Mil Wed-4

from Wikipedia, the free encyclopedia
Mil Wed-4
Mi-4 1.jpg
Mi-4 of the NVA in the Air Force Museum Berlin-Gatow
Type: Medium transport helicopter
Design country:

Soviet Union 1923Soviet Union Soviet Union

Manufacturer:

Mil

First flight:

May 1952

Commissioning:

1953

Production time:

  • 1953 to 1969 (USSR)
  • 1958 to 1980 (China)
Number of pieces:

  • approx. 3500 in the USSR
  • 545 in China

The Mil Mi-4 ( Russian Миль Ми-4 , NATO code name : Hound ) is a medium-sized transport helicopter developed and manufactured by Mil in the USSR .

history

In September 1951, the Soviet government decided to push the construction of helicopters. The result of this was the Jakowlew Jak-24 and the Mil Mi-4. The construction of the Mi-4 began as early as October 1951, while Mil's design was certainly based on the American Sikorsky S-55 , but without copying it. The Mi-4 is an independent construction. The first flight of the prototype, which was still equipped with a 735.5 kW (1000 PS) Schwezow ASch-62-IR star engine, took place in May 1952. For the series versions, however, a 1694 hp Schwezow ASch 82W radial engine was used, with which the Mi-4 outperformed the S-55.

The Mi-4 was shown to the public for the first time at the air show in Tuschino in 1953. At that time it received the NATO Code Type 36 , but with the introduction of the code names in 1955 it was referred to as the "Hound". The Mi-4 was manufactured in a plant in Kazan .

variants

Production amounted to around 3500 Mi-4s built in the Soviet Union from 1953 to 1969 plus a license production of 545 Z-5s built in China from 1958/59 to 1980.

  • Mi-4A "Hound-A" : storm troop transport helicopter
  • Mi-4AW "Hound-A" : armed assault troop transport helicopter
  • Mi-4BT "Hound-B" : Minesweeping variant with skis
  • Mi-4GF "Hound-A" : demilitarized civilian passenger version
  • Mi-4L (Ljukes) : civil VIP variant with six seats
  • Mi-4M "Hound-C" : armed attack helicopter with MG in chin tower, also known as Mi-4WM.
  • Mi-4ME "Hound-C" : armed export variant of the Mi-4M attack helicopter
  • Mi-4MA "Hound-B" : ASW (anti-submarine) variant with a cup-shaped radome under the bow and a lowerable MAD under the rear fuselage.
  • Mi-4MR "Hound-C" : improved attack helicopter
  • Mi-4MT "Hound-B" : Submarine hunter variant of the Mi-4M, equipped with a torpedo
  • Mi-4MU "Hound-C" : improved attack helicopter
  • Mi-4P "Hound-A" : civilian passenger version for up to 16 passengers, rectangular windows.
  • Mi-4PL "Hound-B" : submarine hunter variant
  • Mi-4PS "Hound-A" : Search and rescue helicopter variant
  • Mi-4SchCh "Hound-A" : civilian polar variant of the Mi-4FW as a cargo helicopter of the Soviet Arctic and Antarctic research stations
  • Mi-4S (saloon) : civil VIP variant
  • Mi-4SCh "Hound-A" : agricultural spray helicopter for agriculture with a chemical container in the cabin
  • Mi-4T "Hound-A" : Basic troop transport variant with round windows
  • Mi-4WL "Hound-A" : Fire fighting variant
  • Mi-4WM "Hound-B" : submarine hunter variant WM-12
  • Mi-4WP "Hound-A" : civil passenger version
  • Harbin Z-5 : Chinese license replica

Countries of operation

Mi-4 of Interflug during assembly work on Karl-Marx-Allee in East Berlin (Photo: 1964)
Mil Mi-4 with UB-16 launch canisters for unguided missiles in the Kbely Aviation Museum

Armament

Fixed pipe armament in the bow

  • 1 × 12.7 mm machine gun Afanasyev A-12.7 (TBK-481M), limited mobility in a NUW-1 mount installed in the nose tip with 200 rounds of ammunition

Loads of weapons of 1000 kg at four to six external load stations

Anti-tank guided missile

Unguided air-to-surface missiles

  • 4–6 × UB-16-57U missile launch containers (16 unguided air-to-surface missiles S-5 , caliber 57 mm)

Free falling bombs

  • 4 × FAB-250 (250 kg free fall bomb )
  • 6 × FAB-100 (100 kg free fall bomb)

Technical specifications

Mil-4
Harbin Z-5, s / n 8919, in the Datang Shan Aviation Museum in northern Beijing
Three-sided view
Parameter Data
Type Transport helicopter
Weight empty 5400 kg
normal 7150 kg
maximum 7600 kg (Mi-4 P 7800 kg)
Hull length 16.79 m
Main rotor diameter 21.00 m
Length with rotors running 25.02 m
height 4.4 m
Fuel supply 1000 l
speed Max. 185 km / h
Cruising speed 160 km / h
Range Max. 425 km
Range with max. Payload 200 km
Transfer range 410 km
Service ceiling 4000-4200 m
Hover altitude Max. 1700 m
Climbing time to 3600 m 16 min
Engine a 14-cylinder twin radial engine Schwezow ASch-82 W
Starting power 1250 kW (1694 hp)
Payload up to 14 soldiers or 1200 kg cargo
crew 2
Armament MG stand NUW-1 with a 12.7 mm MG TKB 481 (A-12.7) and 200 rounds

Web links

Commons : Mil Mi-4  - collection of pictures, videos and audio files