The S-300V/S-300VM/VMK/Antey-2500 is the world's only truly mobile Anti Ballistic Missile system, and later variants are claimed to be capable of intercepting 4.5 km/sec reentry speed targets. The large size of the Grill Pan phased array and TELAR command link and illuminator antennas is evident. The system provides the capability to engage very low RCS aircraft at ranges in excess of 100 nautical miles. Below: 9M82 Giant round (images ©
Miroslav Gyűrösi).
9S32 Grill Pan S-300V engagement radar deployed on an Article 830 series tracked vehicle (NIEMI image).
Background
The highly mobile Antey S-300V and S-300VM remain one of the most lethal area defence SAM systems ever developed, firing hypersonic missiles designed to engage aircraft, cruise missiles and ballistic missiles.
Designed from the outset for high mobility and effectiveness against targets at all altitudes, the S-300V would have been a key player in any late Cold War conflict. This weapon was developed to provide not only long range area defence, but also to engage and destroy ISR assets like the E-3 AWACS, E-8 JSTARS and U-2, and tactical jammers like the EF-111A Raven and EA-6B Prowler.
There have been repeated reports since the beginning of the decade in the Indian media that a buy of this system was imminent, but to date none has materialised. Numerous reports have also surfaced that the PLA is operating either an S-300V or S-300VM variant under the designation of HQ-18, although no hard evidence to support this claim has emerged as yet.
From an Australian perspective the possible deployment of S-300V family of missiles in Asia is of major concern. Rapidly deployable, high survivable, and highly lethal, these weapons are especially difficult to counter and require significant capabilities to robustly defeat. The US Air Force currently envisages the F-22A Raptor as the primary weapon used to defeat these capable systems.
It is important to note that no F/A-18 variant, nor the Joint Strike Fighter, were designed to penetrate the coverage of the S-300V/VM systems. The survivability of these aircraft will not be significantly better than that of legacy combat aircraft.
[paste:font size="4"]
S-300V/VM/SA-12/23 System Design and Integration
All principal components of the S-300V system are carried on the “Item 830” series tracked vehicle, with gross weights between 44 and 47 tonnes per vehicle - the S-300V is not a lightweight system - and has similar offroad mobility to a medium tank.
The S-300V system comprises no less than eight unique system vehicles, the 9S457 mobile command post, the 9S15 Bill Board acquisition radar, the 9S19 High Screen ABM early warning radar, the 9S32 Grill Pan engagement radar, the 9A82 and 9A83 TELARs (Transporter Erector Launcher and Radar), and the 9A84 and 9A85 TEL/Transloader vehicles.
The paired acquisition radars are each optimised for their specific roles, with a limited overlap in capabilities, as the 9S15 Bill Board has some ABM early warning capability, and the 9S19 High Screen can acquire and track airborne targets. The 9S32 Grill Pan is more narrowly optimised as an engagement radar for missile guidance.
The 9A82 and 9A83 TELARs each include high power CW illuminators for missile guidance and command uplinks, and also provide these guidance functions for the 9A84 and 9A85 TEL/Transloaders, which operate as slave TELs in the battery.
Typical battery integration involves datalink tie-ins with the divisional level 9S52/9S52M Polyana DM series command posts, and the use of the Pori P1 series radar data fusion centre. Often S-300V / SA-12 batteries are supplemented with a 1L13-3 Nebo SV VHF-band 2D early warning and acquisition radar.
The S-300VM / SA-23 retains the basic battery structure of the earlier variant, replacing individual components with revised designs.
S-300VM / SA-23 battery composition and integration (Antey).
Engagement and Fire Control Radars, with a detailed technical analysis of the design under David Barton's 9S32/32M Grill Pan Fire Control Radar.
While the S-300VM sees incremental improvements in most components, the 9M32M/ME engagement radar underwent a significant redesign, especially in the antenna. Brochure material produced by the manufacturer shows a design which can be best described as a hybrid of components from the Grill Pan and the High Screen. The larger aperture High Screen array is employed, combined with revised IFF array and interferometer / sidelobe blanker antenna array below the primary aperture. The high and low angle circular polarised monopulse space feeds are retained but repositioned for the different array geometry. The new enlarged aperture will exhibit almost twice the gain of the Grill Pan, much better angular resolution especially for targets near the zenith, and improved heightfinding performance.
