Keywords cloud
The results of accelerated climatic testing of specimens of mechanical rubber articles, as well as the results of climatic endurance testing of the units for the period simulating 20-year service life are specified, and the main types of defects which result in the loss of performance properties of the mechanical rubber articles are as follows: great (up to 100%) residual deformation of intersections, cracking, loss of elasticity. The results of climatic endurance testing of fuel system units, equipped with rubber articles made of D2301 rubber, fully justify the increase of the specified service life of the specified units from 12 to 16 years. It is recommended to introduce D2301 rubber into the effective normative documentation and continue studies in order to extend the nomenclature of mechanical rubber articles made of D2301 rubber to provide the reliable sealing of units during the service life of 16 years or longer.
]]>15. Enhancing operability of the fuel system units in the hot climate conditions
Organization:
DINTEM Ukrainian Research Design-Technological Institute of Elastomer Materials and Products LLC1; FED Joint Stock Company2
Page: Kosm. teh. Raket. vooruž. 2024, (1); 129-135
DOI: https://doi.org/10.33136/stma2024.01.129
Language: Ukrainian
Annotation: The article dwells on the problem of enhancement of durability for the mechanical rubber articles, which is directly related to the enhance of rubber resistance to various types of heat aging. Heat resistance during compression is most important for rubbers used for seals of various types: rings, collars, armored collars, gaskets for aviation and rocket technology hardware. Stress relaxation and the accumulation of relative residual deformation of rubbers, caused by the kinetic rearrangement of chemical bonds, are extremely sensitive to the influence of high temperatures. The main cause of the defects is the loss of elastic properties of the seals because of the accelerated heat aging of the nitrile group under conditions of long-term exposure to elevated temperatures in conditions of hot climate. The results of accelerated climatic testing of specimens of mechanical rubber articles, as well as the results of climatic endurance testing of the units for the period simulating 20-year service life are specified, and the main types of defects which result in the loss of performance properties of the mechanical rubber articles are as follows: great (up to 100%) residual deformation of intersections, cracking, loss of elasticity. The warranty life of fuel system units, made of ИРП-1078 nitrile rubber, does not exceed 12 years. Replacing the existing rubbers with rubbers created on the basis of more heat-bearing rubbers is the most promising way to improve the performance properties of the mechanical rubber articles under the high temperatures. The new D2301 rubber is based on fluorosiloxane rubber. It provides high thermal stability and, especially, the ability to maintain high performance properties for a long time under the simultaneous impact of hostile environment and high temperatures. The results of climatic endurance testing of fuel system units, equipped with rubber articles made of D2301 rubber, fully justify the increase of the specified service life of the specified units from 12 to 16 years. It is recommended to introduce D2301 rubber into the effective normative documentation and continue studies in order to extend the nomenclature of mechanical rubber articles made of D2301 rubber to provide the reliable sealing of units during the service life of 16 years or longer.
Key words: leaktightness of articles, fluorosiloxane rubber, rubber, temperature of the hot climate, physical-mechanical properties of the rubber, climatic endurance tests, elastic properties, warranty life
Bibliography:
- Lepetov V. A., Yurtsev L. N. Raschet i konstruirovanie rezinovykh izdeliy. Moskva.
Khimia. 1971. 417 s.
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Some Peculiarities of Ensuring LRE Guarantied Service Life in the Conditions of Replacement of Components of Interindustry Application Authors: Patalakha V. 2018 (2); 94-100 DOI: https://doi.org/10.33136/stma2018.02.094 Language: Russian Annotation: The article considers the present-day aspects of predicting and establishing the guaranteed service life of liquid rocket engines. Evaluation of Rockets Guaranteed Service Life. (2018) "Some Peculiarities of Ensuring LRE Guarantied Service Life in the Conditions of Replacement of Components of Interindustry Application" Космическая техника. "Some Peculiarities of Ensuring LRE Guarantied Service Life in the Conditions of Replacement of Components of Interindustry Application" Космическая техника. quot;Some Peculiarities of Ensuring LRE Guarantied Service Life in the Conditions of Replacement of Components of Interindustry Application", Космическая техника.
