How is Figure 154 used? There are two uses.

First, the training of astronauts.

According to the formal training process, astronauts must practice weightlessness on the ground to adapt to the weightless environment in advance.

But how do you create a weightless environment on the ground? Of course not, humans probably can't make anti-gravitational devices today.

But there's another way to do it, and that's to use Newton's second law.

Human beings are affected by gravity, and have a gravitational acceleration with the value of G, and as long as you find a way to make this acceleration temporarily ineffective, you will theoretically be in a state of weightlessness.

If an airplane flies to an altitude of 10,000 meters, then lowers the nose and dives downward, and maintains the acceleration of the descent rate with the same G, the people in the cabin will not be tied to the floor and can float into the air with a light kick.

The plane is constantly climbing and diving, and the trajectory is like a continuous parabola, each descent can provide 25 to 28 seconds of weightlessness time, and a flight can continue to do 20 to 30 parabolic movements.

In this short period of time, trained astronauts can simulate various emergency maneuvers and learn the essentials of weightlessness at the same time.

Of course, to be able to do such a flight must first be willing to build a high-performance aircraft, although the current civil airliners are similar in performance, but certainly no airline is willing to give you such a flight.

Airlines all hope that the aircraft will be safe and secure, try to prolong the life of the aircraft and fly for a few more years to make money, where is it willing to toss like this.

What, buy it yourself? At a price of 7 or 800 million, Lin Ju couldn't afford to sell it, so he could only rent it.

And Figure 154 is much cheaper, this kind of old antique Lin Ju inquired through the middleman at that time, and only opened a price of 3 million, note that it is RMB.

But he doesn't plan to buy it, he prefers to rent, because the Figure 154 is too old, not to mention the fuel consumption, and the maintenance is also very troublesome.

In addition, there is also an advantage of leasing that they can find highly skilled pilots, and they are reluctant to let pilots from civil aviation fly parabola like this, but for the military, it is commonplace.

The second use of Figure 154 is to transport space shuttles and to perform aerodynamic tests in flight.

The H1 space shuttle only has a rocket engine, so it cannot fly in the atmosphere, and its width exceeds the road limit, making it very inconvenient to transport.

The best way is to transport by air, install a bracket on the back of a large passenger aircraft or transport aircraft, and then fix the space shuttle on it, and use the way of carrying it for special transportation, which is fast and convenient.

In addition, the space shuttle also has to be tested for flight performance in the atmosphere before going to space, but what if it can't take off from the airport itself?

It is also carried to a high altitude by a large aircraft, and then separated from the transport aircraft, using the altitude to glide, and at the same time conducting aerodynamic tests.

What? Wouldn't it be okay to send the space shuttle high in the air with a rocket?

But how expensive is that, and a large aircraft flies once, including fuel maintenance personnel, at most hundreds of thousands and no more than one million, and the cost can be dozens of times lower.

The military base that Lin Ju contacted through the employees in the corner of the wall, codenamed Unit 96533, is the full name of the Ulan Hashan Repair Plant of the Air Force Logistics Department, which is a medium-sized mothballing base in China.

Lin Ju was greeted by a major from the base, who was basically the top leader here.

"Chairman Lin, on behalf of all the staff of 96533, I welcome you here!"

Major Wang Zhi was very enthusiastic, showing that he attached great importance to Lin Ju.

Because the Ulan Hashan repair shop is too hard, and there is no work to do.

It is said that it is to maintain aircraft, but the problem is that these old planes have been fucking out of production for thirty or forty years, and the production lines of aircraft factories are sold for scrap iron, where is the spare parts for maintenance?

Most of the time, everyone is organized to scrub and wash the aircraft, and if the newer J-7 dismantles a few more parts, it can be put together a good condition, and the idle and painful pension pilot drives it up for a walk.

Although they can be regarded as enterprises that can turn to civilian use, the question is what to produce in this hellish place of Ulanhashan? What to sell? Sell to whom?

There are a lot of herders, but their favorite ones are rice cookers and flashlights, and repair shops are not impossible, but with this demand, I am afraid that they will not even be able to earn back the man-hours of renovating equipment.

So when Lin Ju came to inquire through the channel, Wang Zhi was almost moved to cry, no matter what Lin Ju said, he agreed.

Finally, a large enterprise with a relationship with aviation, can such a customer be let go?

When Lin Ju entered the base, he was warmly welcomed by two columns of soldiers and workers, and his eyes were shining, which made him a little flattered.

But he didn't forget his purpose:

"Captain Wang, let's go and see the plane."

"Okay, no problem! Immediately take Chairman Lin to see the plane and see that our maintenance ability is definitely not blown. ”

Wang Zhi took Lin Ju to the parking area of Figure 154, and saw four airliners parked neatly in a row although they were clean but still could not hide the old ones.

One of them was surrounded by more than a dozen soldiers, and there were quite a few parts piled up next to it, including several engines held in place by wooden frames.

The two engines hanging from the tail of the plane have been opened, and the maintenance cover of the equipment at the end has also been opened, and several people are working.

"Mr. Lin, don't look at these Tu-154s are all old planes for more than 20 years, but they have only been retired for three or four years, and it is no problem to fly for another 15 years.

When we first imported, we bought a lot of accessories, and the rest can also be dismantled from other bases, which can definitely ensure that these four planes fly steadily and locally, and there is no problem at all in doing parabolic maneuvers!

This is by no means bragging, I can fly up and over myself. ”

Lin Ju looked at the fast and skilled operation of the ground staff and nodded, he believed what Wang Zhi said.

Huaguo's maintenance ability is a must, and it is not an exaggeration to say that it is the first in the world.

To what extent? There is not a single sludge in the pipes of the boiler room of the warship, and the tank is clean enough to lick it on the mouth.

The Amijia warship went out to cruise for half a year, and when it came back, it was the same as being abandoned for three years, while the domestic decommissioned warship was still clean and clean after ten years, and it was in the same state as when it came out of the dock.

Of course, the reason for this is that the Chinese army was too poor when it started, so poor that the commanders said that they wanted to be pants, and any slackness in weapons would become the target of public criticism.

With Wang Zhi's assurance, Lin Ju felt that there was no problem with the hardware.

"Captain Wang, I don't know how much it costs to rent these two planes?"

Hearing that Lin Ju simply began to inquire about the price, Wang Zhi gasped in his heart, and said that the big boss was refreshing, so he was ready to give money.

For some reason, the cost that had been prepared for a long time couldn't be spoken, but swallowed it into another sentence:

"Mr. Lin, two planes may not be enough for you."