(Mil) Mi-4 "Hound" @·AIRCRAFTUBE

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Mil Mi-4

The Mil Mi-4 (USAF/DoD reporting name "Type 36", NATO reporting name "Hound"). was a Soviet transport helicopter that served in both military and civilian roles.

Design and development

The Mi-4 was designed in response to the American H-19 Chickasaw and the deployment of U.S. helicopters during the Korean War. While the Mi-4 superficially resembles the H-19 Chickasaw, it is a larger helicopter and is able to lift more weight. The first model entered service in 1952, and replaced the Mi-1. The helicopter was first displayed to the outside world in 1952 at the Soviet Aviation Day in Tushino.

One Mi-4 was built with a jettisonable rotor. It served as an experimental vehicle for future pilot's means of safety and ejection designs.

Operational history

The Mi-4 transport helicopter laid the beginning of the Soviet Army Aviation, it was widely used both in the armed forces and in the national economy and for several decades remained the main type of helicopter in the inventory of the Soviet Armed Forces and of the Civil Air Fleet. The Mi-4 went out of service with the development of the Mi-8. It is not used by the Russian Air Force anymore, though it remained in service in some countries as a utility helicopter or as a military transport a while longer. Albania was thought to be the final country using the helicopter and by 2005 all were out of service. The Mi-4 played a very important role in Bangladesh liberation war of 1971. The Mi-4 was the workhorse of the Indian Army at the time. A highly successful heli-borne operation, the Meghna Heli Bridge, using Mi-4s helped the Indian Army's 57 Mountain Division clear the Meghna River. The helilift of a battalion of Indian troops to the outskirts of Sylhet was the first heli-borne operation of the Indian army.

Much like the UH-1 Huey, after it was gradually phased out of military service, it was used in various domestic roles: search and rescue, firefighting, polar expeditioning, construction site cargo helicopter, commercial flights and many others.

Variants

  • V-12 : Prototype. Designation reused for the Mi-12.
  • Mi-4 (NATO – Hound-A) : Basic production version.
  • Mi-4A : Assault transport helicopter.
  • Mi-4AV : Armed versions based on the Mi-4A.
  • Mi-4GF : Factory designation for demilitarised Mi-4 for use in the Civil Air Fleet.
  • Mi-4L Lyukes : Six-seat VIP transport version, sometimes converted into an air ambulance helicopter.
  • Mi-4VL : Fire-fighting version of Mi-4L.
  • Mi-4M (NATO – Hound-C) : Armed close-support helicopter, fitted with a gun turret. Designation alternatively applied to the Mi-4VM, and also reused for ambulance variant for the Soviet Ministry of Health. Export designation Mi-4ME.
  • Mi-4MR : Upgraded version of Mi-4VM.
  • Mi-4P / Mi-4VP : Civil transport helicopter, with accommodation for between 8 and 11 passengers, plus eight stretchers and a medical attendant for air ambulance duties.
  • Mi-4PL (NATO – Hound-B) : Anti-submarine warfare helicopter.
  • Mi-4PS : SAR version.
  • Mi-4S Salon : VIP transport helicopter.
  • Mi-4Skh : Multi-role agricultural helicopter, with a large chemical container in the main cabin. Also used as a fire-fighting helicopter.
  • Mi-4T : Major military production version, equipped with a large diameter main rotor and bulged windows.
  • Mi-4VM (VM-12) : Anti-submarine warfare helicopter.
  • Mi-4BT : Minesweeper with floats.
  • Mi-4RI : Mi-4M equipped with the Rion experimental sonar.
  • Mi-4MT : Torpedo-carrying ASW attack (killer) aircraft derived from Mi-4M.
  • Mi-4MU : Attack helicopter.
  • Mi-4MO : Search helicopter with Oka sonar.
  • Mi-4MS : Search helicopter with Soora infra-red sensor.
  • Mi-4FV (Mi-4KV) : Photographic and guidance helicopter.
  • Mi-4Schch : "Polar version" of Mi-4FV for working at the Soviet Arctic and Antarctic research stations.
  • Mi-4SP : Special rescue modification.
  • Mi-4PG : Experimental version equipped with an external load sling system.
  • Mi-4SV : Mi-4 with improved heat insulation for working in the Far North.
  • Mi-4N "Filin" (Horned owl) : Experimental reconnaissance version intended for night-time use.
  • Mi-4KK (Mi-4VKP) : Mobile command post.
  • Mi-4KU (Mi-4VPU) : Mobile command post for controlling Air Force units.
  • Mi-4U : Target-designator version carrying the Oospekh (Success) system.
  • Mi-4GR : Mi-4 fitted with Grebeshok-3 (Haircomb-3) wide-range panoramic detection and relay radar.
  • Mi-4TARK : TV-equipped artillery reconnaissance and spotting helicopter.
  • Mi-4MK (Mi-4PP) : ECM version.
  • Mi-4UM : Radio-controlled target drone version.
  • Harbin Z-5 : Chinese military transport helicopter. Chinese production version.
  • Harbin Z-6 : Prototype turbine powered version of the Z-5, no production undertaken.
  • Xuanfeng : Chinese civil transport helicopter. Chinese production version.

