Research of the process of distributing the middle part of tubular blanks
A significant problem in the aircraft industry remains the production of reliable hydro-gas systems, such as flight control, landing gear retraction and release, wheel turn control of the front landing gear, control of air brakes and spoilers, engine thrust reversal control, et al., providing a high degree of performance and reliability. The article discusses the technological processes of manufacturing parts for hydro-gas systems of aircraft. Research has been carried out on the expansion of the middle part of thin-walled tubular billets by cold plastic deformation, which showed that the most dangerous is the middle part of the considered part of the billet, where there are significant tensile stresses. The reduction in tensile stresses that occurs when creating an ice retainer allows to increase in the expansion ratio. The application of new types of working bodies is proposed for transferring pressure to the deformation zone.
 Min Ko Hlaing., Phone Htet Kyaw., Maryn B.N. Defect Analysis of Operating Hydro-Gasified Piping System. Proceedings of the 5th International Conference on Industrial Engineering (ICIE 2019). Lecture Notes in Mechanical Enginee-ring, 2019, vol. 1, pp. 885–894. DOI: 10.1007/978-3-030-22063-1_94
 Feoktistov S.I., Kyaw Zayar Soe. Opredeleniye tekhnologicheskikh vozmozhnostey titanovykh i alyuminiyevykh splavov pri razdache [Determination of technological capabilities of titanium and aluminum alloys during distribution]. Uchenye zapiski, 2019, no. I-1 (37), pp. 4–9.
 Maryin S.B., Phio Wei Aung. Razlichnyye tipy rabochikh tel dlya peredachi davleniya pri razdachi trubnykh zagotovok [Various types of working media for transmitting pressure when dispensing pipe billets]. Scientific and technical creativity of graduate students and students. Materials of the 47th Scientific and technical conference of students and graduate students. Komsomolsk-on-Amur, 2017, pp. 903–906.
 Maryin S.B., Phyo Wai Aung. Working Body for Deformation of Thin-Walled Pipe Billets. Materials Science Forum, 2019, vol. 945, pp. 628–633. https://doi.org/10.4028/www.scientific.net/MSF.945.628
 Feoktistov S.I., Potianikhin D.A., Maryn B.N., Kyaw Zayar Soe. Simulation of thin-walled workpieces ends expanding for pipelines making. IOP Conference Series: Materials Science and Engineering, 2019, vol. 510, art. 012015.
 Feoktistov S.I., Kyaw Zayar Soe. Opredeleniye predel’nogo koeffitsiyenta razdachi po FLD-diagrammam [Determination of the limiting distribution ratio according to FLD diagrams]. Forging and Stamping Production. Metal Forming by Pressure, 2019, no. 5, pp. 27–34.
 Mironova L.I. Obrazovaniye ostatochnykh napryazheniy pri razdache stal’nykh trub [Formation of residual stresses during the distribution of steel pipes]. Problems of Mechanical Engineering and Automation, 2019, no. 1, pp. 58–63.
 Feoktistov S.I., Kyaw Zayar Soe. Metodika rascheta protsessov obzhima i razdachi trubnykh zagotovok po krivolineynoy opravke [Methodology for calcula-ting the processes of crimping and expanding pipe billets along a curved mandrel]. VII Scientific-practical conference with international participation “Youth of the XXI century”, 2018, pp. 92–99.
 Maryin S.B., Phyo Wai Aung. Device for Testing Pipe Billet. Solid State Phenomena, 2020, vol. 299, pp. 1166–1171. https://doi.org/10.4028/www.scientific.net/SSP.299.1166
 Popov I.P., Demyanenko E.G., Suleymanova I.R. Ustroystvo dlya formoobrazovaniya kol’tsevoy tonkostennoy zagotovki [A device for forming an annular thin-walled workpiece]. Pat. no. 115256 Russian Federation, 2012, bul. no. 12.
 Nepershin R.I. Razdacha tonkostennoy truby puansonom s krivolineynym profilem [Distribution of a thin-walled pipe with a punch with a curved profile]. Problems of Mechanical Engineering and Reliability of Machines, 2010, no. 1, pp. 80–88.
 Popov I.P., Demyanenko E.G. Sposob formoobrazovaniya tonkostennykh ose-simmetrichnykh detaley bochkoobraznoy formy [The method of forming thin-walled axisymmetric barrel-shaped parts]. Pat. no. 2548867 Russian Federation, 2015, bul. no. 11.