On 20th May 2022 1830 Hours Hong Kong SAR- Beijing time , the Belt and Road InitiativeCNSA –China National Space Administration launching from Jiuquan Satellite Launch Center – Inner Mongolia –China – People’s Republic of China, successfully deployed three Communications Satellites with the Chang Zheng – Long March 2C carrier rocket on the satellite successfully entered the predetermined orbit….
China – People’s Republic of China successfully launched three low-orbit communication test satellites At 18:30 on May 20, 2022, Beijing time, China launched the Chang Zheng – Long March 2C carrier rocket yao 53 carrier rocket at the Jiuquan Satellite Launch Center. Deploying the three satellites At the upper level of the fifth stage, three low-orbit communication test satellites were successfully sent into the scheduled low-Earth orbit in the way of “one carrier rocket and three satellites”, and the launch mission was a complete success.
The low-orbit communication test satellites launched this time are mainly used for on-orbit communication technology test verification. Two of them are developed by Changguang Satellite Technology Co., Ltd. and the other is developed by the Fifth Academy of China Aerospace Science and Technology Corporation.
Chang Zheng – Long March 2C carrier rocket will also perform a launch mission in Xichang in the near future This year, the Chang Er C rocket will be transferred to multiple launch centers for high-density launches. According to Li Jun, the chief designer of the Chang Zheng – Long March 2C carrier rocket, the development team is currently working in Jiuquan and Xichang. A launch center performs the launch mission.
As a “Gold Medal Veteran”, the Chang Zheng – Long March 2C carrier rocket has mature technology and a stable state, but the development team is not satisfied with this, and always adheres to the sense of innovation, so that the rocket’s capabilities from the overall to the system, design and simulation verification have been significantly improved. Especially in recent years, the Chang Zheng – Long March 2C carrier rocket has successively applied the two-way correction of the ballistic high-altitude wind, the quasi-real-time secondary compensation before the launch, and the active load shedding control, which significantly reduces the aerodynamic load in flight and improves the flight safety and launch probability. , which can better cope with high-density emission requirements.
The Rocket Academy has also planned in advance to allocate resources closely around the successful launch, so as to realize the allocation of products between tasks and models and the reuse of personnel in the launch center. For example, in the Jiuquan Satellite Launch Center, the Chang Zheng – Long March 2C carrier rocket and Chang Zheng –Long March 2F Carrier rockets were launched in parallel. The two team’s reused personnel from multiple positions including the control and command post, which effectively reduced the number of personnel entering the site.
The Rocket Academy has also planned in advance to allocate force resources closely around the successful launch, so as to realize the allocation of products between tasks and models and the reuse of personnel in the launch center. For example, in the Jiuquan Satellite Launch Center, the Chang 2 C and Chang 2 F rockets were launched in parallel, and the two teams reused personnel from multiple positions, including the control and command post, which effectively reduced the number of personnel entering the site.
In the face of a more compact production test cycle, the R&D team completely eliminated the time loss of “idling” through the “transparency” of the product matching process, and comprehensively applied and continuously iteratively optimized the integrated documents in the final assembly and final test process to achieve quality. Control one-time alignment in place to ensure high-quality launch
This mission is the fourth launch of the upper stage of Expedition 1 S. The previous three launches were on October 9, 2018, August 24, 2021, and November 3, 2021. This launch is the 421st launch of the Long March series of carrier rockets.
On an interesting day of 7th May Saturday 2022 in Hainan Province –China –People’s Republic of China…. Clear Day in the district area of the Wenchang – Wenchang Spacecraft launch center in which the awesome team at one of many CNSA –China National Space Administration that China National Space Administration………….. Finally assembly of the arrived Chang Zheng 7 Long March Carrier Rocket Yao 5 finally assembled at the VAB Vertical Assembly Building previously arrivingly at Wenchang Spacecraft launch site According to the latest news from the China Manned Space Engineering Office, the Chang Zheng- Long March 7 Yao-5 carrier rocket for the Tianzhou-4 launch mission has completed all the research and development work before leaving the factory and is safe today Arrived at Wenchang Space Launch Site. After that, the Long March 7 Yao 5 carrier rocket will carry out the final assembly and testing of the launch site area together with the Tianzhou 4 cargo spacecraft that has arrived earlier. At present, the facilities and equipment of the launch site are in good condition, and the systems participating in the test are preparing for various tasks in an orderly manner.
