In recent days, netizens have speculated on various signs: the first domestic aircraft carrier will conduct a sea trial in the near future. But up to now, speculation has not been confirmed by the authorities. When does the sea trial start? What kind of action is the real sea trial? What is the sea trial try? How long does it take to be in service? The current situation Bureau invited three military experts Cao Weidong, Li Jie and Yue Gang to answer. The first homemade aircraft carrier. Graph / net friend You need to move in the shallow sea and the deep sea. Checking the current situation: before an aircraft carrier enters the sea trial, what signs will be needed to prepare for the sea trial conditions? Cao Weidong: the so-called sea trial is the sea voyage test, that is, to test the process of sea going after the ship is built. The sea trial must inspect the aircraft carriers outfitting and carry out the real ship test in the trial sea area according to the prescribed sea conditions and sailing conditions. The purpose is to test the overall, system and equipment performance, reliability, stability and coordination of aircraft carrier after actual construction or repair. During the voyage, can the test power and the full load of the power run? At the same time, the sea test will test its power system to meet the design requirements, because in the static test, you can not test its speed, it is necessary to test the ship speed in the sea test. And its resistance to wind and waves and weapons and equipment must be tested during the sea trial. At sea, the power system, power system, wind wave resistance and weapons and equipment tests can not be completed, so the sea trial should be divided into several stages. In aircraft carrier test, the main types of test are as follows: overall performance test, including maneuverability test, airworthiness test, fast test, noise test, vibration test and electromagnetic compatibility test. There are also tests for the propulsion system, including the inspection of the running conditions of the system and the inspection of the systems reliable operation. Power system tests should also be carried out, including power supply test and emergency power supply test. For the operational system test, the correctness test of information transmission and the functional test of channel organization are mainly carried out. The test of weapon launcher and auxiliary system mainly launches the test of weapon launching. For example, in the process of sea trial, if the speed of aircraft carrier is not up to the design standard, corresponding measures should be taken to solve the problem. The same is true for weapons and equipment. All kinds of radar, artillery and missiles should be tested accordingly. Like full load power and emergency power, in the actual operation process, if we fail to solve the problem, we must solve the corresponding problems. The sea trial is a very important stage, just like a student examination, whether it can pass or need to pass and test in the sea trial. The aircraft carrier can only be considered as a general balance test before the sea test, without speed, no turning radius, without the use of its own power, and no real sea test. After all, all important data are checked in the shallow sea or deep sea area to move and go for a while before entering the sea trial stage. Li Jie: the aircraft carrier has been in operation for nearly a year since last year. Before the sea test, the installation of the outfitting of the internal equipment should be finished, and the facilities around the scaffold are cleaned up, and the boat is dragged and dragged. After the personnel are in place, the distance from the formal sea test is quicker. Yue Gang: there are five main nodes in the construction of an aircraft carrier: launching, launching, dock mooring, sea trial and delivery. Now, before the sea trial, we have completed the three major nodes, basically turning the aircraft carrier from the blueprint into a fully formed equipment, and its workload is basically completed by 80%. Before the sea trial, the mooring test of the wharf has integrated all the equipment of the aircraft carrier except the carrier aircraft. At the same time, commissioning of the power system at the docks, installation and commissioning, testing of maximum power operation. At present, all the installation of the mooring test is finished, the scaffolding is dismantled, and the host has also been tested several times. The whole ship has been completely formed and has the conditions of the sea test. Sea trial is divided into technical sea trial and operational environment sea trial. The first sea trial is a technical sea trial. It mainly tests the actual operation of aircraft carrier equipment at sea, and adjusts and perfected the corresponding gap. For example, the test of the power system requires high-speed navigation at sea, turning sharply, turning a big bend, and testing to resist big waves. There is also a test deck tilt degree to see which weather conditions can ensure the normal landing and landing of carrier aircraft. The list of sea trials is very long, not one time. The core of the first time is the power system. Once the aircraft carrier goes out, it has to go back to the factory for adjustment. The first homemade aircraft carrier. Graph / net friend What is the sea trial trying Test power navigation communication radar missile system and so on Inspection time: why should the carrier carry on the sea test? What on earth do you try? What are the steps of the factory and the military? Cao Weidong: the sea trial is not equivalent to the service. Only after the sea trial is over can the military be handed over to the military. After completion of the mooring test and elimination of all defects, the aircraft carrier will be able to conduct the sea trial according to the outline of the voyage. A trial organization should be set up before the sea trial, the trial plan and safety measures should be implemented. All parameters, defects and opinions were recorded throughout the experiment. Find out the reasons for the defects and eliminate them, fill in the test registration form as the original materials for handling the test certificates. After completion of the test, fill in the shipping test certificate and sign by the representatives of the parties concerned. The process of sea trial is mainly composed of military representatives and factory personnel. Li Jie: the