Mil Mi-1
The Mil Mi -1 (Russian Миль Ми -1, NATO reporting name: Hare ) is a light -Soviet helicopter. He was the first developed in the design office of Mikhail Mil helicopters and also the first in a conventional design with main and tail rotor, which was built in the USSR in series.
Description
After Mikhail Mil 1947 was appointed head of its development group, he developed from the end of the GM-1 ( Gelikopter Milja, Mils helicopter ), whose construction was completed in August 1948. On September 20, 1948 test pilot Baikalow began flight testing. On 24 November the same year, the helicopter crashed due to a frozen oil line; the pilot was able to escape by parachute. It was built a second prototype, which, however, during the trial at the NII VVS by the effects of fatigue on March 7, 1949 also crashed, with Baikalow was killed. This was followed by a third test machine whose testing was from the summer of 1949 carried out by Tinjakow and this time successfully. In contrast to later versions of the original model still had blades in composite construction. After the test phase was No. 3, a preliminary series of 15 helicopters built in February 1950 at the factory for troop testing, now with the official designation Mi -1. Then the series production at the factory # 387 in Kazan began in Plant No. 168 in Rostov-on- Don and the factory # 47 in Orenburg. On July 8, 1951, the type was presented during the flyby Tuschinoer the first time. Overall, the three plants produced 990 Mi -1.
Based on an agreement with Poland, the Soviet Union ended in 1955, the series production and awarded the license rights to the WSK factory in Świdnik. A year later there began the production for the time being with supplied from the USSR assemblies. 1957 was the first purely Polish SM-1/300, the Polish version of the Mi- 1T from the tape. The AI -26 engine was built as Lit- 3 licenses in the WSK factory Rzezów.
1960 appeared a modified further under the name Mi -1 Moskvich. She had a more extensive device configuration, and a sound- reduced room. This version, whose blades were made of all metal, has been declared to the standard version, which by and by the additional designation Moskvich ( Москвич, " Moscow's son " ) disappeared.
Poland developed in 1961 as a PZL SM-2 has become known development with extended hull and larger cabin for four passengers.
Production in Świdnik ran until 1965, nor brought forth several SM -1 variants, such as freight, medical, and agricultural helicopter and ended after 1,683 copies. The Soviet paramilitary mass organization DOSAAF put the Mi -1 en masse for a training of pilots and technicians. In the GDR, the Mi -1 served until 1973 both as a multi-purpose device with the air forces as well as to monitor the borders.
In 1961 the development of the Mil Mi -2.
Construction
The fuselage of the Mi- 1 consists of a planked with alloy steel pipe grid. The main and tail rotor were metal and had three blades. The simple frosted tricycle landing gear could not be retracted.