LD 2000 30-mm Land Based Close-in Weapon System
The China North Industries Corporation "Lu Dun" 2000 [Land Shield 2000] short-range air defense weapon system is mainly used as the last defense system of the air defense system. It is used to destroy various air attack weapons such as air-to-ground missiles and precision guided bombs. It protects important targets such as command posts and radars. Such terminal defense systems were originally installed mainly on ships. This is mainly because the sea surface is relatively flat, the clutter interference is small, and the radar reflection area of the surface ship is large. Therefore, the anti-ship weapons of various countries were fielded very early.
It is said that China's 730 short-range defense system technology is derived from the French Samos short-range defense system. In order to further improve the operational capability of the Ludun-2000, China has also installed six Tianyan-90 ground-to-air missiles. The early LandShield-2000 system was not equipped with the Tianyan-90 air defense missile. This is an air-to-air missile specially developed for helicopter air combat in China. Seeker, digital signal processing system, with strong anti-interference ability, using laser proximity fuze and continuous rod warhead, the warhead weighs 3 kg, has strong killing ability, the full length of Tianyan-90 1.9 meters, diameter 0.9 meters, weight 20 kg, maximum range of 6 kilometers, shooting a small range of 0.5 km. The system is equipped with four stabilizers which are lowered before launch to improve the stability during shooting.
After the Second World War, with the advancement of technology, various advanced combat aircraft, air defense missile missile weapon systems, early warning aircraft and command automation systems have emerged constantly, and performance has also changed with each passing day, forming a system from high altitude to ultra low altitude and from far to near. With strict air defense systems, it has been difficult for traditional bombers to break through such air defense systems. Therefore, their attacks on ground targets have changed from the original volley bombing to out-of-zone attacks, including the use of various cruise missiles, air-to-ground missiles, and even ordinary bombs.
The GPS/INS guidance component and the gliding wing are equipped as an off-zone attack system, so that the main target of the air defense system, especially the medium- and short-range air defense system, is from the original aircraft to the missile-based, modern air-to-ground missiles and other guided air-to-ground weapons. The characteristic is that the speed is fast. Some air-to-ground missiles such as anti-radiation missiles can reach speeds below 3 times the speed of sound, and there is strong stealth capability. For example, modern cruise missiles use low-altitude penetration and stealth technology, and have strong penetration capability.
There are two main types of modern air defense systems; missiles and anti-aircraft guns. The former has the advantages of long range, high power and high precision. Some missiles also have the ability to fight after launch and have all-weather combat capability. They have become the backbone of modern air defense systems.
The artillery has the characteristics of high rate of fire, high initial velocity, no low altitude, and ultra low altitude dead angle. It has become the protagonist of the last stage defense system, and certainly not all artillery can serve as a short-range defense System. One of the major flaws of artillery is that the single-shot probability of the projectile is low. When the last-stage defense system intercepts, the other missile is already in the air, and the system is required to have a high probability of hitting, and it can be quickly destroyed. Therefore, the rate of fire is the most basic requirement for the final defense system, that is, the interception success rate is formed by forming a barrage on the route of the other missile.
The revolving cannons are made up of six or seven barrels and magazines around the axis. Each body tube has its own gun/machine, and the gun/machine cam groove in the outer casing of the casing drives the front and rear sliding, thereby completing the loading, pushing the bullet, firing, shelling and shelling. Each barrel is fired to a fixed position, so at the same time Only one barrel is firing, and each barrel will go to the firing position when it is rotated for one week, so it can fire six or seven rounds in one rotation since the barrel has multiple barrels per rotation.
The Chinese 730 short-range defense system has a rate of fire of 4,200 rounds per minute, a range of about 3 kilometers, and a reserve of 1,000 rounds. The main equipment of the artillery is a TR47C fire control radar and an OFC-3 photoelectric tracking system. The latter integrates a CCD camera, a laser range finder and an infrared thermal imager. The detection range for a small target radar is 10 km, the photoelectric system is 6 km, and the entire system weighs 8 tons. Its performance is close to that of the Dutch "goalkeeper".
Based on the 730 short-range defense system, China developed the Ludun-2000 mobile air defense system. With the TA-5450 truck of Taian Special Vehicle Factory, because the turret is large in size, it can only be installed at the rear of the vehicle. Therefore, the system can only shoot at the rear and both sides. In order to improve the accuracy of the system range, there are four vehicles.
