Tag: moon landings

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #CLEP #February2022 | #VonKarmanCrater #LunarMission #Change4 #Yutu2 Lunar adventuring #LunaExploration recently discovered explorationally of macroscopic translucent glass globules Stalagmite detected..

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As of Month of January  2022, The CNSA –China National Space Administration CLEP- China Lunar Exploration Program  Belt and Road Initiative Lunar Mission……Chang’e-4 with Yutu two the Lunar rover still working exploring more than 1003.9 meters on the other side of the moon on the 103 Kilometers Diameter Von Karman Crater in which is least than two length by length fifty five Kilometers Hong Kong –Macau- Zhuhai Bridges …. Working Exploring the Crater on the other side of the Moon Chang’e Luna….

On the 19th February 2022 week Hong Kong SAR – Beijing Time CNSA CLEP – China National Space Administration –China Lunar Space Program has released the 23rd batch of scientific data released by Chang’e-4 this month’s data came relatively late, but the content is very rich. More than 240 photos include more than 30 color photos. The data collection time announced this time is during the day of the 27th month (2021.02.04~2021.02.19).

is in the last month day In , experts analysed a “milestone” shaped stone, which, in fact, wasn’t the only similarly shaped stone nearby. Just south of the “milestone”, there is another similar stone, which the driving team calls a “stalagmite”, the relationship between the two is marked in Figure 1 (map from Chapter 27 of the Driving Diary). The focus of this moon and day detection is on this “stalagmite”, and the specific process is full of twists and turns. It is recommended that you read the original text of “Driving Diary”. Data source: Lunar and Planetary Data Release System

At 4:32 on February 6 2022 Hong Kong SAR- Beijing Time, Yutu-2 successfully woke up and entered the 27th lunar day, during which it spent its third Spring Festival on the moon.

Last month, we detected the “milestone” rock. Once the news came out, it attracted the attention of scientists all over the world. Dan Moriarty, a researcher at NASA, said: “This rock sample has Similar to the shape of a shark fin, it’s definitely unusual. ” He said that both the shape of the shark fin, and the apparent bulge near the edge of the rock, indicate a very young geological age and a relatively short existence at the site where it was found. Clive Neal, a famous lunar expert at the University of Notre Dame in the United States, also expressed his views on the rocks. While the “milestone” has attracted the attention of the international aerospace science community, Chinese scientists are gradually unravelling the mystery of its identity.

Strange discoveries always come in pairs. Last month, the pilots found a “stalagmite” shaped stone standing in the south direction, similar to the “milestone” shape. The two echoed each other. Everyone decided to act immediately and explore again. “Stalagmite”.

The rhythm of the whole moon, day and morning was tight and orderly. After three moves, Yutu No. 2 arrived near the “stalagmite” before noon on the moon. At this time, the shadow of the car body blocked the target, and it seemed to persuade Yutu to take a nap and explore the “stalagmite” again. , we had to wait for the Yutu to wake up from the lunch break to continue the probe.

Under the scorching sun, Jade Rabbit spent its Spring Festival, and before the fifth day of the first lunar month, it started work early in the day and afternoon. The pilots controlled Yutu-2 to turn to the intended detection heading. According to the previous ground planning path deduction, the road detected at this time is flat, and the bright surface of the “stalagmite” should be able to enter the infrared field of view. However, the obstacle-avoidance images downloaded to the ground are full of artistic “alternation of light and dark”, which is different from the “simple and straightforward” that scientists hoped to be completely illuminated by sunlight.

There are so many exciting moments in lunar exploration. It is within reach, but it seems to be so far away. However, the pilots have been very patient in the long-term detection, and proposed three detection plans for the current situation: go straight ahead, detour to the southwest side of the “stalagmite”, and detour to the southeast to wait for next month’s detection.

Here are a few photos synthesized from the original images:
Figure 2: Color photos of the “Milestone” taken from a distance
Figures 3 and 4: The lunar image taken by Yutu-2 to the “Stalagmite” (you find the Chang’e-4’s photo) Is the lander yet?)
Figure 5: A close-up photo of the “stalagmite”

After repeated deductions and demonstrations, the last plan was not very feasible and was first excluded, and the remaining two plans entered the final PK. Drivers detour from the west side and the southeast side to verify the feasibility of the second option. Detouring from the southeast, there are many potholes along the way. After starting, Yutu No. 2 will step into the pit, which is more dangerous; while the west side seems to be flat along the way, but there is a large impact crater near the end position. Yutu No. 2 The No. 1 can only move around in a small area between the impact crater and the “stalagmite”. Not only is its range of activity severely limited, which may cause the solar wings to be blocked, but it must also return to the original path after detection, which is laborious and dangerous. After several rounds of calculation and demonstration, direct detection wins.

