Search Results for “performance” – Collected book of scientific-technical articles

11.1.2024 PARAMETERS CALCULATION OF THE LUNAR REGOLITH TRANSPORT SYSTEM

manager — Mon, 17 Jun 2024 08:41:21 +0000

11. Parameters calculation of the lunar regolith transport system

Authors:

Semenenko Ye. V.¹, Biliaiev M. M.², Semenenko P. V.³

Organization:

National Academy of Sciences of Ukraine, M.S. Poliakov Institute of geotechnical mechanics¹; Ukrainian State University of Science and Technologies²; Yangel Yuzhnoye State Design Office, Dnipro, Ukraine³

Page: Kosm. teh. Raket. vooruž. 2024, (1); 93-101

DOI: https://doi.org/10.33136/stma2024.01.093

Language: Ukrainian

Annotation: The objective of this article is to develop a scientifically proven method of calculation of the auger conveyor parameters, such as the conveyor capacity and the corresponding power of the electrical motor, for different densities and porosities of conveyed materials, the geometrical parameters of the auger, and the specificity of the gravitational fields at the place of transportation. Another objective is to investigate potential limitations of the auger parameters when transporting lunar regolith. To reach these objectives, the known relations for calculating the auger conveyor parameters were applied, as well as the fundamental laws of the granular media mechanics, the principal equations of asynchronous motor electrodynamics, and the behavior of granular media when moving it with the auger conveyor, experimentally studied by the domestic authors. It gave the possibility, for the first time for the lunar environment, to suggest a procedure to calculate the auger conveyor parameters, such as the conveyor capacity and the corresponding power of the electric motor, using known geometrical parameters of the mainline and pipeline, the auger conveyor filling ratio and the parameters of the selected electrical motor. It gave the possibilities to study how the filling ratio of the auger conveyor influences its principal performance parameters and determine potential limitations of the geometrical parameters and the filling ratios of auger conveyors according to the parameters and features of the selected electrical motor. The allowable transportation distances, diameters, other geometrical parameters of auger conveyors, and conveyor filling ratios with the selected electrical motor have been determined. It has been proven that the solutions based on using auger conveyors would be most rational for transporting loose lunar regolith over the Moon’s surface because the auger conveyors are compact and adaptable, and they can be placed inside tubes and laid under the day surface, thereby ensuring the continuous transportation process. Furthermore, they are capable of autonomous operation and can use the electricity produced by solar arrays.

Key words: Moon, regolith, auger, electric motor, capacity, power

Bibliography:

