Background with aircraft Yak-17 designation is: in February 1946 city, even when the first Yak-15 was running on the ground, Government instructed the OKB-115 AS. Yakovlev develop faster fighter engine Jumo-004. After the start of the Yak-15 tests came another decree the Council of Ministers with the requirement to improve its performance data. the plane itself was designated Yak-17. Layout fighter remained, As in the Yak-15. The growth rate was expected to receive the replacement thick wings on a more subtle, with less resistance.
This resulted in the alteration of the main landing gear. Since the thin wing they are not fully placed, I had to hang on the rack force fuselage elements. The plane was built 3 September 1946 city, and on 20 September was appointed its first flight. However, the first take-off did not take place, They were produced only taxiing test pilot GS. Klimushkin. A "real" fighter with the designation Yak-17 (Yak-15U) It was built at the aircraft factory number 464 alteration by serial Yak-15. In the final act of state tests of the Yak-15, in particular, It noted: "To consider it necessary due to design simplicity, small thrust RD-10 and simplicity piloting… Yak-15 modified to trainer with dual controls and tricycle landing gear ". These recommendations became the basis for the development of the Yak-15U single and double Yak-21T (tricycle), after adopting received the designation Yak-17 and Yak-17 UTI, respectively.
Single Yak-17 fighter was a further development of the Yak-15. Compared with the serial Yak-15 thereon redesigned front fuselage, increased to 0,1 m2 area and the horizontal tail aerodynamic compensation elevator, increased height of the keel. I had to make space between the wing spars for cleaning wheels and introduce fuel tanks under the wing tips. Increased the length and height of the cab, that improve your posture pilot.
Flight tests conducted by test pilot GS. Klimuškin. Factory tests began in June and ended in August 1947 g. The plane of their data surpassed serial Yak-15. After re-state tests it was adopted with the name of the Yak-17. FROM 1948 by 1949 g. plant number 31 Was built 430 machines (including training). Yak-17 and Yak-17UTI operated not only in the USSR, but also in Poland, Czechoslovakia and China.
The plant № 31 one of the serial Yak-15 urgently altered in Spark Yak-21 T. First flight, I drove the car Pilot GS. Klimuškin, in May 1947 g. Factory tests were completed two weeks later, and in July - and the state. Aircraft, passed state tests, It did not satisfy the requirements of the Air Force for flight characteristics. The range is almost two times less, the maximum speed is below, continuous climb at maximum speed mode can be carried out only up to a height 8000 m. Routine tests of serial Yak-17UTI shown, that the aircraft weight by at 100 kg. fell climb, range and duration. Although the aircraft and went into mass production, but deficiencies remain unresolved. The instructor in the aircraft could not start the engine, or remove the landing gear, shields, to conduct two-way radio. Gradually, the number of defects have been remedied. The Yak-17UTI was the first in the Soviet training jet fighter.
Modification Yak-17
Yak-15U - pervonachalnoe oboznachenye Yak-17
Yak-21T - pervonachalnoe oboznachenye Once 17UTY.
Yak-17 - a serial fighter.
Yak-17UTI - double training option.
Yak-17V - polskoe oboznachenye Once 17UTY.
Tactical-technical characteristics of the Yak-17
– First flight: June 1947 of the year
– Getting Started: 1948 year
– End of operation: at the beginning 1960 years
– years of production: 1948 — 1949
– units produced: 430
As the 17 crew
– 1 human
The dimensions of the Yak-17
– Length: 8,70 m
– Wingspan: 9,20 m
– Height: 2,30 m
– wing area: 14,85 m²
– Wing loading: 194 kg / m
Engine Yak-17
– 1× TRD RD-10A
– pull: 1× 910 kgf
– thrust-to-weight ratio: 0,31
As Wes-17
– empty weight: 2081 kg
– Curb weight: 2890 kg
– Weight maximum takeoff: 3240 kg
Speed Yak-17
– Maximum speed at ground: 700 kmh
– Maximum speed at height: 748 kmh
– Skoropodъёmnost: 17,6 m / s
Range Yak-17 flight
– without PTB: 395 km
– with PTB: 717 km
Practical ceiling Yak-17
– 12750 m
As Vooruzhenye 17
– Small-pushechnoe: 2× 23 mm HC 23km
– Boezapas: 2×60 23 mm cN.
Photo Yak-17
