Chapter 1354 Electromagnetic Energy Emission System

For Han Chenfeng, who was born in plasma theory research, the concept of surface suction is indeed a bit unfamiliar.

Fortunately, its principle is not complicated, it is nothing more than removing low-energy fluids that may cause separation in advance, or at least delaying the conversion point of near-wall flow from laminar to turbulent flow, thereby reducing losses.

It was first used by Chang Haonan in the turbofan 10 engine to improve the boost efficiency of the compressor.

Although the power generation channel of the magnetic fluid generator in front of us is not an impeller machine, the design method is still the same.

It took Chang Haonan only a few minutes to explain the whole process to the other party.

Han Chenfeng thought for a while, then simply took off the insulation layer on the surface of the power generation channel and gestured a few times on the wall:

"In this way, in addition to modifying the electrodes on the inner wall of the power generation channel, a corresponding structure is also needed to safely discharge the extracted gas..."

Compared with the complexity of the end surface of the compressor blade, this horn-shaped power generation channel with a generally narrow front and wide back is so simple that it cannot be simpler.

So Chang Haonan almost thought of the solution and had already conceived a general design plan.

He took a pen and drew a simple cross-sectional diagram of the power generation channel:

"Think about more complex situations later. For your verification device, the suction electrode can be designed as a conductive plate with a cavity, with a through hole connected to the lower power generation channel on the outer edge, and the bottom of the cavity is close to the bottom of the cavity Cut out an inclined deep groove at the end of the gas as a suction channel, and the exhaust cover plate is directly made into a flat plate with exhaust holes and vacuum flange, and the two are bonded to form a vacuum cavity..."

Han Chenfeng was a little confused about the operation process of this electrode at first, but after seeing the assembled structural diagram, he instantly showed an expression of sudden enlightenment:

"The gas extracted is not necessary to waste. You can connect a bellows to the outlet of the exhaust hole and directly feed it into the exhaust connection section, so that the rare gas and some plasma still remaining in it can participate in the next cycle. …”

"I immediately contacted Comrade Li Ziyin, who was responsible for structural design, and asked him to recalculate the design parameters of the power generation channel to see if other additional structural modifications are needed... If the margin is sufficient, then improve it in situ on this power generation channel... …”

This is a groove and hole operation, which will inevitably have an adverse impact on the structural strength. The power generation channel is the main load behind the detonation drive section and needs to work under high temperature and high pressure.

Therefore, before any improvement is implemented, it is necessary to ensure in advance that the equipment itself can operate safely.

Chang Haonan was not ready to intervene in more specific development work, so after listening to Han Chenfeng's plan, he just added:

"As for the specific parameters of the suction trough, your nuclear industrial system may not have had this experience before. I asked Lao Liu to send a few technical backbones from the 606th Institute to support it, but your progress is faster. Their time is tight now. Heavy, and the manpower is very tight…”

Although Huaxia has invested a lot of energy and resources in education over the past decade, technicians are not industrial products that can be mass-produced. Among them, there are very few who can stand alone. They can only screen them through the way of washing sand. , ultimately leading to the demand for technological development and industrial expansion far exceeds the speed of talent cultivation.

At least for Chang Haonan, no one was available compared to the turn of the century, so that there was more situations in which a person had to take multiple positions.

Hearing that he could get extra support, Han Chenfeng looked happy and immediately promised:

"Don't worry, in the process of building this principle verification equipment, we have already mastered the suppliers of each subsystem and the assembly and manufacturing process. As long as the design plan is taken out, it can be done within about a week... ”

Principle verification equipment is similar to the principle prototype on the Aeroengine side.

In all aspects, it is a good idea. As long as you can run, it is considered successful. There is no need to consider too many specific production needs. Therefore, the cost is low and the cycle is short. Once you find that the route is not working, the psychological burden of overturning the recurrence is also relatively low.

"Then I'll..."

Chang Haonan was about to say that he was going back to the office to call, but Han Chenfeng stopped him from behind:

"Academician Chang, there is another thing..."

The former paused, raised his hand and said straight:

"According to the previous plan, after determining the feasibility of the principle of detonation-driven magnetic fluid generation, the next step should be to consider the continuous work to produce periodic potential difference... But this prerequisite is basically impossible to achieve on the ground. You see the hypersonic aircraft there……"

At this moment, Chang Haonan only felt-

"It's numb."