The pilots controlled the Yutu for the first attempt. The preliminary results show that the actual infrared field of view is about 4 cm away from the ideal field of view. The second time, everyone adjusted according to the suggestions of the scientists and tried again, but the results were still biased. The two failed attempts, and the time was approaching zero, and the station resources were almost exhausted. Facing the temptation of the mystery behind the moon, the pilots were still reluctant to give up and decided to try again. They urgently extended the measurement and control arc for an hour, adjusted the posture of the jade rabbit and probed again. With all the hard work, the images uploaded this time show that the infrared field of view finally accurately covers the narrow light of the “stalagmite” !

Those who travel a hundred miles are half and ninety. When it is unknown whether success or failure will come next time, persevering may be our only chance. This time Yutu No.2 and the pilots did it! Next time, would you like to challenge and persevere for your dreams?

Images and visuals are from CNSA- China National Space Administration also from their respectives…

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #January2021| #CCTV9 #ChinaCentralRadioandTelevision #CLEP #ChinaLunarExplorationProgram The Chinese lunar exploration project series documentary “Our Journey” broadcasting on  24th December 2021 collection..

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中国空间站 On currently on 24th to 26th  December 2021 Christmas eve, CNSA –China National Space Administration  in collaboration with CCTV9 China Central Radio and Television will telecast  “Our Journey” is the first panoramic documentary produced by China National Space Administration and China Central Radio and Television in 4 years to show the complete course of China’s lunar exploration project in 17 years . It is a documentary. Documentary works with international vision, international expression, and international standards are excellent works that tell Chinese stories, spread space culture, and popularize space knowledge

The documentary consists of three episodes, each of 50 minutes, which truly presents the development of China’s lunar exploration project over the past 17 years, which has been through ups and downs, and left a tortuous but full history. This imprint records not only a huge and complicated super project, but also a testimony to the rapid growth of China’s aerospace industry and the common progress of the Chinese nation. The film fully and vividly interprets the spirit of lunar exploration of “chasing dreams, exploring courageously, coordinating fortifications, and win-win cooperation” , promotes the spiritual pedigree of the Chinese Communists , and conveys the spiritual power that China’s scientific and technological development and progress rely on.

 Through character interviews, important development scenarios, and the combined application of various methods such as related materials, the film outlines the continuous and staggered cooperation and support between the various development units of the major systems, and demonstrates the Chinese people’s fearlessness in scientific exploration. Pursuit, as well as the admirable courage and wisdom devoted to this journey full of risks and challenges.

“Our journey” documentary will be held December 24 – the 26th in the Central Radio and Television CCTV-9 record channel 20:00 prime time heavy launch a new media center video, CCTV and other platforms will also be broadcast simultaneously.

Images and visuals are from their respectives.

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #December2021| #CCTV9 #ChinaCentralRadioandTelevision #CLEP #ChinaLunarExplorationProgram The Chinese lunar exploration project series documentary “Our Journey” will be broadcast 24th December 2021 that’s tomorrow!

kevinjamesngLeave a comment

中国空间站 On currently on 24th to 26th December 2021 Christmas eve, CNSA –China National Space Administration  in collaboration with CCTV9 China Central Radio and Television will telecast  “Our Journey” is the first panoramic documentary produced by China National Space Administration and China Central Radio and Television in 4 years to show the complete course of China’s lunar exploration project in 17 years . It is a documentary . Documentary works with international vision, international expression, and international standards are excellent works that tell Chinese stories, spread space culture, and popularize space knowledge

The documentary consists of three episodes, each of 50 minutes, which truly presents the development of China’s lunar exploration project over the past 17 years, which has been through ups and downs, and left a tortuous but full history. This imprint records not only a huge and complicated super project, but also a testimony to the rapid growth of China’s aerospace industry and the common progress of the Chinese nation. The film fully and vividly interprets the spirit of lunar exploration of “chasing dreams, exploring courageously, coordinating fortifications, and win-win cooperation” , promotes the spiritual pedigree of the Chinese Communists , and conveys the spiritual power that China’s scientific and technological development and progress rely on.

