Yu Lao said: "The ultra-long teleportation array can be used as the preferred project, and a space vehicle called "Space Hub" is also being developed, with the goal of sending "300 tourists" to geosynchronous orbit at a time. ”

A space elevator is roughly made up of the following parts: a ground base, a solid material graphene, a space station, and laser thrust.

The ground pedestal is where the space elevator departs, where visitors and space building materials take to the skies. Since the space station is set in a geosynchronous orbit 36,000 kilometers above the ground, this ground base will also be located on the Earth's equator, otherwise the elevator will be crooked. The teleportation array is connected to space, and the connectors may be rigid or more likely flexible. Graphene, a more robust material, is designed to be less costly and more reliable. The material is made of the strongest, carbon nanotube material.

The space station, located at an altitude of 36,000 kilometers above the ground, is the end point of space travel, and elevators will transport passengers and building materials to it. Propelled by electricity or "laser thrust", it can carry people and cargo, and it takes a week to get people to the geostationary orbit space station.

Yu Lao communicated these theories with Tianyi, carbon nanotubes are the strongest material that human beings can make, it is much lighter than steel, but the tensile strength is 100 times that of steel! It seems that it is the ultimate ideal material for building ladder cables. Carbon nanotubes can withstand a tensile force of 200,000 N per square millimeter, and a carbon nanotube with a diameter of 5 cm and a perfect defect can withstand a tensile force of about 40,000 tons.

Yu Lao said: "Now Fengming Island can make the longest carbon nanotubes, which are only within a few hundred meters. As long as a large amount of graphene is extracted from the material, tens of thousands of kilometers of cables can be made in the future, and its tensile strength can be increased by 20 times. ”

Tianyi asked, "How about thickening the cable? Is it okay to increase the cross-sectional area by 20 times?"

"As long as the tensile strength is increased, its weight is magnified in equal proportion. If the stretch is not enough, it will also be pulled off. If the tensile strength is sufficient, it can fully bear the weight of the cable, and space is a vertical distance of tens of thousands of kilometers. The geosynchronous orbit satellite, which feels that it is absolutely stable, can be left alone as long as it is positioned in an orbit at an altitude of 36,000 kilometers. A space city with a mass of 10 million tons, which operates in geosynchronous orbit, both from a technical point of view and from an economic level, is possible in the foreseeable future, a huge space orbit city and ultra-long-distance transmission. Yawen said at this time.

Using solar energy and a perpetual motion machine with backup nuclear reactor fuel, the solar-powered aircraft can begin its permanent flight journey. Long after the invention of the airplane, the sky above the earth has never been quiet. From propeller planes to jet planes, from small single-seater planes to large passenger planes carrying hundreds of people, from carrying rifles to modern stealth fighter-bombers, new types of aircraft have emerged one after another, enriching the stage above the earth and extending the dream of human flight.

However, traditional aircraft need to consume a lot of fuel when flying, due to the limited fuel load. Nowadays, the time and mileage of a voyage are greatly limited by traditional aircraft. And due to the thinning of the air at high altitude, the engine power decreased, and the flight altitude was also limited. In order to solve this problem, an airplane powered by solar energy came into being, and whether it can realize the dream of human beings to stay in the air for a long time.

Yu Lao said: "Solar energy can provide endless heat, which can be unaffected by day and night and climate change. Solar cells that convert the heat energy of sunlight into electricity and store it can provide a stable amount of energy that can be stored. Solar cells use low-cost silicon, and advanced solar cells include thin-film, polycrystalline silicon, and multi-bandgap. They are less costly, more efficient, and more resistant to radiation. ”

The solar cells of light aircraft are generally 125 microns thick, the seal thickness is 50-100 microns, the covering layer is 25 microns thick, and each kilogram of solar cells can generate 200 watts of electricity. If ultra-thin (5 microns) potassium arsenide is used for solar cells, the output will be higher. Optical devices and structures made of composite materials are capable of providing 2,570 watts of power. The specific power is 60 watts per kilogram of mass.

The solar vehicle uses solar radiation as the propulsion energy source, and the power plant is composed of a solar cell pack, a DC motor, a reducer, a propeller and a control device. In order to obtain enough solar energy, the wing area of the aircraft is larger. Yu Lao developed the "Fengming Aircraft" is the use of solar aircraft, the wingspan is 44.3 meters, the empty weight of the aircraft is 9,000 tons, and the upper surface of the wing and horizontal tail is pasted with a total of 16,128 silicon solar cells. It can output more than 300,000 watts of power under sunlight. The average speed is 5,400 kilometers per hour, and the range is 290,000 kilometers. But at this time, the solar-powered aircraft was still in the experimental stage.