[Officially announced that the chief designer of the Long March 9 is Yang Hujun] Yang Hujun, born in 1974, has participated in the model development for more than ten years as the deputy chief designer of the Long March 5 and Long March 5 B rockets since the Long March 5 rocket project was established. Important contributions have been made in key rocket technology research, overall design, first flight and the complete success of the remote 3 to 5 missions, the technology of the remote 2 mission has been reset to zero, the overall model and the technology of each sub-system have been mastered.
In 2020, Yang Hujun became the chief designer of the Long March 9 heavy-duty launch vehicle, and is now mainly responsible for key technical research, in-depth demonstration of plans, overall design, and technical mastery of each sub-system. The Long March 9 is a heavy-duty launch vehicle with a larger take-off scale, stronger carrying capacity, higher complexity and greater difficulty in development than the Long March 5. It is a necessary guarantee for significantly improving the overall level of national aerospace science and technology and the comprehensive strength of engineering technology. , is a powerful guarantee for enhancing national self-confidence and enhancing international competitiveness
天州Tianzhou 4 cargo spacecraft will launch soon as it’ s been transfer to the Launch Complex in ready to According to the China Manned Space Engineering Office, on May 7, 2022, Beijing time, the Tianzhou 4 cargo spacecraft and the Long March 7 Yao-5 carrier rocket will be vertically transported to launch area. At present, the facilities and equipment of Wenchang Space Launch Site are in good condition, and various functional inspections and joint tests before launch will be carried out as planned….
WITNESS WITH WENCHANG Spacecraft Launch Center 2022 This year, the first launch of China’s space station in orbit will be carried out at Wenchang Spacecraft Launch Center in the swirling coconut forest. As the “youngest” among the four major launch sites in China, she has a long history and an extraordinary mission of the times. She witnesses this era together with us ….
International Labor Day , also known as “May 1st International Labor Day” and ” International Workers’ Day ” (International Workers’ Day or May Day), is a national holiday in more than 80 countries around the world. Set on May 1st of each year. It is a festival shared by working people all over the world.
In July 1889, the Second International, led by Engels, held a congress in Paris. The meeting passed a resolution stipulating that the international labourers would hold a parade on May 1, 1890, and decided to designate May 1 as International Labor Day. The Government Affairs Council of the Central People’s Government made a decision in December 1949 to determine May 1 as Labor Day. After 1989, the State Council has commended national model workers and advanced workers basically every five years, with about 3,000 commendations each time.
On October 25, 2021, the ” Notice of the General Office of the State Council on the Arrangement of Some Holidays in 2022″ was released, and there will be 5 days off from April 30, 2022 to May 4, 2022. April 24 (Sunday) and May 7 (Saturday) for work……
As part of the International Workers Day – Labour Day Every space probe’s name is a poem# Go to Kyushu; ask the sky, cross the sea of stars. The chief designers of “Tianwen No. 1”, “Chang’e No. 4”, “Beidou Satellite”, “Magpie Bridge Relay Star”, “Xihe Satellite” and the manned spacecraft system gathered at CCTVMay Day Evening, the vast universe, the journey Long, heart to the stars, the glory comes again, pay tribute to the Chinese Space engineers, Scientist and Takionauts whole work within the China’s Space and Aerospace industry.
OnCNSA –China National Space Administration celebrated On the first of May 2022 it is Labor Day, “Chang’e” and “Tianwen” extend May Day greetings to everyone! (China Lunar Exploration Project) ”Chang’e” and “Tianwen” extend May 1 holiday greetings to everyone China Aerospace Science and Technology Corporation with a series of posters design by Poster design: Shi Meng
May 1st LabourDay Let’s see the “model workers” in the Chang Zheng Long March family From manned spaceflight to Chang’e lunar exploration, from Beidou networking to building a dream space, every progress in China’s aerospace industry is inseparable from the take-off of the Long March rocket . Let’s learn about the “model worker” rocket developed by the General Manager of the First Academy of Air China. Which of them is the “model worker rocket” in your heart? (No. 1 and No. 1 of Aerospace Science and Technology Group)
On 24th April 2022, China- People’s Republic of China- CNSA –China National Space Administration throughout the China- People’s Republic of China in which on that Day it’s China National Space Day in which it is the sixth China National Space Day in which there’s promotional events across the whole nation.. in which this week there’s promotional release themes on the previously hard working campaigns in space collaboratively in which features many successfully accomplishments in between various sectors among with governmentally to commercially industrial innovative designs of space ..
