At 1211 Hours Hong Kong SAR- Beijing Time 20TH September 2024 , China- People’s Republic of China- CNSA –China National Space Administration Successfully launched Chang Zheng – Long March 2D Carrier Rocket ignited and took off at the Taiyuan Satellite Launch Center Shanxi Province.. Successfully launch China successfully launched中国一箭6星打开成功 Jilin-1 wideband 02B01~06 satellites successfully into its pre-determined orbit…..
[Two new key products undergo real flight test assessment! The Long March 2D launch of six satellites in one rocket was a complete success! ]
The satellite-rocket separation mechanism of this rocket adopts a non-electric explosion separation mechanism to better ensure the design of the satellite separation timing; the rocket is equipped with a high-precision miniaturized ten-meter fibre optic inertial group and an arrow machine for flight test testing. Without affecting the main mission, the two key products were subjected to real flight test assessment, which is another step forward for the application of subsequent models.
This launch is the 91st launch of the Long March 2D carrier rocket, the 218th launch of the Long March series of carrier rockets developed by the Eighth Academy, and the 536th launch of the Long March series of carrier rockets.
DURING MAY 2024 CNSA _China National Space Administration – Assisting manned lunar landing Recently, Asia’s largest Carrier Rocket space engine high-altitude simulation test International benchmark was completed and put into use in Tongchuan, Shaanxi province, China, People’s Republic of China, marking a major breakthrough in the key technology of high-altitude simulation test of the main reduction engine of China’s manned lunar landing project, which will effectively guarantee and support the smooth implementation of the manned lunar exploration project. What is a space engine test bench? Why is it the “ultimate test site” for Carrier Rocket spacecraft engines?
1. What is a space engine test bench?
There is a consensus in the aerospace field: “To develop aerospace, power comes first .” In space exploration, space engines provide power for launch vehicles and other spacecraft to fly into space. If the engine is regarded as the “heart” of the rocket, then the space engine test bench is like the monitor of the rocket’s “heart”. It is a ground test facility specially used to test the performance of rocket engines . It is usually composed of a test workshop, a load-bearing pier, a guide trough, a measurement and control center, a measurement and control system, a test frame, etc. It can simulate the working environment of the engine to verify and evaluate the performance, function, strength, reliability and other aspects of the rocket engine, and ensure that the engine can work stably and reliably in actual flight.
2. Why build a space engine test bench?
The development of space engines is a complex and delicate project, which requires not only a deep theoretical foundation and advanced computational simulation technology, but also actual ignition tests to verify the accuracy and reliability of the design. Therefore, in the process of engine development, the combination of theory and practice is indispensable. The engine test bench is equipped with various high-precision sensors, which are the “senses” of engine testing and can monitor the key parameters of the engine in real time during the ignition test. Through these precise measurements, researchers can intuitively observe the performance of the engine in actual work, so as to have a comprehensive and in-depth understanding of the engine’s performance. These test parameters not only provide researchers with various indicators of the engine’s working status, but also serve as an important basis for evaluating engine performance. By comparing the test results with the design expectations, researchers can find deficiencies in the design and make necessary improvements and optimizations to the engine.
3. Why do different engines require “tailor-made” test benches?
From the perspective of type , since each type of engine has its own unique design and performance parameters, it determines the specific environment and conditions required for testing. This means that one test bench cannot solve the “package” engine test work. Different types of test benches need to be built according to different types of engines to make the test environment and the actual working environment of the engine as consistent as possible. For this reason, test benches can also be classified. For example , according to the scale of the test bench , the test bench structure, the propellant tank capacity, and the measurement and control equipment, it can be divided into large test benches and small and medium-sized test benches; according to the type of engine propellant, it can be divided into liquid oxygen and liquid hydrogen engine test benches, liquid oxygen and kerosene engine test benches, and room temperature storable engine test benches; according to the length of the engine thrust test, it can be divided into two types of test benches: steady-state test and dynamic test. The former mainly tests the engine’s steady-state thrust and pressure performance indicators, and verifies the quality of engine design and manufacturing through long-term stable work, while the latter focuses on the study of the thrust and pressure rise transition process and the aftereffect impulse change characteristics of the descending stage; according to the installation posture during the engine test, it can be divided into horizontal test benches and vertical test benches. The horizontal test bench has a wide range of uses, and the change of engine mass during operation has little effect on thrust measurement, but at the same time, this test bench is less sensitive to lateral forces. Vertical test benches are divided into upright and inverted types.