]]>11. Some Peculiarities of Ensuring LRE Guarantied Service Life in the Conditions of Replacement of Components of Interindustry Application
Organization:
Yangel Yuzhnoye State Design Office, Dnipro, Ukraine
Page: Kosm. teh. Raket. vooruž. 2018 (2); 94-100
DOI: https://doi.org/10.33136/stma2018.02.094
Language: Russian
Annotation: The article considers the present-day aspects of predicting and establishing the guaranteed service life of liquid rocket engines. The phases and sequence of works to specify the guarantee periods are presented. The physical ground for determining thermal ageing test modes and increased humidity test modes is set forth. The mathematical dependencies are given to determine the time of testing at increased temperature, increased relative humidity, equivalent article storage temperature. The generalized list and sequence of tests to establish a guarantee period are set forth. The content of works is considered to seek for and introduce new components of inter-industry application, in particular, replacing materials for rubber mixtures during production of rubber technical goods, polymer materials (fluoroplastics, polyamides), isotropic pyrographite, ozone friendly means for degreasing liquid rocket engine assemblies being in contact with propellant component – oxygen and to seek for alternative bearings.
Key words: isotropic pyrographite, accelerated environmental tests, fluoroplastic, equivalent storage temperature, activation energy
Bibliography:
1. Vasilina V. G. et al. Autonomous Development Testing of LRPS Pneumohydraulic Supply Systems and Units. Kharkiv, 2005. 113 p.
2. Shaposhnikov V. A., Utkin V. F., Belyayev N. M. Evaluation of Rockets Guaranteed Service Life. М., 1967. 164 p.
3. GOST 9.707-81. Unified System of Corrosion and Ageing Protection. Polymer Materials. Methods of Accelerated Climatic Ageing Tests. М., 1990. 79 p.
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Keywords cloud
Investigation to Select Optimal Options of Replacing Raw Materials and Rubbers with Specifying Guaranteed Service and Storage Life of Rubber Products Being Components of Special Articles: Scientific–Technical Report DO-473-2002 UNUKTI DINTEM SE. Investigations to Select Optimal Options of Replacing Raw Materials and Rubbers with Specifying Guaranteed Service and Storage Life of Rubber Products Being Components of 11K77 Article: Scientific–Technical Report DO-468-2000, UNIKTI-DINTEM SE. Increasing Rubber Products Service Life in Conditions of Tropical Climate: Recommendation No.
]]>13. On Selection of Materials for Creation of Modern LV Thermostating System Mating Hoses
Organization:
Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1; State Enterprise DINTEM Ukrainian Research Design-Technological Institute of Elastomer Materials and Products2
Page: Kosm. teh. Raket. vooruž. 2018 (1); 72-84
DOI: https://doi.org/10.33136/stma2018.01.072
Language: Russian
Annotation: A series of materials is proposed for creation of space launch vehicle low-pressure air thermostating systems joints hoses. The topical issues are considered of materials designing with consideration for specific features of the hoses as special industrial rubber articles of launch vehicle launch sites.
Key words:
Bibliography:
1. Raw Stuff and Materials: Inf. Bull. М., 1999. No. 1. 44 p. https://doi.org/10.1007/978-1-4615-2802-9_3
2. Svitlichna R. F., Lotakov V. S., Chumicheva N. P. State and Prospects of Using Rubbers of New Generation in Rubber Industry of Ukraine: Scientific-Technical Report. К., 2001. No. 3. 13 p.
3. Nesterova L. A., Reznichenko S. V., Noskova L. F. et al. Experience of Using BNKS Paraffinate Nitrile Rubber in Formulations of Oil-Resistant Rubbers of Various Purpose at JSC “Uralsky Zavod RTI”. Med. Conf. on rubber: Collection of abstracts. М., 2000. No. 4. 121 p.
4. Investigation to Select Optimal Options of Replacing Raw Materials and Rubbers with Specifying Guaranteed Service and Storage Life of Rubber Products Being Components of Special Articles: Scientific–Technical Report DO-473-2002 UNUKTI DINTEM SE. 2002. 47 p.
5. Raw Stuff and Materials: Inf. Bull. М., 1999. No. 5. 55 p.
6. Raw Stuff and Materials: Inf. Bull. М., 2001. No. 3. 90 p.
7. Raw Stuff and Materials: Inf. Bull. М., 2001. No. 3. 96 p.
8. Raw Stuff and Materials: Inf. Bull. М., 2000. No. 3. 43 p.
9. Lotakov V. S., Yevchik V. S., Utlenko E. V. et al. Investigation of Operability of Rubbers with Adhesion Additives in Rubber-Metal Valves. Manufacture of Tires, Rubber Products and ATI. М., 1980. No. 4. P. 43-44.