 Through character interviews, important development scenarios, and the combined application of various methods such as related materials, the film outlines the continuous and staggered cooperation and support between the various development units of the major systems, and demonstrates the Chinese people’s fearlessness in scientific exploration. Pursuit, as well as the admirable courage and wisdom devoted to this journey full of risks and challenges.

“Our journey” documentary will be held December 24 – the 26th in the Central Radio and Television CCTV-9 record channel 20:00 prime time heavy launch a new media center video, CCTV and other platforms will also be broadcast simultaneously.

Images and visuals are from their respectives.

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #December2021 | #嫦娥五号The #Moon #Change5 probe its Heroic #LunarMission from #MonsRumker #LunaExploration #Review of the first anniversary of the Chang’e 5 mission-returning home safely …..

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Review of the first anniversary of the Chang’e 5 mission-returning home safely

One year ago today 24th November 2020 Now it’s the 24th November 2021 , the Chang Zheng – Long March Five Carrier Rocket Launched away  in CNSA – China National Space Administration China Wenchang spaceport launch, Change Five  Lunar probe into orbit, opened up towards China – People’s Republic of China’s first celestial bodies sample return trip from Mons Rumker on the Lunar Surface.……  

​​At 23:10 on December 3, 2020, the Chang’e-5 ascender carried a lunar sample to take off from the lunar surface. About 6 minutes later, it entered an elliptical orbit around the moon. At 2:13 on December 6, the ascender accurately reached the scheduled “handover” position 50 kilometers in front of the orbit-return assembly and about 10 kilometers above it. At 5:42, the ascender and the orbit-returning assembly completed the rendezvous and docking. At 6 o’clock, the sample packaging container was transferred from the ascender to the returner. This process of autonomous rendezvous and docking and sample transfer is like the handover process in a 100-meter relay race. It is brilliant and highly technical. Using a lunar orbital rendezvous and docking after take-off from the lunar surface, rather than a direct lunar-to-ground transfer after taking off from the lunar surface, this design is conducive to collecting and carrying more samples back to the earth, and for technical accumulation and verification for subsequent missions.

After the Chang’e-5 probe undergoes a lunar-to-earth transfer, the returner and the orbiter are separated and transferred to the return re-entry section, using a semi-ballistic jump type, that is, a “drifting” return method. After two re-entry into the atmosphere, it decelerates in Beijing. At 1:59 on December 17, 2020, the returner successfully landed in the planned area of ​​Siziwang Banner, Inner Mongolia, marking the successful completion of my country’s first extraterrestrial celestial body sampling and return mission.

At about 1 am on the 17th, the Beijing Aerospace Flight Control Center injected high-precision navigation parameters into the Chang’e-5 orbiter and returner combination through the ground measurement and control station. After that, the orbiter and the returner were normally unlocked and separated at a height of about 5,000 kilometers above the sea level of the South Atlantic Ocean, and the orbiter completed the evasive maneuver as planned. At 1:33 in the morning, the Chang’e-5 returner entered the earth’s atmosphere at a high speed close to the second cosmic speed (about 11.2 kilometers per second) at a height of about 120 kilometers above the ground, and performed the first aerodynamic deceleration. After descending to a predetermined altitude, the retractor jumps up out of the atmosphere and begins to slide down after reaching the highest point. After that, the returner enters the atmosphere again and performs a second aerodynamic deceleration. When descending to a height of about 10 kilometers above the ground, the retractor opened the parachute to complete the final deceleration and maintain a stable attitude, and then landed smoothly in the predetermined area.

During the 30-second parachute opening process, a total of 3 work phases were completed. A series of actions were completed to open the parachute with the flip cover, decelerate the deceleration parachute, pull out the main parachute by the deceleration parachute separation, open the parachute like a closed main parachute, and fully open the main parachute and descend steadily. The work of the recovery system is interlocked. Any mistake will cause the catastrophic consequences of the hard landing of the returner. All the work links cannot be controlled and adjusted from the ground. The recovery system needs to complete these accurately and reliably in such a short time. The action ensures that the returner can safely land at the predetermined location.

Before welcoming the return of Chang’e 5 at the Siziwangqi landing site, a snowfall also arrived as expected, putting a layer of “dress” on the landing site and also brought great difficulty to the search and recovery of the mission. In order to ensure this mission, the search and recovery brigade of a certain base that performed the search and recovery mission organized several rounds of search and recovery exercises under extreme weather conditions such as “extreme cold, dark night, and freezing”. In the end, the search team arrived at the landing site about half an hour after landing and successfully completed the mission. Chang’e 5 obtained a total of 1,731 grams of lunar samples, which is also in line with the characteristics of China’s lunar exploration project. It took 17 years and went through three steps of “circumnavigating, descending, and returning” to draw a blueprint for China’s lunar exploration.

