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Yakovlev Yak-8


Yak-8 - passenger plane, which was designed to carry six people. It equipped with two motors M-11FM, with a capacity of 145 hp each. It was created in OKB Yakovleeva based night bomber Yak-6.

The design is mainly made of wood, linen lining. The middle part of the fuselage is made of semi-monocoque type. The height of the walls of the transverse webs was 80 mm. Outside and inside the plane off with plywood sheathing thickness 2 mm. Finally got a pretty tough plywood box. The tail and nose portion taken from the Yak-6. Wing-in-one, two-spar, wooden. Plumage is also made of wood. Boarding an airplane full linen. Chassis - retractable type cleaning is in the nacelle, the main wheels are sized 600h180 mm tailwheel - 220h110 mm.

Yakovlev Yak-8

The design of the new plane was easy and efficient, but the test machine in flight have shown a lack of power to such an extent. It was not surprising, because the plane is specified in the project with the layout engine M-12, which had a capacity of 190 hp But they did not have to manufacture. Therefore established much smaller traction motors M 11FM. The Yak-8 showed quite good speed - 248 km / h, some of the shortcomings of the basic model have been corrected. The device successfully passed state tests and received a recommendation for mass production, which failed to start because of the transition to the production of metal and operation of passenger aircraft.

Yak-8 characteristics:

Modification Yak-8
Wingspan, m 14.80
Length m 11.35
Height, m  
Wing area, m2 30.00
Weight, kg  
empty aircraft 1750
normal takeoff 2700
engine's type 2 PD M-11FM
Power, hp X 2 145
Maximum speed km / h 248
Cruising speed, km / h 202
Practical range, km 890
Rate of climb, m / min 156
Practical ceiling, m 3900
Crew 2
Payload: 6 passengers




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The project Yak-8 is another unrealized project quite good aircraft. As always, the government sets the task, throw money, and ultimately give up the project and close the ego. Yet when creating this machine was made a tremendous amount of work by our designers, which was used for the construction of these devices. As the previous guest said this machine can really be considered, the transition from the standard model of combat fighters and bombers to civilian devices. Although it is a new car, but it has a lot in common in their design with the bomber Yak-6.

The Yak-8 conceived as a passenger vehicle, designed to carry 6 people. Oversaw the creation of a new "Yak" was entrusted to a young engineer Yakovlev Oleg Antonov. For the base was passed night bomber Yak-6. In general, light, economical and sufficiently reliable scheme would contribute to the success of the Yak-8 operation. However, summed up the engines. Instead of the designers of engines M-12 190 hp with a thrust that could not provide all the mortgaged series planes were forced to equip the M-11FM, which had a nominal capacity of only 100 hp This immediately deteriorated flying characteristics Yak-8. The designers did not give up: the work done by the results of test flights work still allowed to correct a number of deficiencies, and the production of Yak-8 could begin. But again, the plane was not lucky - in the aircraft industry began the transition from wood to metal, as a main structural materials.
Yak-8 become a stepping stone to the transitional phase of post-war life. Thanks to the first peace (July 1945 g) request for serial construction of the Yak-8 Kharkov aircraft factory was disbanded and was able to keep its specialization of production.

Recently, I faced with the Yak-8. Generally, this machine is designed as a passenger ship for transporting troops. But as with most projects of this time it is not widely used. Unfortunately, at all times our officials emit huge scrip money in the development of new military equipment programs, and in consequence they do not find a decent application. On the other hand, these costs are essential to maintain that the military potential of the country.