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ZVD-7247 1/72 Kamov Ka-27PS Helix D Russian Search and Rescue Helicopter model kit

Zvezda ZVD-7247 1/72 Kamov Ka-27PS Helix D Russian  Search and Rescue Helicopter model kit
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ZVD-7247 1/72 Kamov Ka-27PS Helix D Russian Search and Rescue Helicopter model kit

In 1969, the Kamov design bureau started working on a successor to the KA-25 "Hormone" naval multipurpose helicopter. The new design was designated the KA-27 - which received the NATO reporting name "Helix" and made its maiden flight in December 1974, while testing onboard naval vessels began in 1981. The KA-27 builds on the design of the KA-25 and use the same coaxial contra-rotating rotor configuration. New more powerful Klimov(Isotov) TV3-117V engines, a larger blade area and new rotor blade design made it possible for the rotors to handle double the power output while retaining the diameter and number of rotor blades(3 per rotor).
The KA-27 can be operated from warships using the hangars, elevators and flight decks designed for the KA-25 - this is possible because the KA-27 has similar overall dimensions to the KA-25 but with a larger 3 door(2 cockpit- and 1 cargo door) fuselage made of composite materials and advanced alloys. The lower part is sealed for buoyancy - and boxes of extra flotation equipment can be fitted. The result is a stable, versatile and powerful helicopter with all weather- and heavy lift capabilities and a flight control system incorporating auto hover with auto transition and altitude hold.
The KA-27 has been produced in varies versions for different purposes - the initial model was the KA-27PL "Helix-A" replacing the KA-25BSH as the primary airborne ASW platform onboard Russian navy vessels - all modern Russian warships carry one or more KA-27-ASW helicopters: the Kuznetsov-class (18 + 2 KA-27LD and 4 KA-27PS), Kiev-class(19), Ushakov-class(3), Moskva-class(1), Udaloy-class(2), Sovremenny-class(1), Neustrashimyy-class(1).
The KA-27PL carries a wide range of ASW and ESM equipment: dipping sonar, sonobouys and magnetic anomaly detectors (MAD) together with a surface search radar. The Ka-27 can be armed with torpedoes, bombs, mines and rockets. It can detect a submarine at a range of 30 km by radar, 7.3 km by sonar beacon, at 400 meters by sonobouy and magnetometer - and engage it to a max depth of 500 m.
A search and rescue (SAR) version - the KA-27PS "Helix D" - has also been developed. It has a surface search radar, a hydraulic rescue winch with a 300-kg capacity fitted above the cabin door, downward-pointing floodlights, external fuel tanks and flotation gear. It is capable of search and rescue operations in high seas. The flight and navigation systems and the powerful radar provide this SAR helicopter with a true "night/day" "all weather" capability and allows automatic flight along a prescribed route. The cabin has room for 14 seated passangers or 4 patients on stretchers. The "Kuznetsov" aircraft carrying cruiser carries four KA-27PS helicopters.
A further development of the KA-27 is the KA-29RLD which is a new ship borne AEW platform. Requirement for an early warning version of the KA-27 was specified in 1985. Two prototypes were build(no "031" and "032") based on the KA-27 and designated KA-29RLD("Radio Lokacionnowo Dozora") - later redesignated "KA-31". First flight was performed in 1987 afterwhich the two prototypes underwent flight testing onboard the Kuznetsov. The KA-31 officially entered service with the VMF in 1995.
The KA-29RLD It is fitted with the E-801 "Oko" planar solid-state phased array. The 5.75m wide radar panel(6m2 area) is retracted flat to the cabin underside when inactive.
The E-801 radar is integrated with a highly automated radio-electronic suite - when activated, the radar panel is extended and hangs from the underside of the fuselage with the landing gear retracted. The panel is mechanically rotated to provide a 360 degree scan with a 10 second interval.
The radio-electronic suite detects targets, identifies them and transmits combat situation data to the ship-based command posts. When in operational mode, all operations are performed automatically and target information is displayed on the operators tactical display.
The radio-electronic suite is furthermore linked to the avionics and can automatically fly the helicopter along a preset route in any weather condition and finally return it to a hover 25 m above the takeoff location.
The E-801 radar enables the KA-31 to detect surface ships as well as aerial targets, such as aircraft and low flying cruise missiles, with a 360 degree coverage. It can track 20 targets simultaneously up to a range of 250 km for small surface targets and 100 - 150 km for fighter sized aerial targets.
The "Kuznetsov" carries 2 KA-29RLD AEW helicopters.