The "Land Shield" 2000 (LD2000) short-range air defense weapon system is a newly developed land-based self-defense weapon in China. The system was first publicly unveiled at the 7th Abu Dhabi International Defence Exhibition in the United Arab Emirates in February 2005. However, before this, a few unclear related photos had been circulated on the Internet.
In September 2009, Jane's Defense Weekly also reported on China's Ludun-2000 system. In the article introducing China's anti-cannon system, Jane said China would "catch up with" the introduction of the Ludun-2000 system, which is considered to be the main target of air-to-ground missiles and weapons. It has the ability to intercept anti-radiation missiles flying at 2 times the speed of sound.
The system uses an 8x8 off-road truck as the chassis, and a remote-controlled rotating turret at the rear of the truck with seven 30-mm guns. The artillery has two ammunition boxes, each containing 500 pieces of shelled armor-piercing projectiles and high-explosive bombs. Above the gun is a wide-band tracking radar and a day/night aiming system with a laser rangefinder. The artillery has a rate of fire of 4,000 rounds per round and a maximum range of 3,000 meters, but the target destroying distance is generally between 1,000 and 1,500 meters.
The "Lu Dun" 2000 short-range air defense weapon system has a new appearance. In addition to the replacement of the new chassis, a 3 joint air defense missile launching box is installed on both sides of the turret at the rear of the vehicle. From the appearance of the launching box, it should be the ground-air type of the "Tianyan"-90 air-to-air missile. After the combination of the artillery and guns, the new weapon system constitutes an overlapping intercepting firepower, and the damage efficiency is greatly improved, and the high-speed target of the attack can be intercepted very effectively.
The "Lu Dun" 2000 short-range air defense weapon system is mainly used for the defense of strategic objectives such as airports, command posts and logistics centers. It can be used as part of China's multi-layer air defense system. In addition to destroying cruise missiles, air-to-ground missiles, helicopters and other small targets in the air, it can also eliminate exposed targets and enemy fire points.
The command vehicle with surveillance radar will provide target information, and a command vehicle can control 3 to 6 "Lu Dun" 2000 short-range air defense weapons. When the Air Defense Company has six "Land Shield" 2000 short-range air defense weapons, three are used to intercept the target and the other three can be transferred to the new position.
Although the Ludun-2000 has excellent performance, it has the same shortcomings as the short-range defense system using the revolver gun. Therefore, the carrier has higher requirements, which increases the cost and cost of the system. A shortcoming that cannot be ignored is that the diameter of the revolving gun cannot be too large to avoid affecting the rate of fire. The caliber is small and its projectile power is small. Therefore, it is used to deal with large-volume, fast-moving targets such as large supersonic anti-ship missiles.
At the same time, the force generated by the collision is not enough to make the target yaw, and because of the small size of the projectile, it is also difficult to adopt the new ammunition technology such as the proximity fuze pre-fabricated projectile. While the traditional artillery such as the Swiss 35mm anti-aircraft gun and Sweden 40mm anti-aircraft guns have improved the ability to destroy air targets by using AHEAD, 3P and other types of shells, thus narrowing the gap between the combat effectiveness and the effectiveness of the tube, plus the advantages of volume and weight.So now the national army field air defense system still uses traditional single-tube or double-mounted guns. China’s new generation of self-defense air systems is also expected to use double-tube 35mm high-altitude guns.
As the speed of the air-to-ground missile is getting faster and faster, the requirements for the speed of the final defense system are getting higher and higher. The cannon can only use multiple gun barrels to improve the system's rate of fire such as the short-range defense system such as Castan, which further increases the size and weight of the system, and its low power is still not solved.
Therefore, countries are now also inclined to adopt new systems and new technology artillery. The most striking of them is the laser weapon. In August 2018, the Raytheon Company of the United States successfully carried out the test of the shipboard laser air defense weapon. During the test, it was installed.
The laser weapon system on the warship is guided by the warship radar system, about 3.2 km away from the warship, with Four unmanned aircraft flying at a speed of 480 kilometers/hour, the laser's 32 kilowatts of energy burned the unmanned aircraft in a matter of seconds, and the unmanned aircraft was instantly a "fireball." Compared with traditional artillery, the laser weapon is fast and does not need to solve the advance trajectory. Therefore, the fire control program is simplified, the target can be directly burned, the collateral damage can be reduced, and the fire power can be changed quickly and flexibly due to the small recoil force. Strong ability to deal with multiple goals. Therefore, with the development of solid-state lasers, laser weapons have become the main development direction of future short-range weapons.
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