This is how black technology should be used

Chapter 98 The Violent Super Fuel

Because of the emergence of graphene news, some changes have been made to the design of the individual-powered exoskeleton, but the changes to the basic version are not major. Basically, the lithium battery is replaced by a graphene battery.

And this thing can't be replaced now, it can only be replaced after the mass-produced graphene arrives, and then it can be made into a battery of the corresponding size.

Fortunately, Li Future thought of this when he participated in the design, and strongly requested that the battery compartment be changed to a universal type in the early stage. At the beginning, other engineers had some complaints, but now they have nothing to say.

Just follow the train of thought of Comrade Xiao Li!
Just like the idea of ​​a police exoskeleton proposed by Li Weiwei, the older generation of experts had some criticisms, but the younger engineers thought it was great.

And when you are preparing for the test, you will be the tester yourself.

In the end, it was the director who made the decision: “Since it’s an experiment, let’s give it a try, and the obvious enough slogans and large size can indeed calm some people down.”

It's just that after the start of this kind of mission, there is basically no work in the future. After all, he doesn't know the mission requirements of various military and police branches, so he doesn't know what the corresponding individual exoskeleton needs.

Of course, he didn't take a break either, but went directly to the "next door" by car.

The 35 Research Institute is located in Qindu, which is the capital of the "Qin Empire", the first feudal dynasty in Fanxing. The "next door" he mentioned is a place [-] kilometers east of Qindu, which is the Fourth Aerospace Academy.

Its official name is Aerospace Power Technology Research Institute, which belongs to Fanxing Aerospace Science and Technology Group. It is a solid rocket motor professional research institute based on the research, design, production and testing of solid rocket motors.

It is mainly responsible for the development, production and testing of solid engines for launch vehicles, strategic and tactical missiles, satellites, manned spacecraft and other aerospace products of Fanxingguo, as well as major national technological innovation and pre-research tasks in this field.

And the metal hydrogen that Li Future obtained before belongs to the "major national technological innovation in this field"!
Aerospace workers have long been looking for more efficient fuels.

Among the commonly used rocket fuel combinations, liquid hydrogen and liquid oxygen have the highest specific impulse.

According to the data, the vacuum specific impulse of liquid hydrogen and liquid oxygen is as high as 455s, and the specific impulse is also 1s under the standard atmospheric pressure of 390atm.

And they are also "green" fuels, the product of combustion is water.

However, liquid hydrogen and liquid oxygen have several relatively big problems.

One is that the storage conditions are relatively harsh. The boiling point of liquid hydrogen is -252 degrees Celsius. Let alone its own storage problems, this temperature is very "unfriendly" to the liquid oxygen installed in the rocket with it, because the liquid oxygen The freezing point is -219 degrees.

In other words, if liquid hydrogen and liquid oxygen are stored at the same temperature, either the liquid oxygen will freeze directly, or the liquid hydrogen will boil directly.

It costs money to store the two at different temperatures.

So hydrogen and oxygen rockets have the same virtue-expensive!

The other is that although the specific impulse of liquid hydrogen is high, the density is too small, only 70kg per cubic meter.

In contrast, the density of kerosene and unsymmetrical dimethylhydrazine is about 800kg per cubic meter, and the density of liquid oxygen has reached about 1140kg per cubic meter.

The density of liquid hydrogen is less than one-tenth that of others!

So to hold enough liquid hydrogen for rocket flight, you need a big, big, big liquid hydrogen tank.

Therefore, rockets that use liquid hydrogen and liquid oxygen as the main force have a characteristic-fat!

For example, the Long March 5, which uses liquid hydrogen and liquid oxygen as the core power, has gained the nickname of "Fat Five".

Compared with the liquid hydrogen and liquid oxygen with strange proportions, liquid oxygen and kerosene are much more harmonious, so they are the most commonly used propellants for liquid rockets.

Liquid oxygen kerosene is cheap, affordable and cost-effective, that is to say, the performance is much worse. The theoretical vacuum specific impulse is close to 360s, and the sea level specific impulse is only 300s.

Fortunately, the advantage of others is coordination.

