Tag: Long March 3b

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #June2021|#西昌衛星發射中心 # Xichang Satellite Launch Center – Successfully launching the advance iconic #LongMarch3B #ChangZheng3B #CarrierRocket to deploy the advance high velocity data #WeatherSatellite #EarthSciences #MeteorologicalSatellite #Fengyun4B …..

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On the 3rd June 2021 in early morning CNSA _China National Space Administration -China – People’s Republic of China At 0017 Hong Kong –Beijing Time on pasting midnight  early morning …. China- People’s Republic of China successfully launched the advance Earth Sciences successful launch of Fengyun 4B] At 0:17 on June 3, amid the huge roar of the Xichang Satellite Launch Center, the Long March 3B- Chang Zheng 3B carrier rocket pierced the night sky and sent the Fengyun 4B star into its intended orbit. The launch was a complete success .from the Xichang Satellite Launch Center Sichuan Province …. This launch is the 119th launch of the Long March series of rockets and the 372nd launch of the Long March series of carrier rockets. 


The Fengyun-4B star was developed by the Eighth Academy of Aerospace Science and Technology Group. It has a launch weight of 5400 kg and a design life of 7 years. It is mainly used in my country’s weather analysis and forecasting, environment and disaster monitoring and other fields. The 4A satellite jointly realizes the operation of the dual-satellite networking service of my country’s new generation of geostationary orbit satellites.


“The main characteristics of a geostationary meteorological satellite are reflected in two aspects. The first is to use the advantages of stationary gaze, and the second is to have a very flexible observation mode.” Said Chen Xiaojie, deputy director of the General Office of Meteorology and Environment, 509 Institute of Aerospace Science and Technology Group.
The Fengyun-4A satellite is my country’s first second-generation geostationary meteorological satellite, which is a scientific experimental satellite. The FY-4B satellite is the second satellite in the FY-4 series and the first operational satellite in the series. Based on the FY-4A star, the FY-4B star’s ability to observe this aspect flexibly has been greatly improved.


“The design life of the Fengyun-4 A star is 7 years, and the assessment life is 5 years. The assessment life will expire at the end of this year, but from the current overall situation, the star is expected to continue to work normally for 7 years or more, and the B star will go up. Later, it will form a situation of double star observation in orbit with Star A.” said Chen Qiang, the overall chief designer of Fengyun 4 B Star. According to reports, in the earliest period, the Fengyun 2 can achieve one picture per hour, and then gradually realize one picture for half an hour. When the Fengyun 4A satellite is reached, the image of the entire China area can be updated every 5 minutes. Now with two satellites, you can see two pictures in 5 minutes. “The weather forecast process is very complicated and involves many factors. Satellites play a major role in providing data. The FY-4 A and B satellite networks will generate more, more accurate, and faster updated data. It will help improve the accuracy of forecasting.” said Dong Yaohai, chief designer of Fengyun 4 B satellite.

【FY-4B Star】FY-4B is the second satellite in the FY-4 series. It has a launch weight of 5400 kg and a design life of 7 years. It is also the first operational satellite of the series. After entering orbit, it can realize imaging of a million square kilometers area 3-4 times per minute, and the visible light resolution is the highest among the current global stationary meteorological satellites, reaching 250 meters, which is double that of the A satellite; it will be more flexible to achieve with the A satellite The double-satellite network observation of China has brought a leap in the ability of high-frequency weather observation.
. During the “14th Five-Year Plan” period, my country will also launch two Fengyun-4 series meteorological satellites. Referencing from the Eighth Academy of Aerospace Science and Technology…


During the Fengyun 4 B satellite launch mission, the Long March 3 B to 3 Yao 72 launch vehicle completed 17 technologies in terms of engine and utilization control machine. The state improvement makes the quality of the engine more stable and reliable, and at the same time the use of the control machine is improved and optimized to continuously improve the reliability and safety of the product.
“Using the control machine is mainly used to adjust the propellant mixture ratio of the rocket’s three-stage engine to achieve the same proportional consumption of the two propellants, which can effectively guarantee the carrying capacity. We can further improve the system by optimizing the design of the relay using the control machine. Reliability of work.” Zhang Tao said.
In terms of quality management, the Changsan B Rocket Launch Team has implemented an electronic, full-process launch site quality verification system for the first time, linking the refinement of quality control with the verification system, and improving the efficiency of quality management.

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#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #CLEP #February2021 | #VonKarmanCrater #LunarMission #Change4 #Yutu2 Lunar adventuring 628.5 Meters #LunaExploration Summary waking up on 27th day before #ChineseLunarNewYear …..

