Chapter 220: Towed sonar
Originally, Xue Qiang felt that this project would be like this, and after two years, the pump dossier stored in the East Sichuan Plant and the Xiangxi Plant would be handed over to the relevant units, and he would be able to retreat from the second line with peace of mind.
But before he could contact the receiving department, this batch of files was taken by Meng Jianye, who was parachuted in, and Xue Qiang was not surprised by this, after all, as long as people who know the industry know, the pump push system has really become a new type of propulsion device that is more cutting-edge.
If nothing else, the propulsion unit of the famous MK-48 torpedo in the United States is a small pump-thrust system, which is not only faster, but also has extremely low noise control.
Not only that, the new batch of "Los Angeles" class nuclear submarines in the United States also used the pump propulsion system, and the noise index was directly reduced by more than a dozen decibels, thus opening up a big technical gap for the Soviet nuclear submarines that were still using propellers.
Because of this, anyone who pays even a little attention to the military dynamics overseas will understand the importance of the pump push system.
However, it is not easy to restart the project, and the most important thing is funding, and it is naturally impossible to apply to the superiors, because the superiors have no money.
The allocation of funds from Endeavor Factory is even more nonsense, so that the two factories in eastern Sichuan and Xiangxi will almost wipe out the old foundation of Endeavor Factory, and there is no spare energy to invest in research and development.
So Xue Qiang felt that Meng Jianye fell in love with it, and he couldn't do anything else.
The facts were no different from what Xue Qiang expected, except for looking at the file and the Xiaohewan number left behind back then, Meng Jianye made a few nondescript models, and then there was no follow-up.
I thought that this matter would pass like this, but he thought that the Type 037 hunting submarine model equipped with a waterjet propulsion a few days ago finally let Xue Qiang see how wild Meng Jianye was, because Meng Jianye's way to raise money was very simple, that is, to sell this set of devices.
As for the feasibility, Xue Qiang is not worried, as the predecessor of the pump pushing device, it can also be said to be a rough version of the submarine pump pushing device, the general principle of the marine water jet propulsion device is similar to the pump pushing device of the submarine, the only difference is that the submarine is more compact and more precise.
Because of this, the pump propulsion research group also started with the marine waterjet propulsion device, and gradually advanced towards the more compact submarine type, so the results of the marine waterjet propulsion device in recent years have really achieved a lot.
Even some devices have done ship trial tests, including the hull navigation test of the same tonnage as the 037 type, and the effect is naturally quite good.
Based on this, Xue Qiang is not worried about the technical bottlenecks of the water jet propulsion devices produced by the Sichuan East Plant and the Xiangxi Plant, but also worries about whether Meng Jianye's idea can really be realized.
You must know that Bangladesh has signed a submarine subscription agreement with China, and the technical details in it are clearly written in black and white, which is not enough, but more importantly, the price issue.
The reason why Bangladesh wants the basic type of the Type 037 hunting submarine, and it is still subscribed at cost price, is that Bangladesh cannot afford more money to buy better ships.
And the waterjet propulsion device seems to have many benefits, but it is much more expensive than the traditional propeller, and if you add other supporting equipment, its price is at least a third higher than the basic model, how can Bangladesh accept it?
Therefore, Xue Qiang is not optimistic about Meng Jianye's attempt.
However, just like Xue Qiang was not optimistic as always, the result just surprised him, and this time it seemed to subvert his cognition, because the chief of staff of the Bangladesh Navy named Ibri Khan seemed to have been moved by Meng Jianye.
Xue Qiang's eyes didn't deceive him, Ibri Khan was really tempted, and while looking at the Xiaohewan cruising back and forth in the river bay with bright eyes, he said in disbelief: "You can really strengthen the anti-submarine capability of the Type 037 hunting submarine?"
"Of course, the Type 037 hunting submarine equipped with waterjet propulsion you just saw is our latest enhanced special anti-submarine version, because in addition to replacing the propeller with waterjet propulsion on the boat, it reduces its own noise.
In order to increase the boat's anti-submarine reconnaissance capability, we have not only replaced the hull sonar, but also equipped it with a set of towed sonar newly developed by our country......"
"What? Can you put a towed sonar?"
As soon as he heard this, Ibri Khan was not calm again, towed sonar can be called a killer weapon for ships to search for submarines, compared with the hull sonar that is both fixed and has a large blind spot and ship noise interference, towed sonar not only has a wide search range, but also lasts for a long time, and more importantly, its flexibility is excellent, so once it is successfully developed, it quickly becomes the anti-submarine standard configuration of major powers.
It is precisely because of this that this kind of equipment is in the hands of Europe, the United States or the Soviet Union, and it is difficult for ordinary countries to sell it, let alone produce it, even if they want to buy it.
"Yes, we can not only install, but also the performance is not inferior to similar products in the West, because our SDJ-102 towed sonar draws on part of the French technology, composed of three line arrays, each line array has three low frequencies, two intermediate frequencies and one high frequency A total of six acoustic components, with active and passive detection capabilities, of which the passive mode detection distance is more than 25 nautical miles, and the active mode is more than 50 nautical miles......"
Meng Jianye said that it was a bad thing, and Ibri Khan was even more fascinated when he heard it, but if these words fell into the ears of those old experts in the Institute of Hydroacoustics, they would definitely secretly scold Meng Jianye for being too shameless.
What borrows French technology, what is passive 25 nautical miles, active 50 nautical miles?
It's just nonsense with your eyes open, okay!
The SDJ-102 towed sonar copied from the French DE-1160 towed sonar is much worse than that of the French origin due to poor computer technology and limitations in the field of microelectronics.
Specifically, even the experts involved in the imitation can't say clearly, Meng Jianye just gave the parameters with a big mouth, which is not counted, and he was ashamed to say that he borrowed French technology, and he obviously copied it and didn't understand it.
After all, towed sonar can be taken out for a small amount of money, and the Underwater Acoustic Research Institute is desperate, because their current situation is not as good as that of the Ship-to-Air Missile Research Institute a few years ago.
Because of this, they slandered their stomachs, but for the sake of small money, they had to praise Meng Jianye with a clear conscience, and these words were really good.
Ibri Khan also felt that Meng Jianye said very well, there was no way that he was really tempted, but because of this, his eyes that were almost bright soon turned dim, without him, the price of such a configuration is naturally expensive, where can they afford it in Bangladesh?