Yak-2 near-bomber paper model
The paper model of the Yak-2 short-range bomberis a Soviet reconnaissance bomber.
Materials and tools:
- scissors, paper knife, drawing ruler
- glue brushes and paint;
- watercolors (or pencils), toothpicks;
- clear acrylic glue ("Moment", etc.);
- to print the model matte photo paper with a density of 170-180 g / m2; for small parts - 70-80 g / m2.
- Before you assemble the part, read the drawings and instructions. Determine the place of each part and imagine its assembly;
- Make holes in details before cutting out the part;
- Cut only the part (s) you need right now. Unpacked items in a box, and unused sheets in a closed folder (as an option). Throwing out trash after work, carefully inspect the scrap paper;
- for the best bending of the part, it is necessary to draw a ruler along the fold line, slightly pressing,the blunt side of a knife or a toothpick so as not to damage the surface of the paper. Better to do it from the wrong side of the part;
- Keep your fingers clean and be sure to use wipes to wipe your hands, because hands may get dirty in the process;
- wind up cylindrical parts before gluing onto a round object of a suitable diameter, this will give them shape;
- Before gluing it is necessary to paint the ends of the part. White crop lines spoil the overall look of the model. To paint the ends, use watercolors or gouache paints. After selecting the desired color, apply them in a thin layer, then allow the paint to dry. About markers better to forget;
- Take your time with gluing. First, cut out the part, paint it from the end, wait for the paint to dry, assemble the part. Attach it to the place where it should be to make sure everything is done correctly. And only then stick. Do not forget to let the glue dry.
A bit of history
Soviet reconnaissance bomber Yak-2
In February 1939, at the Moscow Central Aerodrome. Frunze has a beautiful twin-engine two-kilo monoplane.It was clear to the experienced eye that the aircraft could show very high flight qualities. Even without knowing the make of the car, no one doubted that i was designed by the Yakovlev Design Bureau, a young but rather famous aircraft designer at the time. Perfectly finished, carefully painted and polished to shine, all of his cars carried branded white-red stripes on the rudders of the direction.
Factory tests of the machine, which received the intra-firm designation "aircraft 22", was conducted by Julian Janovich. Yevgeniy Georgievich Adler was appointed the chief engineer of the machine from the Design Bureau.
The plane was highly appreciated by the command of the Scientific Research Institute of the Air Force, it was flown by the head of the institute A. I. Filin himself and by the authoritative test pilot Majors PM Stefanovsky and Kabanov. No less high was the evaluation of the manufacturability of the machine. In the “Conclusions” of the report, Kholopov emphasized: “The plane 22 is cheap, has good production performance, its technology as wooden is simple, it can easily be mastered ... According to the exterior surface finishing culture, the production performance of individual components and assemblies the aircraft 22 can serve as an example for domestic aviation industry ".
"Twenty-second" without alterations could be used in other versions. Thus, when placed between the wing spars in the bomb bay of four or six 100-kilogram land mines, it turned into a BB-22 short-range bomber. And the suspension under the fuselage of two 20-mm ShVAK cannons with ammunition, laid in the bomb bay, transformed the car into an I-29 fighter. All of these options had the same flight characteristics. Conversion from one modification to another was possible even in aerodrome conditions. In fact, it turned out the first multi-purpose combat aircraft in our country.
After a series of tests, it became clear that in order to transform the BB-22 into a full-fledged bomber, one could not do without eliminating the defects found. Improvements in flight performance and operational properties of the machine can only be achieved through radical changes in the geometry and design of the airframe.
The aircraft 23 with M-105 engines, otherwise similar to the BB-22, was worked out even at the stage of preliminary design of the combat first-born of the Yakovlev Design Bureau. It was assumed that with a more powerful power plant, the car would be able to develop a speed of about 625km / h. In March 1940at the factory number 1 finished reworking a production aircraft in the BB-22bis version. Externally, the car was not much different from the usual BB-22. In May 1940 factory tests of the BB-22bis were completed. The serial production of the BB-22bis began in October 1940. These machines differed from the experimental one as follows: each of the engine nacelles was equipped with one cylindrical segmental oil radiator located in the beard, there was a serial installation of the TSS-1, outboard fuel tanks.
The state plan for 1941. envisaged the release of 1300 two-engine bomber Yakovlev. In accordance with the NCAP order, the Yakovlev machines received new names: the BB-22 with the M-103 engines became the Yak-2, and the BB-22bis with the M-105 engines — the Yak-4.
By the time of the official cessation of the production of Yakovlev bomber in February 1941, 111 Yak-2 and 90 Yak-4 were built in total.
Thus, about a hundred Yak-2 and Yak-4 aircraft were used on the South-Western Front, and about 80 more on the Western Front. In its main part, all the twin-engine bombers of Yakovlev.
Date: 11.10.2018, 23:30 / Views: 92564
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