1. Pustovgarov A. A., Osinoviy G. G. Kontseptsiya shlyuzovogo modulya misyachnoi bazy. ХХV Mizhnarodna molodizhna naukovo-praktychna conf. «Lyudyna i cosmos». Zbirnyk tez, NTsAOM, Dnipro, 2023. S. 86 – 87.
2. Semenenko P. V. Sposoby transortirovki poleznykh iskopaemykh ot mesta ikh dobychi k mestu pererabotki v lunnykh usloviyukh. P. V. Semenenko, D. G. Groshelev, G. G. Osinoviy, Ye. V. Semenenko, N. V. Osadchaya. XVII conf. molodykh vchenykh «Geotechnichni problemy rozrobky rodovysch». m. Dnipro, 24 zhovtnya 2019 r. S. 7.
3. Berdnik A. I. Mnogorazoviy lunniy lander. A. I. Berdnyk, M. D. Kalyapin, Yu. A. Lysenko, T. K. Bugaenko. Raketno-kosmichny complexy. 2019. T. 25. №5:3-10. ISSN 1561-8889. https://doi.org/10.15407/knit2019.05.003
4. Semenenko Ye. V., Osadchaya N. V. Traditsionnye i netraditsionnye vydy energii, a takzhe kosmicheskie poleznye iskopaemye v okolozemnom prostranstve. Nauch.-parakt. conf. «Sovremennye raschetno-experimentalnye metody opredeleniya characteristic raketno-kosmicheskoy techniki». m. Dnipro, 10 – 12 grudnya 2019 r. S. 62 – 63.
5. Komatsu pobudue excavator dlya roboty na Misyatsi https://www.autocentre.ua/ua/ news/concept/komatsu-postroit-ekskavator-dlya-raboty-na-lune-1380272.html.
6. Help NASA Design a Robot to Dig on the Moon https://www.nasa.gov/directorates/ stmd/help-nasa-design-a-robot-to-dig-on-the-moon/
7. Robert E. Grimm. Geophysical constaints on the lunar Procellarum KREEP Terrane. Vol. 118, Issue 4. April 2013. P. 768-778. https://agupubs-onlinelibrary-wiley-com.translate. goog/doi/10.1029/2012JE004114?_x_tr_sl=en&_x_tr_tl=ru&_x_tr_hl=ru&_x_tr_pto=sc
https://doi.org/10.1029/2012JE004114
8. Chen Li. A novel strategy to extract lunar mare KREEP-rich metal resources using a silicon collector. Kuixian Wei, Yang Li, Wenhui Ma, Yun Lei, Han Yu, Jianzhong Liu. Journal of Rare Earths Vol. 41, Issue 9, September 2023, P. 1429-1436. https://www-sciencedirect-com.translate.goog/science/article/ abs/pii/S1002072122001910?_x_tr_sl=en&_x_tr_tl=ru&_x_tr_hl=ru&_x_tr_pto=sc https://doi. org/10.1016/j.jre.2022.07.002
9. Moon Village Association https://moon-villageassociation.org/about/
10. GLOBAL MOON VILLAGE. https://space-architect.org/portfolio-item/ global-moon-village//
11. Just G. H. Parametric review of existing regolith excavation techniques for lunar In Situ Resource Utilization (ISRU) and recommendations for future excavation experiments. G. H. Just, Smith K., Joy K. H., Roy M. J. https://doi.org/10.1016/j.pss.2019.104746
https://www.sciencedirect.com/science/article/pii/S003206331930162X
12. Anthony J. Analysis of Lunar Regolith Thermal Energy Storage. Anthony J. Colozza Sverdrup Technology, Inc. Lewis Research Center Group Brook Park, Ohio NASA Contractor Report 189073. November 1991. S-9 https://denning.atmos.colostate.edu/readings/ lunar.regolith.heat.transfer.pdf
13. Obgruntuvannya vykorystannya shneka dlya utilizatsii vidkhodiv vuglezbagachennya z mozhlyvistyu pidvyschennya bezpeki energetychnoi systemy pidpriemstv. SLobodyannikova I. L., Podolyak K. K., Tepla T. D. Materialy XХІ Mizhnarod. conf. molodykh vchennykh (26 zhovt. 2023 roku, m. Dnipro). Dnipro: IGTM im. M.S. Polyakova NAN Ukrainy, 2023. S. 50–55.
14. Kulikivskiy V. L., Paliychuk V. K., Borovskiy V. M. Doslidzhennya travmuvannya zerna gvintovym konveerom. Konstryuvannya, vyrobnitstvo ta exspluatatsiya silskogospodarskykh mashin. 2016. Vyp. 46. S. 160 – 165. https://doi.org/10.3233/EPL-46204
14. Lyubin M. V., Tokarchuk O. A., Yaropud V. M. Osoblyvosti roboty krutopokhylennykh gvyntovykh transporterov pri peremischenni zernovoi produktsii. Tekhnika, energetika, transport APK. 216. № 3(95). S. 235 – 240.
15. Gevko R. B., Vitroviy A. O., Pik A. I. Pidvyschennya tekhnichnogo rivnya gnuchkykh gvyntovykh konveeriv. Ternopil: Aston, 2012. 204 s.
16. Bulgakov B. M., Adamchyuk V. V., Nadikto V. T., Trokhanyak O. M. Teoretichne obgruntuvannya parametriv gnuchkogo gvintovogo konveera dlya transportuvannya zernovykh materialiv. Visnyk agrarnoi nauki. 2023. № 4(841). S. 59 – 66.
17. New Views of the moon. Reviews in mineralogy and geochemistry. Eds. Joliff B.L., Wieczorek M.A., Shearer C.K., Neal C.R. Mineralogical Society of America. Reviews in mineralogy and geochemistry. 2006. Vol. 60. 721 p. DOI: 10.2138/rmg.2006.60.
18. Semenenko Ye. V. Nauchnye osnovy technologiy hydromechanizatsii otkrytoy razrabotki titan-cyrkonovykh rossypey. Yevgeniy Vladimirovich Semenenko. Kiev: Nauk. dumka, 2011. 232 s.