Unnamed Variants

  • Mi-4 minelayer version produced by converting troop-carrier helicopters.
  • Mi-4 modified for transporting and laying gas pipelines.
  • Mi-4 with Panorama 360 cin camera system produced by conversion.
  • Mi-4 with the Pristavka (Add-on) radio equipment developed in 1957 for guidance of remote-controlled reconnaissance balloons.
  • Mi-4s used as testbeds: Apart from the above-mentioned versions, the Mi-4 and Mi-4A were widely used as testbeds of various kinds for testing subassemblies and systems of future aircraft, as well as equipment for other branches of industry.

Operators

  • Afghanistan : Afghan Air Force.
  • Albania : Albanian Air Force.
  • Algeria : Algerian Air Force.
  • Bangladesh : Bangladesh Air Force.
  • Bulgaria :
    • Bulgarian Air Force.
    • Bulgarian Navy.
  • Cambodia : Cambodian Air Force.
  • China : People's Liberation Army Air Force.
  • Cuba : Revolutionary Armed Forces.
  • Czechoslovakia : Czechoslovakian Air Force.
  • East Germany : East German Air Force.
  • Egypt : Egyptian Air Force.
  • Finland : Finnish Air Force.
  • Hungary : Hungarian Air Force.
  • India : Indian Air Force.
  • Indonesia : Indonesian Air Force.
  • Iraq : Iraqi Air Force.
  • Khmer Republic : Khmer National Air Force.
  • Mali : Mali Air Force.
  • Mongolia : Mongolian Air Force.
  • North Korea : North Korean Air Force.
  • Poland :
    • Polish Air Force.
    • Polish Navy.
  • Romania : Romanian Air Force.
  • Somalia : Somali Air Corps.
  • Soviet Union :
    • Aeroflot.
    • Soviet Air Force.
    • Soviet Navy.
  • Sudan : Sudanese Air Force.
  • Syria : Syrian Air Force.
  • Vietnam : Vietnam People's Air Force.
  • North Yemen : North Yemen Air Force .
  • Yugoslavia : Yugoslav Air Force.

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Mil Mi-4 of Wikipedia ( authors )

Specifications (Mi-4A)

  • Crew : One or two pilots.
  • Capacity : 16 troops or up to 1,600 kg (3,520 lb) of cargo.
  • Length : 16.80 m (55 ft 1.4 in).
  • Height : 4.40 m (14 ft 5 in).
  • Rotor diameter : 21 m (68 ft 11 in).
  • Disc area : 346.4 m² (3,727 ft²).
  • Disc loading : 41 kg/m² (8 lb/ft²).
  • Empty weight : 5,100 kg (11,220 lb).
  • Loaded weight : 7,150 kg (15,730 lb).
  • Max. takeoff weight : 7,550 kg (16,610 lb).
  • Maximum speed : 185 km/h (116 mph).
  • Range : 500 km (313 mi).
  • Service ceiling : 5,500 m (18,040 ft).
  • Power/mass : 0.21 kW/kg (0.13 hp/lb).
  • Powerplant : One Shvetsov ASh-82V radial engine.
  • Power : 1,250 kW (1,675 hp).

— — — = = — — —

This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Mil Mi-4 of Wikipedia ( authors )
Mil Mi-4 "Hound" : Your comments on this subject
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