Kamov Ka-27 Helix (Wallpaper 2) aircraft photo gallery | AirSkyBuster

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Kamov Ka-27 Helix (Wallpaper 2)

Friday, December 16, 2011

Kamov Ka-27 Helix Helicopter Wallpaper 2
image dimensions : 1200 x 800
Kamov Ka-27 Helix (Wallpaper 2)
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The Kamov Ka-27 was developed to replace the Ka-25 in Soviet naval service, and is now the Russian navy's standard ship based ASW helicopter. The Kamov design bureau began work on a successor for its Ka-25 in 1967, when Sergei Mikheyev became chief designer following Nikolai Kamov's death. The Soviet navy required a replacement for its Ka-25s which could not operate dunking sonar at night or in poor weather. The result was the Ka-27 (NATO name 'Helix'), an all new helicopter of similar overall dimensions to the Ka-25 and featuring Kamov's signature counter rotating coaxial main rotors. The Ka-27 flew for the first time in 1973. The Ka-27's similar overall dimensions to the Ka-25 means it requires only the same amount of deck space to operate from as the older helicopter. However the Ka-27 features more powerful Isotov turboshafts which turn redesigned, although similar diameter rotors, giving greater performance and allowing higher weights. The basic Ka-27PL anti submarine warfare helicopter features an under nose mounted search radar, dipping sonar and disposable sonobuoys. The Ka-27PL usually operates in 'hunter killer' teams, with one aircraft tracking the target sub, the other dropping depth charges. The Ka-28 is a downgraded export version of the Ka-27PL, while the Ka27PS is a naval SAR helicopter with some ASW equipment deleted, an external winch and fuselage side mounted fuel tanks. The Ka-29 assault transport derivative is described separately. The helicopter is fitted with a coaxial main rotor with folding blades. The composite blades are fitted with an electric thermal de-icing system. The aerodynamic and design parameters allow the helicopters to be stowed in small shipborne hangars. The landing gear provides for safe take-off and landing on rocking ship decks. Corrosion-resistant materials have been used in the construction to ensure normal operation in active sea environments. The helicopter is fitted with ballonet flotation devices for emergency landing on water. The Ka-27 helicopter is powered by two TV3-117KM turboshaft engines. The Ka-28, a modification of the Ka-27, is powered by two more powerful TV3-117VK turboshaft engines, with increased fuel and take-off weight. The helicopter is equipped with a radar system for navigation and to detect surfaced submarines and responder beacons. The VGS-3 dipping sonar detects submarines, determines the coordinates of the submarine and transfers the data in semi-automatic mode to data transmission equipment. The mission computer carries out automatic control, stabilisation and guidance of the helicopter to the mission areas to attack targets. The helicopter also has a magnetic anomaly detector (MAD) and an airborne receiver to detect and guide the helicopter towards sonar buoy radio transmissions. The helicopter is armed with one homing torpedo, one torpedo rocket, ten PLAB 250-120 bombs and two OMAB bombs. It is fitted with a heated torpedo bay, ensuring the reliability of weapons in low-temperature weather conditions. The Ka-29 is the naval combat and transport helicopter version of the Ka-27. The mission of the helicopter is to land navy and infantry units with armament from combatant ships, ensure fire support for seaborne assault troops, ferry personnel and cargo from ship bases, and supply vessels to combatant ships. The structure of the Ka-29 is very similar to the Ka-27 and Ka-28. The helicopter is powered by two TV3-117V turboshaft engines. The Ka-32 is the civil version of the Ka-27, and while none have been sold to military operators, some Ka-32s in Aeroflot markings have been observed operating off Russian naval vessels.


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