Long March 9 is a Chinese super-heavy carrier rocket concept that is currently under development. It is the ninth iteration of the Chang Zheng Long March Series Carrier rocket family, named for the Chinese Red Army’s 1934–35 Long March campaign during the Chinese Civil War against the illegal KMT Republic of China government…. During the Space Day of China or中国天文日China Space Day 2022 celebrating there was massive celebrationally events across the China- People’s Republic of China. The newly advancement of the Chang Zheng – Long March Nine Ultra Heavy Carrier Rocket has undergone many design generationally evolutions in the final approach that is with a cluster of ten more engines in which the new design arrangement configuration which is thicker durable taller with that the Chang Zheng – Long March Nine Ultra Heavy Carrier Rocket can be Reusable- reused..
The Chang Zheng Long March 9 Ultra Heavy Carrier- Reusable Rocket has a new polished rod configuration, with a thickness of 11 meters and a height of 111 meters or more, adding 10 new engines….Long Lehao is the chief designer and general consultant of the launch vehicle series of the China Academy of Launch Vehicle Technology, an academician of the Chinese Academy of Engineering, and the deputy chief designer of the lunar exploration project. On March 23, my country’s seventh “China Space Day”, Academician Long Lehao and a number of authoritative figures in the aerospace field were invited to the School of Astronautics of Beijing Institute of Technology. At the first report meeting, Academician Long Lehao gave a lecture on aerospace knowledge and communicated with teachers and students. During this period, he announced the latest design plan of the Long March 9, which quickly attracted widespread attention.
Many friends know that Academician Long announced a new configuration plan of the Chang Zheng Long March 9 when he visited the University of Hong Kong just last year. It is often called “21 version of Chang Zheng Long March 9 (2021 version)” on the Internet. The new version released this year is basically the same. Yu overthrew last year’s version, so what about this 22nd version (2022 version) Long March 9? Let’s take a look first.
The picture above is the PPT picture of the evolution of the configuration of the Long March 9 rocket announced by Academician Long Lehao during his visit to the University of Hong Kong in 2021. The far right is the 2021 version of the Long March 9.
The picture above shows the latest version of the Long March No. 9 PPT screen released by Academician Long Lehao at Beijing Institute of Technology on April 23 this year.
According to the composition and data of the 22nd version of Chang Zheng Long March 9, which appeared in Academician Long’s PPT presentation, this latest version of the Long March 9 continues the 21st version of the bare rod without booster configuration, but it is thicker and longer than the 21st version. Now, the core stage of the latter has a diameter of 10.6 meters, while the diameter of the 22 Chang Zheng Long March 9 has reached 11 meters, and both the first and second stage rockets are 11 meters in diameter, which is larger than the Saturn V used by the United States to land on the moon. (The diameter of the first stage is 10.1 meters) and it is nearly 1 meter thicker, which is also thicker than NASA’s SLS super-heavy rocket (the first stage of the rocket core stage is 8.4 meters in diameter) and Musk’s starship (9 meters in diameter). If it is successfully developed, it can be called the thickest rocket in history.
The picture above shows the size comparison of the three Long March 9 rockets and my country’s “Hainan” amphibious assault ship. The third from the left is the 2021 version of the Long March 9.
In terms of the diameter of the rocket, this is actually at least the third time that the Chang Zheng Long March 9 plan has become thicker. The design plan of the Long March 9 launched in 2011 has a diameter of 9.5 meters (another 4 boosters). It is 10.6 meters, and this year it has become 11 meters. It can be said that it is getting thicker and thicker.
However, the configuration of this rocket is not only thick, but also magical. When the second-stage rocket transitions to the third-stage rocket, it suddenly shrinks to a diameter of 7.5 meters, but when it reaches the fairing, it suddenly thickens to a diameter of 10 meters. The shape of the third stage to the fairing is like a waist gourd, which is very strange.
The height of the 22nd version of Chang Zheng Long March 9 has also changed, and it has become taller! The total length has reached 111 meters, which is comparable to the height of a 37-story building, 0.4 meters higher than Saturn 5, and 13 meters higher than NASA’s SLS rocket (98 meters in height for the manned version). It is 103 meters, and the height of the 2021 version of Chang Zheng Long March 9 is 108 meters, and now it has increased by 3 meters, and the height is constantly being refreshed.
The far right side of the picture above is the 2021 version of the Long March 9. It can be seen that it is much larger than the 2011 version of the three different configurations of the Long March 9 on the right. The new version of the Long March 9 released this year is larger than the 2021 version, it is conceivable How amazing its physique should be.
