Mil Wed-1
| Mil Wed-1 | |
|---|---|
|
|
| Type: | Light multipurpose helicopter |
| Design country: | |
| Manufacturer: | |
| First flight: |
September 20, 1948 |
| Commissioning: |
circa 1950 |
| Production time: |
1950-1965 |
| Number of pieces: |
2,673 without prototypes |
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The Mil Mi-1 ( Russian Миль Ми-1 , NATO code name : Hare ) is a light Soviet helicopter . It was the first helicopter developed in Michail Mil's design office and at the same time the first in a conventional design with main and tail rotor to be mass-produced in the USSR .
description
After Michail Mil was appointed head of his development group in 1947, he began developing the GM-1 (Gelikopter Milja, Mils Helikopter) from the end of the year , the construction of which was completed in August 1948. On September 20, 1948, test pilot Baikalow began flight testing. On November 24 of the same year, the helicopter crashed as a result of a frozen oil pipe; the pilot was able to save himself with the parachute. A second prototype was built, but it also crashed during testing on the NII WWS due to the consequences of material fatigue on March 7, 1949, with Baikalow being killed. A third test machine followed, the testing of which was carried out by Tinjakow from the summer of 1949 and this time was successfully completed. In contrast to later versions, the original model still had rotor blades in mixed construction. After the test phase, a pilot series of 15 helicopters was built for troop testing in Plant No. 3 in February 1950, now with the official designation Mi-1. Then series production began in Plant No. 387 in Kazan , Plant No. 168 in Rostov-on-Don and Plant No. 47 in Orenburg . On July 8, 1951, the type was presented to the public for the first time during the Tuschino Air Parade. The three plants produced a total of 990 Mi-1s.
Due to an agreement with Poland, the Soviet Union ended series production in 1955 and granted the license rights to the WSK plant in Świdnik . A year later, production began there, initially with assemblies supplied from the USSR. In 1957 the first purely Polish SM-1/300 , the Polish version of the Mi-1T , rolled off the production line. The AI-26 engine was built under license as LIT-3 at the WSK factory in Rzezów.
In 1960 a modified further development appeared under the name Mi-1 Moskvich . It had more extensive equipment and a noise-reduced cabin. This version, whose rotor blades were made of all-metal, was declared the standard version, which gradually the additional name Moskvich (Москвич, "Moscow's son") disappeared.
In 1961 Poland developed a further development known as the PZL SM-2 with an extended fuselage and a larger cabin for four passengers.
Production in Świdnik ran until 1965, produced several more SM-1 variants, for example as cargo, medical and agricultural helicopters, and ended after 1,683 copies. The Soviet paramilitary mass organization DOSAAF used the Mi-1 en masse to train pilots and technicians. One of these DOSAAF machines in the original gold paintwork can be viewed in the Bückeburg helicopter museum.
In the GDR , the Mi-1 served both as a multi-purpose device for the air force and to monitor the borders until 1973.
In 1961 the further development Mil Mi-2 appeared .
construction
The fuselage of the Mi-1 consists of a tubular steel grille covered with light metal. The main and tail rotor were made of metal and each had three rotor blades. The single-tire nose wheel landing gear could not be retracted.
Technical specifications
| Parameter | Standard version SM-1 | School version Mi-1MU | Medical version Mi-1M |
|---|---|---|---|
| crew | 1 | 2 | 1 |
| Passengers | 2 | - | 3 |
| Body length (overall length) |
12.10 (16.95 m) |
12.08 (16.97 m) |
12.08 m (17.50 m) |
| height | 3.30 m | ||
| Rotor circle diameter |
14.30 m | 14.34 m | 14.50 m |
| Tail rotor circle diameter |
2.50 m | ||
| Empty mass | 1798 kg | 1785 kg | 1919 kg |
| Takeoff mass | 2265 kg | 2210 kg | 2414 kg |
| drive | a 7-cylinder radial engine AI-26W with 422 kW (570 PS) takeoff power | ||
| Top speed | 170 km / h | 185 km / h | 195 km / h |
| Marching speed | 130 km / h | 145 km / h | 150 km / h |
| Climbing time to 1000 m |
4.5 min | 4.2 min | 5 min |
| practical summit height | 3000 m | ||
| Range | 380 km | ? | 300 km |
| Flight duration | 188 min | 195 min | 180 min |
See also
Web links
Individual evidence
- ↑ Nikolai Jakubowitsch: Mil Mi-1 - Small speedster. In: Aviation Classics. No. 3, 2012, p. 33.
- ^ Karl-Heinz Eyermann , Wolfgang Sellenthin: The air parades of the USSR. Central Board of the Society for German-Soviet Friendship, 1967, p. 37.
- ^ Mi-1 of the DOSAAF in the helicopter museum in Bückeburg