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14.1.2024 EXPERIMENTAL STUDIES OF THE PERFORMANCE OF PYROTECHNIC DEVICES INSTALLED ON THE LAUNCH VEHICLE SEPARATION SYSTEMS

manager — Mon, 17 Jun 2024 07:52:20 +0000

14. Experimental studies of the performance of pyrotechnic devices installed on the launch vehicle separation systems

Автори: Bolyubash Ye. S.

Organization: Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2024, (1); 121-128

DOI: https://doi.org/10.33136/stma2024.01.121

Language: Ukrainian

Annotation: Pyrotechnic devices are important elements in rocket and space technology, which to a large degree determine the flight success of the launch vehicles, since they enable instantaneous operations to separate spent stages, change configurations, ensure safety, etc. Pyrotechnic devices are subject to strict requirements for reliability, safety, security and efficiency. The article presents an experimental study of the performance of a linear shaped charge of a launch vehicle stage separation system. This type of linear shaped charge is one of the most common types of linear shaped charge, which are used in launch vehicle separation systems being developed in Ukraine. One of the main characteristics of the linear shaped charge, which determines the efficiency and reliability of the separation process, is the depth of penetration of the cumulative jet into the obstacle. The work studied the effect of a cumulative jet of a linear shaped charge with a semi-cylindrical cumulative part. An experimental confirmation of the performance of this type of linear shaped charge is presented, using the example of a linear shaped charge with a diameter of 5 mm, acting on an obstacle made of aluminum alloy grade 2219. The research methodology, experimental scenario, in particular, a description of the research object and a scheme for measuring test results are presented. Depth of cumulative jet penetration into the obstacle was measured in 60 points along the cut line of the samples under study. A statistical analysis of the experimental results was carried out, in particular, the average penetration depth was determined. An improved formula is proposed for the practical calculation of the penetration depth of a cumulative jet for a linear shaped charge with a semi-cylindrical cumulative part, using an additional correction factor. It is noted that the depth of penetration of a cumulative jet into an obstacle is significantly influenced by technological aspects. Taking into account this influence, the lower limit of the one-sided tolerance interval was determined. Recommendations are provided to improve future experimental procedures. Based on the obtained results, it was established that the linear shaped charges under study are operational and meet the requirements for linear shaped charges, installed on launch vehicle separation systems.

Key words: cumulative effect, shaped charge, linear shaped charge, separation systems, pyrotechnic separation devices, linear shaped charge parameters.

