Design small-scale production of nanotechnology

2. The concept of nanometer was first put forward by American scientists in 1995. Scientists classify satellites into many categories according to their weight. Large satellites weigh more than 1000 kg, small satellites weigh less than 100 kg-500 kg, micro satellites weigh less than 100 kg, and nanosatellites weigh less than1000 kg. Nanosatellites are very small, only a little bigger than sparrows.

3. Firstly, the development cost of nanosatellites is low. At present, the average cost of developing a satellite per L kilogram is 80,000 ~ 654.38+10,000 dollars; The launch cost per kilogram of satellite is 2 1400 USD. Developing and launching a satellite with a mass of 1000 kg needs at least1000 million dollars, while the cost of a nanosatellite is less than1000 million dollars. Secondly, the development cycle of nanosatellites is short. At present, the period of developing a large satellite is about 10 years, while the development of a nano-satellite only takes two or three years, which is more suitable for the era of rapid development of science and technology. Thirdly, nanosatellites not only save launch and recovery costs, but also save orbital space. Fourth, nanosatellites can give full play to group advantages. Scientists are designing constellations made up of small satellites, whose functions make many big satellites cringe. Developing high-frequency high-speed broadband low-orbit constellation system and building spatial information superhighway will become a hot spot in 2 1 century. Because it is cheaper and easier to build than optical fiber communication, it is the main force in the information age. If 648 nanosatellites with different functions are arranged at equal intervals in geosynchronous orbit, it can ensure all-weather and all-day monitoring of any point on the earth.

4. Nanosatellites have broken through the traditional design idea of "multi-purpose, long-time work", instead of pursuing comprehensiveness, comprehensiveness and perfection, they advocate simplifying design and adopting mature technology and modular and standardized hardware. Therefore, its application prospect is very broad, and it will be widely used in communication, remote sensing, astronomy and many other aspects. In this way, some developing countries can also set foot in the research and development of nanosatellites, thus expanding the scope of satellite research and application. Nanosatellites will become the main trend of satellite development in the future, and its development will bring revolutionary changes to the development of space technology. We are looking forward to this day.