Main Menu

Kamov Ka-27 / Ka-28

ka-27
Ka-27


The design process started in 1969, with the prototype first flown on 24 December 1973, replacing the Ka-25 Hormone ship-borne helicopter, the Ka-27 Helix entered service in 1980 and was first observed on the Soviet destroyer Udaloy in September 1981.

The Ka-27 retains the Hormone’s coaxial counter-rotating rotor arrangement for com-pactness, but features an enlarged fuselage, increased fuel, two 1,660kW (2,170 s.h.p.) Isotov TV3-117BK turbo-shafts, a redesigned tail, and all-weather avionics. Broadly based on the Ka-25, the Ka-27 features redesigned broader chord rotor blades, strengthened transmissions and undercarriage, and two tail fins.

At least 16 were observed on the former 'Kiev' class carrier/cruiser Novorossiysk 1983, during replacement of Ka-25s with Ka-27s.

Three versions of the Ka-27 were initially identified; Helix A, the ASW variant with under-nose search radar, dipping sonar, sonobuoys, and towed MAD; Helix B, an infantry assault version; and Helix C, a SAR helicopter with additional fuel tanks and rescue hoist.

Manufactured by KUMAPE, the Ka-27 came in four versions, the Ka-27, 28, 29, and 32. The Ka-27 is a naval helicopter, having two variants, the Ka-27PL which are used in pairs for anti-submarine use, and the Ka-27PS which is used for search and rescue. The Ka-28 is an (ASW) export version of the Ka-27PL. The Ka-29 and Ka-29TB are assault transport helicopters. The Ka-32T is a utility transport helicopter, and the 32S is a utility version for operating in adverse weather. The 32K is a flying crane version of the Ka-27.

Modern variants include the Ka-31 airborne early warning helicopter equipped with the E801M Oko (Eye) air and sea surveillance radar

A crew of three are pilot, tactical coordinator, and ASW systems operator and most versions have a ventral weapons bay for two torpedoes, four depth charges, or other stores.

Variants:

Ka-27PL Helix-A
Ka-27 for anti-submarine missions with extended cockpit with additional windows and three crew, enlarged belly weapons bay for four torpedoes and upgraded electronics suite. Russian navy Ka-27PLs carry Kh-35 anti-ship missiles. Normally operated in pairs, one tracking hostile submarine, other dropping depth charges.

Ka-28 Helix-A
Ka-27PL for export customers with 1,618kW / 2170shp TV3-117BK turboshafts and 3,680kg of fuel in 12 tanks. Ka-32 type broad cockpit door and bulged windows.

Ka-27PS Helix-D
ASR version of Ka-27, As Ka-27PL without weapons bay, rescue winch, external fuel tanks, searchlight and other rescue equipment.

Specifications:

Ka-27

Engine: 2 x Klimov TV3-117.
Instant pwr: 1642 kW.
Rotor dia: 15.9 m.
Fuselage length: 11.3 m.
Height: 5.4m
No. Blades: 2 x 3.
Disc Area: 199 sq.m
MTOW: 12,600 kg.
Payload: 4000 kg.
Max speed: 146 kt / 270km/h
Max cruise: 124 kts.
Cruising speed: 230km/h
HOGE: 12,131 ft.
Service ceiling: 19,672 ft / 4300m
Range: 850 km.
Endurance: 4.5h
Crew: 2-3
Pax: 16.

KA-27PS
Engine: 2 x Klimov TV3-117.
Instant pwr: 1642 kW.
Rotor dia: 15.9 m.
MTOW: 11,000 kg.
Max speed: 146 kts.
Max cruise: 124 kts.
Max range (max pax): 750 km.
HOGE: 12,131 ft.
Service ceiling: 19,672 ft.
Crew: 1.
Pax: 12.

ka-27

Ka-27

 

 

 


Copyright © 2017 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.