Satellite wings?The cabin section turns the butterfly fly?Domestic Space Clear Daofu "appeared"!

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Introduction: It was independently developed by the 805 Hospital of China Aerospace Science and Technology Group 805 and configured on the railway load cabin in June to smoothly launch the device on the orbit in June, which also marks the derailment sail that my country is used for the slowdown of space fragments. The rail application should enter a new stage, which is an important step for my country to control space garbage!

One, be vigilant! Earth has been surrounded by space garbage

From the first artificial satellite of the Soviet Union's human beings before October 4, 1957 to the second half of 2019, the World Aerospace performed a total of 4,000 aerospace launch tasks, launching more than 8,000 spacecraft, to the deadline of space -run space There are about 1500 instruments. In the aerospace mission, the failure spacecraft and the rocket -level sub -level, the operating fragments of the fireworks, and the spacecraft fragments have become unprecedented space garbage. Once these space garbage or space garbage and effective spacecraft have a collision, more, smaller space garbage will be created.

As of 2019, more than 50,000 abandoned spacecraft and space fragments recorded near the earth have been recorded. Due to the restrictions on tracking capabilities and resources, there are more unprecedented small space garbage floating freely on the earth's track space. In fact, space garbage has surrounded the earth, and with the popularity of human aerospace activities, more space garbage is producing, leading to unprecedented threats in human space activities, which is especially for manned space. To this day, it has reducing space garbage to the point that it is urgent!

2. What is the way to use space garbage in humans?

To reduce space garbage, the primary problem is to start from the source. At present, the source of space garbage in the earth's track is the last sub -level and failed satellite of the launch of the carrier rocket. It is mainly concentrated in the near -ground orbit. In the face of the new space garbage in this rail area, the most effective way to respond is to let it go and re -enter.

Typical spacecraft can be divided into two types: active and passive. Active departure means that at the end of the life, the spacecraft uses the power device carried by itself to mobilize the track, reduce the speed of flight and leave the running track, thereby gradually falling into the atmosphere and burning. At 11:31 on July 27, 2022, Beijing time, the "Tianzhou No. 3" freight ship was controlled again into the atmosphere. Most of the devices of the spacecraft were destructive and destroyed, and a small number of wreckage fell into the Southern Pacific reservations. The "Tianzhou" spacecraft is a typical representative of active departure spacecraft.

Passive departure can be divided into two cases. The first is the self -flow of abandoned spacecraft, and the resistance generated by the thin atmosphere is naturally reduced. The second is to allow the spacecraft to use the electric power line and inflatable ball When the external force is reduced to the flight track, the film sailing device is the direction of the current development.

Third, the satellite is out of orbit, the "angel wings" of the cicada wing!

On September 12, 2019, Beijing time, the "Taurus" Na Xing took the "Long March 4" 39 carrier rocket successfully launched. September 18th after 6 days, the satellites successfully launched the exit sail and began to be passive. It is the first time that my country is out of orbit.

Line sailing is a thin film structure that is configured on aerospaces such as satellites and can be independently developed in space. Based on space -based ultra -light film can be exhibited structure technology, leaving the rail sail to increase the welcoming area of ​​the spacecraft and use the low -orbit of low -orbit to use the low -orbid rails. The pneumatic resistance formed by thin atmosphere in the environment allows the spacecraft to gradually slow down the operating speed, reduce the height of the rail, and promote it to accelerate the derailment. When the spacecraft was launched on track, the leaving sail was gathered. When the spacecraft's life ended, the sailing noodle unlocking instruction started, the off -track surface was unfolded, and the spacecraft turned into the process of re -entering.

"Taurus" "Na Xing is equipped with my country's first micro -satellite standard departure sail, which was developed by the China Aerospace Science and Technology Group Space Structure and Institutional Technology Lab (relying on the 805 House of Aerospace Technology Group). The film is extremely slim, and the thickness of the hair is 1/10 (0.06-0.09 mm), which is thinner than the thickness of the household plastic wings (about 0.01 mm). It is close to the thickness of 0.005 mm in the cicada wings.

Based on the ultra -light film, the "Taurus" uses an advanced micron -level film folding technology with the sailing of the sail. The exhibition ratio reaches the international first -class level. The area is 2.25 square meters. The internal gap between the separation mechanism. Such off -track sails can be installed to various mature small satellite platforms without occupying satellite packaging.

"Taurus" this trip is designed to verify the efficient closing of the film from the orbit to the rail exhibition, and the effect of the derailment was measured, which has achieved remarkable results. Since then, "Qilu 4", Foshan No. 1 "," Tianshu No. 1 "," Golden Bauhinia 2 "and other launch of many commercial satellites have also been equipped with disobedient sails, achieving the application promotion of littering sails.

Fourth, the world's first! "Garbage to Space" declared war

On June 23, 2022, Beijing time, the "Long March 2 Ding" was successfully launched in the 64th carrier of the rocket. At 07:00 on June 26th, 3 days later, the departure system configured on the rocket load cabin was smooth Line sailing device. This is currently the largest exit sail product in China, and it is also the first international application to the launch of the carrier rocket in the world.

