At the end of 1954, the Design Bureau began designing a supersonic two-engine front bomber designed for a maximum speed corresponding to M = 1.7-1.9. According to the Design Bureau, the design received the designation of the plane "112" (Tu-112). The main purpose of the aircraft is the carrier of a tactical atomic bomb. In its scheme, the 112 plane in general outlined the 105 supersonic bomber scheme, but with much smaller dimensions and masses.
According to preliminary studies, prepared in the department of technical projects. The aircraft was carried out according to the scheme of a high-wing with a swept wing and feathering, a chassis-bicycle. Two TR-type AL-7F were in the rear of the fuselage, air intakes - above the fuselage. The wing was aerodynamically clean with a sweep of 55 degrees, an extension of 3.2, a narrowing of 3 and a relative thickness of 7.2%. On the wing there were ailerons and two-section flaps, occupying 19% of the wing area. The tail tail of a large sweep with a controlled stabilizer without elevator, a keel of relatively large area, fully controlled.
The configuration of the fuselage was worked out in two versions with differences in the location of the fuel stock: all fuel (5100 kg) in the fuselage, part of the fuel in the caisson parts of the center wing and the OCHK (5200 kg). In the front part of the fuselage, two separate hermetic cockpits of the pilot and navigator-operator were placed one behind the other, which was completely devoid of visual sight and worked only on instruments.
In the forward part of the fuselage there was a sighting and navigation radar "Initiative", coupled with the OPB. In the central and the back of the fuselage, there was a large bomb-bay, designed to transport a large-caliber bomb, including a nuclear bomb. A bicycle chassis with supporting wing racks was designed taking into account the use of an airplane with a runway with a hard concrete covering.
The landing gear of the chassis was loaded by 23%, the main one with paired wheels - by 77%. In the course of work on the project of the 112 aircraft, a comparative analysis of the application of a bicycle scheme of a chassis with a normal scheme was performed, with the main pillars being cleaned into the wing fairings. The weight gain for the first variant was 300 kg.
In May 1955, materials were prepared for the draft design of the 112 aircraft, but it did not go further than discussions and negotiations with the customer. The Air Force made a bid for the development of supersonic front-line bombers on the basis of a serial twin-engine fighter-interceptor Yak-25 designed by KB AS. Yakovlev (front-line bomber Yak-26, and then Yak-28), so neither this KB design, nor the light version of the 98 aircraft - the 98A (Tu-24) aircraft, further practical implementation as front-line bombers did not receive.
The basic design geometric dimensions of the aircraft "112"
|length of the aircraft fuselage||20.7 / 22.6 m;|
|wing span||12.2 m;|
|wing area||48.0 m2.|
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