Bibliography:

Petushkov V. G. Pod red. B.Ye.Patona, Priminenie vzryva v svarochnoy technike, K.: Nauk. dumka, 2005, 754 s.
Physika vzryva. Izd. tretie, t. ІІ. Pod red. L. P. Orlenko. Nauka, 2004, 644 s.
Baum F. A., Stanyukovich K. P., Shekhter B. I. Physika vzryva. Gos. izd. FM lit. M. 1959, 800 s.
Kolesnikov K. S., Kozlov V. I., Kokushkin V. V. Dynamika razdeleniya stupeney letatelnykh apparatov. M.: Mashinostroenie. 1977, 224 s.
Kumulyativniy efect ta iogo vykorystannya dlya rozdilennya raketno-kosmichnykh elementiv za dopomogou pyrotechnichnykh prystroiv. Ye. S. Bolyubash. Materialy XVII naukovykh chytan’ «Dniprovska orbita – 2022» (26–28 zhovtnya). Dnipro, 2022. 263 s.
ISO 16269-6:2003 Statistical interpretation of data – Part 6: Determination of statistical tolerance intervals (IDT).
Kobzar A. N. Prikladnaya matematicheskaya statistika. Dlya inzhenerov i nauchnykh rabotnikov. M.: Phizmatlit, 2006, 816 s.

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15.1.2024 Enhancing operability of the fuel system units in the hot climate conditions

manager — Mon, 17 Jun 2024 07:43:36 +0000

15. Enhancing operability of the fuel system units in the hot climate conditions

Authors:

Udod A. M.¹, Skokov O. I.¹, Volovschikova V. V.¹, Shepel S. V.², Litvinova M. V.², Steshenko K. A.¹

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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3.1.2024 Future projects of lunar exploration implemented by Yuzhnoye SDO

manager — Wed, 12 Jun 2024 15:28:59 +0000

3. Future projects of lunar exploration implemented by Yuzhnoye SDO

Authors:

Husarova I. O., Lysenko Yu. O., Osinovyi G. G.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2024, (1); 19-28

DOI: https://doi.org/10.33136/stma2024.01.019

Language: English

Annotation: Over the past years, the leading space powers have been returning to the idea of expeditions to the Moon and actively designing and manufacturing components for inhabited lunar bases. Yuzhnoye State Design Office has its own concept of a lunar base and, of course, cannot stand aside from the solution of scientific and technical problems related to the Moon exploration. Specialists of Yuzhnoye SDO completed conceptual development of a significant range of technologies required for the Moon exploration: a space transportation system for lunar expeditions; landers to deliver payloads to the surface of the Moon and transport experimental equipment; mobile laboratories; a reconnaissance rover to provide reconnaissance missions on the surface of the Moon; vehicles to provide lifting and transport, assembly and construction, production and technological and soil extraction work on the surface of the Moon; habitat units and other elements of the lunar infrastructure. Taking into account the high costs of lunar exploration, it is clear that international cooperation is the most realistic scenario for Yuzhnoye SDO to participate in the exploration. The U.S. lunar program is the most attractive. Private companies that NASA selects for the lunar programs can become partners of Yuzhnoye. With a view to ensuring the participation of Yuzhnoye SDO in international programs, the current state of global technologies for the Moon exploration was analyzed and opportunities to promote technologies developed by Ukrainian specialists on the international market of space technologies were identified based on the analysis. Taking into account the high level of technologies developed by the potential partners, it is proposed for the first time to consider it advisable to promote Yuzhnoye’s technologies with TRL 6–9 which have already been successfully tested and the innovative technologies developed by the company which have no analogues in the world or surpass the world level in terms of their technological and economic performance. Based on the analysis of the Lunar Industrial & Research Base conceptual design, such technologies may include rocket propulsion, units and assemblies of liquid-propellant propulsion (TRL 6–9), as well as future designs such as a hydrogen energy accumulator and inert anodes made of ultra-high-temperature ceramics for electrolysis of regolith melts.

Key words: rocket propulsion, hydrogen energy accumulator, inert anodes.