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As of 6th February 2021 Saturday , The CNSA –China National Space Administration Belt and Road Initiative CLEP- China Luna Exploration Program   Lunar Mission……Chang’e-4 successfully awakened and entered the 2th day of the work period before the Chinese Lunar New Year – year of the OX.. ….On the far back of the moon on the 103 Kilometer diameter Von Karman Crater , the Chang’e 4 lander and the “Yutu 2” lunar rover ended moon night dormancy at 16:48 and 4:26 on February 6th Hong Kong –Beijing time, and were awakened autonomously by light, and entered the 27th month day work period . Since the “Yutu-2” lunar rover reached the surface of the moon, it has travelled a total of about 628.5 meters. It is currently located northwest of the landing site, about 430 meters straight from the landing site.

Scientific exploration planned on the 27th day:

  • The panoramic camera selects the opportunity to take color images of rocks and impact craters.
  • (2) Drive to a rock block with a diameter of about 18cm to the southwest of the current lunar rover position, about 17.8m away from the current location, and use an infrared imaging spectrometer to detect the rock and the surrounding lunar soil.

在遥远的月球背面，嫦娥四号着陆器和“玉兔二号”月球车分别于2月6日16时48分和4时26分结束月夜休眠，受光照自主唤醒，进入第27月昼工作期。“玉兔二号”月球车走到月面以来，累计行驶里程约628.5米，目前位于着陆点西北方向，距离着陆点直线距离约430米。

第27月昼拟开展的科学探测：

  • 全景相机择机对石块和撞击坑进行彩色图像。
  • （2）向当前月球车位置西南方一直径约为18cm的岩块行驶，距离当前位置约8m，利用红外成像光谱仪对该石块及周边月壤进行探测。

Previously  of 20th January 2021 Wednesday, The CNSA –China National Space Administration Belt and Road Initiative Lunar Mission……Chang’e-4 successfully awakened and entered the 26th day of the work period….Chang’e 4 enters the 26th moon night] The Chang’e 4 lander and the “Yutu 2” lunar rover completed the 26th day of the month at 21:10 and 14:06 on January 20, and were set up according to ground instructions. Enter the moonlit night dormancy. Up to now, the Chang’e 4 lander and the “Yutu 2” lunar rover have worked on the moon for 749 earth days, with a cumulative mileage of 628.47 meters.

Images and visuals are from Weibo CNSA –China National Space Administration –CLEP- China Luna Exploration Program..

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #February2021|#西昌衛星發射中心 # Xichang Satellite Launch Center – Successfully launching the iconic #LongMarch3B #ChangZheng3B #CarrierRocket to deploy the advance high velocity data #Radio #Television #CommunicationSatellite Number Six Testing Satellite …..

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On the 4th February  2021 Wednesday almost midnight  CNSA _China National Space Administration -China – People’s Republic of China At 23:36 Hong Kong –Beijing Time on an early morning past midnight of  January 20th , 2021, China successfully launched the Radio Television Communications Satellite using the Long March 3B carrier rocket at the Xichang Satellite Launch Center Sichuan Province  Lift off. The satellite successfully entered the scheduled orbit, the mission was a complete success, and China’s space launch has a good start in 2021…..

In which China – People’s Republic of China Successfully Launched Communication Technology Test Satellite No. 6……..  At 23:36 on February 4th, Beijing time, China successfully launched the Communication Technology Test Satellite No. 6 with the Long March 3B carrier rocket at the Xichang Satellite Launch Center , The satellite enters a predetermined orbit. The communication technology test satellite No. 6 is mainly used for satellite communication, radio and television, data transmission and other services, and to carry out relevant technical test verification data transmission and other services, and carries out relevant technical test verification. This mission is the 360th flight of the Long March series of carrier rockets

Launching from  Xichang Satellite Launch Center, the Long March 3B carrier rocket lifted the communication technology test satellite Number six went straight into the sky. Subsequently, the satellite was successfully sent into the predetermined orbit, and the launch mission was a complete success. This is also the last aerospace mission of the Aerospace Science and Technology Group before the Spring Festival of the Ox.

Previously before- Prior the launching of the Long March 3B –Chang Zheng 3B Carrier Rocket in its assembly there was an here is an episode in this launch. On the eve of the communication technology test satellite 6 being transported to the Xichang Satellite Launch Center, the three air transport plans prepared in advance by the test team could not be used due to various reasons. This means that the test team must be ready to change air transport to land transport.

Ji Hongxia, the director of the 812 Institute of Aerospace Science and Technology Group, heard the news at more than 10 o’clock in the evening. That night, he needed to complete the four types of “rail transportation, railway + road transportation, road transportation, and road + rail transportation”. Transportation plan for discussion at the meeting on the second day.

Everything is ready, just wait to go. At this time, the railway side sent another notice: the section of the train passing by requires maintenance. If you have to wait for the repair of the originally scheduled section to be completed, the departure time will have to be delayed; if you want to change to another section, the train carrying the box is too wide for the alternative section, and there are some narrow caves…..

