How many satellites has China launched so far?
Satellites and their applications
1. How many kinds of satellites are there?
According to the orbit, artificial earth satellites can be divided into: low-orbit satellites with an orbital height of 200~2000 kilometers; Medium-high orbit satellites with an orbital height of 2000-20000 km; A geostationary satellite with an orbital altitude of 35,786 kilometers above the equator. According to the purpose, it can be divided into scientific satellites, application satellites and technical test satellites, among which application satellites can be divided into military satellites, civil satellites and dual-use satellites.
2. What satellite series has China developed?
At present, China has initially formed six major satellite series, including recoverable remote sensing satellite series, "Dongfanghong" communication and broadcasting satellite series, "Fengyun" meteorological satellite series, "Practical" scientific exploration and technical test satellite series, Earth resources satellite series and Beidou navigation satellite series.
3. What are the main uses of recoverable remote sensing satellites?
Returning remote sensing satellite is a low-orbit satellite, which has three main purposes: first, observing the earth and obtaining remote sensing information; The second is to conduct microgravity experiments; The third is the technical reserve of manned space flight.
4. How does the satellite return to the ground?
When the satellite returns to the ground after completing its mission, it must complete a series of actions, such as attitude adjustment, module separation, return cabin rotation, departure from flight orbit, opening beacon, opening parachute and returning to the ground.
5. How many generations of communication satellites have China launched?
So far, China has launched three generations of communication satellites. The first generation of communication satellites are two communication satellites launched in 1984 and Dongfanghong-2 practical communication broadcasting satellite launched in 1 February/986/day. The second generation communication satellite was launched on March 7th 1988,1988+February 22nd,1February 4th, 990 and199/65438+1October 28th respectively. The third generation communication satellite is Dongfanghong-3 geostationary orbit communication satellite launched by/KLOC-0 in May, 1997.
6. When was the first communication satellite in China launched?
China's first communication satellite was launched on 1984129 October, which was partially successful. This is an experimental communication satellite.
7. When was the Dongfanghong-2 communication and broadcasting satellite successfully launched?
1successfully launched the first geostationary orbit test communication satellite on April 8, 984? Dongfanghong II made China the fifth country in the world to launch a geostationary orbit communication satellite independently.
8. When was the Dongfanghong -2A communication satellite successfully launched?
The practical broadcasting and communication satellite Dongfanghong -2A was successfully launched on1March 7, 988. This satellite has greatly improved the communication and radio and television transmission conditions in China.
9. When was the Dongfanghong-3 communication and broadcasting satellite successfully launched?
Dongfanghong-3 is a medium-capacity broadcasting and communication satellite, which was successfully launched on May 2, 2002. This satellite has improved the international communication in China and the remote mountainous areas in the west.
10, how many Fengyun meteorological satellites have been launched?
Fengyun meteorological satellite series includes Fengyun-1 solar synchronous orbit meteorological satellite and Fengyun-2 geostationary orbit meteorological satellite. Fengyun-1 and Fengyun-2 were launched four times and three times respectively, which played an important role in weather forecast and meteorological research in China.
1 1 When was the FY-1 meteorological satellite successfully launched?
1On September 7th, 988, China's first meteorological satellite Fengyun-1 was launched by the Long March 4th rocket.
12. When was Fengyun-2 meteorological satellite successfully launched?
China launched the first geostationary meteorological satellite Fengyun -2A on June 1997 and officially delivered it to users on June 1997 and 12. On June 25th, 2000, Fengyun-2 B was launched again. On June 65438+1October 65438+September 2004, another Fengyun-2 meteorological satellite was launched.
13. which space physics exploration satellites have been launched by China?
Up to now, China has launched space physics exploration satellites, mainly the "Practice" satellite series. 197 1 successfully launched the Shi Jian-1 satellite on March 3rd. 1981On September 20th, Samsung successfully launched Shi Jian II, Shi Jian II A and Shi Jian II B.194 On February 8th, Shi Jian IV was successfully launched.
