Military Review

Project of the guided bomb KAB-500С

The experience of military conflicts of the last decades perfectly demonstrates the fighting qualities and perspectives of guided bombs with guidance systems based on satellite navigation. Such weapon proved to be a convenient and effective means of destroying stationary targets, the coordinates of which are known in advance or can be established directly during a combat sortie. For certain reasons, the Russian defense industry began to create such guided bombs much later than foreign ones. Nevertheless, the work led to the emergence of advanced weapons, which is of great interest for both domestic and foreign military.

The existence of the first domestic project of a bomb with guidance from the signals of navigation satellites became known at the beginning of the last decade. In 2003, the GNPP Region (now part of the Tactical Missile Weapons Corporation or KTRV) at the MAKS exhibition for the first time demonstrated a prototype of the latest Russian-designed guided bomb. The new project, in accordance with existing rules, received the designation KAB-500S: “Adjustable aviation 500 kg caliber bomb, satellite guidance. ”

During the first demonstration, it was reported that prospective ammunition was being proposed for attacking control centers, warehouses, industrial enterprises, infrastructure facilities, etc. In addition, they talked about the possibility of using KAB-500С for the destruction of underground structures. The possibility of the destruction of ships and ships at the berths was also stipulated. Thus, the applied guidance system with the correction of the signals of navigation satellites, according to the statements of the developer, made it possible to attack various stationary targets with known coordinates.

Project of the guided bomb KAB-500С
Bomb KAB-500С. Photo by

It was reported that a promising aerial bomb could be used by existing and prospective domestic aircraft. The permissible dumping altitude was set in the range from 500 m to 10 km, the speed of the aircraft carrier during a dumping - from 550 to 1100 km / h. At the same time, the target was hit with a circular probable deviation of no more than 5-10 m.

The product KAB-500С received a complex-shaped body formed by several cylindrical and conical parts. Thus, the head fairing consists of two conical surfaces, and the central part of the body is made in the form of a cylinder. In the tail provides a slight narrowing. The total length of the bomb is 3 m, the maximum case diameter is 400 mm. To ensure the required aerodynamic characteristics of the bomb received a set of planes. On the head fairing X-shaped stabilizers are mounted, in the tail - wings with rudders. Wingspan - 750 mm.

Most of the body of the bomb is given for the placement of high-explosive concrete combat unit. With the total mass of the product at the level of 500 kg (according to other data, 560 kg), the warhead accounts for 380 kg. The warhead has a thick-walled body that provides penetration of target protection or penetration into the ground. The weight of the explosive warhead - 195 kg. The warhead is equipped with a contact fuse with three types of slowing down. Thus, a bomb can explode directly upon contact with a target or with some delay, after it penetrates inside the object.

The bomb KAB-500С received a new control system, the main element of which is the PSN-2001 navigation indicator receiver, developed in Compass ICD. This device is designed to receive signals from satellite navigation systems, process incoming information and issue data on the necessary amendments to the flight path of a bomb. Due to a number of features of the receiver, it was possible to ensure sufficiently high accuracy characteristics.

It was reported that the PSN-2001 product provides simultaneous 24 channel reception of navigation satellite signals. In this case, there are three modes of operation: reception of signals only from the GLONASS system, only GPS systems, or parallel reception of signals from both systems. Automatics of the receiver-indicator is able to independently choose the so-called. working constellation of the navigation system, processing all available satellite signals. In this case, the signals of one preselected system have a higher priority and are received first. The remaining channels are filled by satellite signals from another system.

To improve performance in real combat use conditions, the PSN-2001 receiver indicator has a number of other features. So, the reception of signals from satellites is carried out through two independent antenna inputs, which allows you to maintain a confident reception when maneuvering the aircraft carrier and after a reset. Provides automatic monitoring of signal integrity and other parameters. Also, automation is able to independently update the almanacs of GLONASS and GPS systems. All necessary information is recorded in non-volatile memory.

