There is news that the US military strategic nuclear submarine sternar system is 300 to 400 kilometers. This distance should be an exaggeration propaganda for the US Navy to determine the opponent.
The sonar installed by the submarine has specific conditions for the discovery distance of the target, not a value. For example, the same or the noise exhibited in different speeds and different sea areas, the submarine is different in different speeds, different seas, different depths, so the submarine sound is far from the probe of the ship. close. In general, the sound of the sound is significantly greater than the detection distance of the high noise ship, and the detection distance of the passive sonar is greater than the active sound.
▲ The US Navy’s "Lafayette" strategic nuclear submarine in the 1970s, the US Navy has three generations in the last century, the first generation of "Washington", the second generation, "Izu Allen "Level, the third generation" Lafayette "level, they all have an AN / BQS-4 active detection sound, AN / BQR-2B passive detection, and An / BQR for remote alert and search tracking 7 passive sound.
▲ The "Lafayette" strategic nuclear submarine’s BQR-7 scented scenario is detected, and the distance from BQR-7 is farthest.
It consists of 156 hydrobial primitives that are arranged in 3 columns, and in the boat first, it is half a circle, and is extended to the two bolden views, and the largest detection of underwater is 100 nautical miles, approximately 185 kilometers. This is already an ideal state of the detection distance, which is the maximum detection distance of the enemy’s high-speed ship when the submarine is navigated at low speed.
Therefore, the detection distance of 300 to 400 kilometers is not reached.
Even now, the current quiet submarine, with the most advanced passive drag line array in low-speed sailing, and it is difficult to achieve such an amazing detection distance for the ship. The detection distance of 300 ~ 400 kilometers may be just the data in accidents. It is a US navy to exaggerate propaganda. The purpose is to give the other party’s psychological deterrence. ▲ BQR-7 Sounds of the Control State ▲ BQS-4 Sound Division In addition, the submarine sound is very low in the long-distance detection, and can only be used to be alert. Active detection such as AN / BQS-4, high precision, but the maximum detection distance is less than 20 kilometers.
The maximum detection distance of the AN / BQR-2B passive detection sonar is tens of kilometers.
Therefore, the submarine sound is from 130 to 160 kilometers to distinguish the ship type is also unable to achieve, and it is also a propaganda. ▲ BQR-2 Sound of the Constitudes Modern Equipment Most Popular Semi-Senior Milky Mid-Senior Military Helicurer’s combat radius, usually 150 ~ 200 kilometers, so the 150 kilometers of the card-25PL carrier helicopter has the radius of combat, not Difference. The Soviet Navy did not think that the aircraft of the card-25PL was not enough, but the overall performance of the card-25PL was relatively poor, so we went to develop a new card-27 carrier anti-submarine helicopter.
In fact, we look at the radii of the subsequent card-27, there is no great increase in card-25PL.
▲ card -25pl Ship-up anti-sublimation ▲ card-27 Ship-up anti-submarine helicopter stone macro: "Shipborne Weapons" Executive Editor For the Shenzhen Satellite TV Special Commentator, Southern Defense Zhicu Consultant, the Tribute Research Center of the International Industrial and Commercial School of Yunnan University of Finance and Economics.
There is a "Japanese military situation", "Korean military report".
Production: Science China Monitor: Guangming ‘s Technical University Department of "Weapon" magazine "