From a safety perspective , the test bench must ensure safety during the test process. Different engines will generate different thrust and heat flow when ignited, so special guide grooves and cooling systems are needed to deal with it.
From a measurement perspective , in order to obtain accurate test data, the sensors and measurement equipment on the test bench need to match the specific parameters of the engine. For example, the thrust measurement system must be able to accurately measure thrust within a specific range.
From the perspective of the simulation environment , the test bench is designed to simulate various conditions that the engine may encounter in actual flight, including high-altitude simulation, vibration environment, etc. The flight conditions of different engines may be different, so a specific simulation environment is required.
From a cost-effectiveness perspective, designing and building dedicated test rigs for different engines can improve the efficiency and accuracy of testing, saving time and resources in the long run.
From the perspective of technological development , the advancement of space engine development technology will be accompanied by new testing requirements. The construction of a dedicated test bench can provide the necessary testing support for new engines.
4. Why has the high-altitude simulation test bench become a development trend?
When launching, the engines of spacecraft such as the upper stage of a launch vehicle are in a state of low pressure at an altitude of more than 80 kilometers, and their high-altitude performance is very different from that on the ground. Since the aerodynamic and thermal loads that affect the structural strength of the engine cannot be simulated when it is stationary on the ground, a high- altitude simulation test bench is needed to create high-altitude conditions . Usually, a low-pressure environment of 30-40 kilometers is formed by vacuuming to simulate high-altitude flight conditions. The high-altitude simulation test bench is mainly used to assess the nozzle structure and performance of the engine in a low-pressure and vacuum environment to ensure the reliability of high-altitude operation. Through high-altitude simulated hot tests , the safety of the test can be improved , faults can be discovered and eliminated in a timely manner , and key support can be provided for the development of advanced engines .
With the continuous construction and improvement of the space engine test bench, it will provide a more advanced and reliable platform for the development and testing of various types of spacecraft engines.
时空道宇科技 Space Time Daoyu Technology – Zhejiang Spacetime Daoyu Technology Co., Ltd. Zhejiang Spacetime Daoyu Technology Co., Ltd. Geely GeeSpace is Located 10th Floor, Building 1, Xinglian Technology Park, No. 1535 Hongmei Road, Xuhui District, Shanghai Ultra Mega City, China, People’s Republic of China. .. Is a technology innovation enterprise strategically invested by Geely. Founded in 2018, it is committed to becoming a global leading AICT infrastructure and application solution provider. SpaceSpace is a technology innovation company under Geely Holding Group. It was founded in 2018 and is committed to becoming a global leading provider of aerospace information and communication infrastructure and application solutions. SpaceSpace is committed to promoting the commercialization and upgrading of China’s satellite industry chain and the commercialization and application of China’s aerospace technology.
SpaceTime Aerospace focuses on constellation business, satellite manufacturing, and satellite application fields, providing highly competitive, safe and reliable products and services. In the field of satellite manufacturing, through self-developed general-purpose satellite platforms of various scales, as well as low-cost, highly reliable satellites and supply chain products, one-stop in-orbit delivery from satellite development to satellite mass production AIT is achieved. In the field of satellite applications, SpaceTime Aerospace provides global medium- and low-speed satellite communication services, satellite-based high-precision positioning services, and satellite remote sensing AI services through future travel constellations and its own ground systems. It deeply integrates aerospace technology with automobile manufacturing, future travel, and artificial intelligence, and cooperates with ecological partners in an open manner to continuously create value for customers and build a new generation of aerospace digital economy.
Through the construction of the future travel constellation, Spacetime Daoyu will create a “future travel” ecosystem with full coverage, combining multi-dimensional carriers such as automobiles and consumer electronics products to empower smart travel, unmanned systems, smart cities and other fields, and create a future travel technology ecosystem.
Host: Mr. Wang, this satellite on the screen is your target, right?
Wang Yang: Yes. What we are doing is to send satellites into space and build a global low-orbit communication constellation. We are currently launching 72 satellites into a 600-kilometer low-altitude orbit. After these 72 satellites are deployed, they can provide satellite network signal coverage anywhere in the world except the North and South Poles.
