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Yak-6
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Yak-6

Yakovlev Yak-6

 

Yak-6 - a direct participant in the Second World War, designed Yakovlev in 1942, the design was carried out in two versions: the bomber and transport. Designers have made emphasis on the most simple operation, low cost of production with minimal use of metal, which was in short supply during the war.

 

Most of the aircraft was built in the transport version. Behind the cockpit was located a compartment for six passengers or cargo. Reserve fuel 278 kg enough to 580 km flight. The Soviet Air Force Yak-6 nicknamed "Duglasenkom" because of the small size.

 

History of the Yak-6

 

The decision on the construction of a dedicated short-range night bomber was made 26.04.1942. Design and development of apparatus instructed Yakovlev.

Yak-6

Given the military situation in the country, the future development of the Yak-6 was accelerated. Already in July 1942, the first two instances were in partial readiness: transport was ready to 75%, bombing - at 25%. The experimental machine factory number 47 released in Orenburg. Factory tests of the transport Yak-6 lasted from August to September 1942 He was praised in terms of manageability and recommended for use.

 

Deficiencies were identified on the unit a little, they were considered as insignificant and immediately sent a car to Moscow for the state tests. The State Commission of the USSR Air Force has revealed a lot more errors in the transport Yak-6. According to the conclusion of the aircraft had insufficient longitudinal and lateral stability, extremely low load was on the control lever, which prevented the pilot to assess the situation in the air. At night it was impossible to use the machine as instrument panel with lighted indicator reflects on the cab windscreen. Another minus - one-piece wing, which made it difficult to use. During the official tests conducted 34 test flight.

 

Yak-6 was cheap to produce, easy to use, undemanding to fuel type. It can be used in the transport, cohesive, sanitary versions and variants of the night near the bomber.

 

It recommended for serial production after the following modifications:

  1. improving lateral stability;

  2. increasing the load on the steering units;

  3. improved forward vision during rulezhek and climb;

  4. introduction detachable wing;

  5. Cabin device for night flights.

 

Already at the first production aircraft finishing all successfully implemented.

 

DesignYak-6

 

Yak-6 is a cantilever monoplane low-wing solid wood construction. Bow, center and aft fuselage join hands together overhead steel nodes. The slots at the joints sealed with cloth tape.

Yak-6

The bow and the middle part of the fuselage monocoque made under the scheme. fuselage frame consists of pine frames, stringers, spars and plywood sheathing. Inside the middle of the passenger compartment was located, inside lined with plywood.

 

The passenger cabin, located in the middle part of the fuselage, was also from the inside lined with plywood. The tail was typical of the fabric covering.

 

Dvuhlonzheronnoe wing without connectors are attached to the fuselage. But for the convenience of transportation unit railway transport wingtips disconnected.

 

The wing is made of a standard profile of Clark-YH. Due to the increased thickness of the wing of the plane was characterized by high tactical flight characteristics and easy handling.

 

Slotted ailerons had wooden construction with fabric covering. In the center section spars placed fuel tanks, and in the rear - a boarding plate made of plywood.

 

The tail assembly solid wood, has a fabric covering. Stabilizer and fin dvuhlonzheronnoe. Wheels are equipped with swivel and height-trimmers.

 

Chassis tricycle, has a tail wheel. In the first instance of the main landing gear had been made clean, had cable runs and manual transmission.

 

Tests carried out on the Yak-6, showed that loss of speed when the landing gear is small - up to 20 km / h. But the reliability of non-retractable design was safer, so the next series got tight mounting racks, chassis casement niches were replaced with duralumin lid.

 

Supports telescopic landing gear, strut, with gas-liquid damping. The wheels are equipped with air brake chamber. Crutch has a locking mechanism, Swivel.

 

Airplane applied dual control cable runs. Issuing and retracting flaps were made using the helm, which was located between the pilots' seats. From it through the cable runs effort transferred to a special screw mechanism. Trimmers governed also through cable runs.

 

The power plant includes two five-cylinder radial engines, air-cooled. The capacity of each engine - 140 hp Diameter wooden propellers fixed pitch - 2,2 m.

 

Such a propulsion system used on all Soviet light airplanes of the time. In order to reduce manufacturing costs, many elements of the design of the power plant borrowed a training aircraft UT-2. The only difference was in the tank, which installed two each had a capacity of 195 liters on the new car. They were made of plywood and sealed by adhesive coatings VIAM-B-3.

Yak-6

The Yak-6 had a simple set of equipment, which allowed him to spend the night flights. These included flight and navigational instruments, landing light and navigation lights that were fed with electricity from the battery. Radio stations on the serial Yak-6 not installed.

Some models were equipped gun ShKAS, access to which is opened through a special hatch battened down two duralumin covers.

 

The Yak-6 has camouflage masking tricolor color. From below the car is painted in light blue color. In winter, easy washing aircraft repainted with white paint to make the masking qualities.

Yak-6 characteristics:



Modification Yak-6
Wingspan, m 14.00
Length m 10.35
Height, m  
Wing area, m2 29.60
Weight, kg  
empty aircraft 1433
normal takeoff 2350
engine's type 2 PD M-11F
Power, hp X 2 140
Maximum speed km / h 230
Cruising speed, km / h 185
Practical range, km 900
The maximum rate of climb, m / min  
Practical ceiling, m 3380
Crew 2
Payload: 4 passenger
Armament: one 7.62-mm machine gun ShKAS
bomb load - up to kg 500, 5 holders for bombs weighing up to 50 250 kg.

Aircraft

Comments

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As for me Yak-6 fairly good airplane with a high specification. But I'd designed a machine with a nose landing gear and not from the rear, as it was done Yakovlevtsami. As for the construction it is quite logical and reliable, besides the materials are light and not expensive. Farm unit itself is made of sheet steel and wings with aluminum alloy, which was stretched over a sturdy fabric. A special feature of the machine can be called that he could be equipped with engines of various types. Rather simple layout of the project, as for me, especially since he had a lot of shortcomings. As the Yak-6 allowed into serial production, I do not understand. The main problem was a weak powerplant. Although I have not met with negative reviews on this project.

Yak-6 - airplane, the creation of which went to war. The need for it has come to the understanding of the fact that the P-5-2 and Y do not correspond to the time and not able to resist the German technology. Speed, range, payload prewar cars were unsatisfactory. Designing a new specialized aircraft GKO instructed the OKB A. Young Yakovlev. The work was pawned just two options - bomber and transport. The tree structure used in the maximum. Even fuel tanks made of plywood sheets treated with a special compound. Like all Yakovlevskoye car, he was extremely easy to absorb and easy to manage, and subservient to the state was only one mechanic. In the military units it immediately appreciated and loved. During the two years of combat Yak-6 performed bombardment, transport route to the front line, providing advanced communication with the rear and finished service attack aircraft.
Whether to create a plane in a hurry? Yes. Gaps, errors - and this is enough. But the plane performed its task. Largely due to "Duglasenku" Soviet aircraft to 1945 city became the mistress of the sky, and the Yak-6 made the basis for creating the first post-war passenger aircraft in the USSR.

This freighter was the first aircraft of this class, who made Yakovlev. I believe that it is a successful model, but for civil aviation, and not for military purposes. Although it was made during the Second World War, but it is not widely used in the army. Although it has been done and several modifications of this device Yak-6, and did not have wide application. Yet the creation of the first more or less high-quality transport aircraft marked the further development of the aviation industry in areas of Yakovlev.

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