卫星互联网技术试验卫星成功发射Satellite Internet technology test satellite successfully launched来源：央视新闻 | 2023年11月23日 19:19:04Source: CCTV News | November 23, 2023 19:19:04记者从中国科学院获悉，2023年11月23日18时00分04秒，我国在西昌卫星发射中心使用长征二号丁运载火箭及远征三号上面级成功将卫星互联网技术试验卫星发射升空，卫星顺利进入预定轨道，发射任务取得圆满成功。卫星互联网技术试验卫星由中国科学院微小卫星创新研究院（上海微小卫星工程中心）抓总研制。The reporter learned from the Chinese Academy of Sciences that at 18:00:04 on November 23, 2023, my country successfully launched the satellite Internet technology test satellite from the Xichang Satellite Launch Center using the Long March 2D carrier rocket and the Yuanzheng 3 upper stage. It entered the scheduled orbit smoothly and the launch mission was a complete success. The satellite Internet technology test satellite is developed by the Microsatellite Innovation Institute of the Chinese Academy of Sciences (Shanghai Microsatellite Engineering Center).本次任务是中国科学院微小卫星创新研究院第50次卫星发射任务，截至目前，该研究院已成功发射涵盖通信、导航、遥感、科学、微纳等领域的96颗卫星。This mission is the 50th satellite launch mission of the Microsatellite Innovation Institute of the Chinese Academy of Sciences. So far, the institute has successfully launched 96 satellites covering communications, navigation, remote sensing, science, micro-nano and other fields.（总台央视记者 帅俊全 褚尔嘉）(CCTV reporters Shuai Junquan and Chu Erjia)
The payload is Xingwang Qinxie Guidao-2 (星网倾斜轨道02组), the payloads on July 9 is Xingwang Qinxie Guidao-1A/B.
CelesTrak has GP data for 3 objects from the launch (2023-181) of a technology experiment satellite atop a Long March-2D rocket from Xichang Satellite Launch Center on Nov 23 at 1000 UTC: english.news.cn/20231123/b0cd6…. Data for the launch can be found at:
Quote from: mikezang on 11/23/2023 01:21 pmThe payload is Xingwang Qinxie Guidao-2 (星网倾斜轨道02组), the payloads on July 9 is Xingwang Qinxie Guidao-1A/B.So, we have three designations for this satellite:- Xingwang Qinxie Guidao-2 (星网倾斜轨道02组) - Weixing Hulianwang Jishu Shiyan (卫星互联网技术试验卫星)- Changxin-20Is that it?
What is Chinese of Changxin-20?
Quote from: mikezang on 11/23/2023 11:32 pmWhat is Chinese of Changxin-20?前哨20号 = Chuangxin 20.
Quote from: Liss on 11/24/2023 06:22 amQuote from: mikezang on 11/23/2023 11:32 pmWhat is Chinese of Changxin-20?前哨20号 = Chuangxin 20.创新二十号？
Maybe it's just a continuation of the previous launch announcement, not a brand new launch. I don't think Xichang is capable of supporting such a high-density launch of the same rocket.
Quote from: yuebai on 11/25/2023 01:03 amMaybe it's just a continuation of the previous launch announcement, not a brand new launch. I don't think Xichang is capable of supporting such a high-density launch of the same rocket.There is two launch pad..., what does '(AREA-PT)' mean in NOTAM?
Quote from: mikezang on 11/25/2023 01:11 amQuote from: yuebai on 11/25/2023 01:03 amMaybe it's just a continuation of the previous launch announcement, not a brand new launch. I don't think Xichang is capable of supporting such a high-density launch of the same rocket.There is two launch pad..., what does '(AREA-PT)' mean in NOTAM?1. I don't think we have ever seen the 2 bigger pads being used in 2 day intervals at XSLC so far.2. It is certainly possible for mobile-launching small satellite launchers being used within 2 days (we have just seen a KZ-1A flying 1.5 days after a CZ-3B at Xichang this August), but there would have been other drop zone notices filed in such a case...and it doesn't.More likely is that this NOTAM (which was out less than 3 hours ago) is an extension notice filed by China to other aviation authorities (in this case Australia) to cover longer periods for the already happened launch, and it took them quite some time to publish it. Notice it covers today and tomorrow, which is a few days too late by previous experiences if a launch is to happen today. And without other drop zone notices I don't see it.
