SpaceX's Oriental competition

The Chinese have managed to launch Gravity 1, and they have done it the first time, without delays, this was on January 11; Gravity 1 is a solid fuel rocket, the only one of its kind, and plans to compete with SpaceX because it was launched from a ship in the Yellow Sea.

The Gravity 1 is a rocket that has a height of 30 meters with a thrust capacity of 600 tons and a total weight of 405 tons, it consists of three stages and four boosters, according to the Chinese company they say they are capable of organizing the launch of a Gravity 1 in less than 7 days and in some cases in just 24 hours, to put up to 30 satellites into orbit in a single launch.

The Gravity 1 rocket is the first and smallest of a family that will be made up of three members, there will also be Gravity 2 and Gravity 3, the latter will be twice as tall as Gravity 1, it will be about 60 m high with a thrust of 1,450 tons and a capacity to carry 30.6 tons to low Earth orbit or 8 tons to the moon.

Low Earth orbit is now the one with the greatest commercial use. It is where the majority of space satellites are being placed, including those of communications constellations such as SpaceX's Starling, and that orbit is also where the space stations that need to receive periodically are located. supplies, both the international space station and the Chinese space station, is therefore the most profitable orbit or destination and for which all space companies are currently competing.

Gravity 3 is slightly more capable than SpaceX's Falcon 9, which is the rocket it is currently using the most, but Gravity 3 would fall very short of the Falcon Heavy, also from SpaceX, since the company's rocket Elon Musk can practically carry twice as much cargo into space, however, the Chinese rocket has a feature that would make it more competitive in terms of price compared to SpaceX rockets and that is that it is solid fuel and this type of rockets are more cheaper to produce than liquid fuel ones like those from Space x.

Most liquid fuel rockets use liquid oxygen, with liquid hydrogen or kerosene, and engines that use methane are currently being developed. Liquid fuel rockets are more expensive, among other things, because their fuel is elements that, at normal temperatures, are in normal form. gas so they must be transformed into liquids and to do so they must be cooled and subjected to adequate pressures, so handling it is much more complicated.

Solid fuel rockets are not something new, they have been used since the beginning of the history of rockets, which by the way were invented by the Chinese just over 1000 years ago, a more recent example are the lateral solid fuel rockets that carried NASA's space shuttles, which were also reusable.

Solid fuel rockets are much simpler, they are cheaper to produce, they are more reliable and they also require much less maintenance. You could even load the rocket and have it stored for a long time, you could forget about it until you need it, something that This cannot be done with liquid fuel rockets. This advantage of solid fuel rockets would be ideal, for example, to have an escape rocket in an emergency situation that is always available at a base on the moon on Mars or at a station. space.

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