S-300P air defense missile system and its modifications
History of the S-300 complex
By the end of the 1960s, experience in combat use of various systems Defense in Vietnam and the Middle East, in particular the S-75 complexes, showed their low survivability when working with an enemy that has a significant amount of modern aviation, high toxicity and imperfect design of liquid missilesThe use of liquid-propellant SAMs with toxic fuel and a corrosive oxidizer required highly skilled personnel and specialized equipment to fuel the missiles. It's important to note that the first systems were single-channel, unable to effectively counter massive enemy air raids and highly vulnerable to jamming.
In this regard, in 1969, the USSR Air Defense Command set the task of developing a multi-channel air defense system capable of simultaneously firing at multiple targets regardless of the launcher's position, as well as high mobility of the system by placing all components on a towed chassis.
As early as 1978, the S-300P anti-aircraft missile system entered service, along with the 5V55K solid-fuel radio-command SAM, which was capable of hitting targets at a distance of up to 47 km.
5P85-1 S-300PT launcher on a towed chassis
The first production version of the S-300PT incorporated many innovations: the missile was solid-fueled, requiring no ongoing maintenance and being safer than its liquid-fueled predecessors. The 5V55K SAM was launched vertically from a transport launcher, propelling the missile to a height of 20 meters by a propellant catapult. The booster motor then ignited, and the SAM was directed toward its target.
Composition of the anti-aircraft missile division of the S-300PT/PS complex
1) 5N63S target illumination and guidance radar
5N63S target illumination and guidance radar
The S-300PS self-propelled multifunctional illumination and guidance radar (RPN) for the battalion consists of a trailer-mounted cabin (transported by a tractor). Its antenna, a phased electronically scanned array (PESA), folds onto the roof of the equipment shelter. Its key feature was the key limitation at low altitudes—the radio horizon. Typical geometric limits: a target at 50-100 meters in altitude is detected at approximately 42-67 km with an antenna post altitude of 10 meters. The primary functions of this radar are target tracking, illumination, and guidance of S-300PS SAMs; target selection, information filtering, and jamming and firing results assessment. To increase the target detection range, the 5N66 NVO was introduced.
2) Low-altitude detector (LAD) 5N66/5N66M
Low-altitude detector 5N66M
Its primary mission is to search for and acquire targets at low altitudes and provide target designation to the S-300P(T/S) battalion's radar. It operates in the following frequency ranges: X-band (IEEE), I-band (NATO); type - FMCW. Instrumented range: up to ~120 km. The actual range against low-flying targets is limited by the radio horizon and installation altitude. Later, a modernized version, the 5N66M, was developed (NPO Utes, headed by L. Shulman); it was routinely installed on the 40V6(M) together with the S-300PS battalion.
3) S-300PT 5N64S command post 3-coordinate surveillance radar
5N64S detection radar
This radar performs long-range surveillance and air situation monitoring (3D), and provides target designation to the 5K56 combat control post. The information is distributed via the command post between up to six 5Zh15 air defense missile systems in the battalion (combat fire assets). It functions as a "combat control radar" (for the detection unit/combat control point in the early S-300PT/PS family of systems). It features a passive phased array (PA), electronic scanning in altitude, mechanical rotation in azimuth; simultaneous search in two 90° sectors (for the 64N6/5N64 family). Its distinctive feature was integration with the air defense automated control systems: Senezh-M, Baikal, Baikal-1 via interface cabins (5F20/5F24, 53L6).
The detection range was: for the early 5N64/64N6, various sources indicate up to ~300 km for large targets.
4) Three-coordinate combat mode radar ST-68U
ST-68U mobile three-coordinate decimeter-range radar
It was a mobile three-dimensional combat-mode radar for detecting and tracking targets at low and medium altitudes in challenging jamming conditions. It was used as a surveillance/reconnaissance radar for air defense units and could operate in conjunction with the S-300P family of air defense missile systems. Antenna/scanning: cylindrical-parabolic reflector, electronic scanning in elevation (multiple beams/"zones"), mechanical rotation in azimuth. Rotation speeds were 6 or 12 rpm. It could detect targets at a range of up to 150 km at an altitude of 20,000 m. Deployment by a trained crew took an hour, sometimes longer (depending on the situation).
