Because the earth is spherical and electromagnetic waves travel in a straight line, when the electromagnetic wave emitted by the radar is tangent to the arc of the earth, it is difficult to detect at a height below the tangent.
However, even so, Ye Fan didn't dare to be too blatant in the territorial waters, after all, there were radars specializing in low-altitude detection.
In addition, there are not a few radars in the deployment of actual applications, but many, with different distances between them, and the detection distances are cross-covered, thus forming a radar network.
Before getting out of the radar net, you still have to keep a low profile.
At this time, the flying speed of "Xuanyuan Sword" had already begun to slow down after it rushed out of the coastal waters.
After all, space-based weapons fly at several times the speed of sound, and the heat generated by air friction is naturally high and not low. Although a lot of heat insulation measures have been done on non-Newtonian liquid metal, it has been flying at full speed for a long time. Still can't stand it.
After all, non-Newtonian liquid metal is afraid of high temperature, and the high temperature produced by air friction is the best killer of this kind of steel.
"Well, keep flying at this speed, and you will be able to fly out of the South China Sea within fifteen minutes, and no one will be able to control us then." Ye Fan was also relieved and said.
He randomly found an office chair and sat down, shutting down the monitoring screen of "Xuanyuanjian".
After exiting the territorial waters and entering the middle of the high seas, the "Xuanyuan Sword" will rise straight up like a rocket, and will eventually float in the atmosphere for a 24-hour uninterrupted floating cruise in the high air.
At that time, if there is an emergency, "Xuanyuan Sword" can reach any place in the world within two hours and strike any target with precision.
....
"Now that the basic weapon is ready today, just build a few more." Ye Fan at this time was also thinking in his heart.
Although space-based weapons are easy to use and can strike targets in real time, they have a fatal shortcoming that they are very dependent on the network.
For example, the communication between Ye Fan and "Xuanyuanjian" basically relies on the satellite network. However, once there is a place that the satellite network cannot cover, the "Xuanyuanjian" will lose its function.
Although it will not be like in some science fiction movies, some unmanned weapons will automatically fall after losing communication. Although "Xuanyuan Sword" will automatically return to the voyage, it still cannot go anywhere freely anyway.
For example, in the sea, because the sea water will weaken the electromagnetic waves to the greatest possible extent, diving operations are currently impossible to achieve.
There are also places off the beaten track, such as the Amazon jungle and the Sahara Desert in Africa. Some areas cannot be reached by satellite signals.
"Wait, based on the deduction of origin, the prehistoric civilization that disappeared overnight, the Mayan civilization, was in the Amazon jungle 10,000 years ago.
Moreover, the deep Atlantic Ocean should still exist in the so-called continent of Atlantis, but after the ‘home’ was pushed away, the huge flood that caused it directly submerged Atlantis.
If you follow this logic to verify it, you should be able to infer what happened 10,000 years before history. Hey, the rocket launch center will have to wait until the science and technology conference is over. "At this time, Ye Fan was also thinking secretly in his heart.
"Master, our'Xuanyuan Sword' is being watched." At this time, Origin's voice suddenly sounded in Ye Fan's glasses.
"What's the matter?" Ye Fan also frowned, and then let Origin connect the communication with Origin.
At this time, after 20 minutes of ultra-low-altitude flight, "Xuanyuan Sword" continued to fly along the sea at ultra-low altitude. At this time, it had already flown out of the South China Sea, and began to circle and avoid radar detection in the territorial waters, and flew towards the South Pacific .
Because of the long-term high-speed flight, the heat caused by air friction increases, and the non-Newtonian liquid metal in the outer shell may melt.
So Ye Fan reduced the speed of Origin a lot, even slower than the propeller plane.
At this time, the holographic display on the glasses showed that there were three F22 fighter planes hovering at an altitude of several kilometers. They were three patrol planes cruising in the nearby aircraft carrier fleet.
F22 fighter "Goshawk" pilot: "Oh, what is this?!"
F22 fighter "Flying Bird" pilot: "I have never seen this thing, I think this thing is completely incompatible with aerodynamics!"
F22 fighter "free" pilot: "I'm trying to lock it, but I locked it twice and failed!"
"Report it to the Fleet Headquarters immediately. This thing is so weird. It doesn't even have any flight trails. It seems that the fuel engine is not used at all!"
"Slow flight speed, won't it stall?!"
At this time, the three F22 fighters were constantly hovering in the air, trying to lock the target, but Ye Fan's "Xuanyuan Sword" had already adopted a low-speed stepless change of trajectory at this time, and the route was extremely unstable, causing the fighters circling at high altitudes to be a little surprised.
It is important to know that some fixed-wing fighters must be able to fly smoothly at extremely high speeds. For example, some fixed-wing fighters must maintain a steady flight at a speed of at least 200kmh. If they are too low, they will stall and fall.
After all, if a large iron block weighing several tons is stalled, it will be rescued by pulling the head of the plane and turning the engine, while the wing will be broken, the spiral will drop, and the plane will be destroyed.
Therefore, the flight speed of general fixed-wing fighters has always been high but not low. Unless it is a low-altitude fighter, it will maintain a slow and steady flight in order to have more time to aim and pursue, such as A10 fighters.
"Oh! I finally succeeded in locking, and immediately send this information back to the headquarters!" At this time, the pilot of the "Freedom" finally locked the target after three attempts to lock.
"There was an order from the headquarters to shoot it down, and then take it back to study." At this moment, the "Goshawk" pilot spoke.
However, in the next second ~EbookFREE.me~ something surprised him happened before his eyes.
I saw that the "Xuanyuan Sword" rose directly into the air, suddenly rising from the vertical angle of a rocket launch. The speed was very terrifying, much faster than air-to-air missiles.
"These flies are so annoying, Origin, close the door and hit the dog." Ye Fan also spoke to Origin at this time.
"Confirming the order, the GPS navigation system in the relevant area is being shut down, and the terminal access point is forcibly intervening in the opponent's navigation battle map."
"The intrusion was successful."
At the same time, all GPS maps in this area were taken over by Origin, and the group was forcibly replaced.
"Dorafa Dream?" At this moment, inside a nuclear-powered aircraft carrier two hundred kilometers away, the top commander was taken aback while looking at the pattern displayed on the big screen, and then angrily smashed the water glass in his hand. On the desktop.
At this time, all the map screens and communication signal interfaces have all turned into a cute blue fat man smiling.