Bibliography:

1. Rosiya vtratyla “Lunu-25”, India uspishno zavershyla misiu. Chomu krainy ponovyly gonku za resursy Misyatsa? 23 serpnya 2023. https://www.epravda.com.ua/publications/2023/08/23/703510 (Russia lost Luna-25, India successfully completed the mission. Why have countries renewed the race for lunar resources? August 23, 2023. In Ukrainian)

2. Creech S, Guidi J, Elburn D. Artemis: An overview of NASA’s activities to return humans to the Moon. Paper presented at: 2022 IEEE Aerospace Conference (AERO); 2022 Mar 05-12; Big Sky, Montana.
https://doi.org/10.1109/AERO53065.2022.9843277

3. In-Situ Resource Utilization (ISRU) Demonstration Mission, 2019. https://exploration.esa.int/web/moon/-/60127-in-situ-resource-utilisation-demonstration-mission.

4. Peng Zhang, Wei Dai, Ran Niu, Guang Zhang, +12 authors. Overview of the Lunar In Situ Resource Utilization Techniques for Future Lunar Missions. Journal Space: Science & Technology. 2023, Vol. 3, Р. 1-18. Article ID: 0037. DOI: 10.34133/space.0037
https://doi.org/10.34133/space.0037

5. Lin XU, Hui LI, Pei Z, Zou Y, Wang C. A brief introduction to the International Lunar Research Station Program and the Interstellar Express Mission. Chinese J Space Sci. 2022;42(4):511-513.
https://doi.org/10.11728/cjss2022.04.yg28

6. Li C, Wang C, Wei Y, Lin Y. China’s present and future lunar exploration program. Science. 2019;365(6450):238-239.
https://doi.org/10.1126/science.aax9908

7. Ukrinform, 09 sichnya 2024, https://www.ukrinform.ua/rubric-technology/3804665-aponskij-zond-uvijsov-do-orbiti-misaca-pered-posadkou.html (Ukrinform, January 9, 2024. In Ukrainian).

8. Nimechina priednalasya do programmy vyvchennya Misyatsa Artemis, 15.09.2023, https://www.dw.com/uk/nimeccina-priednalas-do-programi-vivcenna-misaca-artemis/a-66826693 (Germany joined the Artemis moon exploration program, September 15, 2023. In Ukrainian).

9. Grigoriev O. N., Frolov G. A., Evdokimenko Yu. I., Kisel’ V. M., Panasyuk A. D., Melakh L. M., Kotenko V. A., Koroteev A. V. Ultravysokotemperaturnaya keramika dlya aviatsionno-kosmicheskoy techniki, Aviatsionno-kosmicheskaya technika i technologiya, 2012, No 8 (95), st.119-128 (O.N. Grigoriev, G.A. Frolov, Yu.I. Evdokimenko, V.M. Kisel, A.D. Panasyuk, L.M. Melakh, V.A. Kotenko, A.V. Koroteev. Ultra-high-temperature ceramics for aerospace engineering, Aerospace engineering and technology, 2012, No. 8 (95), Р. 119-128. In Russian).

10. Grigoriev O. N. et al. Oxidation of ZrB2-SiC-ZrSi2 ceramics in oxygen. Journal of the European Ceramic Society 30 (2010). 2397-2405.
https://doi.org/10.1016/j.jeurceramsoc.2010.03.016

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10.2.2019 Dynamic performance of the gas drive with jet motor

Вацлав Самусевич — Tue, 03 Oct 2023 11:52:15 +0000

10. Dynamic performance of the gas drive with jet motor

Authors:

Oliinyk V. P., Kaluger L. G.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2019, (2); 71-79