The use of the ST-68U radar in the S-300 system complements the RPN 30N6, increasing the target detection range and depth and reducing the speed required for the 30N6 to automatically track targets, allowing for faster SAM launches against detected targets. Another significant advantage of using this radar is increased survivability and resistance to electronic countermeasures due to the spacing of its radar posts.
5) Up to 12 5P85-1 self-propelled launchers: a semitrailer with four missile containers (TPK) in a 2x2 unit; a hydraulic drive lifts the unit vertically at the firing position. In the traveling position, the semitrailer is pulled by a tractor (usually a KrAZ-255/260); in position, the launcher is leveled using jacks. The 5P85-1A was produced in several variants, which differed in the design of the frame, hydraulics, and drive rack layout. The unit consists of 4 TPKs on a semitrailer - in the traveling position and in the vertical position when on the firing position (museum examples 5P85-1/5P851A).
Hardware container for the S-300PT 5P85-1/1A air defense missile system
This complex undoubtedly surpassed all existing air defense systems of the time, including the famous S-75 air defense system, and determined the vector of development of air defense systems around the world for decades.
However, despite all its advantages, the system also had significant drawbacks: despite its high level of automation, the 5V55K missile's firing range did not exceed 47 km, which was even shorter than that of the S-75. To rectify this, the 5V55KD SAM was adopted in the early 1980s, increasing its firing range to 75 km. The warhead is detonated by a proximity radar fuse upon entering the kill zone. This allowed it to effectively engage large, slow-moving targets such as the B-52 or KS-135, as well as E-3 AWACS aircraft. The low engagement range, even for such a large target, was due to the fact that the longer the range, the greater the missile's guidance error. Consequently, increasing the distance from the guidance station made it impossible to accurately determine the missile's position relative to the target. To address this shortcoming, the 5V55R SAM, with radio-command guidance via the missile, was adopted in 1982: the radio signal reflected from the target is received by the missile and then transmitted via a repeater to the 5N63S RPN guidance station. On the ground, the RPN computer, with precise data on both the target and the missile, calculates the optimal intercept trajectory. Course corrections prior to target engagement are transmitted to the missile via radio commands; detonation is triggered by a proximity fuse/command.
Compared to a pure radio command, the 5V55R missile offers significantly higher accuracy at long ranges, as its calculations rely on the signal received by the missile, which is "closest" to the target. The main drawback of this guidance system was the need for a stable, two-way "missile-to-RPN" channel. The 5V55R SAM's launch range was initially limited to 75 km, but after the introduction of the modernized 5V55RM variant in 1984, this increased to 90 km.
In the mid-80s, the modernization of the S-300PT system continued, reaching the S-300PT-1A version. This system featured improved guidance and processing equipment, which generally improved the combat performance of the PT-1A system compared to the earlier PT. The S-300PT-1A remained in service with the Russian army until 2014, after which it was replaced by the newer S-300PS/PM. This system is currently in service with the armies of Armenia, Kazakhstan, and Belarus.
Further development of the S-300PT complex and its modifications
In 1983, a new modification of the system, the S-300PS, entered service. Its main difference from the previous version was the mounting of the launchers on a mobile, self-propelled MAZ-543M chassis, which reduced deployment time to five minutes. This type of air defense system became the most widely used in the USSR, and later in post-Soviet Russia. This modification of the air defense system continues to be in service in the Russian Federation (approximately 300 S-300PS launchers) and other post-Soviet countries.
The S-300PS battalion includes three batteries, each consisting of three SPUs on the MAZ-543M chassis, as well as an F1S RPN cabin and a combat control module for the system. Compared to the S-300PT, this modification: the trailer-mounted 5N63 RPN has been replaced with a self-propelled 5N63S/30N6 on the MAZ-543M chassis, which has reduced the time it takes to put this radar into combat position (up to 5 minutes under ideal conditions) and maintained simultaneous guidance of up to 12 SAMs on 6 targets; the 5N64K RA was replaced with the 5N64S, a self-propelled road train on the MAZ-7410 chassis, increasing autonomy and mobility and reducing deployment time; The 5N66M low-altitude detector on the 40V6 mast was replaced with the 76N6 with 40V6M masts, which increased the range of operations against ground targets to 90 km at an altitude of up to 500 m and up to 120 km at an altitude of 1000 m or more, and the algorithms for suppressing interference and false signals were also improved.
