Hawking's concerns are not unfounded.

When a ballistic missile is 'fired' underwater. Submarines are generally at a depth of 30 meters. Sail at a speed of about 2 knots. The missile is placed inside the launch canister. The launch canister is mounted vertically in the middle of the submarine. Some are inside the pressure-resistant housing. Some are located between the pressure-resistant shell and the non-pressure-resistant shell. Generally, each boat carries 12~24 missiles.

At a depth of 30 meters. The water pressure outside the cap of the launch cylinder is subjected to about 3 atmospheres. Therefore. It is very difficult to open the lid of the cylinder. It is necessary to pressurize the cylinder with high-pressure gas first. After making the pressure inside and outside the cylinder roughly equal. The lid can be easily opened.

In order to prevent a large amount of seawater from pouring into the missile 'firing' barrel when the lid is opened. A layer of watertight diaphragm is specially installed on the barrel mouth.

When 'shooting'. The upper cover of the missile launch 'firing' barrel is opened. Since the inside of the 'ejection' tube is a watertight and airtight structure. It is aerated and filled with a small amount of seawater. Equal to the sea pressure. There is no pressure difference. The sea will not be able to enter. The gas in the barrel will not overflow the water surface.

After receiving the command to 'shoot'. Electrostatic squib initiation. Ignite the gas generator. The high-temperature and high-pressure gas produced by it is sprayed from the bottom of the 'shot' cylinder. Driven by a reaction force. The missile will penetrate the watertight diaphragm and push straight up the outside of the barrel.

The missile after the barrel is boosted by the first stage rocket. After about twenty or thirty kilometers of flight. The 2nd stage rocket carries out a relay boost. Then push the missile into outer space. After the flight according to the predetermined ballistics. Re-entry attacks on targets.

A missile weighing more than a dozen tons will cause at least two effects after leaving the submarine: First, the stability of the submarine will be damaged. At this time, seawater must be immediately poured into the 'shot' cylinder. to make up for part of the bullet weight; At the same time, the submarine equilibrium tank also 'pumped' water to make up for the equilibrium and maintain the stability of 'sex'.

The second is the recoil at the moment of 'shooting'. tends to make the submarine sink slightly. As in "George? The USS Washington submarine launches its first Polaris A1 missile. It sank 4 meters. But there is no danger to the submarine.

Originally, the United States used the method of ignition after the water to launch 'launch' submarine-' ballistic missiles. That is, when the missile flies from the water surface at an altitude of 15 meters ~ 25 meters, the 1st stage rocket begins to ignite.

Later, it was changed to underwater ignition. That is, after the missile is 'fired' off the boat. Ignition at a safe distance. This ensures that the missile is out of the water. There is a huge vertical upward movement of thrust. It will not be affected by the complex wind and waves on the water surface.

The greatest danger during this period comes from the safety of the ballistic missile itself, if it self-destructs, the entire nuclear submarine will be destroyed in one fell swoop. In addition, there is the shock 'wave' of ballistic missiles, which can easily cause nuclear submarines to sink or capsize.

Fortunately, Hawking is very confident. The old American nuclear submarine is still tried and tested . Although in the end of the world this nuclear submarine was attacked by a tsunami. But after careful inspection. There are no major flaws with nuclear submarines .

"I hope this launch goes well." Hawking couldn't help but whisper a prayer.

Three nuclear warheads were unloaded. The nuclear warhead with a slight leak. It was packed into a huge lead bucket. Transported by tugboat to the vicinity of the Mariana Trench in the Pacific Ocean. Thrown into the sea. 10,000 meters of trenches. will be the graveyard of that nuclear warhead . As for the harm of nuclear leakage. It's not in the consideration of Li Baoqiang and others.

The remaining two nuclear warheads were discreetly transported . The place of storage is known only to a few people.

December 12 15:01. A water area in the East China Sea. The water depth is one hundred meters.

Thirty meters of water depth. The USS Ohio nuclear submarine is sailing at low speeds.

Ten minutes before the 'shot'. The whole crew of the boat entered the firing position.