Host: What is the difference between this low-orbit satellite and an ordinary satellite?
Wang Yang: For example, the live broadcast signals of the current Paris Olympics are generally transmitted via high-orbit satellites. From the surface of the earth, there is a geosynchronous orbit about 36,000 kilometers above the earth, and three high-orbit satellites can cover the entire surface of the earth. However, with the development of technology, we have found that satellites can play a greater role in the low-orbit area of 300 to more than 1,000 kilometers. For example, it may take 240 milliseconds of delay to communicate with a high-orbit satellite, but it only takes 20 milliseconds to communicate with a low-orbit satellite. The overall transmission efficiency and delay of a low-orbit satellite are even better than those of ground optical fibers. At the same time, it can cover places that our ground base stations cannot cover.
Host: Mr. Wang, you just said that three high-orbit satellites can cover the world, so is it necessary for us to build 72 (low-orbit satellites)?
Wang Yang: It is precisely because the cost of high-orbit satellites is too high. We need at least 1 billion RMB to build a high-orbit satellite, and its launch cost is also very expensive. If it is a low-orbit satellite, its price will drop by one or two orders of magnitude, and it is safer. The failure of any satellite will not affect the reliability of the entire communication. The capacity of low-orbit satellites will be larger and the speed will be faster. One of the problems we often encountered before is that the human ground network is so perfect, with optical fiber, base stations, and core networks. The ground network it has established can even provide network signals at the base camp in the Himalayas. But the real situation is that 94% of the world has no signal coverage. In the world, our understanding of the blue planet is still far from enough.
Host: Is it worth it for us to spend money to provide radio signals to places where there are not many people?
Wang Yang: This should be an inevitable trend. Humans will continue to expand the boundaries of space, such as conquering uninhabited areas, and even going beyond the Earth to travel to the stars. With satellites, whether our friends are in the desert, on the island farthest from the mainland, or even traveling in the future, our mobile phones, cars, and aircraft can all be connected to data everywhere.
Host: When will we be able to achieve the goal of launching 72 satellites?
Wang Yang: We should be able to complete the deployment of 72 satellites in about 12 months. (After the deployment of the third-orbit satellite is completed) we will provide commercial services to the world. In fact, we have reached a stage where applications are being put into practice.
Host: (Compared to the long cycle of other future industries) Yours only takes one year?
Wang Yang: Actually not. We have experienced 10 years of continuous entrepreneurship, and most of our team members have accumulated nearly 20 years of experience in the entire aerospace field.
Host: Do you have any longer-term goals?
Wang Yang: In the second phase, we will focus on the establishment of a low-orbit communication constellation of 300 satellites. The low-orbit space is already very crowded, with more than 6,000 Starlink satellites operating at 300 to 500 kilometers, so it is urgent to occupy the frequency and orbit positions in the entire space.
Host: We have the impression that artificial satellite technology is relatively mature. Are there any scientific shortcomings in your field that need to be addressed?
Wang Yang: In fact, aerospace itself is a system engineering, not a theoretical study. For example, the theoretical system of all the aircraft designs we are involved in now was very complete 100 years ago, and the current engineering cycle is just different.
Host: If you want to widen the gap with your peers, do you need to build a moat in certain areas?
Wang Yang: This is indeed necessary. We have established our own moat in the layout of the industrial chain of commercial aerospace and the commercialization of the landing. The landing of large-scale commercial applications has always been a difficulty in the development of commercial aerospace companies. We have taken the lead in achieving breakthroughs in this regard. I brought a self-developed satellite communication chip, which uses the industry-leading 22nm process. This chip is actually used in our current mobile phones. We have launched a constellation of low-orbit communication satellites for satellite communications. How do we use it on the ground and how do we demodulate our signals? We will implant this 4mm chip into existing mobile phones, and use the mobile phone antenna to transmit satellite data.
Host: It sounds like our goals are very ambitious. Can other industries or other supporting facilities keep up? Are they too advanced?
Wang Yang: I think what we are doing now is actually achievable based on China’s entire industrial foundation. Our team used to have many people from the national team, as well as some experts from the Chinese Academy of Sciences. At the beginning of the business, we repeatedly reminded ourselves that the probability of scientists dying in entrepreneurship is extremely high, and it may even be a disaster to some extent. Therefore, when we consider the entire business rhythm, it must be consistent with the underlying logic of commercialization.