Reaching the moon in nine days, sailing shining galaxy;

Dream set sail, we walk along the way!

Looking forward to the next highlight of China’s lunar exploration project!

视频制作：侯军 海报：石萌
文：刘然 戚铁磊

#CNSA #ChinaNationalSpaceAdministration #国家航天局 |#BeltAndRoadinitiative #December2021 | #嫦娥五号The #Moon #Change5 probe its Heroic #LunarMission from #MonsRumker #LunaExploration #Review The third anniversary of the first anniversary of the Chang’e 5 mission series-space rods#ChangZheng5 …..

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One year ago today 24th November 2020 Now it’s the 24th November 2021 , the Chang Zheng – Long March Five Carrier Rocket Launched away  in CNSA – China National Space Administration China Wenchang spaceport launch, Change Five  Lunar probe into orbit, opened up towards China – People’s Republic of China’s first celestial bodies sample return trip from Mons Rumker on the Lunar Surface.……  

​​At 23:10 on December 3, 2020, the Chang’e-5 ascender carried a lunar sample to take off from the lunar surface. About 6 minutes later, it entered an elliptical orbit around the moon. At 2:13 on December 6, the ascender accurately reached the scheduled “handover” position 50 kilometers in front of the orbit-return assembly and about 10 kilometers above it. At 5:42, the ascender and the orbit-returning assembly completed the rendezvous and docking. At 6 o’clock, the sample packaging container was transferred from the ascender to the returner. This process of autonomous rendezvous and docking and sample transfer is like the handover process in a 100-meter relay race. It is brilliant and highly technical. Using a lunar orbital rendezvous and docking after take-off from the lunar surface, rather than a direct lunar-to-ground transfer after taking off from the lunar surface, this design is conducive to collecting and carrying more samples back to the earth, and for technical accumulation and verification for subsequent missions.

Aspect 1-chase in space

Both the ascender and the orbit-back assembly fly around the moon, but the orbital heights are different. The ascender runs on the outer track at a height of 210 kilometers, and the orbit-back assembly runs on the inner track at a height of 200 kilometers. The distance on the inner track is short, the track-back assembly runs slightly faster, and the ascender on the outer track runs slower. In order to realize the “transfer bar”, the rail-back assembly needs to raise the rail in the height direction and gradually approach the ascender in the front and rear direction. When approaching a certain distance, the orbit-back assembly will autonomously control the engine to change the direction of travel and take a shortcut to catch up with the ascender. During the entire chase process, multiple anchor points are set up, and the orbit-return assembly stops to keep the relative position unchanged, conducts a state inspection, and ensures that the measurement and control conditions meet the requirements during docking.

Picture: Lunar orbital rendezvous and docking flight phase division. (Source: Xu Yang, Ma Lin, Liu Tao, etc. Chang’e 5 Lunar Orbital Rendezvous and Docking Guidance, Navigation and Control System. Science in China: Technological Sciences, 2021, 51: 788–798)

 Aspect 2-“High-precision measurement” + “Know yourself and the enemy”

During the rendezvous and docking process, it is necessary to make the orbit-return assembly and the ascender know the relative position, speed and attitude of each other. For this reason, a variety of sensors for relative measurement are configured to realize relative navigation. When the distance is 100 kilometers, the microwave radar starts to work. It not only provides the relative motion parameters of the two devices according to the traditional radar “call and answer” mode, but also upgrades to the “dialogue exchange” mode, between the orbital assembly and the ascender. Two-way transmission of remote control commands and telemetry parameters. At a distance of 20 kilometers, lidar “comes on the scene” to provide higher-precision measurement information. At about 100 meters, the optical sensor began to show its talents to achieve close distance and attitude measurement. These sensors are relayed to each other over the working distance and covered and connected, so as to ensure that there are at least two different systems of sensors available at any distance, so that the orbit-back assembly can be seen more accurately, the measurement is more precise, and the system is more reliable. 