This is the first time since I was reborn that I have been urged to make progress.

Magnetic fluid power generation needs to be adapted to suction-type super and scramjet engines, and he really can't take it out for a while.

But the entire R&D plan was pointed out to Han Chenfeng by himself. If you tell others halfway through the work, you will take a break for a year or two, it doesn’t seem like that…

Chang Haonan's brain was running rapidly and he soon thought of a solution to find a supplement:

"Don't worry about combining it with the suction-style superb. After all, both sides have brand new concepts and technologies. Once the risks are superimposed, there is a possibility of losing control."

He turned his hand slowly and looked like "Everything is in control":

"You first verify what I said to see if the peak power output by the device can be increased to 250MW, or at least 200MW or above. If possible, then do a round of application demonstration first... On the one hand, find And solve the problems that the principle research process has not been exposed. On the other hand, it is also to prove to the superiors that the results of this project deserve the huge investment required later.”

Han Chenfeng scratched his head when he heard this, thinking that it seemed different from what he had said at the beginning.

But after looking at Chang Haonan, who looked confident in front of him, he decided not to worry about these details anymore-

Since Academician Chang made such a decision, there must be his reason.

"But apply the argument..."

Han Chenfeng passed all the places in his mind that needed pulse discharge in daily life, and then frowned helplessly:

"Even when pulse discharge is needed, the power curve is relatively flat in most cases, and the output time of magnetic fluid generation is too short..."

No mistakes, one song, one content, one in 6, one book, one bar, one reading!

"If you add additional circuits, you can adjust the working characteristics, but now the medium and low-power flywheel and capacitor energy storage technology is already relatively mature, which is a bit too much... It's hard to say that it has any competitiveness."

Due to the special research direction, the Institute of Nuclear Industry 240 has rarely undertaken application-oriented projects in the past.

Although the business scope has been expanded in recent years, the shortcomings of insufficient imagination are difficult to make up for in one or two years.

"Since we are not competitive enough in the face of existing needs, we will create new needs..."

Chang Haonan has tried this routine for a long time:

"If calculated based on the average power of 100MW, it is equivalent to saying that even this laboratory-level principle verification device can generate about 5 megajoules of energy in 0.05 seconds, considering that the terminal conversion efficiency of electromagnetic energy can reach Half or even higher, then it can also have about 2.5-3MJ on the load side."

"According to general rules, the output capacity of truly large-scale engineering prototypes must be improved at least two orders of magnitude to reach the level of 200-300MJ... This number is not easily achieved by a flywheel or a capacitor."

Han Chenfeng's eyes lit up:

"Electromagnetic energy weapons...such as electromagnetic cannons?"

The upper limit of the kinetic energy of a chemical energy cannon is basically around 25-30MJ. If it can be increased by 10-12 times at a time, it will obviously be very attractive to the army.

"Uh... that's OK."

Chang Haonan nodded reluctantly:

"But for real weapons, the preparation time for detonation drive is still too long... I just glanced at your testing process. The ideal preparation time in full automatic mode is two minutes, so even if you use 6-8 sets of explosions The Bo section takes turns to drive the same power generation channel, and at most it can compress the single preparation time to 15-20 seconds..."

"This launch frequency may be enough for battleships, but modern artillery cannot tolerate such a low rate of fire. Besides, the cost of increasing the range by increasing the initial speed alone is very poor, and the cost of hydrogen and oxygen is high, even if we do so in the future It is hard to say that hydrogen is more cost-effective than a genuine missile."

Han Chenfeng thought about it and felt that what the other party said was reasonable:

"Then you mean..."

"The ultimate goal is definitely the electromagnetic catapult on the aircraft carrier... Of course, the verification stage can be temporarily called a less sensitive name like the 'electromagnetic energy launch system'."

Chang Haonan finally clarified his ideas:

"Especially nuclear-powered aircraft carriers, hydrogen and oxygen can be directly generated by reactors, and the frequency of ejection once every 15-20 seconds is almost twice that of steam catapults... Our country actually started pre-research on this technology very early, but it was because of the lack of high quality. Only when specifications of energy storage components are not practical, our solution can just bypass this obstacle."

"If you want to talk about the disadvantage, it is that the combined volume of multiple detonation segments is definitely larger than that of capacitor energy storage, but for aircraft carriers, this is not bad for this space..."