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Kamov Ka-27

Naval anti-submarine warfare helicopter

Kamov Ka-27 Helix helicopter

The Kamov Ka-27 shipborne ASW and utility helicopter is in service with Russian Navy

 
 
Kamov Ka-27PL 'Helix-A'
Country of origin Soviet Union
Entered service 1982
Crew 3 men
Dimensions and weight
Length 11.27 m
Main rotor diameter 15.9 m
Height 5.45 m
Weight (empty) 6.1 t
Weight (maximum take off) 12.6 t
Engines and performance
Engines 2 x Klimov TV3-117V turboshaft engines
Engine power 2 x 2 190 hp
Maximum speed 250 km/h
Cruising speed 230 km/h
Service ceiling 5 km
Range 800 km
Payload
Maximum payload 5 t
Armament
Missiles Kh-35 anti-ship missiles
Torpedoes 4 x APR-2E homing torpedoes
Bombs 4 x groups of S3V guided anti-submarine bombs in place of torpedoes

 

   Development of the Ka-27 family began in 1969. The type made its first flight in 1973. The Ka-27 retains Kamov's well-proven contra-rotating co-axial rotor configuration and similar dimensions of the previous Ka-25. Kamov is the only company to have mass produced co-axial helicopters. With more than double the power of the Ka-25 Hormone, the Ka-27 is a considerably heavier helicopter with a larger fuselage, but nevertheless offers increased performance with much-improved avionics and more modern flight-control system.

   This helicopter has no tail rotor. Instead it uses two rotors spinning in opposite directions to give directional stability during flight. Furthermore the Ka-27 uses much shorter rotor blades. All of these features allowed to reduce footprint on ships. The Ka-27 is extremely stable and easy to fly, and automatic height hold, automatic transition to and from the hover and autohover are possible in all weather conditions.

   The first production variant was the Ka-27PL (Western designation Helix-A). It is a basic Anti-Submarine Warfare (ASW) version, which entered service in 1982. The Ka-27PL's fuselage is sealed over its lower portions for buoyancy, while extra floatation equipment can be fitted in boxes on the lower part of the centre fuselage. Ka-27PL has all the usual ASW and other equipment including dipping sonar and sonobuoys as well as Osminog (octopus) search radar. It can carry homing torpedoes, anti-ship missiles, or anti-submarine bombs. These helicopters typically operate in pairs.

   The main Search and Rescue (SAR) and planetguard Ka-27 variant is the radar-equipped Ka-27PS (Helix-D). This usually carries external fuel tanks and flotation gear, and has a hydraulically-operated, 300-kg capacity rescue winch. It is intended to rescue survivors from shipwrecks. This helicopter is also used for utility operations.

   The Ka-27 series helicopters are operated by a crew of 3, including pilot, technical coordinator, ASW systems operator (Ka-27PL), or winch operator (Ka-27PS).

   A total of 296 of the Ka-27 helicopters and its variants were built. Production has been stopped, but may be resumed, if requires. Currently Russian Navy operates about 90 Ka-27 helicopters of all variants. It is also used by the Ukrainian Navy, and a number of other countries, including Algeria, China, India, both North and South Koreas, Vietnam, and some other countries. This machine has served aboard a variety of warships.

 

Variants

 

   Ka-27PL (Helix-A) is a baseline anti-submarine warfare helicopter.

   Ka-27PS (Helix-D) is a search and rescue helicopter.

   Ka-27M is a recent improved version. It is being tested and evaluated by the Russian Navy. This helicopter has got new radar and some other improvements.

   Ka-28 (Helix-A) is an export version of the Ka-27PL ordered by China, India, Vietnam and Yugoslavia. This version has a revised avionics suite.

   Ka-29 (Helix-B) is a naval assault transport helicopter. This helicopter is intended especially for the support of Russian Navy's amphibious operations and featuring a substantially changed airframe. The type entered service in 1985. About 59 of these helicopters were produced. These are in service with Russia and Ukraine.

   Ka-31 is an airborne early warning helicopter, based on the basic Ka-29. Its main mission is a long-range detection of airborne and naval threats.

   Ka-32 (Helix-C) is a simplified civilian version. It is used in Russia and has been exported to a number of countries. It is even used by some Western countries.

   Ka-32K is a civilian flying crane.

   Ka-32S is a specialized version, designed to operate from icebreakers. It can be used for ice patrolling, search and rescue, oilrig support, and other tasks. This version is fitted with a radar.

   Ka-32T is a civilian transport helicopter. It lacks radar and has simplified avionics. It can carry passengers or freight. It has a payload capacity of 4 000 kg internally or 5 000 kg externally.

 

 
Kamov Ka-27PL Helix-A helicopter

Kamov Ka-27PL Helix-A helicopter

Kamov Ka-27PL Helix-A helicopters

Kamov Ka-27PS Helix-D helicopter

Kamov Ka-27PS Helix-D helicopter

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