Category: Articles

The first completely Polish glider was the SL-1 Akar glider, developed in 1922. The structure was developed and built by Adam Karpiński. The design was amateurish, but successful enough to win first and second place in the first gliding competition in 1923 in Białka near Nowy Targ. The glider was single-seat, with a frame structure,…

During the 50 years, the CCCP developed several turboprop engines. One of them was the Ivchenko AI-20 engine. This engine was used to power such aircraft as An-10, An-12 and Ił-18. The engine was developed at the end of the 50-year period in Zaporizhia. The team was headed by Alexander Ivchenko. Previously, the team was…

The French decided to radically rebuild the engine. The Atar 08 program was launched. The dimensions of the new engine have slightly improved. The compressor has grown from 7 stages to 9 stages. Compression increased to 5.5: 1. The turbine has been completely rebuilt, increasing its diameter. New alloys were introduced, including magnesium alloys. The…

The R-25 engine is a continuation of the R-11, R-13 engines. The R-25 engine was used in the MiG-21 bis aircraft. The R-25 engine has two levels of afterburning. The R-25-300 engine has 1 x 4,020 kG without afterburning thrust, 6,960 kG with the first afterburning, and 9,708 kG with the second afterburning. The engine…

The R-13 turbojet engine is a direct development of the R-11 engine, which was commonly used in MiG-21 aircraft. The engine was modernized under the supervision of S. Gawryłów. The aim of the modernization was to reduce fuel consumption, increase thrust and, above all, improve overall parameters.

The history of Ivchenko’s aircraft engines began in 1945, at the Ukrainian CCCP in Zaporizhia. At that time, the OKB-478 design office and experimental plant were organized. The task of the OKB-478 office was to develop aircraft engines for airplanes and helicopters as well as other machines and devices for industry. The office was headed…

Information on Bristol Olimpus and General Electric J57 engines penetrated the CCCP. In 1952-1954, the Moscow Aviation Institute made aerodynamic calculations for a turbojet engine with a system of two shafts (propellers, spools). The calculations were carried out to achieve the speed of Ma 2 by the future aircraft. The main difficulty was to create…

Movable aerodynamic blades of the compressor stator was one of the ways to improve the operation of the turbojet engine. General Electric has been considering for almost a year – Which concept to choose? In 1952, it was decided to use movable steering wheels. With this arrangement, it was easier to develop lubrication and sealing…

An important engine in the CCCP was the AL-7 F-1 engine, which in Archip M. Lulka’s team was called TRD-31. The engine was created at the beginning of the 50s, through the development of the AL-5 engine, especially its enlargement. The AL-7 engine was first launched in September 1952. The AL-7 engine was used to…

Aleksander Mikulin, in addition to the large AM-3 engine, also developed the AM-5 engine with a lower power. This task resulted from the collapse of the TR-3 engine program, which had high hopes. The fall of the TR-3 engine program also plunged airframe programs, including the supersonic Su-17 (the first program with such a designation).…