KA-27 / KA-29 Helix
First entering service with the Russian Navy in 1974, the Helix airframe is the basis for several models, each serving a dedicated maritime role.
The distinctive stacked co-axial rotor design of the Helix eliminates the need for a tail rotor, a design feature that allows for easy stowing in the cramped spaces found onboard ships.
Armed Helix Variants
The KA-27PL Helix-A is a dedicated anti-submarine helicopter. The Helix-A carries a radar under its chin for tracking surface contacts and can deploy a dipping sonar and active sonar bouys in order to detect enemy submarines. KH-35 anti-ship missiles can be carried for deailing with surface threats whilst sonar-homing torpedos can be dropped into the water to attack submerged submarines.
An assault-transport variant, the KA-29 Helix-B, boasts a new fuselage which can house 16 fully-armed troops and incorporates additonal armour and various hardpoints for mounting guns, rockets and guided-missiles. It is claimed that the stacked rotor design creates a more stable platform for air-to-ground weapons than single-rotor designs such as the MI-24 Hind.
Sensors mounted in the KA-29's chin include a low-light televison camera. forward-looking infra-red (FLIR) and a millimetre-wave radar that guides anti-tank missiles.
KA-29 Helix-B Specifications
The KA-27PL Helix A features a powerfull search radar dome in the chin.
The KA-27PL is Russia's primary anti-submarine warfare platform and operates from carriers and frigates throughout the fleet.
U.S. DOD photo by PH1 MARK THERIEN
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