I ask you to build tractors, but you build rockets?

How to use Figure 154? Has two uses.

First, train astronauts.

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

But how to create a weightless environment on the ground? Of course not. Human beings today probably cannot build an anti-gravity device.

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

People will be affected by gravity and have a gravitational acceleration with a value of G and a vertical downward direction. As long as you find a way to make this acceleration temporarily ineffective, you will be in a state of weightlessness in theory.

If an airplane first flies to an altitude of 10,000 meters, then lowers its nose and dives downward while maintaining the acceleration of the descent rate at the same G, the people in the cabin will not be restrained to the floor and can float to the ground with just one pedal. in the air.

The aircraft continues to climb and dive, and its trajectory is like a continuous parabola. Each descent can provide 25 to 28 seconds of weightlessness, and a flight can continue to make 20 to 30 parabolic movements.

Using this short period of time, trained astronauts can simulate various emergency operation drills and learn the essentials of movement in weightlessness.

Of course, to be able to fly like this, you must first be willing to build a high-performance aircraft. Although the performance of current civil aviation aircraft is similar, there is definitely no airline willing to let you fly like this.

Airlines all hope that the aircraft will be as reliable as possible and try to extend its life and fly for a few more years to make money, but they are not willing to make such a fuss.

What, buy it yourself? Lin Ju couldn't even afford the price of 700 or 800 million yuan, so he could only rent it.

But Figure 154 is much cheaper. Lin Ju inquired through an intermediary for this kind of old antique, and only then offered the price of 3 million. Note that it was in RMB.

But he doesn't plan to buy it, and would rather rent it, because the Tu 154 is too old, not to mention fuel consumption, and maintenance is also very troublesome. If he buys it himself and then assembles the logistics maintenance team, he is not asking for trouble for himself.

Besides, another advantage of leasing is that you can find highly skilled pilots. Most of them are not willing to let pilots from civil aviation fly parabolas like this, but for the military, it is commonplace.

The second use of Figure 154: transporting space shuttles and conducting flight aerodynamic tests.

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

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

In addition, the space shuttle also needs to conduct flight performance tests in the atmosphere before going to space, but what if it cannot take off from the airport?

It was also carried by a large aircraft to a high altitude, and then unfixed and separated from the transport aircraft. It used the altitude to glide and conduct aerodynamic tests at the same time.

What? You said, wouldn’t it be possible to use rockets to send space shuttles to high altitudes?

But how expensive is the cost? And if a large aircraft flies once, including the fuel maintenance personnel, the cost is only a few hundred thousand and no more than one million at most, so the cost can be dozens of times lower.

The military base that Lin Ju contacted through the employee in the corner was code-named Unit 96533. Its full name is the Ulan Hashan Repair Plant of the Air Force Logistics Department. It is a medium-sized storage base in China.

Lin Ju was greeted by a major from the base, 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 valued Lin Ju.

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

They say they are maintaining aircraft, but the problem is that these old aircraft have been out of production for 30 to 40 years. The production lines of aircraft manufacturers have all been sold for scrap. Where can they get spare parts for maintenance?

Most of the time, everyone is organized to wipe and clean the aircraft. If the newer J-7 can be dismantled with a few more parts, it can be assembled into one in good condition. Retired pilots who are idle and tired can drive it up and take a walk. lock up.

Although they can be regarded as civilian enterprises, the question is what to produce in this ghost place Ulan Hashan? What to sell? To whom?

There are quite a few herdsmen, but what they may like most are rice cookers and flashlights. It’s not like repair shops can’t make them, but with this little demand, I’m afraid they won’t even be able to earn back the man-hours spent on modifying the equipment.

So when Lin Ju inquired through channels, Wang Zhi was almost moved to tears. No matter what Lin Ju said, he agreed.

Finally, there is a big company that is related to aviation. Can such a customer be let go?

Lin Ju entered the base and received a warm welcome from two rows of soldiers and workers. Their eyes were shining, which made him quite flattered.

However, he did not forget his purpose:

"Captain Wang, let's go take a look at the plane."

"Okay, no problem! Take Chairman Lin to see the aircraft immediately to see that our maintenance capabilities are definitely not lies."

Wang Zhi took Lin Ju to the area where Tu 154 was parked, and saw four clean but still vaguely old passenger planes parked neatly in a row.

There were more than a dozen soldiers surrounding one of them, and there were many parts piled next to it, including several engines fixed with wooden frames.

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

"Mr. Lin, even though these Tu-154s are more than 20 years old, they have only been retired for three or four years. They will be able to fly for another fifteen years without any problem.

We bought a lot of accessories when we first imported them, and the rest can be disassembled from other bases. This can definitely ensure that these four aircraft fly stably and perform parabolic maneuvers without any problems!

This is not bragging, I can fly it myself. "

Lin Ju looked at the ground crew's quick and skillful work and nodded. He believed what Wang Zhi said.

Hua's repair and maintenance capabilities are outstanding, and it is no exaggeration to say that they are number one in the world.

To what extent? There is no trace of sludge on the pipes in the warship's boiler room, and the tanks are clean enough to be licked.

Ami's warship went on a cruise for half a year, and when it came back, it was covered in rust as if it had been abandoned for three years. On the other hand, domestic retired warships, after ten years of storage, were still clean and in the same condition as when they left the dock.

Of course, the reason is that the Chinese army was too poor when it started. It was so poor that even the commander said he wanted to wear pants. Any slackness in weapons will become a public target.

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

"Captain Wang, how much does it cost to rent these two planes?"

Hearing Lin Ju's straightforward inquiry, Wang Zhi took a deep breath and thought that the big boss was so happy that he was ready to pay.

The cost that had been prepared long ago could not be said for some reason, but was swallowed and turned into another sentence:

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