10. Lotakov V. S., Yevchik V. S., Markova L. A. et al. Investigation of Alkali Impact on Adhesive Properties of Ethylene-Propylene Vulcanizing Agents. Caoutchouc and Rubber: Scientific–Technical Report. UNIKTI-DINTEM SE. 1981. No. 6. P. 18-19.
11. Svitlichna R. F., Bogutska E. O., Lotaakov V. S. et al. Technical Carbon of N Series. Prospects of Using in Rubber Mixtures of Caoutchoucs of New Generation: Scientific–Technical Report. К., 2006. No. 3. P. 17-20.
12. Yevchik V. S., Bogutskaya E. A., Khorolsky M. S. Investigations to Select Optimal Options of Replacing Raw Materials and Rubbers with Specifying Guaranteed Service and Storage Life of Rubber Products Being Components of 11K77 Article: Scientific–Technical Report DO-468-2000, UNIKTI-DINTEM SE. 2000. 55 p.
13. Nudelman Z. N., Lavrova L. N. Effective Vulcanization of Fluorine Rubbers. The III Ukr. International Scientific-Technical Conference of Rubber Industry Workers: Collection of abstracts. Dnepropetrovsk, 2000. 43 p.
14. Semyonov G. D., Yevchik V. S., Zaitseva T. P., Lotakov V. S. Prospects of Using New Vulcanizing Systems in Rubber Mixtures Based on Fluoroelastomers: Scientific–Technical Report. К., 2001. No. 3. 18 p.
15. Yevchik V. S., Zaitseva T. P., Khorolsky M. S. Investigations of Physical-Mechanical Characteristics of Rubbers Based on Caoutchoucs of New Generation: Scientific–Technical Report DO-387-89, DF VNIIEMI. Dnepropetrovsk, 2000. 61 p.
16. Belozerov N. V. Rubber Technology. М., 1979. 201 p.
17. Blokh G. A. Organic Rubber Vulcanization Accelerators. М.,1964. 156 p.
18. Big Reference Book of Rubber Industry Worker in 2 parts. Part 1. Rubbers and Ingredients / Under the general editorship of S. V. Reznichenko and Y. L. Morozov. М., 2012. 740 p.
19. Polyurethane Chemistry and Technology: Collection of conference papers. Manchester, 1967. 254 p.
20. Degteva T. G. et al. The Impact of Additives on Thermal Ageing of Rubbers and Model Gaskets Made of SKEP. Caoutchouc and Rubber. М., 1984. No. 8. P. 17-19.
21. Lepetov V. A. Rubber Products. L., 1976. 440 p.
22. Lepetov V. A., Yurtsev L. N. Calculations and Designing of Rubber Products and Production Accessories. М., 2009. 417 p.
23. New Prospective Hoses and Scarce and Commercially Inviable Rubbers, Ingredients and Materials: Recommendation No. 51-РМ-22/38/57/50-1050-83. М., 1983. 42 p.
24. Kornev A. E. et al. Technology of Elastomer Materials. М., 2009. 504 p.
25. Gerasimenko A. А. Protection of Machines from Biological Damages. M., 1984. 92 p.
26. Principles of Constructing Formulations and Using Rubbers for Rubber Products of Tropical Version: Recommendation No. 51-РМ-26-48-66. М., 1966. 56 p.
27. Assessment of Rubber Resistance to Damage by Thermites: Recommendation No. 51-РМ-4-622-75. М., 1975. 36 p.
28. Increasing Rubber Products Service Life in Conditions of Tropical Climate: Recommendation No. 51-РМ-4-697-76. М., 1976. 23 p.
29. Assessment of Rubber Resistance to Mould: Recommendation No. 51-РМ-4-407-73. М., 1976. 42 p.
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2018 (1); 63-68 DOI: https://doi.org/10.33136/stma2018.01.063 Language: Russian Annotation: Several measures to ensure long service life of electrochemical batteries are proposed: electrochemical battery performance evaluation, study of theoretical basis for improvement and building of experimental bench equipment. Development of Technique of Alkaline Nickel-Cadmium Accumulators Recovery to Prolong their Service Life.
]]>11. Ensuring Long Lifetime of the Electrochemical Accumulators Included in Space Rocketry Electric Power Supply Systems
Organization:
Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1; Kharkiv Aviation Institute, Kharkiv, Ukraine2 .
