Mil Wed-2
| Mil Wed-2 | |
|---|---|
.jpg) A Mil Mi-2 of the Polish Air Force |
|
| Type: | Multipurpose helicopter |
| Design country: | |
| Manufacturer: | |
| First flight: |
September 22, 1961 |
| Commissioning: |
1966 |
| Production time: |
1966 to 1998 |
| Number of pieces: |
5497 |
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The Mil Mi-2 ( Russian Миль Ми-2 , NATO code : Hoplite ) is a twin-engine Soviet multipurpose helicopter . It was built in at least 24 variants and around 5000 copies until 1998 and some of it is still in service today.
history
The development team of the OKB -329 headed by Michail Mil was commissioned on May 30, 1960 to develop this helicopter in initially different versions. In January 1961 the first prototype was ready and extensive soil tests were carried out. As early as September 1961, the OKB presented this type to the public for the first time as the successor to the Mil Mi-1 under the designation W-2 . The first flight took place on September 22, 1961. In contrast to its predecessor, the model had a more spacious cabin, as the engines and the main gearbox were located above the fuselage. While the Mi-1 was still powered by a piston engine, its successor had two Isotow GTD-350 gas turbines . During testing, the model was able to set two world records on a 100 km route on May 14, 1963 and June 20, 1965. The crews B. Anopow and T. Russijan flew the route at an average speed of 253.82 km / h and 269.38 km / h, the latter being a women's record.
After the prototype had been tested, it was decided to hand over the series production of the Mi-2 to the WSK plant (Wytwórnia Sprzetu Komunikacyjnego, Plant for Transportation) in Świdnik / Poland, which had started negotiations on license production at the end of 1962. A corresponding contract was signed between the Soviet Union and Poland in early 1964. In Świdnik, the first aircraft still consisting of supplied parts of Soviet production flew on August 26, 1965. The first pure helicopter named as PZL Mi-2 flew for the first time on November 4, 1965. The Isotow GTD-350 turbines belonging to the model were also made built under license in the Rzeszów WSK . In 1966 series production began in the WSK Świdnik, and in 1968 the introduction into the inventory of the Polish Air Force began.
From April 1972 to August 1985, the air forces / air defense and later the army aviation forces of the NVA received 48 Mi-2. The border troops of the GDR used Mi-2 within helicopter squadron 16 for border surveillance and security tasks until 1990. Such a machine with original markings can be seen in the helicopter museum in Bückeburg .
The Mi-2M , equipped with an improved GTD-350P, flew for the first time on July 1, 1974. It also had an enlarged fuselage designed for ten people and two sliding doors on both sides. The development work for this began in 1968. A total of six prototypes were created, which were tested until 1977. Since the expected flight performance was not achieved, this program was discontinued in the same year. Series production of the Mi-2 ran until around 1986 and comprised around 5450 pieces.
The Mi-2 was used in several Warsaw Pact states (GDR, ČSSR, Poland, Hungary, Bulgaria) and in states with Soviet influence (Yugoslavia, Iraq, Libya, etc. ), except in the USSR . The main customers were the Soviet Aeroflot , the paramilitary organization DOSAAF and the Soviet air force .
The Polish aircraft manufacturer PZL Świdnik offers a modernized version of the Mil Mi-2 called PZL Kania .
technical description
The fuselage of the Mi-2 is in full metal - semi-monocoque construction with planking from duralumin manufactured. The tank is in the middle of the cabin. The tail rotor arm has stabilizing fins attached to the side and an emergency spur. The rigid nose wheel landing gear is pneumatically suspended and can be supplemented with snow runners in winter.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 2 |
| Passengers | 6-8 |
| length | 11.94 m (with rotor 17.42 m) |
| height | 3.75 (with tail rotor 4.53 m) |
| Rotor circle diameter | 14.50 m (tail rotor 2.70 m) |
| Rotor area | 165.00 m² (tail rotor 5.70 m²) |
| Empty mass | 2365 kg |
| Takeoff mass | normal 3550 kg maximum 3700 kg |
| drive | two Klimow GTD-350 shaft turbines |
| Starting power | 400 HP (294 kW) each |
| Tank capacity | Main tank 600 l additional tank 238 l (2 pieces possible) |
| Top speed | 210 km / h at an altitude of 500 m |
| Marching speed | 190 km / h at a height of 500 m |
| Climb performance | 4.5 m / s |
| Summit height | 4000 m |
| Range | 160 km (without additional tank) |
Armament
Some variants such as the Mi-2US could be provided with weapon mounts.
Fixed armament on the port side
- 1 × 23-mm automatic cannon Nudelman-Richter Nazi 23KM with 80 rounds of ammunition
- 2 × 7.62 mm PKT machine guns on swivel mounts in the cabin
Armament up to 400 kg at four external external load stations
Air-to-air guided missile
- 2 × GAD double starters each with 2 × 9K32 Strela-2 M - infrared-guided for short distances
Air-to-surface guided missile
- 4 × wire-guided anti-tank missiles 9M14M Malyutka
Unguided air-to-surface missiles
- 2 × MARS-2 rocket tube launch containers for 16 unguided air-to-ground missiles S-5 each ; Caliber 57 mm
Unguided free-fall bombs
- 2 × FAB-100 (100 kg free fall bomb )
- 6 × color marker bombs OMAB 25-12D
External container
- 4 × 7.62 mm PKT machine guns in containers with 200 rounds of ammunition each
- 2 × disposable additional fuel tanks with 238 liters of kerosene
See also
literature
- Thomas Girke, Georg Bader: The planes of the National People's Army - Wed-2. (DHS series), Merkur, Rinteln 1998, ISSN 1435-831X .
Web links
Individual evidence
- ↑ a b c http://avia.cybernet.name/hel/model/mi-2.html accessed on December 27, 2012
- ↑ Mi-2 of the border troops of the GDR in the helicopter museum in Bückeburg