In the future, GNPP Region and MKB Compass planned to improve the characteristics of the new bomb at the expense of some innovations. The overall improvement of equipment, ensuring compatibility with new navigation systems, as well as a number of other ideas were cited as methods of increasing combat effectiveness.

Applied guidance equipment, according to available data, allowed to bring the circular deviation of the bomb to 5-10 m. Thus, KAB-500С can be used to destroy various, including small-sized, objects with constant and previously known coordinates. In addition, the effectiveness of the use of such weapons was further increased due to the implementation of the “dropped-forgotten” principle: the pilot of the carrier should not perform any operations after dropping a bomb and can continue the task, or return to base.

By the end of the last decade, the KAB-500С guided bomb project reached the testing stage. Despite the best efforts of the developers, at this stage the new project faced some difficulties. In September, 2012, in the domestic media, there were reports of the failure of the Ministry of Defense from bombs with guidance from navigation satellite signals. With reference to unnamed sources in the military department, several reasons for this decision were indicated at once.

One of the main reasons for the failure was the high cost of guided munitions. A new type of bomb costs about 3 million rubles, while the existing free-fall ones cost the military several times less. In addition, a potential customer had doubts about the real effectiveness of such weapons and financial investments in them. The analysis showed that the upgraded Su-24 or Tu-22М3 bombers with modern aiming and navigation complexes are quite capable of providing acceptable accuracy of bombing, even when using unguided weapons.

The layout of the export bomb KAB-500S-E at the exhibition MAKS-2015. Photo by

Also unnamed sources in the Ministry of Defense spoke about some of the problems identified during the tests. It was reported that the Ministry of Defense began to check the new weapons in 2009 year, but over the next three years, the developer has not been able to fully comply with all customer requirements. Among other things, the military did not accept the bomb drop range. Despite the new guidance system, promising bombs should be dropped at a distance of about 6-8 km from the target. Thus, the aircraft carrier would have to enter the zone of the enemy air defense.

Soon after the appearance of information about the perspective guided bomb, the first information about its export version was published. Foreign customers planned to offer the product KAB-500-E, which is a slightly modified version of the basic design. Alteration in the export version entailed some deterioration in a number of characteristics. Despite this, the proposed ammunition is still of particular interest to customers.

While maintaining all the main features of the basic design, the bomb KAB-500C-E has a smaller range of discharge heights. Unlike the base CAB-500С, it can be dropped from heights no more than 5 km. The range of permissible speeds remained the same - 550-1100 km / h. Also slightly reduced accuracy rates. The circular deviation of the export bomb is within 7-12 m. The remaining characteristics and design features remain unchanged.

Back in 2012, the first information appeared on future foreign shipments of a new, adjustable bomb. Starting overseas customer KAB-500S-E was India. The first bombs were sent to the Indian military in 2013. Also appeared unconfirmed information about possible deliveries to China and other countries.

Due to certain circumstances, the guided bombs KAB-500С have not entered service with the air forces of Russia. However, the export version of such weapons interested some foreign countries and became the subject of supply contracts. Because of this, the first domestic draft of an adjustable bomb with guidance from navigation satellite signals can only be called successful partially. The defense industry failed to provide its army with new weapons, but promising bombs still replenished the arsenals of foreign countries.

On the materials of the sites:
Dear reader, to leave comments on the publication, you must to register.

I have an account? Sign in

  1. corporal
    corporal 30 September 2015 06: 13
    10 th
    The defense industry failed to provide its army with new weapons,
    The crisis wanders through Europe, and we spit, we are always in ... opera
    The Yankees JDAM appeared in 1997, our engineers again do not catch nichrome mice.
    1. War and Peace
      War and Peace 30 September 2015 11: 06
      In addition, the potential customer had doubts about the real effectiveness of such weapons and financial investments in them. The analysis showed that the modernized Su-24 or Tu-22M3 bombers with modern sighting and navigation systems are quite capable of ensuring acceptable accuracy of bombing even when using unguided weapons.