Not only is it thicker and longer (or taller), it also has more rocket launches. In the key equipment components, the biggest change in the new configuration of the Long March 9 is its engine. The 2011 version of the Long March 9 design plan is equipped with four YF-130 liquid oxygen kerosene engines for the core stage rocket (a single thrust of about 480 tons) ,), each of the 4 boosters is equipped with 2 YF-130 liquid oxygen kerosene engines, so that the total thrust of the first-stage rocket can reach about 5,800 tons; The core three-stage rocket is equipped with four 25-ton YF-79 hydrogen-oxygen engines.
In the 2021 version of the Chang Zheng Long March 9plan, 4 boosters were abandoned, and the bottom of the core-level polished rod rocket was replaced with 16 YF135 liquid oxygen kerosene engines (a single thrust of about 370 tons). This design is similar to the original version. The thrust is the same, but the boosterless configuration becomes simpler, the aerodynamic efficiency is better, the weight is also reduced by 15 tons, and the launch efficiency is also improved.
The engines of the 2021 version of Chang Zheng Long March 9 second- and third-stage rockets have also been replaced. The core two-stage rocket has been replaced by 2 YF-90 hydrogen-oxygen engines with a thrust of 220 tons to four 120HO hydrogen-oxygen engines with a thrust of 120 tons. The ratio increased by 40 tons, and the core three-stage rocket was replaced by a 120HO hydrogen-oxygen engine from four 25-ton YF-79 hydrogen-oxygen engines, and the thrust was increased by 20 tons.
After such an improvement, the take-off weight of the rocket has been reduced by dozens of tons, and the carrying capacity and carrying efficiency have also been improved. The capacity of the low-Earth orbit has increased from 140 tons in the 2011 version of the Chang Zheng Long March 9 plan to 150 tons, the capacity of the Earth-Moon transfer orbit has increased from 50 tons to 53 tons, and the capacity of the ground-fire transfer orbit has reached between 45 and 50 tons. Load factor and load efficiency.
But the most eye-catching change in the 2022 version of the Long March No. 9 plan is the engine. First, the number of engines has increased, and 26 200-ton liquid oxygen methane engines are used, and there is no model for this engine, so it should not be a project. The thrust of such a first-stage rocket is 5,200 tons, which is lower than the previous two versions, about 700 tons, but the carrying capacity has not been reduced. The transfer rail carrying capacity is 50 tons.
As for why a liquid oxygen methane engine is used, it is because methane has many advantages over kerosene and liquid hydrogen. First, the storage temperature of methane and liquid oxygen is not much different. Methane is minus 161 ℃, and liquid oxygen is At minus 183°C, set up a refrigeration device to separate two spaces, and set them at different temperatures to store them together. However, the storage temperature of liquid hydrogen is minus 253°C, which is quite different, while kerosene can be stored at room temperature. Therefore, in terms of refrigeration, it is more troublesome to place liquid oxygen together with kerosene or liquid hydrogen. If the insulation is not done well, liquid hydrogen will freeze liquid oxygen to solidify, and liquid oxygen will freeze kerosene to solidification. , it is necessary to add a lot of necessary things or equipment, which increases the weight of the rocket and reduces the launch efficiency ratio.
Nowadays, liquid hydrogen and liquid oxygen engines are considered ideal, but in fact the density of liquid hydrogen is very low. The liquid hydrogen storage tank in the rocket is at least 5 times larger than the liquid oxygen storage tank. The huge storage tank also increases the weight of the rocket. The methane storage tank is similar in size to the liquid oxygen storage tank, so considering all aspects of data and characteristics, the liquid oxygen methane rocket is the best choice.
Moreover, this liquid oxygen methane engine is also the best choice for building a recyclable and reusable rocket. This is also the “Raptor” liquid oxygen methane engine that Musk must use to build the starship (the original thrust is 180 tons, and the upgraded version has a thrust of 250 tons) The reason for this, and the new version of the Long March 9 PPT picture released by Academician Long, the first design purpose of the program is “reusable” use, so this time the main focus is also the “reusable” function of Chang Zheng Long March 9.
The picture above shows the three “Raptor” liquid oxygen methane engines used on the starship.
Perhaps it is precisely because of the configuration of the liquid oxygen methane rocket and the various advantages of this engine that Academician Long Lehao updated last year’s design with the 2022 version of the Long March 9 plan announced this year. This liquid oxygen methane rocket is also a giant The most ideal choice for rockets, it can even be recycled and reused in the future, and if the design is in place, the thrust-to-weight ratio of this engine will be very ideal, which also allows the volume of the engine to be made very small, so the lower end of the first stage rocket can be used. Install a number of liquid oxygen methane engines.