14. How many practical scientific exploration satellites have China launched?
* * * Eight satellites were launched, namely: 197 1 Practical No.1 launched in March; 1981September 20th was launched by Samsung with two birds with one stone: Exercise 2, Exercise 2 A, Exercise 2 B; 65438+ Exercise 4 went online on February 8th, 0994; Exercise 5 goes online in May 1999. On September 9, 2004, launch practice 6, a star and b star.
15, do you know anything about the practical scientific exploration-1 satellite?
On the basis of Dongfanghong-1 satellite, Shi Jian-1 satellite added eight space technology experiments and exploration projects such as solar power supply system. 1971On March 3rd, the Shi Jian-1 satellite was successfully launched by the Long March-1 rocket. The satellite has been in orbit for more than 8 years, and has sent back a lot of scientific detection and test data to the ground.
16, do you know anything about the practical scientific exploration satellite 2?
Shi Jian II satellite is a scientific experimental satellite specially used for space physics exploration. The satellite weighs 250kg, and its main body is an octahedron, with a circumscribed circle diameter of 1.23m and a height of1.1m. 198 1 On September 20th, China launched a Samsung rocket, and Shi Jian II was one of them.
17. What was China's first satellite?
1970 on April 24th, China successfully launched its first satellite? Dongfanghong-1, with a satellite weight of 173kg, is equipped with an "Dongfanghong" electronic music generator and scientific detection equipment. Its mission is to detect the density of the space ionosphere and the earth's atmosphere and send the relevant data back to the ground. Therefore, Dongfanghong-1 is a technical test satellite with space exploration properties.
18, how many earth resources satellites have China launched?
From 1999 to 10 in 2003, China launched three Earth resources satellites.
19. when was the first earth resources satellite launched in China?
199 10 10/4 China and Brazil jointly develop earth resources satellites? Resource-1 satellite was successfully launched in Taiyuan Satellite Launch Center.
20. How many Beidou navigation and positioning satellites have China launched?
From June 2000 to May 2003, China launched three Beidou navigation and positioning satellites.
2 1. What kinds of military satellites are there?
Military satellites refer to artificial earth satellites used for various military purposes. It can be divided into reconnaissance satellites, military meteorological satellites, military navigation satellites, military geodesic satellites, military communication satellites and interception satellites according to their uses. Reconnaissance satellites can be divided into photographic reconnaissance satellites, electronic reconnaissance satellites, ocean surveillance satellites, missile early warning satellites and nuclear explosion surveillance satellites. In wartime, some civilian satellites can also be used for military purposes.
22. Which five satellites were the first to hang in space?
(1) 1957 65438+ Soviet Union1A companion star with a mass of 83.6kg launched on October 4th.
(2)195865438+1October 3 1, American explorer satellite, with a mass of 8.2kg ..
(3 3) 10/A 42kg 196 165438+AI satellite launched by France on October 26th.
(4) 1970 19 On February 4th, Japan launched Otsuka satellite with a mass of 23.8kg ..
(5) Dongfanghong-1 satellite with the mass of 173kg launched by China on April 24th, 0970.
23. How many satellites have China launched?
From April 24th, 1970, when China successfully launched its first satellite, to June 24th, 2005, China has successfully launched nearly 100 domestic satellites, 6 spacecraft and 27 foreign satellites.
24. Which country in the world has mastered the technology of launching multiple satellites with one arrow?
198 1 On September 20th, 2000, China successfully launched three satellites (Shi Jian II, Shi Jian II A and Shi Jian II B) with the Storm I carrier rocket, which was an important achievement of China's space exploration and new technology test, making China the third country in the world to master the technology of launching multiple satellites with one arrow.
By the end of 2003, how many satellites had been launched in the world?
Since the former Soviet Union launched the world's first artificial satellite 1957 on October 4th, by the end of 2003, the world had successfully launched 5053 artificial satellites.