Chapter 1782 I need an explanation

"You're stupid for me?" Zhang Lan glanced at the girl angrily, "If the retreat technology is so easy to use, can those firearm design experts not see it?" Is it really as good as you say, and the weapons that are withdrawn are all dissatisfied? ”

Of course, there are also guns that use tube-retreat, such as the well-known U.S. military's active M2HB heavy machine gun, which adopts the way of tube-retreat recoil, but also brings huge self-weight to M2HB for this reason, in the U.S. military, M2HB, a heavy machine gun that suppresses firepower on the ground, is usually deployed on Humvee military vehicles, armored cars or light armored vehicles, and even in foreign armed forces, it is also directly installed on the floor of the truck. And it is seldom carried by personnel as the light machine guns of the M60 series squad. 9W0W7W8.8C3A4I6h5o7n8g6w7e9n8x0u2e30.9c7o9m8

Speaking of which, the M2HB series of heavy machine guns is definitely an alternative among the world's firearms, among the world's active firearms, the pure use of barrel-withdrawn firearms, only M2HB, the others even if they use the barrel-retreat technology, they are also mixed with several other ways.

"That's because they haven't been able to effectively control the volume and weight of this set of rear seat control systems on the premise of effectively reducing the hydraulic pipe withdrawal technology, simply put, they are too stupid" Alice said the fundamental reason why the hydraulic pipe withdrawal technology, which has been applied to artillery for nearly a hundred years, has not appeared on firearms until now, and unceremoniously made a deep contempt.

"If you want to design such a set of things, the weight of this hydraulic system alone will exceed the weight of this rifle, plus such a set of things, the weight of the whole set of guns has increased at least doubled, no matter how it is calculated, it is not cost-effective, rather than such a toss, it is better to directly improve the physical fitness of the sniper. Under the existing scientific and technological conditions, for all parties and weapon design units, the use of hydraulic pipe withdrawal technology on super-large-caliber high-precision sniper weapons, the weapon system is huge and heavy, resulting in inconvenient movement, not to mention, the cost is too low. ”

This is Alice's analysis, Zhang Lan also agrees, the reality is the same, and even the M2HB is an alternative, although it uses pipe retreat technology, it is not a more efficient hydraulic pipe retreat technology, but the use of short recoil technology in pipe retreat technology, just relying on the mechanical structure to alleviate the huge recoil, despite this, the recoil of M2HB is also a type with a small recoil among the world's various active heavy machine guns.

"If you do this, the cost will definitely go up a lot, right?" Zhang Lan asked. In fact, this is for sure, there is no doubt, as long as you look at those rapid-fire guns with a caliber of 20mm, they all use hydraulic pipe withdrawal technology, in any case, the cost of rapid-fire guns is much higher than the price of sniper rifles.

"That's for sure, even this hydraulic pipe retraction system alone may exceed double the overall cost of the original firearm," Alice nodded, using such an advanced recoil principle, which is a matter of course, "Although this will cause the overall cost of firearms to rise a lot, but the heavy sniper rifle is not cheap, and it will not be equipped with a large number of troops like ordinary assault rifles, and the number of such heavy sniper rifles in any country can exceed 10,000, then it is already sky-high." For this high-precision long-range sniper weapon, the difference between the price of $10,000 and the price of $20,000 is actually negligible for any country. ”

It's nothing if the price is a little higher, the key is that this thing can really make Zhang Lan very excited, if such a thing can be made, it can be used to replace the electromagnetic sniper rifle that was made before.

"If you just use this guy's caliber, 20mm, how far can you go?" Zhang Lan patted the RT-20 in his hand and asked Alice.

"Which are you talking about?"