The number of engines of our rocket is not fixed. There are 29 to 32 Raptor engines under the first stage of Musk’s starship, and a maximum of 37 engines can be installed, but its diameter is only 9 meters. If we can develop If there is a liquid oxygen methane engine with the same thrust-to-weight ratio as the “Raptor”, then the number of engines that can be installed under the first level of the 2022 Long March 9 is not only 26, so the 26 engines mentioned by Academician Long are likely to be the minimum basic The version, if it is opened, can even put 50 “Raptor” equivalent engines under the super rocket with a diameter of 11 meters, and the thrust can reach 10,000 tons. If it can achieve 1/3 of the thrust upgrade like the Raptor, the total thrust can even reach With a total thrust of 13,000 tons, the carrying capacity can be greatly increased by 1 to 3 times.
Of course, this is only an idea at present. my country’s Long March 9 super-heavy rocket was approved last year. The manufacturing plan is basically the 2011 version of Chang 9. The various components used have also been rolled off the assembly line. It is estimated that in the next few years The assembly will be completed one after another, and the first flight will take place before 2029 at the latest. It will be a major power in my country’s aerospace field in the new era.
The picture above shows the interstage ring of the Long March 9, which is under development, and has already begun to be manufactured.
The above picture shows the actual scale simulation of the Long March 5 rocket (small left) and the 2011 version of the Long March 9 rocket (large right).
But this does not mean that the new version of the Long March 9 will not be manufactured. What Long Lao proposed is an improved optimization plan. It is not only the digestion, absorption and re-innovation of the world’s advanced aerospace technology, but also represents the future development direction of my country’s aerospace industry. The two Chang 9 versions proposed by Long Lao in the past two years are both bare-rod and non-boosted configurations, indicating that this configuration of the Long March 9 giant rocket will become a new development direction, and maybe there will be better configurations in the future. , but at present, the 22nd version of Chang Zheng Long March 9 is the most advantageous configuration scheme…..
References:
“Guangming.com” article on April 24 “Aerospace lights up dreams, BIT launches “Space Moon” activity”
“The Paper” June 24, 2021 article “The Diary of Space Entering Hong Kong, the University of Hong Kong welcomes the 83-year-old Academician Long Lehao, and changes to the scene of chasing stars in seconds “
Images and visuals are from their respectives. 科技前沿技术信息 | 科普博览
On 24th April 2022, China- People’s Republic of China- CNSA –China National Space Administration throughout the China- People’s Republic of China in which on that Day it’s China National Space Day in which it is the seventh China National Space Day in which there’s promotional events across the whole nation.. in which this week there’s promotional release themes on the previously hard working campaigns in space collaboratively in which features many successfully accomplishments in between various sectors among with governmentally to commercially industrial innovative designs of space ..
On the 21st April 2022 China – People’s Republic of China unveils a poster for its 7th #ChinaSpaceDay. Elements such as #LongMarch5, Taikonauts and names of China’s spacefaring projects including Tianwen-1 and the Tianhe core module are featured…. In which there was many designs element for the promotional poster….
In which in the Ancient postmodern Ultra-Modern City in Chengdu in China Aerospace Science and Industry Corporation have created an awesome Art Exhibition China Aerospace Culture and Creation CASCI “Boundless” Aerospace Art Exhibition..
[“Boundless” space art exhibition airborne in Chengdu! Take you on a journey of discovery] the 7th “China Space Day” is coming! Chengdu friends can have a feast for the eyes! In order to promote the spirit of spaceflight and spread spaceflight culture, the 中国 Aerospace Culture and Creation CASCI “Boundless” Space Art Exhibition will be held in Chengdu on April 22nd!
Take you to an immersive experience, look up at the size of the universe, and explore the boundaries of the universe. Among them, in the “Moon Walk” area, a 44m cosmic giant screen 3D projection, 20t gravel restores the lunar surface, and a space post office is specially set up; in the “Rocket Launch Base” area, the site is located in the “Rocket Launch Base”, and a 10m-high rocket rises from the ground. Leaving the surface of the earth, we will do everything we can to go to the unknown together; there are also interactive four-dimensional space, aerospace achievement exhibition area, anti-gravity training… and so on, 10 wonderful exhibition halls, 1200 square meters of large exhibition space, carefully polish the development history of China’s aerospace, only for Show this shining starry sky before the eyes of Chengdu citizens.