Page: Kosm. teh. Raket. vooruž. 2018 (1); 63-68
DOI: https://doi.org/10.33136/stma2018.01.063
Language: Russian
Annotation: Several measures to ensure long service life of electrochemical batteries are proposed: electrochemical battery performance evaluation, study of theoretical basis for improvement and building of experimental bench equipment.
Key words:
Bibliography:
1. Davidov А. О. Development of Technique of Alkaline Nickel-Cadmium Accumulators Recovery to Prolong their Service Life. Aerospace Hardware and Technology. 2009. No. 8 (65). P. 132-137.
2. Bezruchko K. V., Vasilenko A. S., Davidov A. О., Kharchenko А. А. Recovery of Open-Type Nickel-Cadmium Accumulators Capacity by Acting on Active Mass of Oxide-Nickel Electrode. Problems and Chemistry and Chemical Technology. 2002. No. 2. P. 66-70.
3. Azarnov A. L. et al. Express-Diagnostics Technique for Electrochemical Accumulators. The ХII International Scientific-Practical Youth Conference “Man and Space”: Collection of abstracts. Dnepropetrovsk, 2010. P. 78.
4. Bezruchko K. V., Davidov A. O. Express-Diagnostics Method for Electrochemical Energy Storage Units of Space Rocketry Power Systems. Space Technologies: Present and Future: The III International Conference: Collection of Abstracts (Dnepropetrovsk, 20-22 April, 2011). Dnepropetrovsk, 2011. P. 5-6.
5. Bezruchko K. V., Davidov A. O., Sinchenko S. V. Pulse Diagnostics Method for Nickel-Cadmium Accumulators. The V Scientific–Technical Conference “Present-Day Problems of Space Rocketry and Space Technologies”: Collection of abstracts. Kharkiv, 2010. P. 13.
6. Bezruchko K. V., Davidov A. O., Katorgina J. G., Sinchenko S. V., Shirinsky S. V. Method of Predicting the Performance of Electrochemical Batteries Working during Long Time in Space Rocketry Power Systems. Electrical and Electronic Engineering. 2013. Vol. 3 (3). P. 81-85.
7. Bezruchko K. V. et al. Development and Approbation of Mathematical Model to Predict the Characteristics of Electrochemical Accumulators of Space Rocketry Power Systems. MAI News. 2013, Vol. 20, No. 1. P. 38-49.
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Methodology of Normative Principles of Justification of Launch Vehicle Launching Facility Structures Lifetime Authors: Hudramovych V. 2019, (1); 28-37 DOI: https://doi.org/10.33136/stma2019.01.028 Language: Russian Annotation: This article contains results of methodology and standards development for life prediction of launch site structures to launch various types’ launch vehicles into near-earth orbit. It is noted that the physical nonlinearity of the material and statistical approaches determine the strength analysis of useful life. Service limit of launch site is suggested to be the critical time or the number of cycles (launches) over this period, after which the specified limiting states are achieved in the dangerous areas of the load-bearing elements: critical cracks, destruction, formation of unacceptable plastic deformations, buckling failure, corrosion propagation, etc.
]]>5. Methodology of Normative Principles of Justification of Launch Vehicle Launching Facility Structures Lifetime
Organization:
The Institute of Technical Mechanics, Dnipro, Ukraine1; Yangel Yuzhnoye State Design Office, Dnipro, Ukraine2; Oles Honchar Dnipro National University, Dnipro, Ukraine3
Page: Kosm. teh. Raket. vooruž. 2019, (1); 28-37
DOI: https://doi.org/10.33136/stma2019.01.028
Language: Russian
Annotation: This article contains results of methodology and standards development for life prediction of launch site structures to launch various types’ launch vehicles into near-earth orbit. Launch sites have been built in various countries of the world (European Union, India, China, Korea, Russia, USA, Ukraine, France, Japan, etc.). In different countries they have their own characteristics, depending on the type and performance of the launch vehicles, infrastructure features (geography of the site, nomenclature of the space objects, development level of rocket and space technology), problems that are solved during launches, etc. Solution of various issues, arising in the process of development of the standards for justification of launch site life is associated with the requirement to consider complex problems of strength and life of nonuniform structural elements of launch sites and structures of rocket and space technology. Launch sites are the combination of technologically and functionally interconnected mobile and fixed hardware, controls and facilities, designed to support and carry out all types of operations with integrated launch vehicles. Launch pad, consisting of the support frame, flue duct lining and embedded elements for frame mounting, is one of the principal components of the launcher and to a large extent defines the life of the launch site. Main achievements of Ukrainian scientists in the field of strength and life are specified, taking into account the specifics of various branches of technology. It is noted that the physical nonlinearity of the material and statistical approaches determine the strength analysis of useful life. Main methodological steps of launch site structures life prediction are defined. Service limit of launch site is suggested to be the critical time or the number of cycles (launches) over this period, after which the specified limiting states are achieved in the dangerous areas of the load-bearing elements: critical cracks, destruction, formation of unacceptable plastic deformations, buckling failure, corrosion propagation, etc. Classification of loads acting on the launch sites is given. The useful life of launch site is associated with estimation of the number of launches. Concept of low and multiple-cycle fatigue is used. Developing strength standards and useful life calculation basis, it is advisable to use modern methods of engineering diagnostics, in particular, holographic interferometry and acoustic emission, and to develop the high-speed circuits of numerical procedures for on-line calculations when testing the designed systems.
