5. Vestibule function detection

The next morning, everyone arrived at the assessment site and was stunned again!

The second round of assessment...everyone thinks it is a swivel chair?

But what is in front of you...is a swivel chair?

The assessment of this link is called swivel chair, and you have to play with both re-selection and final selection, but the requirements for meeting the standards are different.

During the test, the subject sat on the swing chair, fastened his seat belt, and placed his head in a groove. The doctor started the swing chair. As the swing chair rotated, the head swung left and right according to the prompt sound. He heard a "drip". The head turned once. After finishing, according to the regulations, he had to get up and walk to the seat. Sometimes he had to distinguish the direction, and he could not vomit or fall from the chair.

However, today's thing is obviously no longer the swivel chair when the re-selection is no longer the one used. Of course, it can also be called a swivel chair, but the structure is more complicated, the assessment is more difficult, and the requirements for candidates are higher!

Chen Fei was a little stunned.

But it was not just him who was stunned. Ninety percent of the students who came to participate in the selection were stunned.

But soon, Chen Fei's pupils shrank.

He inferred a lot from this small change in detail.

Chen Fei knew that this link actually monitored the candidate's vestibular function.

The vestibular organ is located in the inner ear and consists of three pairs of semicircular canals (front, posterior, horizontal semicircular canals) and two otolithic organs (elliptical sac and balloon). The semicircular canals feel the angular acceleration stimulation of rotational motion, while the otolithic organs feel linear acceleration and gravity stimulation.

The vestibular organs mainly play the role of perceiving the three-dimensional spatial positioning of the human body, maintaining body balance, and maintaining the stability of the visual object when the head moves.

Good vestibular function is of great significance to pilots and is a prerequisite for engaging in flight activities.

However, in the previous flight recruitment selection, even in the selection stage, the monitoring of vestibular function was done with ordinary swivel chairs, but this time it was changed to a more complex, more comprehensive, more scientific, and of course, another device with higher difficulty was also more difficult. This shows that the superiors wanted to select a group of better pilots from this group of flight students.

I have to admit that Chen Fei, who is not very talkative, made a very reasonable analysis and, also, very accurate, he has already achieved a slight ray of autumn.

With the leapfrog development of my country's air force's weapons and equipment, the fourth-generation high-performance fighter jets have been widely equipped with aviation troops.

At present, the more advanced fifth-generation fighter J-20 (also known as the fourth-generation aircraft) has also been equipped with troops in small batches.

In addition, there are rumors that the international community has reached a consensus that only more advanced fifth-generation aircraft can defeat invaders. Therefore, as long as the newly selected pilots of our army are relatively good, they may fly directly to the J-20 instead of starting with the J-7 or J-8 as before.

These new high-performance fighters all have four high characteristics such as "high overload, high overload growth rate, high angular acceleration, and high cognitive load", which puts higher requirements on pilots. Therefore, in the flight recruitment work, the selection and identification of pilot vestibular orientation functions must also be changed.

At the selection center, all the candidates were stunned.

Only Zhang Heng had a bright smile, but his smile was the kind of smile that was successful in his plan, which was a bit creepy.

"Don't be nervous, you have actually seen this thing, it's just a swivel chair. Of course, this is a multi-function swivel chair, developed by Shanghi University of Technology. It consists of a rotating platform and a seat that can be tilted. The rotation angular acceleration      10, the angular velocity    180."

Seeing that everyone's faces were gray and gray, Zhang Heng smiled and said mysteriously: "Tell everyone a message quietly. This multi-functional swivel chair was used for astronaut selection, and you can't use it even if you want to use it. This time, our flight recruitment bureau specially applied with the superior chief and went through many procedures. It was approved. Also, everyone knows Yang Liwei. He was also selected from a group of pilots through the selection of this multi-functional swivel chair. Everyone can enjoy the same treatment as our aerospace heroes. Aren't you moved?"

After hearing Zhang Heng's words, others didn't know, but Chen Fei just wanted to curse in his heart!

How can the multi-function swivel chairs specially used by astronauts be able to withstand these small panels?

The pilot's vestibular function requirements are indeed higher than that of ordinary people, and much higher, but compared with astronauts, it is really a witch!

Taking such a big killer for everyone to use is the rhythm of killing everyone!

At this time, most candidates, even if they don’t know much about this multi-functional swivel chair, also heard from every detail that the test was terrible, and their faces were a little pale.

