The joint cruise is very large, at least in this part of the Northwest Pacific, which is eye-catching.

As soon as the two warships entered the Tsushima Strait, they attracted most of the attention of several countries in the region.

Especially the two countries on either side of the strait.

It's like a mouse seeing a cat.

Like a great enemy!

They have sent their main warships to follow and monitor.

For a time, in the corner of the ocean, battleships gathered.

Thousands of tons of steel are counted as white waves on the blue sea.

However, in fact, this level of cruising does not cause any major disputes.

After all, the relevant forces behind it have had a good relationship recently.

"It's going to change the future of warfare."

Zhang Xingyang excitedly stroked the landing gear of a huge plane on the field and said.

"Really?"

The accompanying visitors on the side didn't see much of how this thing could change the future war.

Although its shape looks very sci-fi.

Boasts a huge inclined delta wing wing.

At the rear are several large serrations to reduce the radar reflection area.

Its engine system is also more special.

Because the combat altitude is much higher than the original bombers, fighters, and so on.

So, it actually has two different engine systems.

An aero-engine system used to operate in the lower part of the atmosphere.

and rocket motor systems for working in the upper atmosphere.

Mainly because of the thin oxygen in the high altitude, if you don't use a rocket engine.

The problem of oxidizer in aero engines is a huge problem.

All kinds of advanced technologies have been applied to this bomber that has just been commissioned.

Therefore, the technical sophistication of this bomber was very high.

But again, it's very dangerous.

The advancement of technology also brings the problem of instability.

With so much advanced technology, the bombers stacked out of the stack are not expected to be very high in terms of stability.

"For this test flight, we only need serious flight performance."

Before the test pilot boarded the plane, Zhang Xingyang made a few special explanations.

The test pilots of this test flight were different from the previous fighters.

Because such a large bomber cannot be driven by one person.

So, this time it's a whole unit.

There were four people in total.

Compared with the current domestic main H-6, the number of crew members is already very small.

"Whatever the test flight looks like, I want to see you come back safely."

Zhang Xingyang said very calmly:

"Once you encounter a major problem, you can directly parachute to escape."

"Our escape system is newly developed, which can complete the ejection in the shortest possible time and ensure your safety!"

"If the bomber is broken, we can still reassemble it, but it will be too difficult to retrain a good test pilot once it is lost."

At this time, the situation in China is actually very different from when Zhang Xingyang and Song Tianxing tested the J-10 a few years ago.

The development of the past decade has brought more than just economic take-off.

There are also various technological rapid developments.

All this has led to the training of a group of crews capable of carrying out bomber test flights.

Measuring them by the same weight of gold is considered cheap.

"Report to the commander-in-chief, we will resolutely complete the test flight mission!"

The test flight team was very confident and said with great ambition.

"Then I wish you a triumphant return!"

After saying that, the four of them saluted directly to all the people present, and trotted into the bomber.

The dimensions of this suborbital bomber are very large, with a wingspan of almost 80 meters.

It's a real behemoth.

The crew members need to enter the fuselage through a telescopic ladder under the belly.

"Do you think the success rate of this test flight is great?"

The old chief, who was specially invited to visit, asked Zhang Xingyang in a low voice after the crew members boarded the bomber.

"They may not be particularly familiar with the internal equipment, but it's not a big problem."

Zhang Xingyang looked at the slowly taxiing bomber and frowned:

"What's the problem, in fact, the intelligent management system on the machine can also do some simple processing.

If it can't be handled, it will be sent to the equipment station for the crew to deal with. ”

After hearing this, the old chief was a lot more relieved, nodded and didn't say anything.

The suborbital bomber weighed a lot, with a maximum take-off weight of 210 tons.

The normal bomb load is 20 tons.

It has an internal magazine and can be arranged in a variety of different layouts.

Respectively, for missiles of different sizes.

Because the strategy of using suborbital bombers will be to stealthily penetrate the enemy's deep territory at high altitudes to carry out bombing missions at strategic points.