Aspect 3-precise “handover baton” from 380,000 kilometers away

The weight of the orbit-return assembly is more than 2 tons, but the mass of the ascender is only one-sixth of its mass. If the traditional collision docking is used, it is very easy to cause the ascender to be knocked into flight. For this reason, a claw-type catching and docking mechanism is specially designed. Each pair of claws is like two arms, which are quickly closed within 1 second to form a closed space, and the passive lock handle of the ascender is firmly restrained inside. Can’t escape. It has to be accurate, and the accuracy requirement after docking is better than 0.5 mm, which is like “threading a needle” in space. The use of 3 sets of claw mechanism star-shaped circumferential layout and self-centering design realizes the automatic centering of the two aircraft after docking, and realizes the lightweight design while ensuring high-precision docking.

The design of the transfer mechanism is also very clever. In order to realize the transfer of long-stroke sample containers of more than six hundred millimeters, the designers found inspiration from the inchworm. Based on the principle of movement stroke amplification + relay transfer, they proposed a relay mechanism for imitating the inchworm. The simple circular expansion and contraction movement of the parallel link can realize the continuous movement of the object. The entire transfer process is like the movement of a caterpillar, stretching and shrinking, continuously advancing.

​​2020年12月3日23时10分，嫦娥五号上升器携带月球样品从月面点火起飞，约6分钟后，进入环月椭圆轨道。12月6日2时13分，上升器准确到达轨返组合体前方50公里、上方约10公里的预定“交班”位置。5时42分，上升器与轨返对合体完成交会对接，6时，样品封装容器从上升器转移到返回器中。这个自主交会对接和样品转移过程就好像百米接力赛中的交接棒过程，精彩纷呈，技术含量极高。采用从月面起飞后进行一次月球轨道交会对接，而不是从月面起飞后直接月地转移，这样的设计有利于采集和携带更多样品返回地球，并为后续任务进行技术积累和验证。

看点1——太空中的追逐

上升器和轨返组合体都在环月飞行，但轨道高度不同，上升器在210公里高的外道跑，轨返组合体在200公里高的内道跑。内道路程短，轨返组合体跑得稍快一些，外道的上升器则跑得要慢一点。为了实现“交接棒”，轨返组合体需要在高度方向上抬高轨道，并且在前后方向上逐渐逼近上升器。当接近到一定距离时，轨返组合体会自主控制发动机来改变行进方向，抄近道赶上上升器。整个追逐过程设置多个停泊点，轨返组合体停下来保持相对位置不变，进行状态检查，并确保对接的时候测控条件满足要求。

 看点2——“高精测量”+“知己知彼”

在交会对接过程中，需要让轨返组合体和上升器清楚彼此的相对位置、速度和姿态，为此配置了多种进行相对测量的敏感器，用来实现相对导航。在相距100公里的时候，微波雷达开始工作，既按照传统雷达的“点名答到”模式提供两器的相对运动参数，还升级到“对话交流”模式，在轨返组合体和上升器之间双向传输遥控指令和遥测参数。在相距20公里的时候，激光雷达“登场”，提供更高精度的测量信息。而到了100米左右，光学敏感器开始大显身手，实现近距离的距离和姿态测量。这些敏感器在作用距离上彼此接力又有覆盖衔接，从而确保在任意距离上至少有两种不同体制的敏感器可用，使得轨返组合体看得更准，测得更精，系统更加可靠。 

看点3——38万公里之外的精准“交接棒”

轨返组合体重达2吨多，上升器质量却只有它的六分之一，如果采用传统的碰撞式对接，极易导致上升器被撞飞。为此，专门设计了抱爪式抓捕对接机构，每对抱爪犹如两只手臂，在1秒内快速合拢形成闭合空间，将位于上升器的被动锁柄牢牢地约束在内部，再也无法逃脱。对得上还得对得准，对接后的精度要求优于0.5毫米，好比在太空“穿针引线”。采用3套抱爪机构星型周向布局、自定心设计，实现了两飞行器对接后的自动对准中心，在保证高精度对接的同时实现了轻量化设计。

转移机构的设计也很巧妙。为了实现六百多毫米的长行程样品容器转移，设计师们从尺蠖的身上找到了灵感，基于运动行程放大+接力转移的原理，提出了一种仿尺蠖大展收接力式机构，通过多级并联连杆的简单循环展收运动，就可以实现物体的连续移动。整个转移过程如同毛毛虫的运动，一伸一缩、不断前进。

作者：王琼  胡震宇 于丹 戚铁磊​​​​

Images and visuals are from Weibo and their respectives…. Of CNSA China National Space Administration …