Determination of the mechanical characteristics of the subliming thermal protective coating for rocket and space technology
Authors: Shvetsov G.P., Romanenkov V.A., Kruglov P.V.
Published in issue: #10(70)/2017
DOI: 10.18698/2308-6033-2017-10-1687
Category: Aviation and Rocket-Space Engineering | Chapter: Design, construction and production of aircraft
Thermal protective coatings are used in rocket and space technology to ensure reliable operation of the structure in a specified temperature range. One method for implementing heat-shielding is the ablation method, based on the destruction of the thermal protective coating simultaneously with heat removal. Closed JSC Experimental Machinery Plant "RSC Energia " is the only enterprise in the country manufacturing thermal protection for manned spacecraft. The enterprise is currently working on the creation of new promising spacecraft for manned interplanetary flights, where thermal protection is one of the main constituent parts of the design. When creating a technology for the rocket and space equipment production due to technology multivariance it is necessary for individual structural elements to possess the best physical and mechanical properties. Here the results of experiments to determine the mechanical characteristics of the fluorolon: the ultimate strength and ultimate elongation are presented. Based on the results of the experiments, relationships for the stresses and strains are constructed. The values of the tensile strength of 23.1 MPa and the ultimate elongation of 57.5% are obtained. It should be noted that significant elongation of the samples is characterizing the plasticity of the fluorolon. Therewith the strength of the material is higher than the assumed design values. These results will be useful in the technological preparation of the production of thermal protective coatings for rocket and space technology.
References
[1] Dzhur E.A., Vdovin S.I., Kuchma L.D. et al. Tekhnologiya proizvodstva kosmicheskikh raket [Space rocket manufacturing technology]. Dnepropetrovsk, Dnepropetrovsk State University Publ., 1992, 184 p.
[2] Kalinchev V.A. Tekhnologiya teplozashchity i teploizolyatsii izdeliy [Technology of thermal protection and thermal insulation of products]. Moscow, BMSTU Publ., 1993, 61 p.
[3] Romanenkov V.A., Kolesnichenko A.F., Martynov M.V. et al. Povyshenie fiziko-mekhanicheskikh pokazateley teplozashchitnykh pokrytiy pri avtoklavnom formovanii v neytralnoy srede [Increase of physical and mechanical characteristics of thermal protective coatings when autoclave molding in a neutral environment]. XL Akademicheskie chteniya po kosmonavtike, posvyashchennye pamyati akademika S.P. Koroleva i drugikh vydayushchikhsya otechestvennykh uchenykh - pionerov osvoeniya kosmicheskogo prostranstva. Sbornik tezisov [Collection of abstracts of XL Academic readings on cosmonautics, dedicated to the memory of Academician S.P. Korolev and other outstanding domestic scientists - pioneers of space exploration]. Moscow, BMSTU Publ., 2015, pp. 406-407.
[4] Romanenkov V.A., Kuznetsova L.N., Mamyanova E.N., Guskova M.R. Tekhnologiya mashinnogo raskroya i sshivki mnogosloynykh steklokarkasnykh poloten dlya teplovoy zashchity spuskaemogo apparata kosmicheskogo korablya [Technology of machine pattern cutting and joining multi-layer glass-frame fabrics for thermal protection of the descent vehicle of the spacecraft]. Aktualnye problem kosmonavtiki: Trudy XXXIX Akademicheskikh chteniy po kosmonavtike, posvyashchennykh pamyati akademika S.P. Koroleva i drugikh vydayushchikhsya otechestvennykh uchenykh - pionerov osvoeniya kosmicheskogo prostranstva [Actual problems of cosmonautics: Proceedings of XXXIX Academic readings on cosmonautics, dedicated to the memory of Academician S.P. Korolev and other outstanding domestic scientists - pioneers of space exploration]. Moscow, BMSTU, 2015, pp. 459-460.
[5] Tarasov V.A., Romanenkov V.A., Komkov M.A. Izvestiya vysshikh uchebnykh zavedeniy. Mashinostroenie - Proceedings of Higher Educational Institutions. МаМт Building, 2014, no. 8, pp. 35-43.
[6] Kruglov P.V., Tarasov V.A. Nauka i obrazovanie - Science and Education, 2012, no. 1. Available at: http://technomag.edu.ru/doc/260312.html
[7] Kruglov P.V., Tarasov V.A., Bolotina I.A. Nauka i obrazovanie - Science and Education, 2012, no. 2. Available at: http://technomag.edu.ru/doc/339658.html
[8] Kruglov P.V., Bolotina I.A. Inzhenernyy zhurnal: nauka i innovatsii - Engineering Journal: Science and Innovation, 2016, iss. 5. Available at: http://dx.doi.org/10.18698/2308-6033-2016-5-1494
[9] Kolokolkina N.V., Subbotin V.V., Petrova A.V., Redina L.V. Poluchenie modifitsirovannogo volokna ftorlon s povyshennym urovnem gidro-, oleofobnosti [The preparation of the modified fluorolon fiber with an increased level of hydro-, oleophobicity]. Sbornik materialov mezhdunarodnoy nauchno-tekhnicheskoy konferentsii "Sovremennye naukoemkie tekhnologii i perspektivnye materialy tekstilnoy i legkoy promyshlennosti " (PROGRESS 2013). Ivanovo, 28-29 maya 2013 [Proceedings of the International Scientific and Technical Conference "Current High Technology and Promising Materials of Textile and Light Industry (ADVANCEMENTS - 2013). Ivanovo, May 28-29, 2013]. Ivanovo, Ivanovo State Textile Academy Publ., 2013, pp. 403-404.
[10] Semenov A.P. Trenie i smazka v mashinakh i mekhanizmakh - Friction and Lubrication in Machines and Mechanisms, 2007, no. 12, pp. 21-36.
[11] Bakhareva V.E., Nikolaev G.I., Anisimov A.V. Rossiyskiy khimicheskiy zhurnal - Russian Chemical Bulletin, 2009, vol. LIII, no. 4, pp. 4-18.
[12] Lazarenko S.V., Lipatov V.A., Ivanov A.V., Parfenov I.P. Izvestiya Ugo-Zapadnogo gosudarstvennogo universiteta. Ser. Tekhnika i tekhnologii - Proceedings of South-Western State University. Ser. Technics and Technologies, 2014, no. 4, pp. 90-96.
[13] GOST 11262-76. Plastmassy. Metod ispytaniya na rastyazhenie [State Standard 11262-76. Plastics. Tensile test technique]. Moscow, Standartinform Publ., 1986, 16 p.
[14] Bulanov I.M., Nekhoroshikh G.E. Opredelenie mekhanicheskikh kharakteristik kompozitsionnykh materialov [Determination of the mechanical characteristics of composite materials]. Moscow, BMSTU Publ., 1993, 39 p.