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There is a technical term in the field of aviation called "bird strike", which means that a bird hits a human aircraft flying in the air. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

It is common knowledge that birds are a deadly threat to aerial vehicles. Birds are generally small in size and light in weight, and the main damage of "bird strikes" does not come from the birds themselves, but from the ultra-high speed of the artificial aircraft itself.

For example, if an aircraft flies in the air at a speed of 128 m/s, if the plane collides with a 500-gram bird, according to the kinetic energy theorem, it will produce about 4000 joules of energy, and these energies are absorbed by the aircraft almost instantly, and the parts in contact with the body will be damaged to varying degrees, which often means that the plane is destroyed and people are killed.

The speed of the floating high-speed railway has reached an astonishing "subsonic" level of more than 1,200 kilometers, and the destructive power is even more unimaginable, and it is not uncommon for birds to hit aircraft.

The track of the floating high-speed rail is set at a low altitude of several hundred meters, and the harm of bird impact has to be taken into account, knowing that even in the ocean, there are a large number of seabirds.

The person who found the small details was indeed surprised, but he did not show too much surprise, this kind of low-level question is obviously within the scope of the other party's consideration, and he just needs to wait for the answer to be revealed.

However, everyone has also guessed, and they can roughly guess based on the fragments of information they know now.

Not surprisingly, it should be a vacuum pipe!

I saw Ren Hong on the stage adjusting the mixed reality projection, and at the same time said: "Anti-gravity technology is the core technology of floating high-speed rail, and other corresponding supporting technologies are also the key, the birth of a new transportation system needs to go through a long and multi-field technical accumulation." ”

"ET3, an American technology company, has developed a 'capsule train' plan for the principle of vacuum pipe transportation. Mr. Musk enriched the concept and proposed the concept of 'hyperloop', contributing more technical and design details. ”

"From another point of view, the floating high-speed rail is actually a luxurious upgraded version of the 'super high-speed rail', and many key technologies applied to the hyper-speed rail will be applied to the floating high-speed rail, but the existing mature technology will still be further upgraded when applied to the floating high-speed rail, which is in line with the actual requirements."

"Compared with the single-pipeline vacuum transportation pipeline currently operating in Dubai, the floating high-speed rail uses a composite honeycomb vacuum transportation pipeline."

The mixed reality image then projects a honeycomb-shaped cross-section of the pipe, which is an isohexagonal shape, a composite transport pipe consisting of a total of seven transport ports, all of equal sizes. They are separated by more than 10 meters from each other and fixed with trusses.

It's not hard to understand that if the clinging is too dense, it will be a big loss if one of the pipes fails and the other pipes that were originally intact will be lost.

Boy!

The people present were not surprised to see this data, especially the representatives and heads sent by various countries, this composite transportation pipeline actually has seven full-scale transportation ports, in other words, it can allow seven floating trains to operate at the same time, a 50,000-ton carrying capacity, multiplied by seven, that is, a full 300,000-ton transportation capacity, a large ocean-going shipping cruise ship is nothing more than that.

And this guy can be faster than air transportation.

Many people also have doubts in their hearts, the honeycomb composite vacuum transportation pipeline sounds a bit lofty, but just like that, it's just a few more transportation pipelines, and the cost will definitely be outrageous, right?

Ren Hong seemed to see the doubts in everyone's hearts: "It is worth noting that the floating high-speed rail and the hyperloop look similar, but they are two completely different concepts. The core technology of the hyperloop is still electromagnetic levitation technology, while the core technology of the floating high-speed rail is anti-gravity. ”

"The same core concept of levitation is to set up a special peer environment to reduce contact friction and air friction. The difference is mainly reflected in two points: first, if it is converted into electric energy to make a comparison, then the transportation capacity of the floating high-speed rail per kilowatt-hour is 150 times that of the hyperloop; Second, the dependence of floating high-speed rail on hardware is much smaller than that of high-end high-speed rail, and we build a honeycomb vacuum transportation pipeline with seven transportation ports, just for a vacuum environment, that's all, so the actual investment cost is just equivalent to building a capsule vacuum transportation pipeline. ”