Back to the information and communication industry, it is actually very clear. Since the beginning of 2000, the 3G era has come, and at that time we had mobile Internet. In the last decade, the 4G era came, and we have the current digital economy era. So what is this decade? We see China’s 5G and the United States’ Starlink. The information and communication industry will definitely be able to achieve full coverage from 5G to 6G, meeting all our human travel requirements from the surface to low altitude and then to space. Of course, I think 8G should be the era of interstellar immigration. We will have network signals all the way from here to Mars, and it will become a reality.
Moderator: Capital participation requires a valuation and calculation. Can you give us a calculation for the field you are engaged in? How much money do you think it will cost based on the future development potential and the technology we have invested in?
Wang Yang: We have invested billions in research and development in the past six years. In our industry, whether it is a rocket company, a satellite company, or now a more advanced constellation networking company, its valuation will definitely exceed 10 billion.
Host: Regarding policies, what kind of policy soil is needed to plan for future industries?
Wang Yang: Considering the characteristics of low-orbit communication constellations in commercial aerospace, I think we should encourage the globalization of China’s commercial aerospace in the foreign trade sector, that is, the “going global” of the entire technology products and services. We look forward to the introduction of some national standards in this regard. We used to study some Western industry-university-research behaviors. In China’s system, from districts, cities, provinces to the country, the entire industrial policy support and innovation encouragement for each industry are very complete, but in fact, the real technology will eventually fall on commercial realization. This should be the government holding the baton, and then through the market economy, that is, the role of leading enterprises, to drive the innovation of engineering and original technology. This is actually a logical cycle. If we only mention one end, this matter will definitely be biased.
Host: What will our lives be like when this field develops to a mature stage?
Wang Yang: Let me make a creative summary. I believe that humans will always have the need to communicate with the outside world in the social system, so the implementation of all technologies and engineering around human communication will continue to develop iteratively. Like what we are doing in aerospace now, no matter where humans are now or where humans will explore in the future, we will ensure that there is network connection and communication methods. This is my wish.
At 1442 Hours Hong Kong SAR- Beijing Time 6TH August 2024 , China- People’s Republic of China- CNSA –China National Space Administration Successfully launched Chang Zheng – Long March 6 Yao 58 Carrier Rocket ignited and took off at the Taiyuan Satellite Launch Center Shanxi Province.. Successfully launch China successfully launched the Qianfan Polar Orbit 01 Group Satellite Successfully into its pre-determined orbit…
Successfully launched the Qianfan Polar Orbit 01 Group Satellite into space using the Chang Zheng -Long March 6 modified carrier rocket at the Taiyuan Satellite Launch Center. The satellite successfully entered the predetermined orbit near-polar orbit (800km×90°), and the launch mission was a complete success…….
The scene was so explosive! It is worthy of being the best-looking rocket in China! I finally checked in at all the domestic space launch sites
The Qianfan 01 group of satellites has realized the first batch of China’s flat-panel satellite mass production and the launch of 18 satellites in a single rocket] The first batch of 18 commercial networking satellites of the Qianfan constellation that were successfully launched this time are the first batch of the first generation of satellites (GEN1 satellites) of the Qianfan constellation. The Qianfan constellation will provide global users with satellite (broadband) Internet services with low latency, high speed and high reliability.
Long March 6 Yao 21 Carrier Rocket is the first flight of the double-start version of YF-115 This time Long March 6 Yao 21 Carrier Rocket carried out the Qianfan Polar Orbit 01 satellite launch mission, it has three significant features: First, the second-stage power system adopts double start for the first time status, further improving the rocket’s carrying capacity……
Secondly, this mission is the first commercial launch mission of the Long March 6A rocket. The model has accelerated its adaptation to the commercial launch mode and adopted the rolling batch production method of general products, which has greatly improved the commercial performance of the rocket.
Third, this mission is the first launch of 18 satellites in one rocket by the Long March 6A carrier rocket. In order to make more reasonable and effective use of the space inside the fairing, the satellites adopt a stacked layout. After the rocket enters orbit, it passes through at a certain angular speed. Rotation to achieve high-precision and high-reliability separation of multiple satellites.
