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The AH-1Z Viper is one of the most powerful, advanced and capable helicopters flying today
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The Bell AH-1Z Viper is a modern version of the first ever attack helicopter, the AH-1 Cobra. It is also called Zulu Cobra in reference to its variant letter. Since its introduction in the mid 1960s the original Cobra has been constantly improved and upgraded. The latest AH-1Z Viper is a result of H-1 helicopter upgrade program for the US Marine Corps. It was launched by the US Government in 1996 and has been won the Bell helicopter company. It is worth noting that the Viper was developed alongside the UH-1Y Venom under the same program.
The AH-1Z Viper is a direct derivative of the AH-1W SuperCobra. It is one of the most powerful, capable and advanced helicopter, flying today. The AH-1Z made its first flight back in 2000. It was introduced to the US Marine Corps in 2010. Full scale production commenced in 2012. Marines plan to receive a total of 189 Vipers until 2019. These include 131 AH-1W upgraded into AH-1Z and 58 newly built AH-1Z helicopters.
 Upgrades included implementation of state-of-the-art weapons and digital technology to respond to modern demands for contemporary warfare. The Viper features outstanding flying and combat capabilities.
The AH-1Z has essential changes in propulsion. It is powered by two General Electric T700-GE-401C turboshaft engines and has uprated transmission. One of the main external differenced from the AH-1W is a composite 4-bladed main rotor, instead of the previous 2-bladed rotor. It is worth noting that a 2-bladed rotor was distinctive feature of all Bell helicopter models. Due to these changes flying characteristics improved a lot.
Despite all improvements and upgrades appearance of the AH-1Z remains the same. Pilot is seated at the rear and co-pilot/gunner at the front. Layout of two integrated digital cockpits is identical and all systems are duplicated.
 This helicopter uses off-the-shelf electronic systems. It can operate in day, night, or adverse weather conditions. It has night vision twinned with infrared and new target search and acquisition software. It permits Viper to find and engage targets at long range. It can be fitted with Longbow fire control radar, mounted on wingtip station. Also there is automatic flight control station.
Armament of the Viper is very flexible. It is enhanced by helmet-mounted sight and display system. The AH-1Z carries about 2 t of various weapons on stub-wings. Typically it carries AGM-114A/B/C Hellfire anti-tank missiles (up to 16) and pods with 70-mm unguided rockets. The Viper can be also fitted with AGM-114F Hellfire anti-ship missiles, free-fall bombs, including the Mk.77 incendiary bombs. It can also carry two fire-and-forget AIM-9 Sidewinder supersonic air-to-air missiles with infrared target detection. These a mounted on wing tip stations. Also there is a 20-mm three-barrel cannon.
A number of improvements were made to survivability and crashworthiness of the helicopter. It is fitted with infrared suppression system which covers engine exhausts, laser and radar warning systems, and radar jammer. It also has smart countermeasures dispenser with missile warning device.
 Latest airframe technologies were implemented, such as crashworthy seats, energy absorbing landing gear, self-sealing fuel tanks and fuel systems and fuel vapor inerting systems.
Fuselage of the helicopter and external components were coated to avoid corrosion during prolonged service at sea. These helicopters typically operate from amphibious assault ships.
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