domestic aircraft carrier has been away from the sea trial for a year, and it is a normal cycle. A warship is equivalent to a product. After completion, it needs to be tested and qualified. The aircraft carrier is a heavy weapon in the country. This is the case. The whole unit must be thoroughly tested before it can be delivered to the troops. What is the difference between the sea trial and the other warships? The aircraft carrier sea test is a complex giant system. Its components and equipment systems are far more complex and more sophisticated than other ships. The military tests are mainly around the armys future operations, including weapon systems, radar systems, and so on. Some systems have to wait until the navy is delivered to further verify its performance. The Liaoning Maritime Safety Bureaus prohibition notice is divided into two regions, one is offshore area, the other is offshore area, which takes a week. From this point of view, the sea area chosen by the sea trial is still exquisite. The coastal sea condition is simple, mainly for simple operation, the focus is still in the deep sea. After all, the aircraft carrier is more deep in the water, and the weather conditions and the complex sea condition can be used to test the effect. For example, when we learn to drive a car, we have to practice at home or driving schools. Yue Kong: the aircraft carrier has to spend its full life at sea, and the sea is the qualified soil for its mission. Therefore, after the construction of the equipment on the land, it is necessary to make full use of its performance at sea. As the weapon platform of modern technology and technology, the aircraft carrier has the most severe test of its electronic equipment and mechanical equipment in the ocean, including the shock of sea waves, the corrosion of the sea water, and the cold and severe heat on the sea. The factory sea test is mainly according to the design requirements to carry out technical testing, the power system can run a few knots at sea, the quick turning and emergency brake and other maneuverability, the wind and the wind have no problem. Under the condition of large wind and wave, whether the deck wobble is suitable for aircraft take-off and landing, and can the signals of various electromagnetic frequency bands be compatible, The military sea test mainly centers on the actual environment background, for example, the carrier carrier and the carrier body are matched, including loading, takeoff, recycling, refueling, projectile, operation and so on. The first homemade aircraft carrier. Graph / net friend Sea trial cycle The shortest three months to half a year, the longest one year or so Time Bureau: how long is the general sea trial cycle? Why do we issue a notice of prohibition to prevent other ships from intruding? Cao Weidong: the sea trial wants to test the different performance of the ship. Why should the corresponding area be blocked up? If a small fishing boat suddenly comes, it will not be able to test speed if it stops there. At the same time, the turning radius and resistance to wind and wave resistance of the aircraft carrier have certain requirements for the sea area and weather, such as the resistance to wind and wave, and must have huge wind waves to test the resistance to wind and wave resistance and the resistance to sinking. The main test of the aircraft carrier in the sea area is carried out according to the design target, and the corresponding external conditions need to be satisfied. The sea trial cycle is usually one year, and it is actually based on the test condition and has no fixed term to achieve the design standard as the time node of delivery. It is assumed that all the sea trial items will be tested in one month, and the service time will be very fast. If there is an unqualified project, we must improve it. After improvement, the result is not expected, so it needs repairing. Check the current situation: how to deal with problems encountered before aircraft carrier service? Cao Weidong: in the process of testing, it is the Departments responsibility to find the problem. Li Jie: the problem that the complex can not be solved will be solved in the factory. If it is a small problem on the ship, the general sea test will be accompanied by engineers and technicians. Yuegang: there are problems with the aircraft carrier before they are served. They are resolved by the manufacturers. Once the sea trial is completed, the assets are the troops. If there is a man-machine operation problem, it is necessary for the army to adjust itself. If people and equipment are adjusted, the army in the first few years can be upgraded to the factory. Once the combat effectiveness of the aircraft carrier is formed, it is necessary to repair and refit the port. Then we need another contract, which involves a warranty period. Time Bureau: is the pilot sea trial done alone? Do you need other ships to accompany them? Cao Weidong: the sea trial mainly tests aircraft carriers, and other ships are guaranteed. For example, when the aircraft carrier leaves the dock, it is mainly dragged by a small boat. In order to save oil, manpower and time, the ship should be towed away from the wharf by tug to save oil, manpower and time. The other ships play a role of auxiliary and guarantee in order to save oil, manpower and time. Li Jie: the main body of the sea trial is an aircraft carrier, and it has nothing to do with other ships. Yue Kong: the sea test area of the aircraft carrier is basically in the doorway of the Bohai Bay. There is no danger of the enemy. It does not need to be escorted by a large warship. In the course of the sea trial, there will be several guarantee ships, also known as carrier mamma, and the tonnage is also large. There are shipyard technicians and military personnel. The pilot sea trial will be able to test several sea areas. During the period, some small naval vessels may be sent to carry out the sea level vigilance to prevent other fishing boats from running when the carrier is running at high speed. Bureau of investigation: are there any items that are not tried in the sea trial? Can we confirm whether they are qualified after waiting for service? Cao Weidong: aircraft carrier power, power, weapons and equipment and other major design requirements, the need to achieve indicators to be delivered to the Navy. Some of the projects fail in actual service, and there are also some problems to be improved. For example, the