Combat jets are subjected to gravitational acceleration in a vertical state of up to 9g, so the more the pilot withstands gravity, the more advantageous he is in air combat.

And Orvis, as a former member of the special forces of the Air Force of the Moth Country, was able to withstand the test of 9 times the gravity of the manned centrifuge in its entirety, which is a very powerful symbol.

Because the human body can withstand different supergravity in each direction, when the roller coaster swoops down, people will experience 5 times the acceleration of the earth's gravity in a short period of time, and then people will feel dizzy and nauseous.

Numerous scientific studies have shown that the ability to withstand acceleration due to gravity depends not only on the force and duration of acceleration or deceleration, but also on the direction of the body.

Generally the most sensitive to the external force exerted in the direction of the foot, the body is subjected to 4 to 5 times the acceleration of the earth's gravity in the vertical state for 5 to 10 seconds, which will cause the phenomenon of narrow vision, after which the body will lose consciousness.

In this hyper-gravity environment, not only will a lot of physical strength be consumed, but if it continues in high gravity, a large number of microblood vessels in the body will rupture, and a large number of red spots will appear on the body. If you sit poorly or pay attention, you may cause cervical spine injury and lower body stroke in ultra-high gravity conditions, and this pressure also brings some occupational diseases to pilots, such as tail spine curvature or long bone spurs!

For ordinary people, the maximum limit that the human body can withstand under normal conditions is between plus nine times hypergravity to minus three times hypergravity, and when the positive g force is greater, the blood will flow from the head to the legs due to pressure and the amount of blood in the brain will drop sharply, at this time the carbon dioxide concentration will increase sharply, and due to ischemia and hypoxia, it will affect the visual organs and cause the so-called 'black vision'.

This symptom, almost everyone has a similar experience in daily life, that is, when people have low blood sugar, their eyes will be black, and they will become unable to see for a short time, this positional hypotension is more terrible than short-term hypoglycemia, and he will gradually fall into a coma, so as to lose control of the flight equipment.

Ovis is too aware of the various physical burdens brought by hypergravity, so when he heard Du Xiaosheng ask to turn on eleven times the supergravity, he grinned and sneered: "Look, within 50 seconds, Du Xiaosheng will definitely stop training due to shock." ”

As he spoke, he looked at Zhao Yunhan on the side with a smile, and said with a smile: "On the earth, water will flow in the direction of gravity. We, the pilots, must always use our blood to resist the super gravity brought by flying. ”

"This is not at all the limit that people can bear, in this gravity environment, the liquid in the human body will desperately rush in one direction, when the time comes, the ignorant and arrogant people will be the terrible rush of blood, burst the capillaries in the direction of gravity, and the human brain will be due to excessive hypoxia or congestion of blood vessels for a long time and cause permanent damage, the most serious is death due to severe damage to the brain, or the fragile internal tissues due to continuous high G force and rupture, causing severe bleeding and life-threatening."

As Orvis spoke, the entire manned centrifuge has gradually begun to turn.

The huge hum of the centrifuge turning is still deafening through the safety wall, like a primordial roaring beast, letting out a howl that penetrates all over the world.

Ovis said proudly: "Du will pay the price of vomiting and shock for his ignorance, but don't worry, beautiful young lady, our equipment is very advanced, once it detects the abnormality of his physical state, the machine will slow down and stop, and he will not be too seriously injured." ”

"Hahaha, this is the punishment he deserves for his arrogance."

Before Zhao Yunhan could speak, Nepodava on the side wrinkled her eyebrows and said, "Thirty seconds have passed, and the speed has increased to nine times the impact of the speed......

At this time, in the cockpit, Du Xiaosheng's headset came from the command center's prompt:

"The acceleration growth rate reaches 29 g/s, the maximum accuracy of continuous acceleration simulation reaches the -6th power order of 10, the aircraft amplitude is 57, the outdoor temperature is -47 °C, and the aerodynamic composite index is ......"

"Verify heart rate, verify brain waves, blood test is steadily rising, pupil focal length test confirms, no out-of-focus reaction ......"

"Driver, please reply if you receive it."

At this time, the huge rotational impact is accurately simulating the flight conditions after the spacecraft breaks through the sound barrier and reaches supersonic speed.

Under the huge nine-fold super gravity, Du Xiaosheng felt the physical experience of the spacecraft after entering orbit.

At this time, he has an internal vision image, and through the system, he can clearly see the body fluids and blood in his body surging from the lower limbs to the head, under the blessing of the powerful nine-fold super gravity, Du Xiaosheng only feels that his head is swollen and the intraocular pressure increases, this feeling is similar to a handstand on the ground, more like letting a strong man grab his legs and turn outward and slam in a circle.

The muscles of his body began to slowly deform due to centrifugal force, but the fainting reaction for ordinary people did not appear in his strong physique, which was far beyond ordinary people.

"It's okay, bear it, continue to rise." Du Xiaosheng's tone was very calm.

In the command center, a professor who participated in Du Xiaosheng's body research experiment back then, saw Du Xiaosheng's reaction, and said with bright eyes: "Can't be wrong, Du Xiaosheng's tolerance for super gravity is indeed far above the normal tolerance range." ”

"This will definitely be in line with the physique of the human Mars landing program."

An astronaut in charge of recording looked at the surveillance screen in the training room and asked suspiciously: "Professor, even if Du Xiaosheng can withstand it, what's the use?" The spacecraft is on a mission, and several astronauts act together. ”

"With an excellent pilot like Du Xiaosheng, in case of danger, he can completely let other astronauts sleep in the hibernation capsule, and he can carry out the driving mission by himself, or in the Mars exploration, he can pilot the spacecraft and land on the surface of Mars alone."

"Theoretically, walking on Mars will be easier than on Earth, because the gravity on the surface of Mars is only about 1/3 stronger than that of Earth (38%), and after going to Mars, the strength of our muscles is not reduced, and the burden required is reduced by 2/3, so it is easier! But in fact it can't, and it may be a bit heavier than the burden on Earth! ”

"The moon landing spacesuit you saw in my laboratory has reached 140kg, because there are various life-sustaining system needs, such as cooling cycle, air circulation, pressure maintenance, power supply and other equipment, although the conditions for us to land on Mars will be reduced accordingly, but the weight of 100kg of spacesuit will still cause a burden of far more than 20kg to astronauts."

"This sense of bulkiness and fatigue makes us extremely desperate to need a super strong warrior like Du Xiaosheng to contend with, so Du Xiaosheng is one of the important conditions for us to land on Mars under the current scientific and technological conditions! Do you understand? ”