After 5 years, the "Yuanzheng" expedition again | A side note of the Changerding rocket and the Yuanzheng-3 upper stage working together againOn December 29, 2018, the first flight test of the Yuanzheng-3 upper stage, developed by the Eighth Academy of China Aerospace Science and Technology Corporation, was a complete success, marking my country's major application breakthrough in the field of off-orbit multi-satellite launches. After a lapse of five years, the Yuanzheng-3 upper stage went on an expedition again.On November 23, about an hour after the Yuanzheng-3 upper stage separated from the rocket, it successfully put the satellite into the predetermined orbit after two precise orbit changes.Tan Xuejun, commander-in-chief of the Yuanzheng-3 upper stage, introduced that compared with the first flight state, the Changerding rocket and the Yuanzheng-3 upper stage adopted a joint flight state in this mission, that is, the separation point of the rocket and the upper stage is in suborbital, and the upper stage It flies as the third sub-stage of the rocket and is ignited for the first time to enter orbit. In this way, the carrying capacity is improved.Yuanzheng-3, also known as the "multi-satellite launch upper stage", adopts the design ideas of structural power integration, main and auxiliary power integration, and electrical integration. "This is a flexible, fast and multi-purpose orbital deployment tool. It has the characteristics of autonomous maneuvering and rapid deployment. It can complete tasks such as orbital transfer and orbital deployment. It is an effective way to improve rocket performance and mission adaptability." Tan Xue Military introduction.Since the launch of the project in August 2014, the Yuanzheng-3 upper stage has successively achieved breakthroughs in the multi-sphere load-bearing tank integrated structural platform, precise autonomous control technology for off-orbit multi-satellite deployment, large-angle swing engine and main-auxiliary integrated power technology. , high-reliability electrical integration design technology and other key technologies.The most noteworthy feature of the Yuanzheng-3 is its ability to conduct more than 20 autonomous rapid orbital maneuvers and deployments. Tan Xuejun explained that satellites with different orbital requirements can enter their respective predetermined orbits by "riding" the Yuanzheng-3 upper stage. They no longer need to consume the fuel carried by the satellite to reach their destination, thus significantly extending the satellite's working life in orbit.According to Zhao Ziqiang, chief designer of the Yuanzheng-3 upper stage, the upper stage is generally used to complete orbit entry tasks, such as geosynchronous transfer orbit and interplanetary transfer orbit, so some of their working hours are only a few hours, while others are much better. a few days. There are also some upper stages that need to be connected to satellites for a long time to provide them with full-life orbit maneuvers, which may take several months to fly.In view of the long flight time of the Yuanzheng-3 upper stage in orbit and the space environment such as force, heat, and space particles during the mission, the model team carried out design work on the mechanical environment, thermal environment, and space environment adaptability of each single-machine component. The product has been verified by mechanical, thermal vacuum and other environmental tests.In fact, spacecraft that are directly launched into medium and high orbits generally do not have the ability to adjust their orbits in a wide range. The spacecraft is directly sent into the target orbit through the upper stage. The precise design of its orbit is the basis for high-precision orbit insertion. In terms of precise orbit design, the model team made breakthroughs in multiple technologies through research and achieved precise control of fully autonomous multi-satellite off-orbit deployment."It can independently determine the flight trajectory and attitude during the entire mission without the support of ground measurement and control. It can truly achieve unmanned control after launch and realize the autonomous completion of orbital deployment tasks." Tan Xuejun said.Today’s rocket upper stages are responsible for multi-satellite and off-track space transportation missions. However, with the normalization of the one-rocket multi-star launch mode, especially as the scale of constellation construction becomes larger and more diverse, the upper stage It will adopt a modular and combined design and combine with different basic-stage rockets to further improve the carrying capacity and mission adaptability."As a 'space bus', the Yuanzheng-3 upper stage will achieve larger-scale rapid deployment of multiple satellites in different orbits or constellation network replenishment deployment, greatly improving the rapid and flexible space entry, space transfer and space utilization of my country's launch vehicles. Ability." Zhao Ziqiang said.While developing in the direction of intelligence and modularization to achieve autonomous mission planning, on-orbit mission adaptive control, and on-board autonomous management, in the future the Yuanzheng-3 upper stage can also be used as an orbit-retaining test platform after completing its main mission. Conduct on-orbit technical verification, or serve as a space debris removal platform to carry out space debris cleanup work."The Yuanzheng-3 upper stage has the ability to adjust orbital altitude, orbital phase, and orbital inclination, and has strong mission adaptability. It can be used as an orbit transfer tool in the future to support various application scenarios such as on-orbit services, interstellar exploration, and commercial aerospace." Tan Xuejun express.
We have learned, that at least one satellite is called CX-20 according to a photograph showing the CX-20 launch test team. Now I found a report issued about one week ago by Shanghai Institute of Optics and Fine Mechanics about the the launch site test team mobilization meeting at November 15th for CX-19 and CX-20. The report tells that the main payload of both satellites is a Laser Communication Terminal. The report tells only about two satellites instead of three. What does it mean? Here is the link to the report https://siom.cas.cn/xwzx/zhxw/202311/t20231117_6898339.htmlbut unfortunately you will be redirected to another web page. Instead try to search for "CX-20卫星" and use the cache of the search engine.