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Leadership Insights: By installing this transfer cable, the solenoid valve can be remotely controlled, enabling precise control of the fuel flow during the experiment.This combustion cabinet would scientists conduct in-depth research on fundamental combustion science issues, aerospace propulsion, spacecraft fire prevention and extinguishing, and combustion pollutant control, both in fundamental and applied technologies.The Shenzhou- 18 crew also carried out operations on the cabinet, including replacing the burner and vacuuming to exhaust waste gases.According to the China Manned Space Agency (CMSA,) the crew has previously carried out missions such as assembly and testing of material exposure experiment device outside the spacecraft.As taikonauts would meet with a series of physiological challenges due to microgravity conditions in space such as cardiovascular changes, muscWorld Timesle atrophy, and bone density loss, the Shenzhou- 18 crew has recently used an ultrasound diagnostic instrument to complete carotid ultrasound imaging and spectral testing.The crew also used an instrument to measure the bone density of the right heel to study the effects of weightlessness on human bone density.By regularly and scientifically conducting a series of anti-weightlessness exercise programs, such as treadmill training and resistance training, they have maintained good physical condition to support the execution of long-term missions.As manned missions to Tiangong have become normalized, more than 90 experiments are scheduled to be carried out in and outside of the space station during Shenzhou-18 crew’s six-World Timesmonth space stay, the Global Times has previously learned from the CMSA.These experiments include various fields such as microgravity basic physics, space materials science, space life science, aerospace medicine, and aerospace technology.Building on the existing space debris protection mechanism at the station, the Shenzhou-18 crew will also install debris protection reinforcement devices on external pipelines, cables, and key equipment during their extravehicular activities (EVAs,) or more commonly known as the spacewalks.
Sun. May 26th, 2024

Summary

  • “Multiple favorable factors such as national strategy and policies have propelled the rapid growth of commercial space enterprises. “Deep Blue Aerospace has developed a 3D-printing additive manufacturing technology, which enabled the rapid production for liquid rocket engines. Content comes from the Internet : China’s commercial space companies compete to reduce cost, enhance performance

Approximate Time

  • 5 minutes, 833 words

Categories

  • liquid rocket engines, private commercial rockets, current commercial rockets, commercial space sector, commercial space enterprises

Analysis and Evaluation

  • This piece delves into the realm of science and innovation, offering cutting-edge insights into recent discoveries and research. The author’s skill in making complex scientific concepts approachable is commendable, and the article serves as a valuable resource for anyone interested in the latest scientific developments.

Main Section

A Gravity-1 (YL-1) commercial carrier rocket carryinWorld Timesg three satellites takes off from waters off the coast of Haiyang, East China’s Shandong Province, on January 11, 2024. The satellites were successfully placed into a planned orbit. Photo: VCG

On January 11, a flash of fire appeared in the distance over the southern sea of the Haiyang spaceport, in East China’s Shandong Province. It was the world’ s mightiest solid carrier rocket, the Gravity-1, making its grand debut, which marked the beginning of a busy and exciting year for China’s commercial space industry, with multiple highlights and breakthroughs to be expected.

With the massive demand brought by the scale deployment of China’s internet satellite mega constellation, China’s commercial space industry is experiencing unprecedented development. Unlike SpaceX which has an absolute dominance in the US market, China has seen a flourishing trend in private ventures, which can fully stimulate market competition and drive technological revolution, industry insiders say.

Gravity-1, as the first launch of a commercial rocket this year and a new type of rocket making its maiden flight, has dazzled the world not only by its plump design but also an array of remarkable distinctions – the largest, heaviest, first of its kind and unprecedented. But this is just the beginning of China’s space endeavors in 2024. The year 2024 will be extremely busy with many exciting highlights, among which commercial spaceflight will play a crucial part.