First of all, the storage temperature of kerosene is close to that of liquid oxygen, and the two can basically share the same insulation system, and its density is high, which is higher than that of liquid hydrogen.

So liquid oxygen kerosene rockets are relatively slender.

However, the performance of liquid oxygen kerosene rockets is related to the quality of kerosene. The carbon content of kerosene is relatively high, which will lead to serious carbon deposits in the engine, which is not conducive to the reuse of the engine.

However, it is much cheaper than liquid hydrogen, so the problem of kerosene is a small problem.

Moreover, using high-quality kerosene can reduce carbon deposition. The Saker rocket uses a liquid oxygen kerosene engine for reuse.

Therefore, some of the current rockets use liquid oxygen and kerosene for first-level boosting, which is simple, crude, cheap and easy to use. Rockets above the second level use liquid hydrogen and liquid oxygen, which is more conducive to weight loss than rushing up, and can send heavier equipment to higher altitudes. further afield.

There is dinitrogen tetroxide + unsymmetrical dimethylhydrazine, which is the legendary toxic hair, which is highly toxic.

Their theoretical vacuum specific impulse is 343s, and the sea level specific impulse is 292s, lower than kerosene.

But...it is a normal-temperature fuel, and the requirements in all aspects are not high. It is simpler and cruder than kerosene, and it is easy to use. Rockets with poor conditions in the early stage are the favorite to use.

There is also a "new" fuel, which is liquid oxygen methane.

They can be regarded as an evolution of liquid oxygen kerosene. Compared with kerosene, the carbon deposition problem of methane can be greatly improved, and the storage conditions are much better than liquid hydrogen.

Theoretically, the vacuum specific impulse is close to 370s, and the sea level specific impulse is 310s, which is slightly stronger than kerosene.

At present, various countries are developing methane engines, but so far no large-scale rocket using liquid oxygen methane as the main power has been put into service. This is one of the ideas for future development. It is estimated that there will be methane rockets taking off in the near future...

perhaps.

After all, in the aerospace field, pigeons are the norm.

However, this "future" is probably not as popular as Li Future, and the metal hydrogen he produced is definitely an existence that smashed the field.

The density of solid metal hydrogen is extremely high, basically reaching 1000kg per cubic meter, which is slightly lower than that of liquid oxygen, but its specific impulse is close to 1700s!

Its small size and ridiculously high specific impulse prove that its energy per unit volume is extremely high.

In fact it is.

As a rocket fuel, the thrust generated per kilogram of solid metal hydrogen is equivalent to five times that of liquid hydrogen and liquid oxygen rocket fuel per kilogram, and its specific impulse is close to 5s, which can create small-sized, small-weight, high-performance launch vehicles .

Well, the same goes for similar looking missiles.

As an ultra-high-energy explosive, the explosive power of metal hydrogen is equivalent to 25 to 35 times that of TNT explosive of the same mass, and is currently the most powerful chemical explosive.

Compared with aviation fuel, its energy is 200 times greater. If it is used in aircraft, a small tank of fuel can fly very far.

It is also a high-temperature superconductor with a superconducting transition temperature near room temperature. It uses metal hydrogen to transmit electricity, and the transmission efficiency is above 99.7%.

For example, the weight of a generator is less than 10% of that of an ordinary generator, and the output power can be increased dozens of times.

At the same time, it has the mechanical strength of ordinary metals and can be cut with ordinary tools.

Through the use of additives, metal hydrogen can be made stable and strong. Its low density and high strength properties, like graphene, can be used to manufacture structural materials for military armored vehicles, fighter jets and other weapons and equipment.

The "next door" Aerospace Fourth Academy is to develop its aerospace application, but when faced with solid metal hydrogen, the experts of the Fourth Academy are sometimes happy and sometimes sad.

The happy thing is that its performance is ridiculously high, and the sad thing is that its performance is ridiculously high.

It is too irritable, it explodes at one point, and it is a violent explosion, ordinary solid rockets can't hold it at all!
Every test is... I cracked.jpg
　Thank you for sleeping in my dream and Wildfire~~
　　
　
(End of this chapter)