"Nelis, Nelis, Aurora requests takeoff." In a suit-like outfit and a fully supercharged flight helmet, test pilot Robert shouted in the radio.

At this time, he had already taken the runway under the towing truck. At the end of the runway, two engines had been ignited, and all kinds of instruments in front of him were working normally.

Behind him, another test pilot, Yorkson, sat. Both of them had years of flight experience and served in NASA. Although neither of them had really flew into space, they had completed all the astronaut projects.

Now, their plane will take off directly and enter suborbit!

"You can take off, I wish you good luck." The sound of the tower came from the headphones.

Robert released the brakes and pushed the accelerator all over. The two engines each burst out with thrust of more than 200 thousand N, pushing the fighter jet and gradually accelerating on the runway.

The thrust-to-weight ratio of fighter jets is not high, only about 0.6, which can only reach the thrust-to-weight ratio of some aircraft in World War II era. However, this aircraft is not used for fighting!

The aerospace helmet had only a narrow field of vision. Robert looked at the instrument in front of him and the speed had reached more than 200 kilometers per hour. He pulled up the operating lever, and finally, the plane raised its head and flew for a few seconds before flying from the runway.

"Aurora, Aurora, and the nanny are waiting in the airspace of No. 3." The sound of the tower came from the radio.

Nanny! This is a specially modified aerial tanker! In order to reduce the difficulties during takeoff, it did not take off with full fuel. Now, after taking off, it flew smoothly to the No. 3 airspace. The aerial tanker with navigation lights on is waiting in the scheduled airspace.

This kind of delta-wing aircraft is actually very difficult to operate. Although it has a telex system, Robert was still careful. He pushed the operating rod and finally got close to the point where it could be connected.

This kind of aerospace plane uses special liquid methane, and only this special tanker can refuel it.

After the fuel was over, Robert aimed at the course and issued a request to the base with the most anticipated one: "Nelis, request a suborbital flight test."

The first time, there are still many problems, so, just entering the suborbital, even if the experiment is completed.

"Yes, good luck to you." An echo came from the radio.

Suborbital flight! Robert opens the throttle and the two turbojet engines constantly absorb the atmosphere. With the help of oxygen, the aircraft is constantly accelerating and accelerating!

Soon, a shock cone came from the front, which had exceeded the speed of sound! Continue to accelerate!

When the speed reaches Mach 2, Robert toggled the switch. Under the control of the computer, the power of the turbojet engine quickly weakened. At the same time, the sharp cone in front of the engine's intake channel shielded the turbojet engine and had become a pulsed knock engine!

ignition!

"Bang!" In the combustion chamber, an explosive mixture of methane and air is filled with explosive gas. As the pulse is ignited, the high-temperature and high-pressure gas explodes from the nozzle after combustion, and at the same time, a knocking wave is also generated! This knocking wave is transmitted from the nozzle along the combustion chamber. When the gases leave the nozzle after combustion, the knocking wave rebounds from the front end of the combustion chamber and rushes out from the nozzle.

Then, when the stress wave also left the combustion chamber, only extremely thin air was left, and the next knock began again!

From the outside world, we can see that the operation of this kind of engine is not continuous. Every knock, accompanied by a huge roar, accelerated the entire Polar, and then, the second and third time.

Sitting in the cab, it feels like there is constantly sea water slapping your back! This unique engine can greatly improve work efficiency!

Pulse detonation engines, even in later generations, are also a new type of power. However, in fact, the specific research on this power can be traced back to the 1940s. The main mechanism of pulse detonation engines is to control periodic explosion waves to generate power. Research on knock waves can be considered as a preliminary investigation, and the German Hoffmann is one of the scientists in this field.

During the Cold War, the 1950s and 1960s were the introductory period for pulsed detonation engines, and feasibility study and experiments were conducted. Historically, by the mid-1980s, the US Navy Graduate School conducted experiments to a large extent to promote the development of pulsed detonation engines and confirmed that pulsed detonation engines with adjustable thrust could be developed.

Now, unlike in history, when you are desperate and under the threat of war, you have invested a lot of money and manpower. This engine has entered the practical stage!

The shock wave not only appeared on the engine, but also passed along the air to the ground. That night, many residents suffered from insomnia.

What's that sound?

For residents living near District 51, it is nothing to occasionally have strange things, but today's noise is too loud, making them unable to fall asleep quietly!

Shock, shake, if you don’t shake, you will fail! In the air, the two test pilots were also enduring this terrible feeling, and at the same time, the plane was also accelerating.

Mach 3, Mach 5, Mach 7!

The height is also rising! 30,000 meters, 40,000 meters!

The air is already quite thin, and the on-board computer system begins to close the front air intake duct, and at the same time, the liquid oxygen inside the carrier finally begins to be supplied.

The most important thing about a single-stage orbit spacecraft is to solve the problem of thrust-to-weight ratio of the spacecraft!

In the atmosphere, air can be used to participate in combustion to reduce the content of liquid oxygen that you carry. Only when you leave the dense atmosphere will you start to use liquid oxygen to help combustion!

At a height of 30,000 meters, you can see the edge of the earth. Now, as the altitude continues to increase, the diffuse reflection of the air is lost, and the surroundings are completely dark!

Through the porthole in front, you can see the vast darkness of the universe, with only the stars in the distance flashing with dim light, and at the same time, the cockpit began to become cold.

Continue to accelerate!

Mach 10, Mach 15, Mach 20!

As long as the speed exceeds the first cosmic speed, it will become an artificial satellite! And now, this space plane is about to reach its speed!

The height also rose to 80,000 meters!

The experiment was a complete success!

"If we continue to climb up, we will encounter a space laser cannon of the Soviets in orbit 120,000 meters. The result given by the computer will have a hit rate of more than 50%. "John in the rear cabin shouted.

The space laser cannon, the Spartac Sword hanging high above the Americans’ heads! The Aurora they are now experimenting with is the laser cannon used to deal with the Soviets!

Now, the opportunity is just right!

"There is still fuel left, we should be able to arrive." Robert said loudly. At this time, the ground was unable to communicate with them except for monitoring them. The US communication satellites are no longer able to form networks normally. It can be said that they now have strong autonomy!
Chapter completed!