There is a professional term in aviation called "bird strike", which means that birds fly into the air.

Birds are a deadly threat to aerial vehicles and are common sense known to individuals.Birds are generally small and light in mass, and the main damage of "bird strikes" comes not from the birds themselves, but from the ultra-high speed of the artificial aircraft itself.

For example, a flying machine flying in the air at a speed of 128 meters / 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 this energy is almost absorbed by the aircraft in an instant, and the parts of contact with the body will be destroyed to varying degrees, which often means the disaster of the crash.

The speed of the floating high-speed rail has reached an astounding more than 1,200 kilometers of "subsonic speed" level, the destructive power is even more unimaginable, and the bird impact vehicle is a common thing.

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 considered, to know that even in the ocean, there are a large number of seabirds.

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

However, there is also speculation, and according to the information fragments now known, it can be roughly guessed.

Unsurprisingly, it must be a vacuum pipe!

Only on the stage of Ren Hong while adjusting the mixed reality projection, but also said: "anti-gravity technology is the core technology of floating high-speed rail, and other corresponding supporting technology is also the key, the birth of a new transport system is the need to go through a long and multi-field technology accumulation."

“The U.S. technology company ET3 has developed a ‘capsule train’ program for the principles of vacuum pipeline transportation, and one of my partners, Elon Musk, has enriched the concept and proposed the concept of ‘Hyperloop’, contributing more technical and design details.”

"Frole high-speed rail from another point of view, is actually the 'super high-speed rail' luxury upgrade version, in the hyperloop applied to many of the key technologies will be applied to the floating high-speed rail, but the existing mature technology, the application of floating high-speed rail will still be further upgraded, which is in line with the actual requirements."

“Compared to the single-pipe vacuum transport pipeline currently operating in Dubai, the floating high-speed rail uses a composite honeycomb vacuum transport pipeline.”

The mixed reality image then projects a honeycomb-like pipeline cross-section, showing an equal hexagon, and the composite transport pipeline consists of a total of seven transport ports, all in size.They are separated by more than 10 meters and fixed with a truce.

It is not difficult to understand that if the closeness is too dense, if one of the pipelines fails and spreads to other pipes that were originally intact, it will lose a lot.

Good guy!

The people present saw this data is not surprised, especially the representatives sent by the countries, this composite transport pipeline actually has seven all-scale transport port, in other words, that is, can make seven floating trains operate at the same time, a train of 50,000 tons of carrying capacity, multiplied by a seven, that is, a full 300,000 tons of transport capacity, a large ocean transport cruise ship is not so.

And this guy can be faster than air transport.

Many people also have doubts in their hearts, honeycomb composite vacuum transport pipeline, sounds a little tall, but also so, but just add a few more transport pipelines, this cost problem will certainly be high outrageous?

Ren Hong seems to see the doubts in the hearts of the people: "It is worth noting that the floating high-speed rail and the hyperloop seem similar, but they are completely different concepts."The core technology of the Hyperloop is still electromagnetic suspension technology, and the core technology of floating high-speed rail is anti-gravity.

"The same is based on suspension as the core concept, which is to reduce contact friction and air friction and set a special peer environment."The difference is mainly reflected in two points: First, if converted into electricity to make a comparison, then the floating high-speed rail per tempo of electricity transport capacity is 150 times that of the super high-speed rail; second, the dependence of floating high-speed rail on hardware is much smaller than the high-speed rail, we build a seven-transportation port of the honeycomb vacuum transport pipeline, just for a vacuum environment, that is, so the actual investment cost is exactly the same as the creation of a capsule vacuum transport pipeline.

Ren Hong said that here, there is another whispered discussion under the field, obviously a little less convinced, smiled, explained: "Floating train is anti-gravity technology as the core, to maintain the suspended state is not the use of electromagnetic suspension system, so our honeycomb composite vacuum pipe only need to consider one point: that is, to maintain the vacuum environment, and safe and reliable."

“This means a massive cost reduction, and Elon Musk’s technical team has been able to reduce the limit pressure of the vacuum pipe to less than 1,000 pars, and the atmospheric pressure is equal to 101325 pars, which is equivalent to removing more than 99% of the air in the cell seal.”

"Anti-gravity is also a big energy-consuming person, so how can the anti-gravity device on the floating train get power?"Ren Hong asked himself: "Nuclear power, I have a rough data here, floating train a nuclear fuel injection can maintain 15 years of basic operation, in addition to irresistible factors as the premise, can guarantee to meet the needs of 15 years, 15 years before the nuclear fuel resupply."

Nuclear energy is undoubtedly the most efficient clean energy in the world today, which is simply equipped for these energy-consuming large enterprises, such as large power equipment, such as aircraft carriers, etc., is not nuclear power drive.

"Then the question is, the floating train does not have an electromagnetic suspension system, so what is the power to drive tens of thousands of tons of nuclear-powered floating train forward?"Ren Hong once again threw a question at the whole audience.

“Of course, we can use anti-gravity drive, which is theoretically feasible.”Ren Hong said so, but quickly added a sentence: "The cost is too high, to what extent?"Driving on an anti-gravity-driven train would mean that on average every 18 months we would have to refuel a nuclear fuel, noting that even nuclear power would be undesirable.”

“The biggest purpose of the anti-gravity device is to make the car levitate, and it can’t hurt to use this technology as a core drive, unless the fare is set at $800, but I think customers will be happy to say no.”

A burst of laughter.

“The momentum!”Ren Hong, who converged and smiled, said this word briefly, and then added: "Floating trains and capsule trains are driving in a mirror environment, all in a vacuum pipeline, mainly relying on inertial kinetic energy to drive forward."But how to provide a kinetic energy source for the train is different, the capsule train uses a linear motor to carry the hull to accelerate, and ultimately rely on inertia in the vacuum pipe magnetic levitation forward.

“The initial kinetic energy source of the floating train is the electromagnetic catapult.”Ren Hong replied.Electromagnetic ejection technology, the United States is undoubtedly the leader in this field, and China in the field of electromagnetic ejection after the start of the situation, and now in this field also has the ability to compete with the Americans.

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 in this room may have thought of the electromagnetic catapult used in aircraft carriers for carrier-based aircraft take-off, and electromagnetic catapult technology can be said to be the key technology of aircraft carriers."

"The company's cmsx space base has a curved sky orbit launch tower, and now it has to build several, using electromagnetic ejection technology."There is no doubt that China and the United States are the most technologically mature countries in the field of electromagnetic ejection.”

"But the electromagnetic catapult technology to be said here is not to drive a dozen tons or dozens of tons of carrier-based aircraft or space transport aircraft, to drive the equipment is tens of thousands of tons of super large volume!"

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