At this time, Lu Jiadong lowered his head, a pair of thick eyebrows were sometimes locked, sometimes loosened, and the fingers placed on the table topped the table lightly from time to time, making a slight "da~~" sound, Tan Bin and Wang Chuanchen did not speak again, nor did they make other sounds to disturb Lu Jiadong, because they knew that the young man opposite was already thinking about how to deal with it.

Tan Bin and Wang Chuanchen were right, Lu Jiadong was indeed thinking about how to deal with it, but unlike that seemingly calm face, his heart was in a mess, not for anything else, mainly because the news was too sudden and too severe, you must know that there are only a few days left before the start of the war, and such a time-tight and heavy task problem, ordinary methods will not work at all, and unconventional methods can only be adopted.

Based on this, Lu Jiadong's brain was running rapidly, and he wanted to find some emergency modification experience in weapon research and development in later generations, but after thinking about it, Lu Jiadong couldn't help but sigh in his heart, he was in a peaceful environment for too long, and all weapons and equipment research and development were carried out step by step, and he had never encountered a pre-war assault development situation, let alone any experience.

But even if he didn't, Lu Jiadong didn't give up, his mind kept recalling the technical information about artillery, and his tightly closed lips unconsciously loosened, and then gently trembled a few times, making a slight sound from between his lips and teeth:

"Self-tightening electroslag remelting hydraulic system independent gun carriage" Lu Jiadong muttered to himself while tapping the table with his fingers regularly, but the more Lu Jiadong spoke, the tighter his brows wrinkled, and the last pair of eyebrows almost had to be attached together, making Lu Jiadong's originally skinny forehead appear deeply wrinkled!

In this way, time passed minute by minute, Wang Chuanchen, who was sitting opposite, saw that Lu Jiadong had not spoken for a long time, and he couldn't help but be a little anxious, at this moment he raised his wrist again, looked at the time, and put it down again, looked at Lu Jiadong who bowed his head on the opposite side, and was about to speak, but was stopped by Tan Bin next to him.

And Lu Jiadong's lips and teeth still didn't stop: "Cannonballs, cannonballs, cannonballs!" When Lu Jiadong said cannonballs, his eyes couldn't help but light up, and then the words on his lips kept repeating those two words: "Cannonballs!"

Although Tan Bin couldn't hear what Lu Jiadong muttered from afar, the brightness of his eyes at that moment did not escape Tan Bin's penetrating eyes, and because of this, Tan Bin put down a pen in a circle in his hand and looked at Lu Jiadong opposite:

"Xiao Lu, if you have any ideas, just say them first, whether it is feasible or not, use it as a reference!"

Although Tan Bin was also a little anxious, after all, he had been in a high position for a long time, and he was very particular about what he said, of course, Lu Jiadong did not understand the meaning of these words, so he raised his head and glanced at Tan Bin and Wang Chuanchen who were sitting opposite:

"At present, time is pressing, and I am afraid that it is too late to develop a new gun, so I tend to modify the existing equipment"

"However, it is too late to modify the existing artillery, not to mention, the potential of the modification of the Type 59 130mm cannon and the Type 66 152mm howitzer equipped by our troops is also extremely limited, and I am afraid if the existing equipment is modified."

didn't wait for Lu Jiadong to finish speaking, Wang Chuanchen, who was already impatient, interrupted Lu Jiadong, but he didn't say it completely, everyone knew that his questioning was not unreasonable, and because of this, Tan Bin, who was sitting next to Wang Chuanchen, also cast questioning glances at Lu Jiadong.

However, Lu Jiadong did not wrinkle again because of this, let alone take these doubts to heart, but showed a faint smile: "Director Wang is right, our Type 59 and Type 66 have no room for modification at all, so there is no need to work the artillery itself!"

Lu Jiadong's words made Tan Bin and Wang Chuanchen very puzzled, so after the two looked at each other, Wang Chuanchen said the questions of the two people: "If you don't work artillery, what else can you modify?"

"Modified shells!"

"Modified shells?" Lu Jiadong's words made Tan Bin a little surprised, but Lu Jiadong showed full confidence: "That's right, now that the war is approaching, the front line has a very urgent need for this long-range suppression weapon, and we can only work the shells to complete this work in the shortest possible time, to put it bluntly, through modification, the shells can fly farther!"

"Let the shells fly farther!" Hearing Lu Jiadong's words, Wang Chuanchen couldn't help repeating a sentence, then frowned and thought for a while before asking:

"I saw the way to make the shell fly far last year in the foreign-related materials, which is called a rocket extended-range ammunition, but this ammunition is a completely new type of ammunition, not a modified type of ammunition, Xiao Lu, is it possible to use the existing ammunition can also be converted into a rocket extended-range projectile?"

"Can't!" As soon as Wang Chuanchen's voice fell, Lu Jiadong replied without hesitation: "It is difficult to convert ordinary artillery shells into rocket range extender bombs, not only that, the lethality of rocket range extender shells will be greatly reduced, the flight stability of artillery shells is not very good, and the cost is also very high, which is not suitable for large-scale equipment now!"

