28 Martha 1956 g. issued a decree of the USSR Council of Ministers № 424-261 (see MAP № 194 from 6 April), which forced the OKB-115 design and start construction on the basis of the Yak-26, the new lightweight high-altitude supersonic Sukhoi. according to the decree, two-seater plane was equipped with a twin-engine P-11-300. bomber design was carried out under the code of the Yak-129 in one and a half years. Designer General AS. Yakovlev with undisguised skepticism relates to a new assignment, counting, that based on the Yak-26 bomber to build good will not succeed. However, a number of employees of OKB, in particular, EG. Adler, still believed, that nothing in the impossible demands of the customer no.
As Bombardyrovschyk-28 – video
After analyzing the list of war comments on the Yak-26, they concluded, that the basic structure of the aircraft should mainly keep the. was taken serial Yak-26, to accelerate the construction of the first prototype of the Yak-129. Remaking ended at the beginning of 1958 g. And although the aircraft apparently seemed very much like a modified in 1957 g. Once 26-1, it was a completely new type of bomber.
The first flight took place 5 Martha 1958 city, and lifted the car test pilot EDO VM. Volkov. New bomber designation is assigned a serial Yak-28. However, during the state tests the customer has put forward a number of claims. For a variety of reasons bureau could not set deadlines to eliminate some of them. Short-change the calculated thrust engines, that influenced the characteristics of an experienced bomber. We attempted to address the shortcomings in the second prototype aircraft. From Yak-28-1 aircraft differed primarily with new engines R-11AF-300. Their use is required to develop a new gondola with increased cross-sectional area and air intakes oval shape with a central cone, which was put forward when the speed of M = 1,45. The aircraft was put into production at the aircraft plant in Irkutsk. The Yak-28 was the only one at the time of bomber, capable at altitudes above 10 Ltd. m with a bomb load 1200 kg fly at speeds of the order 1400 kmh. Yak-28 D has been shown in the aviation parade in Tushino 1961 g.
AT 1960 g. based on the Yak-27, Yak-K and 28 new two-seater all-weather supersonic interceptor Yak-28P was created. Compared with the adoption in 1958 g. on arms air defense interceptor Su-9, this system has been improved and allows you to launch missiles at a much greater distance to the target. Interceptor Yak-28P had the same arrangement, as well as Yak-27 K, pylons for rockets but not placed on the inside of the engine nacelles, and on the outside. Cockpit and pilot-operator had a common flashlight. Factory tests began in July 1962 city, I conducted their test pilot VM. Volkov. They ended in September 1962 g. However, even before the state tests of the car launched into production in Novosibirsk, and there at the time to continue production of the Su-11 interceptor. It has developed a rare situation, when at one plant were built at the same time two different machines. Yak-28P was the most mass modification of the whole family. they built 435 units. However, the aircraft officially adopted was not accepted, despite, that operated the air defense for nearly 20 years.
Tactical-technical characteristics of the Yak-28
– First flight: 5 Martha 1958 of the year
– Getting Started: 1960 year
– End of operation: 1994 year
– units produced: 1 180
As a crew-28
– 2 man
The dimensions of the Yak-28
– Length: 20,02 m
– Wingspan: 11,78 m
– Height: 4,3 m
– wing area: 35,25 m²
As Wes-28
– Mass normal takeoff: 16 160 kg
– Weight maximum takeoff: 18 080 kg
Engine Yak-28
– Two R11AF2-300 with traction 4690 kgf (on afterburner 6100 kgf) each
Speed Yak-28
– full speed: 1850 kmh
Range of flight of the Yak-28
– 2070 km
Practical ceiling Yak-28
– 14 500 m
As Vooruzhenye-28
– rifle: 1 × 23 mm NR-23 (further 2 × 23 MM PR 23Ya)
– bombs: normal combat load - 1200 kg, maximum - 3000 kg
– missiles: 2 × R-8M-1 (Yak-28P)
Photo Yak-28
Yak-28L - bomber with engines P-11AF2-300 and guidance system DBS-2S "Lotus"
Yak-28R - reconnaissance plane
Yak-28U - training aircraft 151 EW regiment
Yak-28PP - Airplane – jammer
Yak-28P - fighter-interceptor missile weapons
