30N6 Flap Lid Russian Ground-Based Target Acquisition and Tracking Radar

The Flap Lid is a Russian ground-based target acquisition and tracking radar associated with the SA-10 Grumble ** surface-to-air missile (SAM) system. It uses a phased-array antenna and a track-via-missile (TVM) tracking and guidance system similar to that of the MIM-104 Patriot /MPQ-53 system. Flap Lid can reportedly track six targets and guide two missiles per target simultaneously. The launch rate is claimed to be three missiles per second. Target elevation coverage may have been increased from 50 degrees to a maximum of 75 degrees to provide a measure of ballistic missile defense capa bility. The SA-10B system takes approximately five minutes to deploy. The trailer-mounted Flap Lid A radar is associated with the SA-10A, while the truck-mounted (MAZ-7910) Flap Lid B is associated with the SA-10B (S-300P ) system. Although the radar has few changes, its mounting on a truck allows for rapid deployment and disengagement. Both options provide 360-degree coverage in azimuth. The S-400 reportedly uses a new tracking and missile guidance radar that is based on the Flap Lid sensor, but with a larger antenna assembly along with a secondary array. --- Additional Data (TRADOC ODIN WEG) --- Frequency: 8–12 GHz (X, NATO Band J) Antenna Dimensions: 3.8 x 2.5 m Associated Weapon Systems: С-300ПМ (S-300PM): 48Н6 / 48N6 Role: Fire Control/Engagement Remarks: S-300PM engagement radar --- From Radartutorial.eu (https://www.radartutorial.eu/19.kartei/06.missile/karte005.en.html) --- 30N6E “Flap Lid” is an I/J band multi-function phased-array trailer-mounted engagement radar with digital beam steering for use with the SA-10 “Grumble” theatre defence missile. The operators and command staff for the SA-10 are positioned in a cabin to the rear of the radar cabin. Flap Lid, like the AN/MPQ-53 , uses a 10,000 element transmission type of space feeded phased-array , with a complex monopulse horn feed into the rear plane of the antenna, using a microwave lens. The Flap Lid’s antenna stows flat on the roof of the radar cabin, which was initially deployed on a trailer towed by a Ural-357, KrAZ-255 or KrAZ-260 6x6 tractor. The whole radar cabin is mounted on a turntable and used to slew the phased array to cover a 60 or 100 degree sector of interest. There are two versions of this radar, Flap Lid A and Flap Lid B. Flap Lid A is associated with the deployable SA-10A variant of the “Grumble” missile and takes the form of a trailer-mounted, semi-mobile equipment. The Flap Lid A antenna is mounted on a tower to increase the radar’s effectiveness against low-flying targets. Flap Lid B, which is truck mounted, supports the fully mobile SA-10B version of the missile which appears to be designated as the S-300 air defence system (Russian designator: 90Ж6). Within the SA-10 system, Flap Lid is used in conjunction with the Big Bird surveillance and Clam Shell target identification/location radars. Flap Lid provides for the simultaneous tracking of six targets with each of these being engaged by two missiles. It is stated that the radar is highly resistant to electronic countermeasures and has a high-resolution capability. Missile guidance is similar to the US Patriot system in that it is by track-via-missile type. Flap Lid has a target elevation coverage reported to be from 0 to 50º, but is believed to have been modified to provide cover up to 75º for ballistic missile defence.