"Lose weight, improve accuracy and shooting range, reduce recoil, we play by ourselves anyway, it doesn't matter how much it costs, eh...... You can follow this line of thought: a 20mm caliber high-precision sniper weapon can use special sniper warheads such as explosive shells, armor-piercing shells, armor-piercing incendiary bombs, high-explosive grenades, long-range sniper bullets, shell-piercing shells, and special competition bullets, with a maximum controllable effective range of about 2500 meters. ”

"Gunpowder bullets, a firing range of 2500 meters?" Alice was taken aback by Zhang Lan's request, "Then the maximum lethal range of this bullet will exceed 9,000 meters, and the shape, center of gravity and weight of the bullet need to be re-optimized, and the propellant must be redesigned at the same time, and the original propellant cannot meet this requirement." ”,

"It's okay, let's just do it, anyway, we can sell it for money when the time comes, just to make some pocket money by the way." Regarding the difficulty that Alice said, Zhang Lan felt that with this girl's ability, if she didn't squeeze hard, this girl would not be able to contribute, and it was actually good to let her contribute more strength.

For example, take the famous Barrett M82A1 sniper rifle as an example, the maximum effective range of this gun is only 1500 meters, but the maximum range can reach 6500 meters, and there is also the ability to kill people at this distance, of course, this is under the premise of using artillery shooting technology, that is, the muzzle elevation angle of more than 30 degrees can be achieved, which is already in the category of "projectile", as for accuracy? It's better not to have extravagant expectations.

"I'm scared of you." Alice nodded gloomily.

"In terms of specific parameters, it is better not to exceed 1.4 meters in length, I want to be able to control the weight to about 10 kilograms, there is nothing wrong with lower weight, but it is better not to exceed 14 kilograms, and in terms of recoil, I hope it feels similar to the recoil of the M4 carbine. Use all kinds of new materials and technologies that you think are suitable, and try what the results will be after using the hydraulic tube retraction technology, and strive to design this 20mm sniper rifle into a real monster. ”

"This thing ......," Alice muttered and shook her head, "but it's difficult." ”

What is the recoil of the M4 carbine with small-caliber cartridges? It's hard to imagine, roughly equivalent to a gentle push on your shoulder.

"Of course," Zhang Lan smiled brightly, "If it's not difficult, why not use our beautiful Miss Alice to go out in person?" The little minions are done. ”

————————————————————————————

Although Alice's design skills are very strong, Alice is not omnipotent, just like a few circles on her bare head can come up with an idea, for a thing that Zhang Lan has such high requirements, the little girl also needs to explore and design a little bit...... For firearm shooting, the weight of each component needs to be carefully considered, even to reduce the weight of a few grams, it takes a long time to think about it.

Relatively speaking, asking Alice, who has a lot of weapon design skills, to design this thing is already to find the most suitable designer candidate, but even so, Alice admitted to Zhang Lan that this thing has not been done for at least a month - this is still on the premise of getting the help of Brother Tian and Brother Zhuzi.

One month? Zhang Lan was not in a hurry, and was even a little happy.

No matter which country designs a firearm, even the lightest pistol, doesn't it take years to break and even more than ten years? Alice can get this thing in a month, of course, it's a good thing, but if it takes longer, it doesn't matter, anyway, I'm not in a hurry to use it, what really makes Zhang Lan value is the many breakthrough technologies and new material technologies hidden in this gun when such a gun comes out.

If you need to sell for money, these are the things that are really valuable, things are not worth much, the previous ones are the technology contained in these things.

Now, Zhang Lan is looking forward to how huge the impact it will have on all related industries such as the world's firearms manufacturing industry and metal processing industry when such a gun really comes out.

"Guns in modern warfare in all kinds of weapons and equipment, may be the most inconspicuous and cheapest, but it is also the most basic equipment, more directly represents the military soul and morale of this army, it is difficult to imagine what an army of soldiers is not equipped with guns, no guns, even if this army is equipped with more aircraft, artillery, missiles and warships." Alice said to Zhang Lan.

