Zhang Hao heard Nangong Zhi's inquiry, but he didn't look back. The main reason is... you didn't ask me directly.
The target of Nangong Zhi's inquiry was the commentators arranged by Dayang Group. These are actually graduate students during their internship period.
The commentator simply explained: "Actually, the Star Cannon weapon system is already accumulating energy.
On the other hand, because the starry sky cannon is powerful, its recoil force is also large. The effects of the forces are mutual, and the starry sky cannon and projectiles in a stationary state bear the same force.
Therefore, during the launch process, the Star Cannon body will retreat; which will undoubtedly result in the power of the cannonball not being able to reach its maximum.
Once the cannon body retreats, it will lose a considerable part of its energy; in addition, the retreat of the cannon body will shorten the actual effective length of the barrel, resulting in insufficient acceleration time for the cannonball, and even reducing the firing accuracy.
Under such circumstances, accelerating in advance allows the cannon body to have a certain speed and energy, which will offset the reaction force when launched, allowing the star cannon to maximize its power.
In addition, if fired in a stationary state, the cannon body will retreat due to recoil, which will cause its orbiting speed to be lower than the minimum orbital speed and be pulled back to the ground by the planet's gravity.
The starry sky cannon is heavy and requires a long acceleration time. Therefore, in order to prevent uncontrollable situations, we can only accelerate in advance."
After hearing this, everyone nodded. Even Nangong Zhi had to nod. Although these things feel very simple once you understand them, their importance cannot be ignored. Sometimes it is just a small oversight that leads to the failure of the entire campaign.
.
About 17 minutes after the rail gun accelerated, the voice of the person in charge at the front, Huang Mingshan, came from the observation room: "The energy storage is 100%, ready to launch!"
The next moment, everyone saw that the rail gun was accelerating in space and was gradually trying to escape the gravity of Tianyuan Star. It suddenly stopped. The originally beautiful light blue plasma engine tail flame behind it suddenly trembled and became chaotic.
As for the front of the giant cannon, nothing could be seen. There was no gushing flame like when the cannon was fired.
It was so quiet, and there was not even a sound in the space. If the cannon body hadn't suddenly stopped, no one would have known that the starry sky cannon had just completed its first launch.
A launch of 160 small high-power nuclear islands was completed in 17 minutes. Everyone is eager to see how powerful it is. Unfortunately, this rail gun wants to fly out of the star system. Such a powerful shell, as long as the Ocean Group has some normal brains
, it will not be used to attack planets in the galaxy casually.
A special rail gun shell weighing 50 kilograms has a designed flight speed of 500 kilometers per second!
To understand the speed of 500 kilometers per second, you can follow several astronomical figures of the current Ocean Group:
The first cosmic speed, which is the speed of gravity surrounding Tianyuan Star, is 25.3 kilometers per second;
The second cosmic speed, which is the speed of getting rid of Tianyuan Star, is about 36 kilometers per second;
Tianyuan Star’s revolution speed is 30 kilometers per second;
The third cosmic speed, the "minimum speed" of the aircraft launched from the orbit of Tianyuan Star reaches 16.7 kilometers per second. It should be noted that the so-called minimum speed is added to the revolution speed of Tianyuan Star itself. In other words, its absolute speed
is '30+16.7=46.7' kilometers per second.
This is still within the orbit of Tianyuan Star. If it were near Venus or even the Sun, the speed would be higher.
Then there is the revolution speed of the sun, which is 250 kilometers per second.
Now it is the fourth cosmic speed, the lowest is 120 kilometers; including the speed of the sun itself, it is 370 kilometers per second.
In other words, rail gun shells with a speed of 500 kilometers per second can theoretically fly out of large galaxies! As long as they are launched, they do not go against the revolution speed of the sun.
At a speed of 500 kilometers, it already has preliminary interstellar strike capabilities. Of course, the starry sky is vast, and at a speed of 500 kilometers per second, it would take six
A hundred years of time!
In six hundred years, the target has long gone to nowhere.
However, if you attack targets such as planets, it is completely feasible. The movement rules of the planet can be calculated.
However, no matter how powerful this rail gun is, its launch effect is indeed invisible. Even the eyes of Dongxu masters cannot capture small-sized items traveling at 500 kilometers per second.
Soon Huang Mingshan reported to Zhang Hao: The launch was successful. Next, he will conduct a simple inspection and launch nine times in succession; after nine times, a major overhaul will be carried out. The overhaul process is expected to take a month.
The first starry sky cannon still has an experimental nature, so it needs to be repeatedly checked, verified, collected data and accumulated experience.
After a brief inspection, the starry sky cannon fired for the second time an hour later. The direction remained unchanged, and it was fired in the direction of the Red River Civilization.
By the way, because the launch from Tianyuan Star to the location of the Red River Civilization is within a large galaxy, issues such as the movement of stars can basically be ignored. It can be regarded as a relatively static system.
