【环球时报-环球网报道 记者 樊巍 通讯员 高诗淇、桑茜】9月13日21时18分，由中国航天科技集团有限公司所属中国运载火箭技术研究院（以下简称“火箭院”）抓总研制的长征七号A运载火箭，在海南文昌航天发射场点火升空，成功将中星1E卫星送入预定轨道，未来，该卫星可为用户提供高质量通信广播电视服务。

二 |     Havana, Oct 20 (UNI) Cuban Foreign Minister Bruno Rodriguez called on the US government to lift its decades-long trade embargo, or blockade, against the country.



"The US blockade has caused Cuba losses valued at 3.806 billion US dollars between August 2021 and February 2022," Rodriguez told a press conference in the country's capital Havana on Wednesday.



The call comes ahead of the Cuban government's annual submission to the UN General Assembly of a draft resolution calling for an end to the embargo. The General Assembly is scheduled to discuss and vote on the draft resolution in early November.



US trade sanctions, Rodriguez said, severely limit Cuba's access to food, medicine, technology and inputs on the international market.



"The world would be a better place without the US blockade against Cuba," he added.



First imposed in 1962, the embargo was broadened by former US President Donald Trump, who put in place 243 more sanctions, including banning all flights from the United States to Cuban destinations except for Havana, and capping remittances Cuban Americans can send to their families back home.



The current US administration allowed airlines to resume flights to other Cuban cities and lifted the cap on remittances, but the web of sanctions against Cuba remains largely in place.



For 29 times in a row, the UN General Assembly has voted in favor of the resolution urging the United States to end its embargo against Cuba.

UNI/XINHUA PRT。据了解，长七A火箭是我国新一代中型运载火箭的主力构型，是在长征七号运载火箭和长征三号甲系列运载火箭三子级基础上、通过组合化设计形成的高轨三级液体捆绑式运载火箭，地球同步转移轨道运载能力不低于7吨，填补了我国运载火箭地球同步转移轨道5.5至7吨运载能力的空白，可适配直径4.2米和3.7米两种整流罩，具备一箭一星和一箭双主星发射能力。长七A火箭主任设计师魏远明在接受媒体采访时介绍，执行本次发射任务的长七A遥五火箭，采用4.2米直径整流罩的构型，全箭高度60.1米，与2021年3月12日发射的遥二火箭高度一致。长七A火箭作为我国首型采用助推器与芯一级集束式分离技术的捆绑火箭，相比通常先分离助推器、再分离芯一级的方式，减少了一次分离环节，使火箭捆绑连杆结构更加简化。同时，集束式分离也减少了一个助推器落区，整个组合体都在一个落区内，更加有利于控制火箭残骸落区。此次任务是长七A火箭第四次执行发射任务，火箭状态正在逐步固化，同时为进入高密度发射阶段提前准备。

三 | 魏远明介绍，型号队伍针对火箭技术设计进行了多项优化改进，在确保测试覆盖性的前提下，通过优化流程顺序、并行工作、合并测试等方法，将发射技术流程由32天缩减至26天。不仅如此，根据高轨卫星整体发展态势，以及高轨卫星配置大尺寸天线的迫切需求，长七A火箭未来还将研制5.2米整流罩的新构型，进一步提高火箭的任务适应性。

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Published on:12:43:48