Ren Hong said this, there was a whispered discussion in the audience, obviously a little unconvinced, smiled, and explained: "The floating train is based on anti-gravity technology, and it is not the electromagnetic levitation system that is maintained in the suspended state, so our honeycomb composite vacuum pipeline only needs to consider one point: that is, to maintain a vacuum environment, and be safe and reliable." ”

"This means massive cost cuts, Elon. Musk's technical team has been able to reduce the ultimate pressure of the vacuum pipe to less than 1,000 pascals, one atmosphere is equal to 101325 pascals, which is equivalent to pumping out more than 99% of the air in the sealed cabin of the honeycomb pipe. ”

"Anti-gravity is also a big energy consumer, so how can the anti-gravity device on the floating train get power?" Ren Hong asked himself: "Nuclear power, I have a general data here, a nuclear fuel refill of the floating train can maintain the basic operation for 15 years, except for irresistible factors as the premise, it can ensure that the demand for 15 years can be met, and the nuclear fuel replenishment will be carried out after 15 years." ”

Nuclear energy is undoubtedly the most efficient clean energy in the world today, and it is simply configured for these large energy consumers, such as large-scale power equipment, such as aircraft carriers, etc., all of which are driven by nuclear power.

"So the question is, the floating train does not have an electromagnetic levitation system, so what power drives the tens of thousands of tons of nuclear-powered floating trains forward?" Ren Hong once again threw a question to the audience.

"Of course, we can drive it with the help of anti-gravity, which is theoretically possible." Ren Hong said, but quickly added: "The cost is too high, how high?" Driving trains against gravity would mean that on average we would have to refuel every 18 months, which is clearly not desirable even if it is nuclear-powered. ”

"The main purpose of the anti-gravity device is to levitate the car, and it really can't hurt to use this technology as the core drive, unless the ticket price is set at $800, but I think customers will be happy to say no."

A burst of laughter rang out.

"Kinetic energy!" Ren Hong, who smiled at the same time, said the word succinctly, and then added: "Both the floating train and the capsule train are running in a mirror environment, both in a vacuum pipeline, and they mainly rely on inertial kinetic energy to drive forward. However, there is a difference between how to provide a source of kinetic energy for the train, and the capsule train uses a linear motor to accelerate the carrying cabin, and finally relies on inertia to move forward with magnetic levitation in a vacuum pipeline. ”

"The initial source of kinetic energy for the floating train is an electromagnetic catapult." Ren Hong replied. The United States is undoubtedly a leader in electromagnetic catapult technology, and China has the ability to compete with the Americans in this field when it started after the start in the field of electromagnetic catapult.

With this technology, the Chinese and Americans are at the forefront of the world.

Ren Hong said with a smile: "When it comes to electromagnetic catapult technology, I think the participants here may have thought of the electromagnetic catapult used for the take-off of carrier-based aircraft on aircraft carriers at the first time, and electromagnetic catapult technology can be said to be the key technology of aircraft carriers." ”

"Our CMSX space base has a curved space orbit launch tower, and now we have to build several more, also using electromagnetic catapult technology. There is no doubt that China and the United States are the most technologically mature countries in the field of electromagnetic catapult. ”

"But the electromagnetic catapult technology to be mentioned here is not to drive a carrier-based aircraft or an aerospace transport aircraft of more than ten tons or dozens of tons, but to drive a super-large volume of tens of thousands of tons!"

Ren Hong said with a smile: "If the electromagnetic catapult or steam catapult on an aircraft carrier is to drive an aircraft, then what I want to say now is to be able to directly drive a big guy comparable to a medium-sized aircraft carrier and make it reach subsonic speed." ”

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… (To be continued.) )