In order to start as soon as possible, the test team launched the fifth set of plans: detours. The satellite platform and the payload are operated separately, the platform is on the highway and the payload is on the railway. This involves road transport. “When we learned that the air transport plan would not work, we tried it on the road, and we had a good idea of ​​all the data.” Ji Hongxia said.

The road transport fleet and the railway transport train set off in sequence, and arrived in sequence as planned. The test crews on the two transportation lanes were all haggard, but the satellites on the car were in stable condition. Upon arrival, after unpacking inspection, the satellite’s various status indicators were normal-the test team’s transportation research was a complete success

Images and visuals are from Weibo..

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #CLEP #January2021 | #VonKarmanCrater #LunarMission #Change4 #Yutu2 Lunar adventuring 628.47 Meters #LunaExploration Summary of 746-day scientific research results reveal micro-scale thermal radiation characteristics of the moon….

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As of 20th January 2021 Wednesday, The CNSA –China National Space Administration – CLEP- China Luna Exploration Program Belt and Road Initiative Lunar Mission……Chang’e-4 successfully awakened and entered the 26th day of the work period….Chang’e 4 enters the 26th moon night] The Chang’e 4 lander and the “Yutu 2” lunar rover completed the 26th day of the month at 21:10 and 14:06 on January 20, and were set up according to ground instructions. Enter the moonlit night dormancy. Up to now, the Chang’e 4 lander and the “Yutu 2” lunar rover have worked on the moon for 749 earth days, with a cumulative mileage of 628.47 meters.

The Chang’e 4 lander and the “Yutu 2” lunar rover completed the 26th day of the month at 21:10 and 14:06 on January 20, completed the set-up according to ground instructions, and entered moon-night sleep. Up to now, the Chang’e 4 lander and the “Yutu 2” lunar rover have worked on the moon for 749 earth days, with a cumulative mileage of 628.47 meters.

Based on the first-hand data obtained by the Chang’e-4 mission, the scientific research team continues to achieve scientific results. The team of researcher Wu Yunzhao from the Purple Mountain Observatory of the Chinese Academy of Sciences took a different approach and used the visible near-infrared spectrometer (VNIS) to study the thermal radiation characteristics, obtained the thermal radiation characteristics of the moon on the micro-scale, and performed thermal correction of the spectrum, and related results were published….. In Geophysical Research Letters…

Researcher Wu Yunzhao first discovered the existence of thermal radiation in the spectral data of Chang’e-3 (Wu and Hapke, 2018). The first-month diurnal spectrum data of Chang’e-4 confirmed the discovery, and the tenth day fixed-point measurement provided more observational support. Figure 1 shows that after 2 μm, the spectral uplift gradually strengthens as the sun rises, and gradually decreases as the sun sinks. On the one hand, this discovery helps to interpret spectral data correctly, and on the other hand, it expands the application of spectrometers, not only for studying minerals, but also for studying the thermal radiation of the moon. This study shows that even in the 2 μm and mid-latitude mineral inversion studies, thermal correction is required….

Even in the pure thermal radiation region, the solution of temperature and emissivity is an under-determined equation, while the mid-infrared has both reflection and thermal emission, and temperature solution is more complicated. The study found that, in addition to the material composition, the heat radiation characteristics are significantly affected by the micro-scale roughness (Figure 2). In addition to the phase angle, the influence of the relative azimuth angle between the observation and the incident is very obvious (Figure 3). The two-way roughness slope of the micro-scale topography of the Chang’e-4 lunar soil is 22°-24°.

In the past, the research on the temperature characteristics of the lunar surface was mainly based on macro-satellite remote sensing data, and the wavelength was in the thermal infrared band. This research carried out for the first time the micro-scale and short-wave thermal radiation characteristics of lunar soil, which is of great significance for mid-infrared research. The spectrum used in this study has the superposition of solar reflection and the moon’s own thermal radiation. There are great difficulties in spectral analysis and application, and it is a spectral region that has relatively little research. The mid-infrared spectrum is very useful. Water, OH, organic matter, and minerals have discriminative spectral characteristics in the mid-infrared, and they are the key spectrum for detecting extraterrestrial life substances…

Scientific achievements come from: Researcher Wu Yunzhao’s team at Purple Mountain Observatory, Chinese Academy of Sciences

嫦娥四号进入第26月夜，研究成果揭示月球微尺度热辐射特性

​​     嫦娥四号着陆器和“玉兔二号”月球车分别于1月20日21时10分和14时06分完成第26月昼工作，按地面指令完成设置，进入月夜休眠。截至目前，嫦娥四号着陆器和“玉兔二号”月球车已在月面工作749个地球日，累计行驶里程628.47米。