The 9S32M/ME will have a much higher peak power rating compared to the 9S32 Grill Pan since the additional range of the 9M82M cannot be accommodated by the ~3 dB power-aperture improvement produced by the larger antenna alone. A more detailed analysis will not be possible until good quality imagery of prototypes or production systems becomes available.
[paste:font size="4"]9A82 Giant and 9A83 Gladiator TELARs.
[paste:font size="4"]Search and Acquisition Radars, with a detailed technical analysis of the design under David Barton's 9S15/9S15M/MT Obzor 3 / Bill Board Three-Dimensional Surveillance Radar.
[paste:font size="4"]Search and Acquisition Radars.
All 9M82 and 9M83 images © Miroslav Gyűrösi.
[paste:font size="4"]Novator 9M82 / SA-12B Giant and 9M83 / SA-12A Gladiator Missiles
The two stage 9M83 “Type I Missile” / SA-12A Gladiator and 9M82 “Type II Missile” / SA-12B Giant are the guided missiles used by the S-300V / SA-12 system. The missiles are largely common in design, the principal distinctions being different first stage boosters, different control surface arrangements, and numerous detail differences.
The conical aerodynamic design and general configuration of both S-300V missiles is modelled on the earlier US Martin Marietta Sprint ABM which was similar in size to the 9M83 / SA-12A Gladiator but had performance closer to the 9M82 / SA-12B Giant. Both Soviet missiles, intended to kill both aerial and ballistic targets, outrange the more specialised Sprint ABM.
The smaller 9M83 Gladiator SAM/ATBM is intended to engage aerial targets at all altitudes, including cruise missiles, and smaller TBMs. The much larger 9M82 Giant has higher kinematic performance and is intended to kill IRBMs, SRAM class supersonic missiles, but also standoff jamming aircraft at long ranges.
Both weapons employ two solid propellant stages, with thrust vector control of the first stage (10,225 lb / 4,636 kg mass in the Giant and ~5,000 lb / 2275 kg in the Gladiator) and aerodynamic control of the 2,800 lb (1,200 kg) second stage, using four servo driven fins, and four fixed stabilisers. The guidance and control packages, and much of the weapon airframes are almost identical, the principal distinction being the bigger booster stage of the Giant and its larger stabilisers8,9.
A cold start ejector is used to vertically expel the missile from the 9Ya238/9Ya240 (9M82/9M83) launch tube, using a spherical gas generator in the base of the tube, the 9D128 first stage burns until exhausted, upon which the missile jettisons the spent first stage and transitions to its 9D126 midcourse sustainer powerplant.
Immediately post-launch, once the missile has cleared the launch tube, the 9D124 “declination powerplant” is engaged. This is a short burn duration thruster system, which employs several exhaust ports on the lower rim of the first stage nozzle. The purpose of this system is to effect a post-launch pitching manoeuvre to the intended target heading, and optimal elevation (pitch/yaw) angle for initiating the first stage motor burn. Once the missile has been pointed in the desired direction, the first stage motor is started and burns for 3.5 to 6.2 seconds in the 9M82, or 4.11 to 6.4 seconds in the 9M83.
Flight control during the first stage burn is effected by four internal nozzle ports for gas injection Thrust Vector Control (TVC), in a manner similar to the Martin-Marietta Sprint ABM and ARPA HIBEX demonstrator. While the US designs injected liquid freon into the exhaust flow, the Novator design draws high pressure exhaust gas upstream of the nozzle and injects it into the exhaust stream at the point where the flow is described as supercritical.
The first stage has a truncated conical shape, with most of the upper portion occupied by the annular conically shaped bonded solid propellant motor, which exhausts into a conventional bell nozzle, with TVC ports located close to the combustion chamber exist aperture. An external cable duct is used to carry electrical power and control signals to the two TVC control systems in the first stage.
Once the first stage it expended it is jettisoned by pyrotechnic charge, and the kill vehicle 9D126 bonded solid propellant sustainer is ignited. The sustainer occupies the portion of the fuselage which can be identified by the four symmetrical external cable ducts, which connect the guidance systems in the nose section with the aft section containing control surface actuators and the electrical powerplant. The bell shaped sustainer nozzle in the tail is fed by a central cylindrical exhaust duct which passes through the aft fuselage section. Burn duration is cited at 11.2 - 17.2 seconds for both the 9M82 and 9M83.
