I-110 - experimental fighter D.L. Tomashevich, developed in the Design Bureau of Plant No. 288 in Omsk. The aircraft, which received the designation "110", differed from the serial machines of this period, first of all, by its engine and high technological effectiveness of the design. New liquid-cooled engine VK-107P with a capacity of 1400 hp was considered very promising. However, it has not yet been finalized. The very intense thermal conditions required an enhanced cooling system. Largely because of this, attempts to use it on already serially built aircraft did not give the expected results. The design team took into account the features of the new engine when designing the fighter. To ensure its effective cooling, large area water and oil coolers were used on the aircraft. They were hung under the engine hood. The outlet adjustable skirts of both radiators were placed in parallel at the bottom of the bonnet. Thus, the most favorable conditions were created for the operation of the engine.
The design of the fighter is mixed, with minimal use of metal. The front of the fuselage, including the engine compartment and cockpit, was a welded steel tube truss. The entire tail section is made of birch veneer glued in several (from ten to five) layers. The wing frame with an area of 18.73 m & # 178 ;, ailerons and tail - duralumin. The center section is flat. Between the front and main spars of the center section, there are wheel arches OOSh. The tail wheel was retracted into the fuselage.
The weaponry "110" was very powerful. A 20 mm cannon was placed in the collapse of the engine cylinders. Above the engine were installed 2 large-caliber machine guns UBS and two ShKAS. The weight of a second volley of all five firing points reached almost 3.5 kg. On the locks under the wing, it was possible to suspend bombs up to 500 kg.
The designers of the fighter, in an effort to facilitate the production of the machine as much as possible, widely used the so-called round mounting dimensions, multiples of 10 mm. As a result, the assembled blocks and parts of the aircraft were interconnected without fitting. The entire propeller group, for example, together with the radiators could be suspended from the fuselage truss as a single unit with only four bolts. Unfortunately, the desire to simplify the technology and a powerful water-radiator system led to a certain overweight of the aircraft, the weight of the empty fighter reached 3285 kg, takeoff weight - 3980 kg.
During the tests conducted by the pilot P.M. Stefanovsky and engineer V. Bolotnikov, the plane "110" showed quite high flight characteristics. At the ground, its speed reached 508 km / h, and at an altitude of 6200 m - 610 km / h. The ceiling of the fighter is 10 thousand meters, the flight range is 1050 km. Due to the large weight, the climb rate of the "110" was insufficient. It took him almost 7 minutes to climb 5 km. The aircraft "110" was not transferred to serial production, since after the elimination of the testers' remarks, it did not have significant advantages over the fighters already adopted for service.
October 10, 2020.
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