      It was reported that the Ministry of Defense began testing new weapons back in 2009, but over the next three years, the developer organization was not able to fully comply with all the requirements of the customer.

      what does it mean? Is this bomb accurate or not accurate? the question is as usual the easiest WHO LIES? designer or MO? It seems to me that if this cab500 became the subject of purchase and sale, and India purchased ammunition, India usually doesn’t get along, then the bomb is not so bad and the manufacturer did withstand the parameters ...

      In September 2012, there were reports in the domestic media that the Ministry of Defense had refused bombs with guidance from navigation satellites.

      Considering that Taburetkin will not be remembered by night, he left in November 12, then this whole story falls on the Minister of Defense Serdyukov and his department, which in his time was engaged in more sabotage than strengthening the army, we must think that the bomb is not so bad, as they represent us here ...
      1. Genry
        Genry 30 September 2015 11: 41
        This class of homing bombs should be with wings (gliding).
      2. The comment was deleted.
    2. chunga-changa
      chunga-changa 30 September 2015 12: 17
      Quote: Corporal
      our engineers again do not catch nichrome mice

      For certain reasons, the Russian defense industry began to create such guided bombs much later than the foreign

      It’s a pity that they didn’t write about the reasons, there is nothing secret there, on the contrary, it would be understandable how not just it all got and how much work had to be done.
      It's not a bomb, the garbage bomb, and not the guidance system, everything is simple there too, the Chinese are stamping sensors for 20 cents. Before making such bombs, you need to solve the problem of determining and linking the coordinates of the target. The military should have a system such as googlemaps in which you can attach the object to the coordinates and enter the received coordinates into the bomb. There are problems with this, if you stupidly use GPS and Google maps, then at the right time the bombs will begin to fall away from the target, it’s good if the Americans control and easily manipulate GPS coordinates and electronic maps in their interests. That is, before creating satellite-guided bombs, you need to create a GLONASS satellite constellation, achieve the necessary accuracy of its operation, obtain a set of digital maps of the earth’s surface and attach them to the GLONASS coordinates. Now you can make bombs to destroy stationary objects, the coordinates of which are known in advance.
      In order for the bombs to be able to hit mobile targets, we also need a system of operational reconnaissance and target designation, this is a separate story, and while this is not there, as soon as it appears, we will immediately be shown new bombs and will write again "For certain reasons, the Russian defense industry has begun to create such guided bombs were much later than foreign ones. "
    3. anti-Semite
      anti-Semite 30 September 2015 21: 53
      recall what we had in the country in 1997?
    4. HMR333
      HMR333 3 October 2015 19: 01
      Well, yes, the Yankees, they shouted that about 10 years ago F35 will do that everything is ready, they just can’t finish the damn thing so that they had there in 1997 ........
  2. Zaurbek
    Zaurbek 30 September 2015 07: 55
    The technology worked, the need arises.
  3. Old26
    Old26 30 September 2015 08: 33
    The range of permissible speeds remained the same - 550-1100 km / h. Also, accuracy indicators are slightly reduced. The circular probable deflection of the export bomb is between 7-12 m. Other characteristics and design features remained unchanged.

    That is, the most important parameter of the KAB is reduced.
    It is not entirely clear why once again tread on the same rake, creating export options with poor performance. It is clear that our segment of buyers will take what they give him, but this means that we initially "discarded" buyers more "rich", offering them CABs for which the QUO has become 7-12 meters instead of pre-existing 4-7. Can someone explain this hair dryerОmen?