All kinds of mechanical and electronic equipment in the cabin are working nervously. The lights on the various display tables are constantly flashing. The "hissing" sound of inflation and exhaust is intertwined with the beeping sound of electronic instruments. It also adds to the tension of the "pre-war" atmosphere.

“…… 5, 4, 3, 2, 1. Captain Stephen Hawking decisively gave the order.

The submarine shuddered up and down. The rocket leaps out of the water. Like a dragon breaking through the water. After splashing a fire on the water, it soared into the blue sky. Piercing the sky. Flying beyond the atmosphere......

Throughout the 'ejaculation' process. The nuclear missile rocket flies through the underwater stage, the control stage, and the passive stage. Accurately send communication satellites into outer space at a distance of two thousand kilometers.

"Running fine."

"Into the atmosphere."

"Damn. I can't see it."

"The radar observations are good."

Not far away from an observation boat. Researchers are eyesighting. Optical Instruments and Radar Observations.

The current state of science and technology can only use these three means. Observe whether the rocket launches normally.

Just what I've seen so far. The ballistic rocket launched a successful 'launch' into the average. As for whether it can reach the predetermined orbit in outer space. Whether the satellite can be released. Can the satellite carry out its work. Everything is unknown.

Verify that the launch was successful. Whether the satellite is working properly. The current stage. In the incomplete technological chain of the end times. Only ground signal testing can be relied upon.

Because the working principle of the satellite communication system determines that this verification test can only be tested by such a means.

The satellite communication system consists of three parts: the satellite end, the ground end, and the user end.

The satellite side plays the role of a relay station in the air. That is, the electromagnetic 'wave' sent by the ground station is amplified and then sent back to another ground station. The satellite star includes two major subsystems: the spaceborne equipment and the satellite parent body.

The ground station is the interface between the satellite system and the terrestrial public network. Ground users can also enter and exit the satellite system through the ground station to form a link. The ground station also includes a ground-based satellite control center. and its tracking, telemetry and command stations. The client terminal is a variety of user terminals.

When the communication satellite enters the predetermined orbit, according to the program, it will automatically open the solar sail to receive the energy from the sun, and the program inside the satellite will automatically start to work to receive and relay the signal from the ground.

At the same time, Shangguanyang in Nanjing started making calls to an Inmarsat, while another Inmarsat phone in Kyoto was held by a researcher, nervously waiting for an incoming call.

Shangguanyang began to call another maritime satellite phone, and the dialed signal was 'launched' to a communication satellite in space, and the communication satellite successfully received the signal and relayed it to the ground, and the maritime satellite phone in the hands of the researchers at the Kyoto ground station successfully rang. The two sides exchanged phone calls and greeted each other.

The call was successfully reached. Several tests in quick succession were also successful. The sound is clear. Works well.

The remaining two months. The USS Ohio nuclear submarine has come and gone to Zhoushan several times. Two other communication satellites were launched. All have been successful.

So far. In the Northern Hemisphere sky. Three communications satellites. Plus the ground console station in Kyoto. There are also two hundred hand-held and vehicle-mounted Inmarsat telephone personal terminals. It formed the world's first satellite communication system since the end of the world.

Li Baoqiang holds a maritime satellite phone developed by the Wuhan Research Institute. What a bulky "Big Brother" has successfully talked to the wives at home. And said some 'private' whispers.

Li Baoqiang asked Shangguan Yang. Whether this kind of call can be kept private. Shangguan Yang smacked Li Baoqiang on the phone and said, "You have to pay attention. At least the staff at the ground console station will be able to listen to your calls."

Li Baoqiang gasped: "'Milk' 'milk'. It seems that the convenience is the speed of the maritime satellite phone, and the confidentiality of the radio station is the benefit."

After consulting with the commander of the Tao Army. This set of maritime satellite communication system is named "Huamei Communication System".

Because of the success of this system. It condenses the efforts of science and technology and personnel of China and the United States.

Inmarsat system construction is busy. Although in the case of the end of the world when the chain of technology is broken. I'm still bold enough to get it. And it worked.

This incident made all the people work hard. That's hope. Satellite phones are all up to work. IPTV. Mobile phone. Wait, will the technological civilization of the previous life be far away.