In other words, the speed of the cannonballs of the starry sky cannon will fly at a speed of 500 kilometers per second in the void. However, the Red River Civilization is closer to the core of the large galaxy. If the cannonballs can fly to it, the speed will increase to 800 kilometers per second.
At a distance of 700 light-years, the cannonball is expected to take 3,300 years to fly across - if the cannonball encounters no obstacles along the way.
From this point, we can also see the advantages of the rail gun. If it is laser, particle technology, etc., if the flight distance is far, it will basically disperse by itself. But the rail gun can keep flying until it encounters the destined encounter.
That...unlucky guy~
After that, Zhang Hao and others no longer paid attention to the test of the starry sky cannon. It took almost a year, but in the end, the halo was not used during the final observation. It was a visual feast.
The most spectacular scene is the laser-launching spacecraft on the ground. A beam of light shoots straight into the sky, extending to the end of the line of sight. Even if it breaks through the atmosphere, because the laser contains a large number of particles, the laser still emits a faint orange glow.
Seen from a distance, it looks like a sky pillar lifting the spacecraft directly from the ground to space.
The tour is over, but the testing is still going on. Compared to those who just want to see the grand scene, there are also some people who pay more attention to the inside.
This kind of invisible, powerful weapon does bring a sense of security to everyone. Although I don’t know what level this technology belongs to in the Red River Civilization.
However, on the ground before, Dayang Group used the spaceship ruins of Liuli Island to test the power of the rail gun. At that time, the maximum speed of the rail gun on the ground was only 100 times the speed of sound, which is 50 kilometers per second. But such a rail gun,
But it can relatively easily penetrate the shell of the Liuli Island spacecraft.
Then, a speed of 500 kilometers per second should be enough to penetrate the Red River Civilization's spacecraft.
However, Zhang Hao is cautious. After all, in the past hundreds of thousands, or even two to three hundred thousand years, the technology of the Red River Civilization may have made some miraculous progress. For example, the creation of nuclear-grade materials!
Previously, the spaceship materials of the Xuanhuang civilization were at the atomic level. In fact, they can be regarded as a perfect structural material similar to diamond, and artificially strengthened.
But this material is ultimately an atomic-level material; and the atoms themselves are very 'empty'.
But if it is a nuclear-grade material, such as the material of 'water droplets' mentioned in the previous world, it will initially reach the point of being indestructible.
Although Zhang Hao also thinks that the Red River Civilization should be difficult to achieve. After all, both the Red River Civilization and the Xuanhuang Civilization are cultivation civilizations. Most of their explorations of the material world have only been superficial.
But this so-called ‘taste a little bit’ is also for advanced civilizations.
Toys for children of advanced civilizations may pose fatal threats when placed on ordinary planets. For example, automatic robot toys in the hands of children may have mutated into the intelligent technology of the Matrix in the past world.
Therefore, Zhang Hao asked scientific researchers to continue to improve the limit of the rail gun. If the speed of the rail gun can be increased to one-tenth of the speed of light, it should be able to travel across the entire galaxy.
In short, before encountering the Red River Civilization, everyone had to do their best to develop technology and improve the technical level and the power of military weapons as much as possible.
Because no one can afford to gamble. Once they lose, the entire Tianyuan Star will be enslaved or completely liquidated.
However, Zhang Hao had many things to do, and Dayang Group had even more plans. After giving rewards and encouragement to the staff in space, Zhang Hao hurriedly packed his bags and jumped from space...
Relying on the cultivation of Dongxu Realm, Zhang Hao experienced a real bungee jumping.
He landed directly from space to the aura layer; the true energy shield around him actually withstood the flames and impact when he landed. Finally, he entered the aura layer and used magic to stabilize his landing.
It only took less than twenty minutes for Zhang Hao to return to the Ocean Group headquarters from space.
After taking care of some government affairs, Zhang Hao came to the space center again the next day.
Here, a brand new flight tool is being built: the aerospace plane!
Since the success of plasma engine research, Zhang Hao ordered relevant technical personnel to start researching aerospace aircraft.
An aerospace plane is not a space shuttle. Aerial refers to aviation; Tian refers to aerospace. An aerospace plane can fly within the atmosphere and can even fight in space. This is amphibious technology!
The aerospace plane is more flexible and can take off from the ground and rush directly into space. If it takes off from the ground, it only needs a runway and no longer needs a launch tower.
The transmission tower is technically complex, expensive, cumbersome to maintain, has poor efficiency, and has weak carrying capacity.
In contrast, aerospace planes only need a runway; the maintenance of the runway is simple. And when aerospace planes take off, they can use the buoyancy of the air, and their carrying capacity is beyond imagination.
If there is an aerospace plane and the technology is mature, the cost of space transportation will be reduced from 4 yuan per gram to 4 yuan per kilogram, or even lower! The technical staff of Dayang Group have repeatedly demonstrated this.
So Zhang Hao pays special attention to aerospace aircraft.
At this time, the first aerospace plane was about to be assembled.