What training do American anti-cancer women fighters need to go through to join private space travel?

First of all, we need to understand that in the process of running to the moon, astronauts will bear great overload during the time when the spacecraft takes off from the surface to near-earth orbit. The following figure shows the acceleration curve of Saturn V from Apollo 1 1 from the surface to near-earth orbit [1]. It can be seen that in the process of about 700 seconds, the maximum acceleration of the spacecraft is about 4 g, which is four times the acceleration of gravity. In addition, astronauts have to bear a huge overload during their return to earth and entry into the atmosphere.

Under normal circumstances, the maximum limit that the human body can bear overload is between plus 9G and minus 3G. To be exact, the human body's ability to withstand overload in different directions is different. For example, when accelerating head-on, the human body has the highest ability to withstand overload. When accelerating downward, that is, when the G force is negative, the blood will concentrate on the brain, and excessive congestion will rupture the blood vessels in the brain, causing permanent damage. Because of this, the human body's tolerance to negative G force is obviously weak. The following figure shows the overload tolerance of human body in different directions in the book "Engineering Space Age: A Member of Rocket Science" [2], in which the horizontal axis is duration and the vertical axis is acceleration. It can be seen that the human body's tolerance to negative G force (green curve) is the lowest.

Therefore, the correct attitude is particularly important when spacecraft and planes take off. At the same time, it is also important to wear G clothes correctly. Inflatable and pressurized anti-load clothing can exert pressure on the lower body to prevent blood from pouring into the lower body under high overload, which makes the brain lack of blood supply. The picture below shows the astronauts sitting in the space shuttle cabin and wearing anti-load suits before the space shuttle Discovery performed the STS- 133 mission.

STS- 133 mission, flight training before the launch of the space shuttle Discovery.

Of course, adaptive training before departure is also essential, including high G training. Manned centrifuges are used to meet the high overload training needs of pilots and astronauts. I put this manned centrifuge? Three axes: throw, roll and spin? Put it down, and friends can estimate how many rounds they can last.

Generally speaking, healthy ordinary people can have the ability to complete the mission to the moon after scientific training and preparation. However, a space mission like landing on the moon can never be completed by anyone who is unprepared but strong.

PS: The old man in the last picture is the first American astronaut to fly around the earth, John? John glenn. 1998, he re-entered space at the age of 77, becoming the oldest astronaut in current history.