The picture shows the Hall thruster
Not long ago, China successfully launched the Tianhe core module and started the construction of the domestic space station, but what many people don’t know is that the Tianhe core module is equipped There are many black technologies, including the Hall thruster . According to external sources, the Hall thruster used in the Tianhe core cabin has a thrust of only 80 mN, so it can only blow a piece of paper? But don't believe the news too much. In space, even if the thrust is only 80 millinewtons, China's Hall thrusters can still propel the space station. So how exactly is this done? It is understood that the environment in space is different from that of the earth. Even if only inertial force is used, the spacecraft can fly at a high speed. The 80 mN thrust of the Hall thruster is completely sufficient, and it even makes the docking of the space station more convenient.
The picture shows the Hall thruster developed by the United States
. In cutting-edge aerospace technology, the Hall thruster has always been a very powerful equipment. As early as the mid-Cold War, the space race
In span7span, the United States and the Soviet Union had already begun the research and development of the Hall thruster, but the United States was more optimistic about the future of the ion thruster, so the Soviet Union became the first country to use the Hall thruster in 1972. In 1991, the Soviet Union’s Meteor-1 weather satellite was equipped with Hall thrusters for the first time. Because the performance of the thrusters was very good, in the following decades, most of the Soviet satellites were equipped with Hall thrusters, even today’s Russia is still using the second-generation Hall thruster.
After the Soviet Union, the United States also began to use Hall thrusters on a large scale in the 1990s and gradually improved them. At present, the world’s largest thrust Hall thruster comes from the United States, and its thrust reached an astonishing 5.4 Niu, the power has reached 102 kilowatts. The reason why the United States and the Soviet Union are so keen on using Hall thrusters is mainly because Hall thrusters have more advantages than ordinary traditional thrusters.In terms of fuel consumption, the Hall thruster does not require any chemical reaction, but is propelled by the ion current ejected by electric energy. This also makes the Hall thruster very environmentally friendly, while also being very durable and has good micro-manipulation performance.
The picture shows the Hall thruster
In 2009, ESA launched a scientific satellite to detect the earth’s gravitational field and ocean circulation, which also requires the scientific satellite’s flight orbit to be low At the same time, it has to stay in orbit for a long time at 250 kilometers. If it is replaced with a general rocket engine, not only can it not stably stay at a height with air resistance, but the residence time is also very short. In order to overcome these problems, ESA is decisive The Hall thruster was chosen as the power of the scientific satellite. As a result, the scientific satellite worked in space for 2 years and only used 40 kilograms of xenon.
In the field of Hall thrusters, China started later than other countries. It was not until the end of the 1990s that China launched the research on Hall thrusters. It was not until the beginning of this century that China did research on Hall thrusters. Although the millinew-level Hall thruster started late, thanks to the rapid development of China’s aerospace technology at the beginning of this century, the Hall thruster has also been used on a large scale in various types of spacecraft made in China. The Hall thruster used in the core cabin of the Tianhe is the most mature millinew-class Hall thruster in China. It is more stable than foreign products in terms of micro-manipulation. At present, China is not only the only millinew-class Hall thruster. Propeller, just last year, China has successfully developed a cow-level Hall thruster with a power of 20 kilowatts.
The picture shows the Hall thruster·
In general, with the continuous development of China's aerospace technology, China will become stronger and stronger in Hall thruster technology in just a few years In time, China has achieved the leap in thrust from millinew to cattle level. This is a goal that other countries can achieve in more than ten years. From this perspective, China will develop a super Hall thruster that will compete with the United States in the future. , It's just a matter of time.
.-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-