Kamow Ka-25

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Kamow Ka-25
Kamow Ka-25K "Hormones"
Kamow Ka-25K
Type: Multipurpose helicopter
Design country:

Soviet Union 1955Soviet Union Soviet Union

Manufacturer:

Kamov

First flight:

1961

Production time:

1966 to 1973

Number of pieces:

460

The Kamow Ka-25 ( Russian Камов Ка-25 , NATO code name "Hormone" ) was a naval helicopter developed by the Soviet coaxial rotor pioneer Nikolai Ilyich Kamow .

history

In the early 1960s, the Soviet Navy announced the need for new ship-based helicopters for the reconnaissance and combat of submarines .

The OKB Kamow then designed the prototype Kamow Ka-20 (NATO code name "Harp" ) which, like all previous helicopters in this design office, was noticeable for its coaxial rotors . Two three-bladed main rotors rotating in opposite directions rotate on one axis. This configuration eliminates the need for the tail rotor , and the airframe can be made more compact overall, which is an advantage given the usually limited space on ships.

The Ka-20 prototype was first seen in 1961 at the Tushino air parade . It went into production at the end of 1966 as the Ka-25 in the aircraft factory No. 99 in Ulan-Ude . Around 460 units had been built up to 1973, around 250 of which were anti-submarine variants.

Versions

  • Ka-25BSch (NATO code name "Hormone-A" ): ASW helicopter was equipped with (NATO code name "Short Horn" ) search radar , sonar buoys and a towed magnetic anomaly detector. Various torpedoes were used as armament , and there was also the theoretical possibility of dropping nuclear depth charges .
Ka-25PL in a museum in Moscow
  • Ka-25Z (NATO code name "Hormone-B" ): Apart from a "Uspech-2A" radar (Успех-2A) and a "Kobalt-2" (Кобальт-2) radio data link, this version had no other armament, and should serve as an advanced observation post to target ship-based long-range cruise missiles such as SS-N-3B, SS-N-12, SS-N-19 and SS-N-22.
  • Ka-25PS (NATO code name "Hormone-C" ): Purely transport and SAR helicopter and therefore also unarmed.
  • Ka-25K : Civilian crane version with bug gondola for a second pilot who controls the loading / unloading of external loads and a cabin (3.95 × 3.76 × 1.25) for up to twelve passengers. Single copy, was shown in 1967 at the Aerosalon in Le Bourget.

commitment

A Ka-25 on the flight deck of the cruiser Frunze , 1987

Soviet Union / Russia : The largest operators were the Soviet naval aviators , where the Ka-25 versions were used as airborne combat, SAR, transport and liaison helicopters. A large number of the ASW helicopter Ka-25BSch have been stationed on the following ships since the mid-1960s: flight deck cruiser " Moskwa " (18), flight deck cruiser "Leningrad" (18), flight deck cruiser " Kiev ", aircraft carrier "Minsk", flight deck cruiser " Novorossiysk ", Flight deck cruiser" Baku ", cruiser" Kresta "class (1 each), cruiser" Kara "class (1 each).

In addition, the Ka-25 was also used from land-based naval bases. It was later replaced by the Ka-29 / 32 on the ships of the Soviet Navy .

The Ka-25s were also exported to Bulgaria , India , Yugoslavia , Syria and Vietnam .

Technical specifications

Scheme of the coaxial rotors
Parameter Data
Rotor diameter each 15.74 m
length 9.75 m
height 5.37 m
Empty mass 4765 kg
Takeoff mass 12,000 kg
payload Max. 2500 kg
Top speed 220 km / h
Cruising speed 195 km / h
Service ceiling 3500 m
Range 450 km
Passengers Max. 12
crew 2
Engines two Gluschenko GTD-3F helicopter turbines
power 660 kW (900 hp)

Armament

Internal weapon bay

Gun loading up to 1100 kg weapons in the internal weapon bay in the fuselage floor

Torpedoes

  • 2 × AT-1 / AT-1M (570 kg torpedo with a diameter of 450 mm)

Unguided depth charges

  • 4 × PLAB-250-120- water bombs
  • 8 × PLAB-50-64 depth charges
  • 48 × PLAB-MK depth charges (7.5 kg suspended in a dispenser box in the shaft)

At external load stations

Gun loading up to 200 kg weapons on a double rack on the left rear side

Unguided bombs

  • 2 × OMAB 25-12D marker bombs
  • 2 × OMAB-25-18N marker bombs

Web links

Commons : Kamow Ka-25  - Collection of pictures, videos and audio files

Individual evidence

  1. ↑ FliegerRevue November 2011, p. 61, collection series - Kamow Ka-25