Differ from the up in the air, the background noise in the ocean reaches to 90 decibels."Radicle Luo" class submarine at with economic sail soon Qian sail, the noise sending out approaches this class.It be been "black hole" in the ocean by the great fame of military expert of the west.
Our country of 091 Chinese attack pit submarine with 092 summer class guided missile pit submarine early Qian sail noise, unexpectedly be up to 160 decibels and 165 decibels, still be up to through many improvements of in the last yearses 150 with 155 decibels.The military expert of the United States ever sarcasm way:"Win a total pit submarine to leave port from Guangzhou, can hear in the Saigons of Vietnam."093 Tang classes attack that is new pit submarine and 094 week class guided missile pit the submarine has already declined to 125 decibels and 130 decibelses respectively, but attackstones with the Los Angeles class of the United States to check a submarine of 120 decibels, the sea wolf class attack pit submarine of 95 decibels and Ohio class guided missile pit submarine of 100 decibels be very and far still mutually apart from.To the sonar technique of contemporary, the noise lowers 15 decibels each time, probe into distance and then will be as low as 50%-70%.This it is thus clear that submarine mute technical great significance.
The submarine engineering of the our country science and technology personnel over a long period of time for lowered noise to make unremitting effort.In recent years under the background that military research huge devotion and research environment consumedly improve, obtained important breakthrough, invented the boat body of"artificial shark skin" surface processing technique.They absorbed the Russia system"radicle Luo" class submarine to outside stick the way of thinking of eliminating the sound tile, but make important improvement again.Bionics house early is inspired from the fish body, British follows dolphin skin, sticking of gave birth to a kind of speed boat noodles material, in the center have numerous rubbers at the 2 F rubber small sign pillar, was full of a kind of liquid in the crevice.Stick it in the surface of contact water of speed boat, when the speed boat high speed sails stick a boat body of aqueous of flow line very smoothly, can raise a sail soon.The bionics house of our country studied a white shark, all of its epidermises were the small sting slice for standing ups, these of all of the flat surface follow aqueous of flow line.When the white shark high speed goes forward, stuck the sea water of epidermis to follow these to form a layer to flow and consumedly lowered aqueous resistance.
The submarine can't grow a small sting slice and need to pack the up so lovely sting slice for it.First according to experimenting a data, made sure the size and shape of sting slice that the submarine surface needs, and decide to make with a kind of engineering nylon.Because the chemist of our country invented to glue the double set of matching this kind of nylon and iron to glue to match and glued 1 set to match an on the nylon, another is in the steel surface, two close after sticking to match, 15 minutes namely prison ground in the prison glue to match together.Can still in the underwater homework.According to measure the surface of calculating a Sung class attack submarine to need 31,320,000 slices of this kind of nylon stings slice, certainly still have to flow line to with accuracy arrange according to the surface.
The surface of submarine is BE welded by a piece of piece of steel plate but become, the engineer is on the high performance computer and weave the last number to all steel plates, while imitating the steel plate of true each submarine and sailing flowing of its top line, and make sure that Long Ci Pian's position being on-line and reducing a damping flowing, according to the actual shape and size of steel plate, controls significant noodles printer and prints out and flows line and nylon sting slice position diagram and steel plate serial number.Ascend by this again dry gum not, send downwards one work preface, control in the calculator under, one slice nylon sting the slice accurately glue to stick on the marking, again from examination personnel check.
Chemical engineering teacher and then carry on changing sex to this kind of nylon, produce the nylon thin slice of , soft, and kept to match sex with gluing of steel.The calculator control makes the nylon thin slice cutting into the similar size of steel plate according to the serial number, and according to the size and position of the nylon sting slice base of this steel plate, at top tee off a bore of.It at the right moment set up have already glued a gluing of nylon sting slice paper, the nylon stabs all of slice and base to peep out.Make again these two kinds of nylons firmly glue to put together, became "artificial shark skin".As long as toring to glue paper, this"artificial shark skin" peeps out the base of the nylon sting slice of a , then with together the boat body of the serial number steel plate difference up differently glue to match, make of close stick to match.So complicated work preface be for raising a gluing of the nylon sting slice and boat body to match strength.The nylon slice replaces an antisepsis paint, a kind of material contained by it, can also obstruct rattan pot the etc. sea living living creature to glue in the boat body, this also learns from shark to come.
