Chapter 277 Skydiving
"Line up, don't rush, get on one by one, the first row gets on the No. 1 aircraft, the second row gets on the No. 2 aircraft." Li Xingyun stood among several Y-5 transport planes location, said loudly.
Fang Kai stood next to him.
Hold the roster.
Tick a ‘√’ for each previous one.
When it was Jiang Chen's turn, the three planes in front were already full.
He was the first to board Unit 4.
And Chen Xuanxuan is the last one.
Inside the cabin.
A skydiving instructor stood bent at the cabin door.
Whenever a student boarded the plane, he would reach out and give him a hand.
Wait until Chen Xuanxuan got on the plane.
When he saw that there was no one behind Chen Xuanxuan, he turned around.
He said loudly to the dozen students who were already sitting in the cabin, "Sit down, no loud noises are allowed, and follow the command in all actions."
That's it.
Then he pulled up the intercom and said to the crew in the cockpit, "The students have boarded the plane. Do you want to close the cabin door?"
"Zizi. You can close the cabin door."
When he heard the voice on the intercom, the instructor reached out and held the hatch.
Pull it in hard.
Click!
The hatch is closed.
The cabin suddenly became much darker.
A few more minutes passed.
The roar of the aircraft propeller sounded outside the cabin.
This is an aircraft that has started its engine.
Then the second, third, and fourth
These four Y-5 transport planes are like four soldiers who strictly observe discipline.
Four ‘people’ formed a line.
Slowly drove onto the runway from the apron.
A few planes stayed on the runway for another minute or two.
After receiving instructions from the tower.
The first Y-5 transport plane began to taxi and move slowly.
The speed is getting faster and faster.
After gliding for about a few hundred meters, like an eagle soaring high, it held its head high and flew into the sky.
A second plane followed.
Then the third one.
After the third Y-5 transport plane also took off successfully, the fourth Y-5 transport plane began to taxi slowly.
Inside the cabin.
There is no other sound except the sound of the engine.
As the plane taxied slowly, the fuselage began to tremble.
Sitting on an airplane is like sitting in the cabin of a tractor.
Continuous input and supply of high-performance aircraft fuel.
The aviation turboprop engine on the nose of the aircraft is running at high speed.
Boom, boom, boom~~~Boom, boom, boom
The three-blade propeller spun from slow to fast, accelerating.
A huge roar echoed around and filled the entire cabin.
Inside the cockpit.
A flight instructor sat in the captain's seat and piloted the aircraft himself.
The other two senior students were sitting in the passenger seat and in the back seat, busy completing various instructions given by the 'captain'.
The captain was seen holding the operating lever with one hand and gently pushing the throttle valve lever with the other hand to continuously add fuel to the aircraft.
When the pointer on the airspeed indicator pointed to v1.
The senior student on the co-pilot hurriedly said, "v1."
"Lift, lift the wheels."
The captain heard Word.
Immediately gently pull the lever back and up.
The nose of the Y-5 transport plane was immediately pulled up and climbed up at a small angle.
Not for a while.
The Y-5 transport plane had already climbed into the designated airspace, and then flew towards the parachute base more than 20 kilometers away.
There is a safe height limit when skydiving.
Not too high or too low.
There are two absolute limits for safe heights for skydiving: a minimum and a maximum.
It is called the maximum safety height and the minimum safety height. Generally speaking, the maximum safe height is based on the limit of atmospheric pressure that the human body can withstand.
Because the higher the altitude, the thinner the air, the lower the air pressure, and the lower the temperature, the less human physiology can bear it.
So generally speaking, the industry considers the maximum safe height to be around five thousand meters.
But this only refers to the safe height without protective gear.
If you wear oxygen equipment, cold-proof clothing, and use more professional skydiving equipment, you can challenge higher heights.
For example, extreme skydiving usually takes off at an altitude of 7,500 meters.
The minimum safe height is limited by the design of the parachute.
Taking into account factors such as the size of the parachute, opening speed, etc., if the skydiving height is too low, the parachute may not fully open, thus affecting the safety of the skydiver.
So generally.
The minimum safe height for ordinary skydiving is more than 500 meters.
If it is airborne troops, because the minimum safe height of military parachutes may be designed to reach 300 meters, the minimum safe height of airborne troops will be reduced to more than 300 meters.
Everyone knows.
Modern fighter jets all have ejection devices.
The so-called ‘ejection seat’ is a ‘parachute’ installed on the fighter seat.
If the pilot has a flight accident or is hit.
You can also use the ejection seat to eject out of the cabin and escape.
However, the minimum safe height of a fighter jet's ejection seat is more than 100 meters.
Below 100 meters, pilots will also be exposed to great risks.
Of course.
Both the minimum safe height and the maximum safe height are limited to ordinary skydiving.
Because ordinary skydiving and extreme skydiving are two completely different concepts.
For example, for low-altitude extreme skydiving, the current world record is 50 meters. That is to say, the lowest parachute opening record for low-altitude skydiving is 50 meters, which is only a dozen stories high.
Most people play like this.
I have already gone to see the King of Hell.
Not for a while.
This Y-5 transport plane has already arrived at the skydiving base more than 20 kilometers away.
It is said to be a skydiving base.
In fact, it is a farmland where crops have been harvested.
Xinyang is located at the junction of the North China Plain and the middle and lower reaches of the Yangtze River Plain, and the terrain is relatively complex.
There are mountains, hills, plains, lakes and swamps.
The core area of the 'Skydiving' base is a flat crop field, but there are also low hills and hills in the distance.
The hills and hills are lush and covered with trees.
But this ‘plain’ is very empty.
Except for the haystacks of straw, there are no obstacles.
Just right for skydiving.
Ugh!
Unless you are too unlucky and encounter air currents, you will be blown away to the swamps and lakes in the northwest corner.
This Y-5 transport plane kept circling and waiting in the sky.
below.
More than a dozen students in the first Y-5 transport plane had all been thrown out of the plane by their instructors and returned successfully.
The second Y-5 transport plane has also opened its hatch.
The students filed out one after another.
By the time all the students in the second transport plane were ‘thrown’ out of the plane.
The third transport plane followed immediately.
When the third transport plane began to ‘throw’ students out, the fourth transport plane also began to circle down.
The four transport planes cooperate very well.
As time passed, the atmosphere in the cabin became more and more tense.
Yes.
Although everyone has already had two skydiving experiences.
But now that my third skydive is approaching, I don’t want to become anxious.
Maybe only by jumping a few more times can you eliminate the fear in your heart.
Di~~~di~~~di~~~
At this moment.
A piercing alarm bell suddenly sounded in the cabin.
With the alarm bells ringing.
The cabin door was also slowly opened.
Seeing the open cabin door, everyone's breathing became more rapid.
(End of this chapter)