Seeing that he couldn't fool everyone, Zhang Heng smiled and said seriously: "I'll introduce this selection to you below.

Our monitoring is called vestibular-autoneuronal nerve reaction symptoms detection. Under the stimulation of the swivel chair, sensitive people are induced to symptoms such as dizziness, dizziness, pale complexion, cold sweating, sleepiness, upper abdominal discomfort, nausea, vomiting, and vomiting.

In a word, we use this thing to screen out all those who are not suitable for being pilots, and select the best from them to focus on cultivating them.

This time, the degree of symptoms of vestibular-autologous nerve reactions was evaluated and classified according to the Graybiel's exercise disease number scoring method... Forget it, I won't say it's so professional, and you don't understand it if you say it. I will tell you directly what we will do."

After a pause, Zhang Heng demonstrated while introducing: "This Coriolis acceleration stimulation sensitivity measurement, that is, swivel chair inspection. The specific method is like this: After the subject enters the swivel chair room, he will apply gastric and electrocardiogram electrodes. Install blood pressure on the left arm. The subject blindfolds, sits on the swivel chair, and fixes the seat belt.

First do the left-right tilt test.

The swivel chair accelerates clockwise to an angular velocity of 180 at a rotational angular acceleration of 10 units. The seat tilts from the middle to the right 30 degrees, the seat tilts from right to left 30 degrees, the left and right angles 60 degrees, and the movement time is 2 seconds; stay in the left and right sides 1 second; 20 inclined movements are performed in total.

After the tilt movement is completed, the swing chair stops at a rotational angular acceleration of 10 units uniformly decelerates, and then starts the front-back tilt test.

The specific method of the front-rear tilt test is as follows: the swivel chair accelerates counterclockwise to an angular velocity of 180 at a rotational angular acceleration of 10 units. The seat leans back from the middle to 30 degrees, and then the seat leans forward to 30 degrees, the movement time is 2 seconds, and the residence time is 1 seconds. The front and rear angles are 60 degrees, and a total of 20 inclined movements are performed.

After completing the tilt movement, the swivel chair will slow down evenly at a rotation angle of 10.

During the examination, the electrogastric, electrocardiogram, blood pressure were recorded, and the symptoms of the exercise disease of the subject were asked and observed."

Speaking of this, Zhang Heng paused for a while and gave everyone some time to digest. After that, he continued: "The grading standard for stimulating symptoms of swivel chairs is level 1, complete 40 tilt movements, and symptom assessment of movement disease. 1,m   2; Level 2, complete 40 tilt movements, and symptom assessment of movement disease. 2,m   3,fs     ; Level 3, 40 tilt movements are not completed, and symptom assessment of movement disease. 2,m   3,fs    . In a word, you must reach level 2 to become a pilot. Of course, level 1 is definitely the best, so I hope that the students will have a few more level 1 in the test later!"

Soon, the assessment began.

There are three multi-function swivel chairs in the selection center, and three candidates are tested at the same time.

"Start!" Someone issued an order.

After hearing the instructions, the staff pressed the switch.

With a beep, the swivel chair began to rotate.

The candidate sitting in the leftmost swivel chair was obviously not good. After holding on for a while, he raised his hand and signaled that he could not do it.

Getting off the swivel chair, he staggered twice, and started to retching with a snoring sound.

Because he was impartial, he happened to bump into Chen Fei's direction, so Chen Fei hurriedly reached out to support him and immediately took a trash can and vomited him. Of course, he couldn't spit out anything, but just kept retching.

[You helped a weak classmate and automatically picked up the fallen vestibular function*1. Your vestibular function has been strengthened and your training experience has been enriched!]

Hearing this voice, Chen Fei was overjoyed.

He patiently helped the classmate recover, and he was so good that he was really fine that he hurried back to the assessment site.

"I'm lucky today, and I'm the second to last group to participate in the assessment... In other words, I have had many opportunities to gain experience. I hope there are more experts in the front and some more attributes!"

Chen Fei breathed slowly.

Soon, the second team member came out.

This team member is better than the one just now, but he has not met the passing standards. Before the test is completed, he can't hold on.

Chen Fei quickly held the other party's hand: "Student, there is a seat here, come here and sit here and have a rest!"

"Thank you!" the classmate said gratefully.

Chen Fei smiled and helped him and sat down.
Chapter completed!