    The Americans, so we don’t talk about them, sell weapons with the same characteristics as they do for themselves. We are starting "reinvent the wheel"artificially degrading export specimen characteristics
    1. Kalmar
      Kalmar 30 September 2015 11: 39
      We are starting to "reinvent the wheel", artificially degrading the characteristics of export samples

      There is a suspicion that it is not a deliberate deterioration in performance, but a banal inability to provide them. For "their" KVO bombs are ordered to be set at 7 meters (that is, they will be ordered to assume that it is exactly that), but a foreign customer can double-check, so one should be more honest with him.
  4. Mera joota
    Mera joota 30 September 2015 10: 23
    KAB-500S is an indicator of the level of domestic ASP. Those. at the baseboard level. It was necessary to try to create a UAB worth 100 thousand US dollars (at the rate at the time of creation). Moreover, for the manufacture of KAB-500S used KAB-500L, it is generally beyond comprehension. The United States uses conventional free-falling bombs to create a UAB, we use a UAB to create a UAB ... Moreover, during the tests, the requirements of the TTZ KVO 2-3 m were not able to fulfill and ... they changed the TTZ. The reaction of the military is quite expected ...
    1. Vadim237
      Vadim237 30 September 2015 20: 07
      Ours need guided bombs with a flight range of 60 kilometers, with a maximum drop height of 15 kilometers.
  5. Non-jumping
    Non-jumping 30 September 2015 18: 14
    The analysis showed that the modernized Su-24 or Tu-22M3 bombers with modern sighting and navigation systems are quite capable of ensuring acceptable accuracy of bombing even when using unguided weapons.
    The lodge is arrogant, but the people are being waged. Hooray! Everyone is afraid of us! We will throw all the hats! Even if we don’t have hats! Blah blah blah, all shalom ...
    1. shans2
      shans2 30 September 2015 19: 09
      Ukrainian army is stronger, BGG
      1. Non-jumping
        Non-jumping 30 September 2015 21: 46
        And here is the dill army? Burn it with a yellow-blue flame along with its fascist liquid masters!
    2. Kalmar
      Kalmar 30 September 2015 21: 40
      The lodge is arrogant, but the people are being waged.

      Why lie at once? First, the concept of "acceptable accuracy" is stretchable over a very wide range. Secondly, the air defense factor is not considered: if the enemy does not have one and it is possible to drop bombs directly over the target, then yes, the accuracy will be quite at the level.
      1. The comment was deleted.
      2. Non-jumping
        Non-jumping 30 September 2015 22: 09
        I understand that free-fall bombs are quite suitable for bombing residential areas. But in general, the experience of continuous wars "a model of freedom and democracy" has proved that in the conduct of hostilities against other armies, in comparison with controlled ones, free-fall bombs are generally ineffective. And in case of a major war, both of them complement each other: simple - in quantity, controlled - in quality. In addition, in the United States, special modules have long been produced, including folding wings, control planes and homing heads (recently in the United States they rely on satellite as the most effective in terms of independence from any weather conditions and time of day, the most convenient ones are dropped and forgot, the most accurate and cheapest), allowing you to easily and quickly turn old free-fall bombs into guided ones. It turns out very cheap. In Russia, this was developed a long time ago, but as always, internal "partners" (the fifth column) bury such developments under the most ridiculous excuses. Either they have a short huy, or a long shirt ... In advance, I will say that it is certainly not worth completely switching to exclusively satellite guidance systems for guided bombs, since the GLONASS system in the event of a real war can be destroyed in a matter of hours and minutes (in the USA, unlike Russia has long been armed with anti-satellite missiles capable of shooting down low-orbit satellites, and the Navstar (GPS) system is generally American military and is strictly controlled and controlled by them) There should be a reasonable measure in everything.
        1. Foxmara
          Foxmara 22 February 2018 06: 50
          Quote: non-jumping
          in the United States, unlike Russia, anti-satellite missiles capable of shooting down low-orbit satellites have long been in service

          And we are armed with electronic warfare that will disable American satellites without launching missiles at all. But they will not tell you about this, it is not proper. It's like a black demobilization ..
  6. sesame
    sesame 4 October 2015 06: 27
    The other day, the military said on television that they used the cab500 in Syria. And the article says that they were not accepted into service?
  7. Peterhof 73
    Peterhof 73 6 October 2015 22: 04
    Do I understand correctly that this bomb is now being tested in Syria?