Therefore, what it can carry will basically be long-range missiles.

6 high-thrust aero engines spew deep blue flames at speeds visible to the naked eye.

Propelled the extremely heavy fuselage to glide down the runway.

The first test flight, and there were no missiles loaded.

So the take-off weight has decreased.

But even so, it took more than 1,300 meters to taxi before slowly taking off from the runway.

The gray-black stealth paint bomber looks like a huge peng.

After taking off from the airport runway, soar into the sky.

After circling around a few times, it turned out that there did not seem to be too obvious problems with the bomber itself.

The first and most important test began.

That is the flight altitude test.

Claimed to be a suborbital bomber.

At the very least, of course, it must be able to fly to suborbital altitudes.

Otherwise, it will be called an atmospheric bomber.

And the suborbital altitude, to say the least, is above 80 kilometers, or even 120 kilometers.

Of course, the first test flight did not set such high standards.

Fly over 80 km and reach the top of the middle layer.

"Do you think we will be able to fly to an altitude of 80 kilometers this time?"

The old chief asked in a rather calm tone.

His question is also the voice of everyone present.

That's a frightening number.

Prior to this, the altitude limit of jet fighters was 36,400 meters, created by the MiG-25.

That's a little over 36 kilometers.

It's not that the engines of the fighter planes can no longer fly.

It's just that the oxygen in the air is too thin.

The thrust of the engine dropped very dramatically.

After all, whether it is a turboprop, turbojet, or turbofan engine, it is all compressed by the compressor to act as an oxidizer.

Oxygen is thin, and there is no oxidizing agent.

Without oxidant, there is no thrust.

Without thrust, you can't continue to rise.

So this altitude is already almost the limit of jet aircraft.

"Whether we can reach an altitude of 80,000 meters depends on whether the flight switching system we designed can play a role."

Zhang Xingyang looked at the sky where only traces of clouds remained.

A glance at the data next to it shows that the height of the bomber is almost climbing in a straight line.

It has now reached an altitude of 20,000 meters.

Here is already the average fighter altitude limit.

"Victory and defeat are here."

Everyone present was a little nervous.

At this time, it was almost time for the rocket propulsion system to work.

A solid rocket engine that will push the plane upwards!

The all-nitrogen anionic salt burns ferociously in the combustion chamber of the rocket engine.

The tail of the bomber then spewed out orange flames several meters long.

The bomber slammed upwards as if it had been kicked by someone.

The test pilots in the crew had already undergone detailed training during the previous training.

This sudden feeling of pushing back still makes everyone a little uncomfortable.

Because everyone didn't expect this acceleration to come so quickly!

The overload reached 7 G's almost instantaneously.

If it weren't for the fact that they were all wearing anti-load suits similar to spacesuits.

And a lot of anti-overload training was carried out on the ground.

Now I don't know, I've already fainted.

In particular, the inclination angle of the aircraft is very large, and the eyes appear red almost instantaneously.

But fortunately, everyone still overcame many difficulties.

Continue to drive the experimental bomber towards the sky.

"I have already flown over the altitude line of 40,000 meters, which is considered to have passed the first difficult time."

Under the height of seeing the plane, it is not just Zhang Xingyang.

Everyone present breathed a sigh of relief.

There was nothing wrong with the process.

The rest of the puzzle is not so difficult.

"But beyond the stratosphere, the atmospheric conditions will be much worse, and there will still be a lot of challenges to reach the top of the mesosphere."

Zhang Xingyang looked at the rising bombers and poured a basin of cold water on everyone.

The further you go above the atmosphere, the cooler it gets.

At the top of the middle layer, the temperature is about minus 80 degrees.

This is a major test for any mechanical creation.

The crew members on the bomber feel like they are going through an ice hell right now.

On the porthole of the cabin, you can see ice flowers on the exterior windows.

If it weren't for the altimeter to alert them, the plane would still be in the process of ascending.

One must think that they are now heading for a sea of ice.