Zhang Lan agrees with Alice's words, in this kid's opinion, the fundamental reason for the development of new types of firearms is not a fundamental factor, but because, in the face of the increasingly complex war situation, although the range requirements of the war for ordinary soldiers' side-worn firearms are not as high as in the past, but the requirements for lethality and accuracy are higher, and this requirement for firearms naturally extends to the crown of the firearms family: the sniper rifle.

This is indeed the case, 20 years ago, a 7.62mm caliber sniper rifle can already complete the sniper combat mission very well, but as the form of war becomes more and more complex, the task to be completed by the sniper rifle is more and more complex, the firing range extends from 600 meters, 800 meters to more than 1000 meters, the sniper rifle produced in recent years, its effective strike range is close to the 2000 meter mark, those elite snipers, can even complete more than 2200 meters of sniper mission, This would have been unthinkable even in sniper operations 20 years ago. ,

Of course, with the longer and longer range, the requirements for the power of sniper rifles and ammunition are also increasing, and the transformation of war characteristics and combat methods requires sniper rifles not only to accurately complete the sniper mission of personnel, but even in addition, to complete the task of striking lightly armored targets and high-value targets.

"But compared to this, I'm more interested in all kinds of special sniper bullets," Alice stroked the hair that fell inadvertently from the corner of her forehead, and her tone was full of doubt and incomprehension, "I don't understand, why is your country only working small-caliber sniper rifles while developing sniper rifles?" Although the power of small-caliber sniper rifles is sufficient for sniper operations within 800 meters, but now under the war, there are more and more requirements for high-power and high-precision sniper weapons with a caliber of more than 12.7mm. ”

Speaking of this, the little girl was even more dissatisfied, "If they say that they have a different view from other countries in the world about the development of high-precision sniper rifles, why don't they even develop special sniper bullets, and even use 5.8mm heavy machine gun bullets?" Just kidding 5.8mm heavy machine gun bullets, can this caliber be called heavy machine gun bullets? Even if it can hit the range of 12.7mm heavy machine gun bullets, can it be so powerful? ”

Zhang Lan could only smile bitterly.

In general, larger diameter bullets have more mass and greater ability to carry and transmit gunpowder energy, so all else being equal, larger bullets are more powerful.

This is the simplest truth, at the same speed, a one-pound stone or a three-pound stone hits you, which hurts more? Of course, it's the three-pound one, and no one will have any doubts about that...... Who has any doubts and try it for themselves.

The advantage of the 5.8mm caliber bullet is that it has a strong damage effect on the soft tissues of the body at close range, and because of its light weight, it carries a large amount of ammunition and shoots smoothly at the same time, but in any case, although the muzzle velocity of the 5.8mm warhead is high, due to the light weight of the warhead, the storage velocity effect is not good. The armor-piercing ability and damage ability at medium distances are definitely inferior to those of 12.7mm caliber bullets, and even at 400 meters, the speed is less than 12.7mm, and as for the range above 1200 meters, there is no way to compare.

Of course, because of the differences in air tightness, barrel, rifling, etc., it is somewhat difficult to simply compare the actual performance of the two types of gun bullets, but the fact is the most convincing After the advent of the 5.8mm heavy machine gun bullet, the final result is that after the development of this so-called "5.8mm heavy machine gun bullet", even the military, which has always had no choice, can bear it, and abandon the whimsical design caused by some leaders patting their heads. The so-called QJY88 5.8mm heavy machine gun is directly called a general-purpose machine gun, and the QJZ89 12.7mm heavy machine gun that was developed later is really called a heavy machine gun.

A few years later, everyone remembers that there was a guy called the QJY88 type 5.8mm general-purpose machine gun, but they don't remember that when this guy first came out, he was actually staring at the name of a "heavy machine gun".

In the face of Alice's doubts, who can I ask this question? How do you answer?

"I think their original intention in the development is to develop a medium-range high-lethal general-purpose machine gun bullet, well, on the premise of reducing the caliber, you can also bring more ammunition." Zhang Lan's explanation was a little weak, and even he couldn't convince himself.

