoke China further and cause consequences Japan could not afford, Li said.  
"The arrangement made by Nagasaki is in line with existing diplomatic norms," Li Fei said. "If Japan takes actions that challenge the one-China principle and further provokes China, it will inevitably lead to stronger dissatisfaction and could trigger countermeasures."
Li Fei said Taiwan authorities have misinterpreted the political support offered by some countries, mistakenly believing that external backing represents an increase in Taiwan's international status.
"In reality, the US and Japan want to use Taiwan as a strategic tool, but they do not want to lose Taiwan as a tool," Li Fei said. "That is why their policies often show hesitation and contradictions."
Li Xiaobing, another expert on Hong Kong, Macao and Taiwan affairs from Nankai University, said that Taiwan authorities have sought to use various opportunities to highlight their so-called "presence" and promote the image of a separate identity. However, such efforts have not received recognition or endorsement from the international community.
"Such attempts cannot succeed even in a country like Japan, which has nearly century-long history of conflict with China, including repeated aggression, oppression and the immense suffering inflicted on the Chinese people," the expert said. 
Given Japan's historical role, both people on the island of Taiwan and Taiwan's political figures should maintain a clear understanding of history and reality. "By seeking to gain political space through external support, Taiwan authorities have ultimately ended up humiliating themselves," Li Xiaobing said. 
Some mainland observers also noted that the Nagasaki ceremony should focus on reflecting on the tragedy of war and promoting peace, rather than becoming a platform for political maneuvering. Japan, in particular, should also reflect on its own historical responsibility when commemorating the victims of the atomic bombings.
"If Japan only emphasizes its identity as a victim while avoiding reflection on its role as an aggressor, it cannot never truly learn the lessons of history," Li Fei said.
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B |     10月19日消息，近日，蓝箭航天“天鹊”真空型液氧甲烷发动机（ TQ-15A）在湖州成功完成了首次全系统热试车，试验时长20秒，试验过程中发动机起动关机正常、工作平稳。据介绍，TQ-15A为目前国内推力最大的真空型液氧甲烷发动机，真空推力达836千牛，是朱雀二号火箭第二批次的二级主发动机。

C | 与现有80吨+10吨的二级发动机布局方案相比，取消了游动发动机TQ-11，主发动机由不摇摆改为泵前摆，降低了二级发动机系统复杂度，总重量减轻约400千克，推力室进一步增大喷管面积比，并将涡轮排气引入推力室大喷管进行冷却，解决了涡轮排气引起的干扰力问题。TQ-15A发动机真空推力提高9%、真空比冲提高130米/秒，推力调节范围拓宽至55%~110%且具备三次起动能力，可大幅提升火箭发射任务的适应性。本台TQ-15A发动机为带伺服机构不带大喷管状态，本次试车重点考核发动机系统、总装和各组合件改进方案的可行性，验证起动关机时序的正确性，获得发动机的实测性能数据及工作特性，发动机按预定程序起动和关机、工作平稳，达到了预期设计目标。本轮试车计划开展5次试车（含两次多次起动）、累计试车时间970秒，首次试车结束后将继续考核发动机长程工作可靠性、大范围推力调节时的工作适应性、发动机与伺服系统的工作协调性，多次起动、高低入口压力及过冷推进剂等各种条件下的发动机的工作适应性，全面验证发动机设计方案，并获得大喷管条件下发动机的性能数据。朱雀二号运载火箭自2017年9月立项至今，已完成了第一批次火箭技术状态的研发工作。目前，朱雀二号Y1火箭已出厂并完成低温加注合练，Y2火箭的总装工作正在嘉兴蓝箭航天中心进行。在此基础上，公司研发团队对第二批次火箭进行了研制迭代和优化改进，使之具备更优的性能和更高的可靠性。

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