|A Russian Navy Ka-27PS|
|First flight||24 December 1973|
|Primary users||Soviet Navy
|Developed from||Kamov Ka-25|
The Kamov Ka-27 (NATO reporting name 'Helix') is a military helicopter developed for the Soviet Navy, and currently in service in various countries including Russia, Ukraine, Vietnam, South Korea, People's Republic of China, Republic of China and India. Variants include the Ka-29 assault transport, the Ka-28 downgraded export version, and the Ka-32 for civilian use.
Design and development 
The helicopter was developed for ferrying and anti-submarine warfare. Design work began in 1970 and the first prototype flew in 1973. It was intended to replace the decade-old Kamov Ka-25, and is similar in appearance to its predecessor due to the requirements of fitting in the same hangar space. Like other Kamov military helicopters it has a co-axial rotor, removing the need for a tail rotor.
Operational history 
The Ka-32A11BC multipurpose helicopters have been successfully operated in Portugal for more than five years. In 2006, KAMOV JSC won the tender for the supply of the Ka-32A11BC firefighting helicopters, which were to replace the Aérospatiale SA-330 Puma which have very high operating costs.
The Ka-32A11BC features high power-to weight ratio and ease of handling, owing to a coaxial-rotor design. The absence of tail rotor and the tail boom reduced to the main rotors diameter facilitate maneuvering near obstacles and make it possible to assure exceptional accuracy hovering in heavy smoke and dust conditions. The Ka-32A11BC equipped with the suspended fire-fighting system Bambi Bucket of capacity up to 5 tons. The service life has been extended up to 32 000 flight hours.
- First prototype.
- Anti-submarine warfare prototype.
- (Helix-A) Anti-submarine warfare helicopter.
- (Helix-D) Search and rescue helicopter, ASW equipment removed and winch fitted.
- Armed version of the Ka-27PS.
- (Helix-A) Export version of the Ka-27Pl.
- (Helix-B) Assault transport helicopter, with accommodation for two pilots and 16 troops.
- A radar picket variant of the Ka-31 early warning helicopter first displayed in 2008. RLD designation: radiolokatsyonnoga dozora. Two units delivered to Russian MoD by 2010.
- Civil transport helicopter. Initial production version.
- Fire fighting helicopter, equipped with a helicopter bucket.
- Police version, equipped with two searchlights and a loudspeaker.
- Special search and rescue, salvage and evacuation version.
- Armed version developed from the Ka-27PS.
- Canadian and European-certified version with Klimov TV3-117MA engines.
- Swiss-registered and approved version.
- Little-known custom version.
- Projected development with 1839kW TV3-117VMA-SB3 engines. Probably replaced by the Ka-32-10 project.
- (Helix-C) Maritime utility transport, search and rescue helicopter, fitted with an undernose radar.
- (Helix-C) Utility transport helicopter, with accommodation for Two crew and 16 passengers.
- Flying crane helicopter, fitted with a retractable gondola for a second pilot.
Military operators 
Civilian operators 
- Akagi Helicopter
Specifications (Ka-27) 
- Crew: 1-3, plus 2-3 specialists (Ka-27)
- Capacity: 4,000 kg (8,818 lb) payload (Ka-32), or up to 16 troops (Ka-29).
- Length: 11.3 m (37 ft 1 in)
- Height: 5.5 m (18 ft 1 in)
- Empty weight: 6,500 kg (14,330 lb)
- Gross weight: 11,000 kg (24,251 lb)
- Max takeoff weight: 12,000 kg (26,455 lb)
- Powerplant: 2 × Isotov TV3-117V turboshaft engines, 1,660 kW (2,230 hp) each
- Main rotor diameter: 2× 15.8 m (51 ft 10 in)
- Main rotor area: 392.2 m2 (4,222 sq ft) 3-bladed contra-rotating rotors
- Maximum speed: 270 km/h (168 mph; 146 kn)
- Cruising speed: 205 km/h (127 mph; 111 kn)
- Range: 980 km (609 mi; 529 nmi)
- Service ceiling: 5,000 m (16,404 ft)
- 1 × mobile forward firing GShG-7.62 minigun with 1800 rounds,
- 1 × 30 mm 2A42 cannon with 250 rounds (flexible semi-rigid mount, optional/removable with ammunition carried in cabin)
- four external hardpoints for bombs, rockets, gunpods, munitions dispensers, special four round missile launchers for the 9K114 Shturm
See also 
- Related development
- Aircraft of comparable role, configuration and era
- Related lists
- Taylor 1996, pp.316-317
- Nealy, Sylvia. Russian Navy conducts flight training aboard US ship Rotorhub, 27 July 2010. Retrieved: 4 August 2010.
- Jackson, Paul (Ed) (2010). Jane's All the World's Aircraft 2010 - 2011. Surry: IHS Global. p. 503. ISBN 13-978-0-7106-29166 Check
- "World Air Forces 2013". Flightglobal Insight. 2013. Retrieved 5 April 2013.
- "World Air Forces 1997 pg. 71". flightglobal.com. Retrieved 5-April-2013.
- "Helicargo Services". helicargo.com.br. Retrieved 5-April-2013.
- "Aircraft fleet". akagi-heli.co.jp. Retrieved 5-April-2013.
- "Heli Swiss Fleet". heliswissinternational.ch. Retrieved 5-April-2013.
- "Kamov Ka-27 Helix". www.helis.com. Retrieved 9 May 2012.
- "Kamov KA-27 Helix". www.combataircraft.com. Retrieved 9 May 2012.
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