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Yak-17
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Yak-17

Yakovlev Yak-17

 

Yak-17, which NATO classification called Feather, - the development of a jet fighter Yakovlev. The basic model for its production served as the Yak-15. aircraft first flew in May of 1947 During serial production in 1947- 1949 years. 430 aircraft was built. Basically, they used to train flight crews, as well as exported to Eastern Europe and China.

 

HistoryYak-17

 

After flight testing Yak-15 was compiled act, which dealt with the modification of the Yak-15 in the trainer version, which has a three-wheeled chassis and dual controls. Having a job, OKB designers set about designing and developing single Yak-Yak 15U and double-21T. As standard release cycle machines acquired titles respectively Yak-Yak-17 and 17UTI.

Yak-17

Improvements serial Yak-15 for training options was carried out in the factory Dolgoprudnom №464. There 1947 April, he was received the first copy of the Yak-21T, without weapons, with the nose landing gear, equipped with a cabin for two people. The first flight of the Yak-21T was committed 6.05.1947 running pilot GS Klimushkin.

 

Factory tests managed to finish in 2 weeks, then sent to the machine state tests in GK Research Institute of the Air Force, which were completed 10.08.1947.

 

Despite the fact that the training fighter did not show the expected estimated flight indicators for the Air Force's insistence that while much needed in a training of attack aircraft, he was recommended to put into mass production, equipping fotokinopulemetom C-13 and gun NS-23KM.

Yak-17

Yak-15U was also built on the basis of the serial Yak-15 Dolgoprudny. The training fighter was equipped with two cannons NA-23, sight TSA-1 and 22-fotokinopulemetom PAH. Applying a new chassis layout, we had to change the nose of the wing structure and system. Cockpit increased in length and height. New lamp provides the pilot a better view than the original model. The changes were made and the form of feathers: increased in size and the horizontal tail fin. The problem of a small reserve of fuel was solved by installing additional zakontsovochnyh wing fuel tanks.

 

The first flight of the Yak-15U took place in June of 1947, 10 factory tests completed in August. Until the middle of November lasted for state tests, after which experts from the Soviet Air Force aircraft delivered satisfactory assessment.

 

After minor modifications Yak-15U in March 1948 he was again entered the state tests, and then received a recommendation for mass production.

Yak-17

Serial production of the Yak-17UTI settled on a number 31 aircraft factory in Tbilisi. Here, for a period of 1948-1949 years. 430-17 Yak and Yak-17UTI was built. In comparison with the prototype production models differed enlarged scale horizontal tail, upgraded guns NS-23KM and additional fotokinopulemetom C-13. Aircraft later series were equipped with jet engines RD-10A who had lifespan 50 flight hours.

 

Operation Yak-17

 

The first copies of serial Yak-Yak-17 and 17UTI began to arrive in the Soviet Air Force in regiments 1948 of them were sent not only to the part of the defense for the development of the Yak-15, but also in other military units to get acquainted with the work of the soldiers jet combat aircraft. The use of the aircraft for military purposes was ineffective. This prevented the low margin service life, small range and low reliability of the motor RD-10. Emergency cases in the form of fire, burning blades, unauthorized switching off the engine, and so on. N. This occurred on the aircraft and its modifications often.

Yak-17

Nevertheless, simple operation, excellent visibility from the cab, low landing speed and short takeoff distance making it a great workout machine. Thanks to the above qualities, inherent in the Yak-17, raised the issue of the transition shock aviation piston powerplants on the jet.

 

Armed with the plane did not stay long and by 1952 was completely written off with the operation of all military units.

Yak-17 characteristics:



Modification Yak-17
Wingspan, m 9.20
Length m 8.70
Height, m 2.30
Wing area, m 14.85
Weight, kg  
null 2081
normal takeoff 2890
maximum take-off 3240
engine's type 1 TRD RD-10A
Thrust, kgf X 1 910
Maximum speed km / h  
near the ground 700
on high 748
Practical range, km  
without PTB 395
with PTB 717
Ceiling, m 12750
Crew 1
Armament: Two 23 mm cannon NS-23 60 with bullets on the gun.

 

Yak-17 video:

 

Aircraft

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When you create a single-seat fighter with turbojet Yak-17 aeronautical engineers have tried to get rid of the main drawbacks of the Yak-15. The aircraft used by the scheme chassis with nose wheel, which required certain changes in design compared to the base model. The ensuing increase in their weight and hence, reducing the already small range offset by the placement of additional fuel tanks on the wingtips, which by exhaustion dropped in flight. Increase the size of the cockpit of the Yak-17. Improving the shape and area of ​​the plumage has improved handling and stability of the machine in flight, reduce landing speed and mileage. Also developed a training double modification of the Yak-17UTI. She had the same chassis design as the Yak-15.
In spite of the improvements carried out, the use of Yak-17 in military operations looked bleak because of the low reliability and low engine life (up to 50 hours.). However, the plane was heading with regard to training and retraining for the operation of a fundamentally new type of aircraft. The Soviet troops Yak-17 served long. After 1948, their steel supply brotherly armies of Czechoslovakia and Poland.

I'm currently actively exploring the old model airplanes of domestic production. Machinery Yakovleva is considered the most interesting, because the designers of the Office often engaged in new and sometimes unusual models. About Yak-17 I can say as much. This small jet apparatus mainly used for training pilots, because such aircraft have only begun to emerge. Even despite the fact that the ego is not used for a long time it served as a starting point for further development of jet aircraft in the Yakovlev Design Bureau. Who knows more about the aircraft, I will be grateful to share.

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