Alice pursed her lips and did not speak, but the meaning in her eyes was clear: As for saying good things for these guys? I don't know?

Although he was also very unhappy in his heart, Zhang Lan also understood in his heart that it was time to vigorously develop several models of special sniper ammunition, otherwise if there was only a good gun and no good ammunition, what was the difference between it and having a fighter with exceptionally good performance and technical indicators, but not equipping this fighter with advanced weapons?

————————————————————————

In this world, the most unbelievable thing is probably the mouth of politicians, and the most untrustworthy thing is the assurances of politicians patting their chests.

Less than a month after the news of the military's plan to purchase a batch of tiltrotors from the Alice Group, it was placed on the desks of intelligence chiefs and heads of government around the world, and the bloody red handwriting seemed to remind these politicians that if they did not pay enough attention to this matter, they would definitely die a miserable death in the end. ,

Seeing this news, the eyelids of the politicians of European and American countries suddenly jumped wildly

Alice Group has proven how good the performance of its own tiltrotor is, and many countries have even had the idea of replacing their own light transport aircraft and some large and heavy transport helicopters with Alice Group's multi-purpose transport tiltrotors...... The advantages of a tiltrotor are simply too great.

And now, just as they were discussing the use of this aircraft in the navy, the Alice Group used the deal to tell them that in the naval field, the tiltrotor could play an even greater role

"Why is this happening? Mr. Gus, I need you to give me an explanation" George W. Bush stared at his own chief intelligence dogleg: CIA Director Graham Porter. Goss, with red eyes, seems to be trying to eat people.

Porter. Goss was already dripping with cold sweat on his forehead, but in the face of angry George W. Bush, Porter. Goss didn't even dare to wipe the sweat from his forehead, he knew very well that if he couldn't quickly give his boss a satisfactory answer, the time he spent sitting in the position of director of the CIA could already enter a countdown state.

"Sir, listen to me." Trembling, Potter. Goss is like a wronged little daughter-in-law, hoping that Bush Jr. will give him a chance to explain.

"Say." George W. Bush took a deep breath and nodded, seeing what tricks this guy could say.

"This news, whether it is Alice Group or the Chinese high-level, the confidentiality work is very good, you know, when it reaches a certain height, we have no way to obtain accurate information, only when this matter is delegated to the hands of specific handlers, we will have a chance...... And now they have only just reached an agreement to complete the final delivery work, as long as it is more than half a year later, there is still plenty of time for us to react. ”.

toolbar{width:950px; margin:0auto; }#mark_bar{margin:0pxauto; width:570px; height:50px; color:#666; margin-bottom:10px; }.mark{float:left; cursor:pointer; text-align:center; width:189px; height:48px; background:url(/images/mark.gif)no-repeat-189px0; font-family: Microsoft Yahei, Arial, Helvetica, sans-serif, Lucida, LucidaGrande, Tahoma; }.markdiv{padding:13px; }.markdivspan{font-size:20px; font-weight:bold; }.linkbtn{margin:0pxauto; width:450px; }/********** prompt window class*******************/.popbox{position:absolute;} width:190px!important; height:110px!important; width:200px; height:120px; border:1pxsolid#a3bee8; background:#f0f7ff; color:#ff0000; font-size:12px; line-height:120%; padding:3px; display:none; z-index:9999; }.ajaxtip{position:absolute; border:1pxsolid#a3bee8; background:#f0f7ff; color:#ff0000; font-size:12px; line-height:120%; padding:3px; z-index:1000; }#tips{border:1pxsolid#a3bee8; padding:3px; display:none; background:#f0f7ff; position:absolute; z-index:2000; }#dialog{position:absolute; top:0px; left:0px; border:5pxsolid#8bcee4; background:#f1f5fa; font-size:12px; line-height:120%; padding:20px10px10px10px; visibility:hidden; }#mask{position:absolute; top:0px; left:0px; background:#777777; filter:Alpha(opacity=30); opacity:0.3; }