Observation of 9M82 Giant launch footage confirms the stated stage burn durations, and also indicates the use of an energy management profile, where the missile boosts to an apogee, and post apogee flies a pulldown/pullup manoeuvre before transitioning into a shallow dive as it closes with the the intended target.
Both missile types employ four actuator driven cruciform tail control surfaces, and four fixed stabilising fins, smaller than the control surfaces in the 9M83, and equally sized in the 9M82.
Power for the actuators and guidance avionics is produced by the 9B153 gas turbine electrical powerplant, which drives two AC busses at 1,000 Hz, and two DC busses. High pressure gas is produced by an starting gas generator cartridge and a sustainer gas generator cartridge.
During midcourse flight the missile employs inertial navigation. This is performed using the onboard 9B619 digital computer, and a 9B627 inertial unit.
Two midcourse guidance modes are employed:
- Inertial Guidance: in this mode target position and velocities are continuously updated by a datalink channel and the autopilot flies the missile using a P-nav algorithm, with vehicle position and velocities derived from the onboard inertial system. ;
- Command Inertial Method (KIM): in this mode missile and target position and velocities are uploaded via a datalink channel.
In the former mode it transitions to its semi-active homing seeker during the final 10 seconds of flight, in the latter 3 seconds before impact - a technique preferred for heavy jamming environments. The midcourse guidance system attempts to fly the most energy efficient trajectory to maximise range.
The datalink channel antennas are embedded in the cruciform tail surfaces.
The endgame homing algorithm has not been disclosed. The 9E49/DB-100N semi-active homing seeker will generate target angles and angle rates. It is likely that a P-nav algorithm with lead bias is employed. The antenna is cued to the target pitch/yaw angles during endgame closure by the onboard computer.
Russian sources claim the dual plane monopulse two-channel X-band semi-active seeker can lock on to a 0.05 m2 RCS target from 16.2 nautical miles. A two channel radio proximity fuse is used to initiate the 9N127 330 lb (150 kg) class “smart” warhead which has a controllable fragmentation pattern to maximise effect. The missile is also equipped with a self destruct system.
As the missile approaches the target, it will perform a rolling manoeuvre to align the directional warhead with the plane of the target. The proximity fused warhead produces a high velocity stream of fragments in a narrow cone normal to the axis of the missile. 9M82 Giant missile velocity entering the endgame is ~3.5 M.
The engagement envelope of the baseline Gladiator is between 80 ft AGL to 80 kft, and ranges of 3.2 to 40 nautical miles, the Giant between 3,200 ft AGL to 100 kft, and ranges of 7 to 54 nautical miles. The system can launch the missiles at 1.5 second intervals, and a battalion with four batteries can engage 24 targets concurrently, with 2 missiles per target, and has a complement of between 96 and 192 missiles available for launch on TELAR/TELs. A TELAR can arm a missile for launch in 15 seconds, with a 40 second time to prepare a TELAR for an engagement, and 5 minute deploy and stow times - a genuine “hide, shoot and scoot” capability.
The cited single shot kill probabilities for the Gladiator are 50% to 65% against TBMs and 70% to 90% against aircraft, for the Giant 40% to 60% against IRBMs and 50% to 70% against the AGM-69 SRAM - ballistic missiles with re-entry velocities of up to 3 km/s can be engaged. Russian sources credit the missiles with endgame capability against 7-8G manoeuvring targets. The later 9M82M and 9M83M are credited with a 30G endgame capability.
The Soviets were terrified of the EF-111A fleet operated by Tactical Air Command and equipped the S-300V system with a facility for passive targeting of support jammers. The 9S15, 9S19 and 9S32 have receiver channels for sidelobe jamming cancellation and these are used to produce very accurate bearings to the airborne jammer, this bearing information is then used to develop angular tracks. The angular tracks are then processed by the 9S457 command post to estimate range, and the 9S32 then develops an estimated track for the target jammer. A Giant missile is then launched and steered by command link until it acquires the target.