Yak-22 / Yak—100
The helicopter designation Yak—100 was noted in the West in 1958 under a picture in a Moscow Air Museum. It was reported that the helicopter in question resembled the US helicopter S-51 designed by Sikorsky. It is possible that the Yak-100 was, in fact, a copy of this US helicopter. A photograph of the Yak-100 later appeared in a June 1959 edition of Kridla vlasti, and it has been reported that a picture of a three- bladed single-rotor helicopter, designated the Yak-100, appeared in a Soviet book published in Moscow in 1960. The extent to which this helicopter design was developed in the USSR was not known in the West.
Helicopter Soviet manufacture Yak-100 was developed in the mid 1940s in the Yakovlev Design Bureau. The machine is equipped with one main and one tail rotor. The first device of Yak-100 was manufactured in 1948. The serial production of the helicopter had not arrived, due to the fact that in parallel Mil helicopter was released under the name Mi-1, which is considered a high-quality and reliable. The external appearance of the device is very similar to the Sikorsky helicopter called R-5. The literature often found in place of the Yak-100 its other name - the Yak-22.
The Soviet government also did not want to lag behind the achievements of American designers and has issued a decree on the manufacture of single-rotor helicopter. This task was given to the Yakovlev Design Bureau, Mil and Kamov. Projected planned helicopter equipped with the same engine as the helicopter Mil, namely AI-26GR. These machines had the same engines only, apparently they were quite different.
The helicopter Yak-100 had excess capacity, which made it possible to achieve excellent flight and maneuvering flight characteristics. The quality of the engine has allowed to carry out long flights without a motor overheating. There was also improved control system that allows the pilot to quickly jump to different flight regimes. In addition, the device has a good review by a large percentage of the cockpit glazing. These characteristics make it possible to operate the machine, even the pilots of average fitness. Pilots, who have carried out flights on the Yak-100, confirm the ease of control and convenience when flying pilot location.
The first helicopter Yak-100 took off in autumn 1948, which field the machine undergoing flight tests. After the start of flight testing was an active race in the design between the OKW, it stimulated the work of designers and led to the emergence of high-quality devices. After the factory test helicopter Yak-100 was aimed at testing the state commission. According to the results of tests in 1950 the Mi-1, it was decided to start a series, and the Yakovlev aircraft did not see further development. Because of this, only two helicopters Yak-100 model was built.
|The diameter of the rotor, m||14.50|
|The diameter of the tail rotor, m||2.60|
|Weight, kg null||1805|
|engine's type||1 AI-AP 26GRFL|
|Power, hp takeoff||1 x 575|
|rated||1 x 420|
|Maximum speed km / h||170|
|Practical range, km||325|
|Practical ceiling, m||5250|
|Static ceiling, m||2720|
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