As the first spacecraft in the construction stage of the space station, "Tianzhou-4" assumes the role of a pioneer. As a supply ship in the busy construction stage, "Tianzhou 4" will send supplies for the "Shenzhou 14" mission, so what items are carried in Tianzhou 4?
This time, Tianzhou-4 carried a total of about 5 tons of cargo, which can be divided into three categories: including the food, clothing, and daily necessities needed by the three astronauts of Shenzhou XIV for 6 months in orbit; the consumables that supplement the core module of the space station; and various payloads for follow-up experiments. Among them, astronauts' living materials account for the largest proportion.
Wang Chunhui, chief engineer of the Tianzhou-4 launch mission test team of the Astronaut Scientific Research and Training Center: The total weight of the 175 cargo bags has reached 4.08 tons, and then it accounts for more than 70% of the entire cargo ship Tianzhou-4 freight, that is, 2/3 of the top 2 are the materials for the astronaut system to go up, the food is the big head, and the food is the big head. If you think about how much we have to eat every day in a family of three, in fact, the food is a big head, and clothes, because each multiplier group he has to bring clothes, shoes, you want his daily necessities to consume materials, then underwear what he has to change every once in a while, underwear, socks, shoes, these are all.
In addition, among the items carried by Tianzhou-4, there are 15 kinds of 23 environmental control bio-protection products for environmental monitoring.
Yin Rui, captain of the Tianzhou-4 launch mission test team of the Astronaut Scientific Research and Training Center: The Tianzhou-4 cargo spacecraft and whether it is docked with the Tianhe core module or with the other hatches of the node module, the negative pressure of the docking channel depends on the gas cylinders of our cargo ship to ensure. At the same time, because the astronauts finally have to open the hatch to enter here to pick up the goods, so we monitor its temperature and humidity, as well as our oxygen concentration, and the concentration of carbon dioxide.
According to reports, these materials are installed in the two-story compartment of Tianzhou-4 according to the category, and they must be loaded in batches before launch.
Yin Rui, captain of the Tianzhou-4 launch mission test team of the Astronaut Scientific Research and Training Center: This time at the launch site of the Tianzhou-4 cargo package, we were delivered in about 7 batches, first delivering the underlying cargo package, and then delivering the channel cargo package, and then there are some special application packages, you say that we have some applications in the future, such as holiday supplies, and these things, it is determined late, so it is delivered late. Negative 5 hours to install two packages of refrigerated consumables on the tower, the contents of these two refrigerated consumables packs are temperature-sensitive collection dishes for some biological agents and biological samples, and the temperature requirements should be stored at 2 to 8 degrees Celsius. Then we can load the whole ship after it has been powered up.
In addition to transporting goods, the transportation and supply of propellant is also one of the important tasks of the Tianzhou cargo spacecraft. The new model that Tianzhou-4 can share propellant with the space station has improved the life and efficiency of the space station.
Xu Xiaoping, deputy chief designer of the cargo spacecraft system of the Fifth Academy of Aerospace Science and Technology Group: In fact, if we look at it from the previous two shots, it is that our cargo ship itself uses about one ton of propellant, plus the propellant brought to the space station, in fact, we also have a lot of balances, and these balances can actually be used for the space station.
Source: CCTV news client