NVO 5N66M (left) and RPN 30N6 (right) on 40V6M towers
A 5T99 loading vehicle was used to reload the system's launchers and load the transport and launch vehicles at the battalion and warehouses. It was a KrAZ 6x6 flatbed truck with a hydraulic boom-manipulator on a frame with outrigger jacks at the rear and sides for stabilization during crane operation.
Loading vehicle 5T99
The PBU 5K56S combat control post was capable of tracking up to 100 different targets and determining their nationality, interacting with other air defense missile systems, and issuing target designations to engage the most dangerous targets in conditions of strong interference.
RџR'RЈ 5Рљ56РЎ
Production of the S-300PT/PS systems proceeded rapidly in the USSR. As early as the mid-1980s, a decision was made that more modern systems would replace the outdated first-generation S-75 systems. As a result, before the collapse of the USSR, the armed forces received approximately 150 air defense missile systems or over 1600 launchers of various S-300PT/PT-1/PT-1A/PS systems. Currently, the S-300PS are still in service with the Russian Aerospace Forces (several dozen divisions with approximately 200 launchers). After the collapse of the USSR, Ukraine also received approximately 43 S-300PT/PT-1A/PS air defense missile systems, of which at least 30-35 were considered conditionally combat-ready and were on combat duty in limited numbers. Since the hardware of these systems is significantly outdated, and the service life extension for the 5V55R/RM SAMs ended 15 years ago, these systems are gradually being decommissioned and transferred to CSTO allies after minor modernization. For example, two S-300PS systems were transferred to Armenia after major repairs, and four battalions were also delivered to Belarus in 2005. As payment for the barter agreement, Belarus supplied chassis for the RS-12M1 Topol-M strategic missile systems. Later, in 2016, deliveries of four more S-300PS battalions began. In addition to Belarus and Armenia, Kazakhstan also received this SAM system: in 2015, Russia transferred five S-300PS anti-aircraft battalions, along with 170 5V55RM SAMs for them.
S-300PM/PM1/PM2 air defense missile systems and their export modifications
In 1993, after protracted testing, the S-300PM system was accepted into service. This resulted in an increased level of automation, which positively impacted its combat capabilities. In this modification of the air defense system, the developers were able to increase the target detection range by using the new 64N6E radar: special sector scanning modes for tracking ballistic targets were added, the detection range of aerodynamic targets increased, jamming immunity was enhanced, and a dual-sided, hydraulically elevating PFAR antenna and standard "sectorization" of modes were added.
64N6E long-range early warning radar
Perhaps the most significant change to the S-300PM system is the new 48N6 SAM: its range against aerodynamic targets has increased from 75 km to 150 km, while the minimum engagement altitude has been reduced from 25 m for the 5V55RM to 10 m for the 48N6. The warhead has been increased to 143 kg. This makes it possible to intercept highly maneuverable ballistic missiles (TBM/OTBM) at a range of up to 40 km, while the SAM's targeting accuracy has been increased and its flight speed has been increased to 2100 m/s.
After the S-300PM system entered service in 1993, it remained on the production line for a short time due to the crisis in the country. Production ceased in 1994, after which the company began producing the export version, the S-300PMU-1, for export to Vietnam (12 launchers), Greece (12 launchers), and China (64 launchers). The Russian Armed Forces received five regimental sets (10-15 air defense missile systems), which were deployed around Moscow. By 2014, all battalions of this modification had been upgraded to the S-300PM1 standard.
S-300PM2 – further improvement of air defense systems
In 1997, the S-300PM2 system and its export counterpart, the S-300PMU-2, were accepted into service. 15 divisions (120 launchers) were delivered to China, 4 divisions (32 launchers) to Algeria, 4 divisions (32 launchers) to Iran, 3 divisions (24 launchers) to Azerbaijan, and 3 divisions (24 launchers) to Syria. These systems only began to enter service with the Russian Armed Forces in 2012.