Can imagine this special kind nylon,cheap beats by dre, glue to match and start construction method, the all these turned a fee science and technology personnel of how much strenuous effort.For prevent°froming gluing to match a toxicity's injury for human body, glue worker who stick"artificial shark skin" and instruction superintendency personnels must put on a tight protection to take.The hot summer in July in Shanghai, the difficulties of the construction is imaginable.Though adopted by turn and arrive side a retiring room rest of having the air condition, drank fresh and cool health care beverage, be still abnormality hard.Pass by much twoer lunar of of courageously war, finally completed the first reformation of domestic submarine till mid- August.
The dead hour on August 17, all over glue 303 boats of full"artificial shark skin" are slowly dragged along into a river watered in the middle of filling with aqueous dockyard, have no an interest ground to drive eastwards sea appointed waters.
Today, will press to test outline to pursue an item to carry on a test.
"Artificial shark skin" originally for reducing Zu, but experimenting after model, discover that it has to best reduce noise effect.The vibration of boat body inner part water acoustician confirms from the software imitate true, , greatly parts of absorbabilities, and then have one part because the function of small sting slice presents diffusion-like in shape disappear in the neighborhood of boat body of water current in.The effect mightier than eliminates sound tile.However, all of all theses are theories and laboratory to predict, actually how, need the test report of trial run.
BE hunting sonar monitor and noise of submarine and antisubmarine helicopter to record an instrument side, the experts anxiously look at.303 boats arrive 300 meters depth, the beginning full speed Qian sail, the sail soon soon cross 22 sections and finally come to a the astonishing speed of 31 sections.At this time hunt a submarine already hard follow it, the noise of oneself has already covered up the weak noise of 303 boats when the high speed sails.The test of the haulage type sonar array that can depend on an antisubmarine helicopter.Completely come to a the index sign of scheduling to.The noise that the experts concern most after 23 section sails is soon basically stability's voice class in 100 decibels, the pleased form of the experts is at the color, for the sake of not the work of interference sonar soldier, can be secretly happy.303 boat start the economy cruise electrical engineering close lord electrical engineering, the sail soon declines to 11 sections a while, the noise declined to a while more 95 decibel the following, the sonar soldier absolutely needed to can not find it, just according to the sail vestige in past just force to follow.The experts cannot helped but any further and shouted together.303 boats changed a direction just at this time, the sonar soldier canned not found it a while.Straight-tempered 1 followed to shout.Hunted a submarine to start active sonar to search it, incredibly also can not find, until drove to 303 boats to just unwillingly find out it afresh above.Will not have on the ocean thus of in fortune lap.Originally"artificial shark skin" still strongly absorbs the voice of active sonar wave.
The reformation of 303 boats obtained success.The function has already come to a the level of the class of"radicle Luo" and absorbs the ability of active sonar voice wave to be still higher than it.Soldier Wei decision as to it's quickly remaining is 039 another main forces of the Sung class submarine and submarine troopses, design already set in 1993 of 035 improvement type the clear normal regulations submarine carry on a same reformation.
The reformation of old boat undoubtedly raised the fighting strength of our army submarine troops, but the experts feeling keenly far and far don't develop gold battery dragon's function.They design by the latest principle of the super normal regulations submarine have already been computing completion on board to conclude to reach a design, will with brand-new of the facial expression appear in my navy's sequence.
Previously the soldier Wei has already decided to put together the reformation knot of artificial shark skin technique and power system checks a submarine to 091 Chinese attacks 405 boats carry on important reformation to obtain experience of pit submarine reformation.
The bottle gourd island checks submarine factory
Checking a submarine to have high, quick speed and continuous sail dint of power is big, the equipment weapon is many, long-term is numerous advantages, have at underwater activity etc. than the normal regulations submarine more superior battle function and vaster movable scope.Therefore, pit the submarine can provide with Qian to shoot ballistic missile to serve as the strategy pit awe task;Or provide with antisubmarine
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