“Qianfan Constellation” is one of the two major low-orbit satellite Internet constellation plans under construction in China. Shanghai Yuanxin Satellite Technology Co., Ltd. is the operator to lead the planning, construction, operation and other businesses. The long-term plan for the space segment of the “Qianfan Constellation” will deploy more than 15,000 satellites.
As one of the research and development parties of the “Qianfan Constellation”, the Shanghai Microsatellite Engineering Center is mainly responsible for the development of satellite systems, including the development of platform products and payloads, as well as the assembly, integration and testing of the entire satellite. The Qianfan Polar Orbit 01 group of satellites has realized the first batch of China’s flat-panel satellite mass production and the launch of 18 satellites in a single rocket.
深蓝航天 Deep Blue Limited – Deep Blue AerospaceLandspace One of sixty Chinese private space Carrier Rocket Companies in China-People’s Republic of China… As many of sixty plus Private Rocket Deep Blue Aerospace Co., Ltd. was established in 2017. The company is mainly a high-tech aerospace enterprise that focuses on the direction of liquid recovery and reusable launch vehicles and provides users with commercial launch services. Deep Blue Aerospace Co., Ltd. is headquartered in Nantong City, Jiangsu Province. At the same time, the company has rocket general and liquid engine R&D centers in Yizhuang, Beijing and Xi’an, Shaanxi, respectively, and a rocket power system test base in Tongchuan, Shaanxi…..
[The first stage of the Deep Blue Aerospace Nebula-1 rocket is scheduled to conduct a high-altitude vertical recovery flight test in August and a 100-kilometer-level VTVL vertical recovery flight test at an appropriate time]
Recently, Deep Blue Aerospace successfully completed the B2 round of financing, fully accelerating the technological innovation of recyclable rockets and the commercialization of the recyclable and reusable rocket Nebula-1 (hereinafter referred to as “Nebula-1”). Wuxi High-tech Zone Investment and Control Group led this round of financing and became a cornerstone investor in multiple rounds, completing and locking in nearly 1 billion yuan in funds, injecting strong development momentum into the research and development and production of Deep Blue Aerospace, and jointly promoting the rapid development of China’s aerospace in the era of great aerospace
.
This round of funds will be mainly used to strengthen technology research and development, expand production scale, optimize supply chain management, and accelerate market promotion. It is worth noting that the Deep Blue Aerospace Rocket Intelligent Manufacturing and Assembly Base of more than 20,000 square meters has landed in Wuxi High-tech Zone. With the Beijing-Hangzhou Grand Canal as the background, it will accelerate the expansion of the rocket industry cluster along the canal. The Deep Blue Aerospace Rocket Canal Factory will become a demonstration base for high-end manufacturing and commercial rocket industries in Wuxi High-tech Zone. The
Canal Factory will be mainly used for the mass production of Nebula-1 and Nebula-2 rockets. As a representative of China’s recyclable rockets, the Nebula-1 rocket will significantly reduce launch costs and increase launch frequency, and will be of milestone significance for promoting the sustainable development of China’s commercial aerospace industry. At present, preparations for the first launch of the Nebula-1 rocket are in full swing. The Nebula-2 rocket, which is scheduled to make its maiden flight at the end of 2025, will have a takeoff scale of 1,000 tons and will also be recyclable and reusable. On
July 21, the Nebula-1 rocket completed a series of tests of the first-stage three-machine parallel full-time power system at the Deep Blue Jigang Test Base in Jinan City, simulating the full working conditions of high-altitude recovery flight and a large range of engine variable thrust tests, and achieved complete success. In August, the rocket body will go to the test site to prepare for the upcoming high-altitude vertical recovery flight test of the first stage of the Nebula-1 rocket, and will choose an opportunity to conduct a 100-kilometer-level rocket vertical recovery flight test. Each test of the rocket will accumulate valuable test data for the first flight of the Nebula-1 orbital rocket, ensuring that the Nebula-1 reusable rocket “goes into space without any problems” and that the first flight of the Nebula-1 rocket into orbit and recovery will be completed smoothly by the end of the year. Deep Blue Aerospace will continue to increase its R&D investment in the field of reusable rocket technology, and is committed to exploring more efficient, economical and environmentally friendly space launch solutions to promote the innovative development of China’s commercial space industry. (Deep Blue Aerospace )