Key words: classification of loads and failures; shock wave, acoustic and thermal loads; low-cycle fatigue; hierarchical approach in classification; projection-iterative schemes of numerical procedur
Bibliography:
1. Vidy startovykh kompleksov: GP KB «Yuzhnoye»: Rezhim dostupa. http://www.yuzhnoe.com/presscenter/media/ photo/techique/launch-vehique.
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3. Prochnost’ materialov I konstruktsiy / Pod obsch. red. acad. NANU V. T. Troschenko. K.: Academperiodika, 2005.1088 p.
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5. Bigus G. A., Daniev Yu. F., Bystrova N. A., Galkin D. I. Osnovy diagnostiki technicheskykh ustroistv I sooruzheniy. M.: Izdatelstvo MVTU, 2018. 445 p.
6. Birger I. A., Shorr B. F., IosilevichG. B. Raschet na prochnost’ detaley machin: spravochnik. M.: Mashinostroenie, 1993. 640 p.
7. Hudramovich V. S. Ustoichivost’ uprugoplasticheskykh obolochek. K.: Nauk. dumka, 1987. 216 p.
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11. Hudramovich V. S., SIrenko V. N., Klimenko D. V., Daniev Yu. F. Stvorennya metodologii nornativnykh osnov rozrakhunku resursu konstruktsii startovykh sporud ksomichnykh raket-nosiiv / Teoria ta practika ratsionalnogo proektuvannya, vygotovlennya i ekspluatatsii machinobudivnykh konstruktsiy: materialy 6-oy Mizhnar. nauk.-techn. conf. (Lvyv, 2018). Lvyv: Kinpatri LTD, 2018. P. 5–7.
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26. Mesarovich M. Teoria ierarkhicheskykh mnogourovnevykh system/ M. Mesarovich, D. Makho, I. Tohakara / Per. s angl. M.: Mir, 1973. 344 p.
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Keywords cloud
2019, (1); 95-101 DOI: https://doi.org/10.33136/stma2019.01.096 Language: Russian Annotation: Service life (resource) of the device (system, structure, material) is one of the major factors, which defines the reliable performance of the device or necessity of its replacement. The purpose of this paper is to develop the engineering methodology to estimate the service life of the device to support the well-founded design decision-making. The methodology of estimation of the service life of material or structure is based on the generalization of great amount of Yuzhnoye SDO experimental data and theoretical research on the impact of various factors (properties of materials, loads, storage and operation conditions) on their service life on the ground of strength analysis. At the same time, service life definition is based on the results of stress and deformation analyses and their comparison with strength properties of the applied material (tensile strength and deformation properties).