The S-300PM2 modification now has the capability to simultaneously engage 36 targets, guiding 72 SAMs (two missiles per target). Furthermore, the 64N6E radar was upgraded to the E2 level, which allowed for increased resistance to EW, improve performance against small/low-observable targets, refine the ballistic missile modes, and generally improve processing performance—all while maintaining the same class range. A new three-dimensional, all-altitude detector, the 96L6E, was also introduced. It is designed to improve autonomous all-round visibility and target designation. While taking over some of the 64N6E(E2) radar detection functions, it detects and identifies targets, and provides target designation for detected aerial objects. The 96L6E detection range is approximately 5-300 km (against aerodynamic targets); coverage: 360°; the lower zone is updated approximately every 6 s, the upper zone—approximately 12 s; sector and low-altitude modes are available.
R'SЃРµРІС ‹СЃРѕС‚РЅС‹ Р№ РѕР ± РЅР ° ружитель 96Р› 6Р •
A significant advantage of the system was the use of the 48N6E2 SAM with an increased flight range of up to 190-200 km versus 150 for the 48N6E/E2, the range of hitting ballistic targets at range was also improved - more than 40 km, the warhead increased from 143 kg to 180 kg.
The division can use additional radars: a low-altitude detector 76N6 and a mobile three-coordinate radar of the ST-68UM 36D6 family, which allows for the detection of all kinds of air targets by several radars, including low-observable cruise missiles flying at low altitudes.
At the beginning of 2016, the first regimental set (3 anti-aircraft missile systems and a command post) took up combat duty in the Central region of the country, and already in the middle of 2017, the second regiment armed with the S-300PM2 air defense missile system took up combat duty in the Krasnoyarsk Territory.
Combat use of the S-300PT/PT-1A/PS air defense missile system and its modifications
1) Following the downing of a Russian Su-24 tactical bomber and the further escalation of tensions between Syria and Turkey in the northern regions, a decision was made to supply three battalions (8 launchers each) of the S-300PMU2 system to the Syrian Arab Republic, and the S-300/400 system was deployed at the Khmeimim Air Base. The S-300 system performed virtually unnoticed during the continuous Israeli airstrikes against Iranian targets in Syria. Only in May 2022 was there information about an attempt to intercept Israeli F-16s using 13 S-300PMU2 SAMs; however, no aircraft were damaged or shot down as a result of this attack.
2) The first combat use of the S-300 system in almost 50 years of its operation was the second war in Nagorno-Karabakh. Before the war, Armenia had obsolete S-300PT/PS systems in its arsenal, consisting of approximately 5 battalions (12 launchers each), delivered from Russia after repairs and minor modernization. Azerbaijan also had the most modern modification of the S-300PMU2 systems - 3 battalions (8 SPUs each) and 200 48N6E2 SAMs. Armenia made limited use of the S-300PT/PS in combat, which allowed it to shoot down numerous Azerbaijani dronesHowever, the systems also suffered significant damage from UAV strikes: five 5P85 launchers, two 5N63S RPNs, and four 36D6 radars were confirmed destroyed. The use of the S-300 family of systems prevented either the Azerbaijani or Armenian sides from actively using aircraft, further confirming the high effectiveness of these systems.
3) The Russian-Ukrainian war was the largest use of air defense systems in history. history their existence. The S-300 complex was not spared from this share. Ukraine and Russia were the largest operators of these systems at the beginning of 2022: Russia had approximately 570 launchers and about 7-8 thousand SAMs for them, including 5V55KD/R/RM and 48N6E/E2, while Ukraine had about 280 launchers of the earlier S-300PT/PT-1A/PS complexes and about 3000 5V55K/KD/R/RM SAMs. Already in the first days, Ukrainian S-300 systems suffered significant losses (approximately 80-100 5P85S launchers, 16 5N63S RPNs, and approximately 16 36D6 radars were lost). However, a significant number managed to leave their bases in time and survived, allowing them to close their airspace to Russian air strikes and prevent Russian Aerospace Forces from achieving air superiority. During the war, the S-300PT/PS systems were quite effective against modern cruise missiles (with a kill probability of approximately 30%), but were unable to shoot down high-speed aerodynamic and ballistic targets, resulting in heavy losses from Iskander OTRK strikes.
In all conflicts, the S-300PT and its modifications have demonstrated high effectiveness against various aerial targets, including aircraft, helicopters, UAVs, and cruise missiles, provided they have a sensor network, maneuverability, and concealment. However, against modern SEAD/EW systems and massive UAV/cruiser swarms, single battalions quickly lose their effectiveness; today, only echeloned groups with the assistance of other air defense systems offer real results.
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