On the basis of the development of the "Fengming Aircraft", Yu Lao developed a more advanced solar-powered aircraft "Dreamer". The Dreamer is made of carbon fiber composites, some of the landing gear is made of off-road bicycle wheels, and the entire aircraft weighs only 590 tons and has a fuselage length of 400 meters. The movable wing reaches 275 meters when fully extended. The Helios fuselage is equipped with 140 propellers, powered by solar panels on the wings.

Transported to the sun and wind, the Fengming was equipped with 65,000 solar panels and remotely controlled by two pilots on the ground. During the 10 hours and 17 minutes flight, the "Helios" reached a target altitude of 22,800 meters. The researchers predicted. The Dreamer can fly up to 30,000 meters in the air, more than three times the altitude of jet airliners.

Solar-powered aircraft fly day and nightTheoretically, solar-powered airplanes avoid the burden of traditional on-board fuel. Able to fly continuously in the air for at least one night, several weeks, or even longer. Find the best way to accumulate and conserve daytime energy for night flights. This in itself is an important problem in the further development of solar-powered aerial vehicles.

One of the most striking aspects of the solar-powered aircraft is the control system, and the Fengming Island Technical Research Institute is developing a robotic device that can automatically complete the control task. Pilots can also wear a fully computerized flight vest and feel the flight status of the aircraft through their bodies. A change in the dynamic pressure of a wing can cause a certain percentage of pressure change in the corresponding part of the pilot's body. Similarly, the aircraft can sense the person's self-perception if the pilot is tired, nervous, or has other adverse reactions. The corresponding equipment can notify him in time, so that it generates sufficient attention.

Most of the world's general-purpose aircraft are powered by air-breathing engines. As soon as the air at high altitude is thin, the engine power decreases. Therefore, it is difficult to further improve the flight altitude and endurance of existing aircraft. And the solar-powered aircraft can make up for these shortcomings and fly higher and farther.

Nuclear power is the use of controlled nuclear reactions to obtain energy, which gives power, heat, and electricity. The Fengming Island Science and Technology Center also launched a nuclear-powered tank development program. There have also been many breakthroughs in nuclear power, and not long ago the nuclear submarine of the country was captured. After the veteran Yu finished talking about the power of the nuclear submarine and Tianyi, Tianyi's eyes lit up.

Tianyi put forward his own launch thinking, saying: "In addition to nuclear submarines, nuclear-powered nuclear-powered aircraft carriers and nuclear-powered aircraft can also be developed. For example, nuclear power and trains were combined to create a nuclear-powered train. ”

Yu Lao nodded and said: "These are also in the experiment, and some drawings are already being planned." The nuclear-powered train is currently designed, and this nuclear-powered train is very different from the traditional train in terms of both appearance and interior. The Super Train is 190.5 meters long and 12 meters wide, making it five times as wide as a regular train. The maximum speed can be as high as 600 kilometers per hour, which is more than double the speed of a powered train. ”

"The extra-wide body gives a lot of space to the nuclear-powered train, so it is also very luxurious in terms of the construction of the internal facilities, which have all the facilities to meet the leisure and entertainment needs of the passengers in their daily lives. This includes swimming pools, shopping malls and cinemas, and much more. However, it is still being planned. However, now that various materials are maturing, nuclear power technology is gradually maturing. Nuclear-powered trains will also be accelerated, and with the availability of technology and funding, they will be developed in a short time. ”

In order to compete for sea supremacy in the North Sea, the Fengming Island Science and Technology R&D Center has also designed several nuclear-powered battleships, destroyers, frigates, and amphibious landing ships. With a displacement of 70,500 tons, a length of 281.9 meters and a width of 137 meters, this nuclear-powered battleship is equipped with four three-pack 406 mm 50 x caliber electromagnetic main guns, 10 twin 127 mm electromagnetic secondary guns, and a large number of quadruple 40 mm anti-aircraft electromagnetic guns and 20 mm anti-aircraft guns. 6 533-mm nuclear ** launch tubes, which, if built, will be the largest battleship in the world.

The destroyer has a full load displacement of 65,000 tons, a length of 269 meters, a width of 39 meters, and is equipped with 3 3-mounted 406-mm laser cannons, 6 twin-mounted 152-mm electromagnetic auxiliary guns, and 4 twin-mounted 100-mm laser anti-aircraft guns.

The world's most advanced nuclear-powered aircraft carrier "Rise" has a larger displacement, 645 meters long and 351 meters wide, equipped with 80 508 mm laser main guns, 12 203 mm laser secondary guns, 16 105 mm laser anti-aircraft guns, 28 37 mm electromagnetic anti-aircraft guns, 40 20 mm electromagnetic air defense cannons, and a speed of 200 knots.

Tianyi heard Yu Lao's introduction and said excitedly: "Nuclear-powered battleships, battleships, destroyers, frigates, and amphibious landing ships appear at sea, and if Lijian and other countries invade again, they will not come back. ”