Method for manufacturing disk blanks of variable thickness for compact aircraft
Authors: Kruglov P.V., Bolotina I.A.
Published in issue: #9(69)/2017
DOI: 10.18698/2308-6033-2017-9-1674
Category: Aviation and Rocket-Space Engineering | Chapter: Design, construction and production of aircraft
The paper suggests an alternative technique for disc blanks manufacture for segmented edging of the shaped charge. The method enables us to make such a blank in which as the thickness decreases from the center to the periphery, a periodic thickness profile is formed in the circumferential direction. The disc metal blank is fixed in a three-jaw chuck and the end of the disk is trimmed with a decrease in thickness along the generatrix from the center to the periphery. Under the influence of the clamping forces, the disk blank is deformed and, after processing, its cross section has a three-sided periodic profile. We carried out experiments to process disk blanks for different values of the clamping force in the work tool and obtained the dependencies of the disc thickness on the clamping force. After harmonic analysis of the thickness of the cross section, we determined the amplitudes values of harmonics of different thicknesses in the circumferential direction at different distances from the center of the disk blank.
References
[1] Kolpakov V.I. Nauka i obrazovanie - Science and Education, 2012, no. 2. Available at: http://old.technomag.edu.ru/doc/334177.html (accessed December 10, 2016).
[2] Kolpakov V.I., Bandurin I.N. Inzhenernyy vestnik - Engineering Bulletin, 2014, no. 12. Available at: http://engbul.bmstu.ru/doc/744352.html (accessed December 10, 2016).
[3] Selivanov V.V., ed. Boepripasy [Ammunition]. Vol. 1. Moscow, BMSTU Publ., 2016, 506 p.
[4] Bugiel H.G. Insert for a projectile-forming charge. US patent 4590861, 27.05.1985, p. 6.
[5] Aubry J. et al. Core-forming explosive charge. US patent 4922825, 08.05.1990, p. 7.
[6] Weimann K. Arrangement for production of explosively formed projectiles. US patent 4982667, 08.01.1991, p. 7.
[7] Liu J., Gu W., Lu M., Xu H., Wu S. Defense Technology, 2014, no. 10, pp. 119-123. DOI 10.1016/j.dt.2014.05.002
[8] Asmolovsky N.A., Baskakov V.D., Tarasov V.A. Izvestiya vysshikh uchebnykh zavedeniy. Seriya Mashinostroenie - Proceedings of Higher Educational Institutions. МаМт Building, 2013, no. 8, pp. 8-14.
[9] Gavrilov A.N. Tochnost proizvodstva v mashinostroenii i priborostroenii [Production accuracy in mechanical engineering and instrument making]. Moscow, Mashinostroenie Publ., 1973, 567 p.
[10] Kruglov P.V., Tarasov V.A., Baskakov V.D. Nauchnye osnovy proektirovaniya tekhnologii izgotovleniya pretsizionnykh kumulyativnykh zaryadov. [Scientific basis for the design of precision shaped charge manufacturing techniques.]. Ekstremalnye sostoyaniya veshchestva. Detonatsiya. Udarnye volny. Trudy Mezhdunarodnoy konferentsii III Kharitonovskie tematicheskie nauchnye chteniya [Extreme states of matter. Detonation. Shock waves. Proceedings of the International Conference: III Khariton topical scientific conference]. Sarov, FGUP RFYaTs-VNIIEF Publ., 2002, pp. 254-257.
[11] Kruglov P.V., Tarasov V.A., Baskakov V.D. Analiz nasledstvennykh preobrazovaniy tekhnologicheskykh pogreshnostey pri izgotovlenii kumulyativnykh zaryadov. [Analysis of genetic transformation of technological errors in the production of shaped charges]. Veshchestva, materialy i konstruktsii pri intensivnykh dinamicheskykh vozdeystviyakh. Trudy Mezhdunarodnoy konferentsii V Kharitonovskie tematicheskie nauchnye chteniya [Substances, materials and designs at intensive dynamic impacts. Proceedings of the International Conference: V Khariton topical scientific conference]. Sarov, FGUP RFYaTs-VNIIEF Publ., 2003, pp. 477-480.
[12] Kruglov P.V., Tarasov V.A., Baskakov V.D. Matematicheskoe modelirovanie yavleniy tekhnologicheskoy nasledstvennosti pri izgotovlenii kumulyativnykh zaryadov [Mathematical modeling of technological heredity phenomena in the manufacture of shaped charges]. Ekstremalnye sostoyaniya veshchestva. Detonatsiya. Udarnye volny. Trudy Mezhdunarodnoy konferentsii VII Kharitonovskie tematicheskie nauchnye chteniya [Extreme states of matter. Detonation. Shock waves. Proceedings of the International Conference: VII Khariton topical scientific conference]. Sarov, FGUP RFYaTs-VNIIEF Publ., 2005, pp. 645-648.