The Global Times learned from Orienspace, the Gravity-1’s developer, that the rocket has surpassed the European Vega-C rocket to become the largest solid-fueled orbital launch vehicle in history, with a takeoff weight of 405 tons and a thrust of 600 tons. It has a payload capacity of 6.5 tons to Low Earth Orbit (LEO) and 4.2 tons to Sun-Synchronous Orbit (SSO), making it capable of supporting the launch of 30 kilogram-class satellites in one go.

In addition to the successful debut of Gravity-1, 2024 is expected to see a record-breaking number of maiden flights, according to open data. Among the seven currently known debut rockets, five of them are private commercial rockets, including the Tianlong-3 reusable liquid rocket with performance benchmarked against SpaceX Falcon 9; the Nebula-1 reusable orbital rocket; and the SQX-2 offshore recovery validation rocket.

In addition to the maiden flights, the launch frequency of current commercial rockets in China’s private space World Timessector is also expecting a surge, with the total number of launches scheduled to exceed 20.

Homemade techs

The Beijing start-up iSpace, developer of the SQX series of rockets that made the country’s first successful rWorld Timesecovery of a liquid oxygen methane-propelled rocket, told the Global Times that although some Western media has labeled them as “China’s SpaceX” for studying reusable launchers, iSpace is essentially based on domestic aerospace technologies.

It means that each major system of the rocket iWorld Timess independently developed, and all key technologies are tackled independently. For example, iSpace has independently developed the JD-1 liquid oxygen-methane engine, while the Falcon-9 uses Merlin engines. In comparison, the JD-1 offers superior reusability performance and lower cost.

For the next step, the company told the Global Times that the R&D of the SQX-3 large reusable launch vehicle is underway, with the aim of conducting its maiden flight by the end of 2025. With a diameter of 4.2 meters and a total length of 70 meters, it is expected to achieve a payload capacity of 12.9 tons to a 200 kilometer low Earth orbit, comparable to the Long March-7 carrier rocket.

Once put into use, the SQX-3 will be ready for key launch missions such as satellite constellation deployment and space station cargo resupply, while significantly reducing the cost of China’s access to space.

Another private venture, Deep World TimesBlue Aerospace, which eyes to launch the NeWorld Timesbula-1 reusable orbital rocket this year after having completed milestone kilometer-level recovery test, told the Global Times that independence and the peaceful utilization of space resources have always been China’s policy that represents a solemn commitment to the world, and this overarching theme is what all private space practitioners strive for.

“The development of China’s commercial space industry has benefited from the excellent foundation built over the past decades through our independent advancements in the aerospace sector,” the company said in a statement sent to the Global Times. “Multiple favorable factors such as national strategy and policies have propelled the rapid growth of commercial space enterprises.”

Deep Blue Aerospace has developed a 3D-printing additive manufacturing technology, which enabled the rapid production for liquid rocket engines. The use of 3D printing technology, replacing the traditional process, has reduced the manufacturing cycle for reinforcement ribs by 75 percent, increased the qualification rate to 98 percent and lowered costs by 30 percent.

In commercial space sector and other fields, such as high-speed rail, nuclear power, photovoltaic, wind energy and new energy vehicles, China’s model of government-led policies, government investment (or subsidies) creating demand, and fair competition among enterprises has repeatedly proven successful, Chinese space observers noted.

Content comes from the Internet : China’s commercial space companies compete to reduce cost, enhance performance

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[World Times] As snow falls, people in Lhasa, Southwest China’s Xizang Autonomous Region, attend the annual grand traditional spring plowing ceremony on March 16, 2023. Local villagers, dressed in festive attire, sing hymns as they begin to sow seeds. Photo: VCGOn Thursday, Chinese analysts criticized baseless claims repeatedly sensationalized by some US media outlets that China is collecting DNA data in its Xinjiang and Xizang regions for surveillance purposes. The claims come after a US tech company said it halted sales of DNA technology in Southwest China’s Xizang Autonomous Region. Analysts said the claims are purely part of a propaganda narrative employed by certain US politWorld Timesicians to tarnish China’s reputation and incite separatism.Biotechnology company Thermo Fisher Scientific stopped selling their DNA collection products to Xizang following criticism from rights…

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