2. Europe: At present, the most successful commercial launch vehicle in Europe is Ariane rocket series. Since its inception, Ariane-1, 2, 3, 4 and 5 have successively entered the commercial launch market, and currently Ariane -4 is mainly used. Ariane -4 is a three-stage rocket and was put into operation in 1988. According to the different bundled boosters, it has six models with different carrying capacities, and its geosynchronous transfer orbit carrying capacities are 1.9, 2.6, 3.0, 3.2, 3.7 and 4.5 tons respectively. The main reasons why it sells well are large thrust, high reliability, timely delivery, moderate price and high accuracy in orbit, so the demand exceeds the supply.
3. United States: The rocket lineup is huge. At present, the commonly used medium and large rockets are Delta -2, Cosmos -2 and Hercules -4. Delta-2 is a three-stage rocket with a low orbit carrying capacity of 5. 1 ton and high reliability. 1997 ~ 1999, Iridium and global satellites were successfully launched, and GPS-2R was also launched. However, the United States has now developed a Delta -3 rocket with a low-orbit carrying capacity of 8. 1 ton. Unfortunately, the first two launches from 1998 to 1999 failed, which was a bad start.
4. Ukraine: Ukraine's launch vehicles mainly include Zenith-2, Cyclone-2, Cyclone-3 and missile-modified Dnieper rockets. Zenith II failed to launch an arrow on1September, 1998 10, and its reputation was greatly reduced.
5. China: China's Long March rockets include Long March 2C, 2D, 2E, 2F, 3A, 3B, 4A and 4B. The Long March II series is mainly used to launch low-orbit spacecraft, such as recoverable satellites, iridium satellites and shenzhou spaceship. The Long March 3 series is mainly used to launch geosynchronous orbit satellites, such as Mabuhai satellite and Zhongwei-7 satellite. The Long March 4 series is mainly used to launch orbiting satellites, such as Fengyun-1 satellite and resources-1 satellite.
6. Japan: Japan's M-5 is the largest solid rocket in the world. Two launches were successful, and the third launch failed in February 2000 10.