And it's sinking.

Everyone wears an oxygen mask to give their lungs plenty of oxygen.

At such a high altitude, the concentration of oxygen in the atmosphere is no longer enough for people to survive.

"Report to the Commander-in-Chief, Ghost One has reached the predetermined altitude, request instructions for the next step!"

Soon, their voices could be heard from tens of thousands of meters in the air.

"The next step is to test the radar stealth capability."

Zhang Xingyang gave the next task.

Suborbital bomber, an important reason why it is named Ghost.

It comes from its stealth ability.

It is able to hide itself in the ionosphere.

The ground-based radar that was first tested could not detect it.

Ground-based radars use long waves, although the detection range is relatively long.

But for flying objects at an altitude of tens of kilometers, there is actually no very good ability to distinguish them.

It was found after testing.

The radar reflection area of Ghost 1 is not even 0.1 square meters!

You know, it's much larger than the previous J-20 or the Attack-1!

The body length is more than 60 meters, and the wingspan is close to 80 meters!

Let's put it this way, a suborbital bomber is more than ten times the size of the J-20!

It is ten times larger, but the radar reflection area is very similar.

The main thing is to take advantage of the high degree of cheapness and the advantages of appearance design.

The large delta wing design itself will have a small radar reflection area.

"Did you feel anything uncomfortable during the flight?"

Before giving the order, Zhang Xingyang asked another question that was not very relevant to the bomber itself.

"Report to the command center, we all feel good."

After this, the opposite side clearly hesitated:

"It's just that it feels like the blood is flowing faster in the air?"

"I don't know if it's a delusion."

Zhang Xingyang glanced at the screen in the command center.

One of the screens shows the personal health data of four people.

The high-altitude suits they wear are able to monitor health data in real time.

And through the data link, it is transmitted to the ground at all times.

After taking a look, Zhang Xingyang is not a doctor or physiologist.

But it can also be seen that these data do not seem to be so normal.

In particular, the data such as heart rate and blood oxygen are much higher than normal.

"Don't worry too much, because you're taking pure oxygen right now."

Zhang Xingyang quickly came back to his senses and comforted gently.

"When you get back to the surface, you should be back to normal."

"Thank you, Commander Zhang."

After thanking each other, the call ended.

"What about our doctors?"

Zhang Xingyang frowned and looked at the assistant on the side:

"Go, call a doctor."

"Most of the doctors are still on standby in the infirmary and on the airport runway, I'll call them right away!"

With that, a young man ran out of the command center.

"Is there an abnormality in their health numbers?"

Looking at Zhang Xingyang, who was frowning, the old chief couldn't help but ask.

"It doesn't have to be caused by the high-altitude environment, maybe they are not suitable for inhaling pure oxygen in this environment."

Zhang Xingyang said while thinking about his few knowledge of human biology.

In fact, when manned spaceflight is carried out, whether it is a manned spacecraft or a space station.

None of the pure oxygen used, but a mixture of oxygen.

It is to prevent someone from getting drunk on oxygen.

But this high-altitude environment is different from space.

At this time, even the well-informed Zhang Xingyang was a little unsure.

Not to mention others.

"Report to the commander-in-chief, Chen Weimin of the medical team has come to report."

A military doctor in a blue military uniform shouted out of breath.

"Don't talk nonsense, you look at their vital sign data, is there a problem?"

Zhang Xingyang asked him directly in front of the screen.

Chen Weimin breathed a sigh of relief, and stared at the screen tightly.

A few minutes later, he looked up in the eyes of the big guys.

Puzzled, he said, "It looks a little similar to the situation we had in our previous high-altitude endurance training." ”

"Elaborate?" Zhang Xingyang asked.

At this time, the bomber was conducting long-range flight experiments.

The scheduled flight range is 10,000 km.

They have a lot of time now to hear what this is all about.

Chen Weimin thought about the wording:

"Actually, it has to do with the physiological limits of the human body."

(End of chapter)