aircraft carrier can run to the 30 section of the sea test, but in actual use, the speed is reduced because of the longer course time, which needs to be further improved. Check the current situation: if the sea trial is progressing smoothly, is the domestic aircraft carrier expected to serve in the second half of this year? Cao Weidong: because this ship is the first independent aircraft carrier developed in China, it is still in the stage of experience accumulation, so it can not be too fast. According to the rhythm of other countries, the general sea trial takes three months or half a year to serve. Like the United States, there are about 10 aircraft carriers. The maturity of the aircraft carrier is high enough to form an assembly line. All in all, there is no fixed period for the sea trial to serve, usually several months, half a year or even a year, usually not more than one year. If all the indicators of this years sea trials reach normal levels, they are expected to be delivered to the navy in the second half of this year. The first homemade aircraft carrier. Graph / net friend Will form a double carrier battle group Double carrier can improve actual combat capability Check the current situation: compared to the Liaoning ship, how long does the domestic aircraft carrier form combat effectiveness? Cao Weidong: the sea trial cycle of domestic aircraft carriers will be shorter than that of Liaoning ships. The power system, power system, wind wave resistance of the second aircraft carriers should be accepted as the design targets, like the Liaoning ship, but the test of the carrier aircraft will be much faster than before, because at that time the Liaoning ship had no flight experience of the carrier, all of which began from zero. Today, the new aircraft carriers ski jump take-off can be tested according to the experience of Liaoning ships take-off and landing in recent years. Li Jie: the Liaoning ship has been in service for less than 6 years. As a training ship for scientific research, it now has considerable combat effectiveness. Compared with the Liaoning ship, the domestic carrier is equivalent to the real combat type carrier. In the future, the domestic aircraft carrier will be more able to meet the requirements of the execution of the mission. Compared to the sea trial of the Liaoning ship, it is believed that the procedures of the domestic aircraft carrier sea test will be more scientific and more scientific, the experience of the personnel will be more abundant and some possible problems will be predicted ahead of time, and the test will be more rapid and accurate. Cao Weidong: quantitatively speaking, when two aircraft carriers fight, of course, they can form a double carrier battle group. The aircraft carrier usually has to go through 3 cycles, namely training, operation and maintenance. When one carrier is repaired, another carrier will be on duty, which can solve the problem of perpetual motion. It is impossible for each ship to be a perpetual motive and always work there. When the two ships are repaired, a so-called double carrier battle group can be formed. Yuegang: the formation of two aircraft carriers shows that our actual combat function will further improve in the future, and the number of fighter planes with single carrier aircraft will probably be thinner. The tonnage of the Liaoning ship model, with all its aircraft added up to about more than 40, has a real combat force of about 20 of the main aircraft, and these planes can not be put in the air. Some aircraft are needed to cover them. If all of them are returned, the air will open the skylight, so it can only be patrolled in the air in batches. If there are two aircraft carriers, there will be more aircraft in the air, which can be alternately covered to enhance the reliability of carrier aircraft. If an aircraft carrier deck is attacked by the enemy and is damaged, the carrier can not be recovered, then the carrier can land on another carrier deck to backup the airport runway and improve the safety of the carrier aircraft. Therefore, the double carrier formation deterrent effect is improving, the two aircraft carriers will be more angry when they use them. The two aircraft carrier structures are basically the same, both are skid takeoff, the two are more able to cooperate with them, more tacit understanding, and better potential. Observing the current situation: how do you view the expectation psychology of the aircraft carrier every April? Li Jie: the navy is a comprehensive manifestation of national strength. Military intelligence will judge the sea trial time according to various signs of aircraft carriers and following some festival rules. As the end of April ushered in the naval Festival, this made it more hopeful. But there is still a gap between the actual situation, whether it is last years water, or this years sea test, the aircraft carrier should consider the hydrological weather, tide and other factors to carry out the final test, and can not rely solely on festivals. Source: Southern Metropolis Daily Author: Pan Shanju editor in charge: Han Jiapeng _NN9841 If there are two aircraft carriers, there will be more aircraft in the air, which can be alternately covered to enhance the reliability of carrier aircraft. If an aircraft carrier deck is attacked by the enemy and is damaged, the carrier can not be recovered, then the carrier can land on another carrier deck to backup the airport runway and improve the safety of the carrier aircraft. Therefore, the double carrier formation deterrent effect is improving, the two aircraft carriers will be more angry when they use them. The two aircraft carrier structures are basically the same, both are skid takeoff, the two are more able to cooperate with them, more tacit understanding, and better potential. Observing the current situation: how do you view the expectation psychology of the aircraft carrier every April? Li Jie: the navy is a comprehensive manifestation of national strength. Military intelligence will judge the sea trial time according to various signs of aircraft carriers and following some festival rules. As the end of April ushered in the naval Festival, this made it more hopeful. But there is still a gap between the actual situation, whether it is last years water, or this years sea test, the aircraft carrier should consider the hydrological weather, tide and other factors to carry out the final test, and can not rely solely on festivals.