​

     科研团队根据嫦娥四号任务获取的第一手数据，持续取得科学成果。中国科学院紫金山天文台吴昀昭研究员团队另辟蹊径，将可见光近红外光谱仪（VNIS）用于热辐射特性研究，获得了月球在微尺度上的热辐射特性，并对光谱进行了热校正，相关成果发表在Geophysical Research Letters。

    吴昀昭研究员首次在嫦娥三号光谱数据发现有热辐射存在（Wu and Hapke, 2018）。嫦娥四号第一月昼光谱数据证实了该发现，第十月昼定点测量给出了更多的观测支持。图1可见，2μm后光谱抬升随着太阳升高而逐渐加强，随着太阳下沉而逐渐降低。该发现一方面有助于正确解译光谱数据，另一方面拓展了光谱仪应用，不仅可用于研究矿物，还可用于研究月球的热辐射。该研究表明即便在2 μm且中纬度地区的矿物反演研究也需要进行热校正。

     即便纯热辐射区，温度与发射率的求解也是欠定方程，而中红外既存在反射又存在热发射，温度求解更为复杂。研究发现，除了物质成分外，热辐射特性受微尺度粗糙度显著影响（图2）。除了相角，观测与入射相对方位角的影响非常明显（图3）。获得了嫦娥四号月壤微尺度地形双向粗糙度斜率为22° – 24°。

过去对月表温度特性的研究主要是宏观卫星遥感数据，波长上是热红外波段。本研究首次开展了微观尺度和短波方面的月壤热辐射特性研究，对于中红外研究具有重要意义。本次研究所用谱段存在太阳反射与月球自身热辐射叠加，光谱解析及应用存在较大困难，是研究相对较少的光谱区。而中红外谱段非常有用，水、OH、有机质、矿物在中红外有判断性光谱特征，是探测地外生命物质的关键谱段。

科学成果来自：中国科学院紫金山天文台吴昀昭研究员团队

Images and visuals are from Weibo CNSA –China National Space Administration –CLEP- China Luna Exploration Program..

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #January2021|#西昌衛星發射中心 # Xichang Satellite Launch Center – Successfully launching the iconic #LongMarch3B #ChangZheng3B #CarrierRocket to deploy the #Tiantong1 #satelliteMobileCommunication system…..

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On  the 20th January 2021 Wednesday early mid-morning  CNSA _China National Space Administration -China – People’s Republic of China At 0:25 Hong Kong –Beijing Time on an early morning past midnight of  January 20th , 2021, China successfully launched the Tiantong-1 03 satellite using the Long March 3B carrier rocket at the Xichang Satellite Launch Center Sichuan Province  Lift off. The satellite successfully entered the scheduled orbit, the mission was a complete success, and China’s space launch has a good start in 2021…..

The Tiantong-1 satellite mobile communication system is a satellite mobile communication system independently developed and constructed by my country. It consists of a space segment, a ground segment and user terminals. The Tiantong-1 03 satellite was developed by the China Academy of Space Technology. After being launched into orbit, it will form an integrated world-earth mobile communication network with the ground mobile communication system. Users in most waters of the Indian Ocean provide mobile communication services such as all-weather, all-day, stable and reliable voice, short message and data. This mission is the 358th space flight of the Long March series of carrier rockets.

  During the launching Xi’an Satellite Measurement and Control Center Xiamen Observation and Control Station successfully completed the Tiantong-1 03 satellite launch measurement and control mission] “Xiamen found the target!” “Xiamen telemetry signal is normal!” January 20, 2021 0 At 25:25, the China-developed Tiantong-1 03 satellite carrying the Long March 3B carrier rocket was launched at the Xichang Satellite Launch Center, and the satellite successfully entered the scheduled orbit. Soon after the rocket lifted off, the Xiamen Observation and Control Station located on the southeast coast found the captured target in time, and continuously transmitted the rocket telemetry data to the Xi’an Satellite Observation and Control Center, successfully completing the launch measurement and control mission. This is the first space launch measurement and control mission completed by the station in 2021….

As well to other tracking  mobile installations .. Yuanwang 5 ship successfully completed the Tiantong-1 03 satellite marine monitoring and control mission] Early this morning, my country successfully launched the Tiantong-1 03 satellite into the air with the Long March 3B carrier rocket at the Xichang Satellite Launch Center. The Yuanwang 5 ship under the T&C Department took part in a single-ship test in the scheduled waters of the Pacific Ocean to provide key monitoring and control support for rockets flying into the sky and satellites into orbit. The China Satellite Maritime Department successfully achieved its first maritime measurement and control mission in 2021. It is understood that after completing this mission, the Yuanwang 5 ship will continue to go to the next sea area for measurement and control, and the crew will welcome the arrival of the Spring Festival at sea…..

Images and visuals are from Weibo..