]]>14. Technique of Determination of SRM Operational Life Taking into Account Materials and Elements Strength Margins
Organization:
Yangel Yuzhnoye State Design Office, Dnipro, Ukraine
Page: Kosm. teh. Raket. vooruž. 2019, (1); 95-101
DOI: https://doi.org/10.33136/stma2019.01.096
Language: Russian
Annotation: Service life (resource) of the device (system, structure, material) is one of the major factors, which defines the reliable performance of the device or necessity of its replacement. The purpose of this paper is to develop the engineering methodology to estimate the service life of the device to support the well-founded design decision-making. The methodology of estimation of the service life of material or structure is based on the generalization of great amount of Yuzhnoye SDO experimental data and theoretical research on the impact of various factors (properties of materials, loads, storage and operation conditions) on their service life on the ground of strength analysis. At the same time, service life definition is based on the results of stress and deformation analyses and their comparison with strength properties of the applied material (tensile strength and deformation properties). Strength properties of the material should be reduced to test conditions in terms of temperature, pressure, rate of loading, degrees of material aging etc. Methodology provides the estimation of safety margins in all phases of storage and operation of the device, consideration of the impact of the active factors (mass, temperature, loading, process of material aging), performance of calculations for the chosen specific zones of the device. It is shown that the service life estimation is in general case a probabilistic observation because of the random combination of the influencing factors (strength properties, storage and operation conditions, loads). Analysis of experimental and computation data as applied to solid-propellant rocket engine shows that the most dangerous zones, which define the service life, are the fuel charge channel (deformations at launch), a fuel-body coupling zone (breakaway coupling stress) and a “lock” zone of the release collar (concentration of shear and breakaway stresses and deformations). Developed methodological guidelines of the engineering estimate of the service life can be used as the computational basis for the service life of materials and structures in the phase of system design and updating of the assumed design solutions.
Key words: stress, deformation, service life, aging, load
Bibliography:
1. Lyashevskiy A. V., Mironov Ye. A., Vedernikov M. V. Prognozirovanie srokov prigodnosti tverdykh raketnykh topliv metodom Roentgen-computrnoy tomografii// Aviatsionnaya i raketno-kosmichaskaya technika. №2. 2015. P. 118-123.
2. Schubert H., Menke K. Service Life Determination of Rocket Motors by Comprehensive Property Analysis of Propellant Grain / Athens, Greece, May, 1996, Simposium. №41 P. 1-10.
3. Hufferd W. L. Service Life Assessment for Space Launch Vehicles / Athens, Greece, May, 1996, Simposium. №46. P. 1-9.
4. Faulkner G. S., Tod D. Service Life Prediction Methodologies Aspects of the TTCP KTA-14 UK Programme / Athens, Greece, May, 1996, Simposium. – №24. P. 1-13.
5. Francis E. C. (England), Busswell H. J. Improvements in Rocket Motor Service Life Prediction / Athens, Greece, May, 1996, Simposium. №27. P. 1-13.
6. Collingwood G. A., Dixon M. D., Clark L. M., Becker E. B. Solid Rocket Motor Service Life Prediction Using Nonlinear Viscoelastic Analysis and Probabilistic Approach / Athens, Greece, May, 1996, Simposium. №29. P. 1-8.
7. Zharkov A. S., Anisimov I. I., Maryash V. I. Physiko-chimichaskie process v izdeliyakh iz vysokoenergetycheskykh kondensirovannykh materialov pri dlitelnoy ekspluatatsii/ Physicheskaya mezomechanika. №9/4. 2006. P. 93-106.
8. Gul’ V. Ye. Struktura i prochnost’ polymerov. M.: Chimia, 1971. P. 10-23, 189-209.
9. Pavlov P. A. Osnovy engeneernykh raschetov elementov machin na ustalostnuyu i dlitelnuyu prochnost’. L.: Mashinostroenie, 1988. P. 65-70.
10. Ushkin N. P. Sposoby proektnoy otsenki resursa RDTT i obespechaniya ego dlitelnoy ekspluatatsii/ Kosmicheskaya technika. Raketnoye vooruzhenie: Sb. nauch.- techn. st. 2016. Vyp. 1. Dnepropetrovsk: GP KB «Yuzhnoye». P. 110-116.
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2016 (1); 110-116 Language: Russian Annotation: Based on generalization and analysis of Yuzhnoye SDO’s extensive experience of developing the SRM of various types, the dependences of their service life on main operative factors are determined. An algorithm of engineering evaluation of SRM service life is proposed and the recommendations were elaborated to ensure long operation of the motors.
]]>18. Method of Design Evaluation of SRM Lifetime and Ensuring its Long-Term Operation
Organization:
Yangel Yuzhnoye State Design Office, Dnipro, Ukraine
Page: Kosm. teh. Raket. vooruž. 2016 (1); 110-116
Language: Russian
Annotation: Based on generalization and analysis of Yuzhnoye SDO’s extensive experience of developing the SRM of various types, the dependences of their service life on main operative factors are determined. The techniques of engineering evaluation of operability margin of newly developed SRM are considered based on the methods of taking into account the breaking stresses and accumulation of damages (breaking deformations). An algorithm of engineering evaluation of SRM service life is proposed and the recommendations were elaborated to ensure long operation of the motors.
Key words:
Bibliography:
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