The "Long March 2 Ding" is 60 mission to use a large area to leave the sail. The structure is more complicated and the technology is more advanced. Sailing materials are extremely slim and 1/10 of the hair wire diameter (0.06-0.09 mm) in the lack of thickness. Through accurate folding design and high density pressure, the sailing surface can be stored into a very small volume, equipped with an advanced elastic expansion mechanism The area of ​​the sailing area of ​​25 square meters under the full expansion state is more than 11 times that of the previously satellite standard standard departure sailing area. "Long March 2 Ding" is about 300 kilograms of the 64 -load cabin. If you let the self -flow will only become a large space garbage floating in the near -land orbit, and after the derailment sail, the load cabin will greatly speed up the derailment. Process, realize the atmosphere within 2 years.

The significance of the application from satellites to rocket cabin sections from satellites is self -evident. Taking our country as an example, in 2021, my country carried out 55 aerospace launch, except for the "Long March 5" Yao 2 and 3 unsuccessful rocket launch, which was removed from the "Long March 5". Without intervention, these cabins have undoubtedly become new large space garbage and will stay in space for a long time. And if the end -level rocket -level rockets that perform near -ground orbital mission in the future of the space launch are equipped with a large area of ​​exit, the last child level of the newly reserved rail can be reduced by more than half in the short term.

Five or four advantages! The most promising "garbage governance" method!

Compared with other derailment methods, the sails have their unique advantages. light in mass. Line sailing uses a micron-level film, and the thickness is only 1/10 of the hair diameter (0.06-0.09 mm). It has the characteristics of lightweight, and the micro-satellite can also be equipped. Taking the "Taurus" Naxing as an example, the total mass of the star is about 10 kilograms, and it can still be equipped with the derailed sail that matches its specifications. With the development and progress of aerospace technology, the miniaturization of the world satellite has made great progress. Small satellites have sprung up, especially driven by large -scale constellations such as "Star Chain", the number of satellites in the number of satellites shows geometric growth growth rate increased. It is becoming one of the main sources of space garbage, and the lightweight "leaving sail" provides an excellent plan for solving this problem.

small volume. The derailment sail has the characteristics of high exhibition ratio. The device uses advanced micron -level film folding technology. The exhibition ratio has reached the international first -class level. It can be installed to various mature platforms without occupying the platform itself. Taking the "Taurus" as an example, its dependent sailing device has an expansion of 2.25 square meters, which is very small when it is collected. Only the standard diameter of 42.67 mm. Essence

low cost. As a light -quality film structure as a light -quality area, the cost advantage is obvious with the same departure efficiency. Compared to the active departure device of the configuration thrust device, the film sail provides effective derailment means at the cost of 5%of the cost of the aerospace device. Taking the "Taurus" Naxing as an example, its satellite platform was developed by Shanghai Eiti Aerospace Technology Company. The cost of "Taurus" Na Xing is close to 250,000 yuan. For various industries, costs are one of the key factors that restrict the industry scale at any time, and low cost will also become one of the key advantages of the promotion and application of derailment sails.

High maturity. The spatial ultra -light film exerting structure technology adopted by the sail can be one of the cutting -edge technologies in the international aerospace field today. Essence The "Taurus" Na Xing passive derailment test opened the orbit application of the sail. A number of commercial satellites such as "Qilu 4", "Foshan No. 1", "Tianshu No. 1", "Golden Bauhinia 2" achieved derailment Sailing promotion. On the basis of "Long March 2 Ding", the model development team further broke through a number of key technologies on the basis of the "Taurus" and the sail. , Fill the domestic medium and large spacecraft and the carrier rockets to enter the rail section to increase the resistance of departure.

In all kinds of derailment methods, in addition to the advantages of light quality, small volume, low cost, and high maturity, there are also relatively low advantages, which are suitable for various aerospaces with different orbit and specifications. The actual effect of the sails is significant, and the speed of abandoned satellites can be increased by an order of magnitude. Take a small satellite with a rail height of 700 kilometers and a quality of 15 kg as an example. If you let it go for self -flow, the satellite life will be running for 120 years or even longer after the end of the satellite life. The time dropped to less than 10 years.

Faced with the increasingly severe space garbage problem, humans have proposed a large number of solutions, and have many advantages blessings, and the effective departure sails are most hoped to realize industrialization applications!

Conclusion:

In 2021, the total number of aerospace launch in my country reached 55 records, ranking first in the world. In 2022, the total number of aerospace launch in my country will continue to maintain a trend of more than 60 times. As my country's aerospace launch activities are increasing, the governance needs of space garbage are becoming increasingly urgent. With the gradual deepening of the application practice of derailment sailing, a aerospace subdivision industry is being formed, and the Chinese plan that slows down space waste will gradually emerge!

references:

[1] Li Yide, Ji Weidong, Zheng Qi., 2019

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