Looking at Lu Jiadong's confident and slow smile, Wang Chuanchen was not as eager as just now, but calmed down his emotions and asked Lu Jiadong: "Then what other ways are there to modify the shells?"

"We can add a bottom exhaust device on the basis of the existing shells, so that the bottom resistance can be reduced when the shells are flying, so as to achieve the purpose of increasing the range!"

As he spoke, Lu Jiadong couldn't help but stop, because Tan Bin and Wang Chuanchen on the other side looked at him suspiciously, and only then did Lu Jiadong realize that what he said was too brief, and it was really difficult for non-professionals to understand, so he took out a pen and paper from his briefcase, drew a sketch of a suggestion on it, and then lay on the table, pointed to the sketch and continued:

"This device is mainly installed at the bottom of the shell, we all know that when the cylindrical projectile flies at supersonic speed, a low-pressure area will be formed at the bottom of the projectile, thus forming a bottom resistance, generally speaking, the bottom resistance will account for about 30% of the total resistance, and it is this kind of resistance that exists,

When the shell is flying, a low-pressure area will be formed at the bottom of the projectile tail, and this low-pressure area is wrapped around the airflow boundary, like a closed space, if we find a way to let the bottom of the shell discharge pressurized gas into this space, so that the bottom resistance of the projectile will be reduced, so as to achieve the purpose of increasing the firing range!"

Lu Jiadong spoke most thoroughly, but Tan Bin and Wang Chuanchen still heard it in a fog, but even so, Lu Jiadong's key words to increase the range made the two of them shine, but then it dimmed:

"We don't know the principle or something, we just want to ask how the scope of application of this method is, whether the difficulty of modification is great, and whether it can be produced quickly!"

Listening to Wang Chuanchen's words, Lu Jiadong couldn't help but be stunned, but soon understood that the army was not concerned about technical issues, but on the feasibility and timeliness of weapons and equipment, and even if the technology was advanced and advanced, it could not meet the harsh requirements of the troops on the battlefield.

Then the army will also discard it, and the same is true for the kind of artillery shell modification that Lu Jiadong just mentioned, even if Lu Jiadong explains the technology thoroughly, Tan Bin and Wang Chuanchen are still concerned about whether this modification can quickly and effectively achieve the specified tactical purpose.

Thinking about this joint, Lu Jiadong did not hold a piece of paper to explain the principle of modification, but stood back in front of his seat with a confident smile on his face:

"This modification only needs to install an exhaust device at the bottom of the shell, so the scope of application is very wide, the difficulty of modification is not large, the cost will not be too high, and only a device can be installed at the bottom of the original shell, so the shape and charge of the shell will not change, and the power of the shell will not be reduced!"

"How much can the specific range be increased?" As soon as Lu Jiadong's voice fell, Wang Chuanchen couldn't wait to ask: "How much time will it take to develop a similar modification?"

"The firing range is at least 25% more than the original, as for the time of modification and development" said this, Lu Jiadong couldn't help but hesitate, although Lu Jiadong explained the principle very clearly, but this modification still requires a lot of preliminary development and calculation, otherwise the attitude of the shell into the chamber, the trajectory of flight, the best time to exhaust,

and the range of landing and dispersion will affect the final performance of the shell, and these take time, but time is indeed the most precious thing at the moment, after all, entering February, the countdown to the outbreak of the war has begun, but in the face of such a large development calculation, Lu Jiadong is also very bottomless!

"Xiao Lu, if there is any difficulty, just say it, Xiao Wang and I will help you find a way!" Since Lu Jiadong introduced the method of ammunition modification, Tan Bin did not speak much, but quietly listened to Lu Jiadong's narration, although he was not clear in some principles, but Tan Bin relied on many years of experience in weapons and equipment work, and thought that Lu Jiadong's plan was very feasible, so when Lu Jiadong had difficulties in the development and modification time, Tan Bin said this.

After listening to Tan Bin's words, Lu Jiadong no longer hesitated, after all, ammunition modification is a matter of burning eyebrows, and you can't tolerate your hypocrisy, so as soon as Tan Bin's voice fell, Lu Jiadong said:

"Calculation, this modification is nothing special in the production process, the difficulty is in the calculation, now the time is pressing, ordinary manual calculations can not cope with it at all, but"

"Go on!" Seeing Lu Jiadong pause, Tan Bin's eyebrows couldn't help but rise, and his tone became a little stern.

"If a few computers can be allocated, the progress of the calculation will be greatly accelerated, and I estimate that a small batch of modifications should be completed within a month!"

"Computer?month?" Listening to Lu Jiadong's words, Tan Bin leaned his back on the seat, stroked his chin with his hand, and couldn't help but groan for a moment, but it didn't take long for his eyes to glow with fortitude and decisiveness, and he patted the armrest on the seat with his palm:

"Okay, just do what Xiao Lu wants!"

ps: I wish the children's shoes of the college entrance examination to work hard and the title of the gold list!

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