DOI: https://doi.org/10.33136/stma2019.02.071

Language: Russian

Annotation: The use of servo drives on flying vehicles determines the requirements to their dynamic characteristics. The problems of dynamics of drive with jet motor are not practically covered in publications. The task arises of selection of structure and parameters of devices consisting of several subsystems whose dynamic characteristics must be brought into agreement with each other in optimal way. The purpose of this work is to develop mathematical dependences for calculation of dynamic characteristics. The functional arrangement of the drive is considered consisting of jet motor based on Segner wheel with de Laval nozzle, mechanical transmission, pneumatic distributing device – jet pipe controlled by electromechanical converter. The layout is presented of mechanical segment of servo drive with jet motor with screw-nut transmission. The dynamic model is presented and the algebraic relations to determine natural frequencies of the drive are given. The motion equations of output rod at full composition of load are given. Using Lagrange transformation as applied to ball screw transmission, the expression for reduced mass of output element was derived. The reduced mass of load depends on the jet motor design and exerts basic influence on the drive’s natural frequencies. The evaluation is given of reduced mass change from the jet motor moment of inertia and reducer transmission coefficient. Based on the proposed algorithms, the dynamic characteristics of servo drive were constructed: transient process and amplitude-frequency characteristic. The drive has relatively low pass band, which is explained by the value of reduced mass of load.

Key words: pneumatic drive, functional arrangement, hydrodynamic force, reduced mass, Lagrange transformations, ball screw transmission, transient process, frequency characteristic

Bibliography:

1. Pnevmoprivod system upravleniya letatelnykh apparatov /V. A. Chaschin, O. T. Kamladze, A. B. Kondratiev at al. M., 1987. 248 s.

2. Berezhnoy A. S. Sovershenstvovanie rabochikh characteristic struino-reaktivnogo pnevmoagregata na osnove utochneniya modeli rabochego processa: dis. cand. techn. nauk: 05.05.17. Zaschischena 03.10.14. Sumy, 2014. 157 s.

3. Oleinik V. P., Yelanskiy Yu. A., Kovalenko V. N. et al. Staticheskie characteristiki gazovogo privoda so struinym dvigatelem /Kosmicheskaya technika. Raketnoe vooruzhenie: Sb. nauch.-techn. st. 2016. Vyp. 2. S. 21-27.

4. Abramovich G. N. Prikladnaya gazovaya dynamika. M., 1976. 888 s.

5. Strutinskiy V. B. Matematichne modelyuvannya processiv ta system mechaniki. Zhitomir, 2001. 612 s.

6. Shalamov A. V., Mazein P. G. Dynamicheskaya model’ sharikovintovoi pary/ Izv. Chelyabinskogo nauchnogo centra UrO RAN. №4. Chelyabinsk, 2002. S.161-170.

7. Kripa K.Varanasi, Samir A. Nayfer. The Dynamics of Lead-Screw Drivers: Low-Order Modeling and Experiments /Journal of Dynamic System, Measurement and Control. June 2004. Vol. 126. P. 388-395. https://doi.org/10.1115/1.1771690

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12.1.2017 Static Performance Prediction of Hot-Gas Flapper-Nozzle Actuator

manager — Fri, 22 Sep 2023 15:14:35 +0000

12. Static Performance Prediction of Hot-Gas Flapper-Nozzle Actuator

Authors:

Tsyganov V. M.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2017 (1); 78-83

Language: Russian

Annotation: The basic mathematical relations are considered to construct static characteristics of nozzle-shutter twostage piston pneumatic drive with the working medium – powder combustion products.

Key words:

Bibliography:

1. Oleinik V. P. et al. Static Characteristics of Gas Drive with Jet Engine / V. P. Oleinik, Y. A. Yelansky, V. N. Kovalenko, L. G. Kaluger, Е. V. Vnukov. Space Technology. Missile Armaments: Collection of scientific-technical articles. 2015. Issue. 1. P. 21-27.

2. Kornilov Y. G. et al. Pneumatic Elements and Systems. К., 1968. 143 p.

3. Hydraulic and Pneumatic Power Control System / Under the editorship of J. Blackborn, H. Reethoff, G. L. Sherer. М., 1962. 614 p.

4. Mertaf S. A. Tutorial on the Theory of Electrohydraulic Servo Mechanism with Acceleration Control Operating in Switchover Mode. Problems of Rocket Engineering. 1961. No. 2. P. 74-95.

5. Banshtyk A. М. Electrohydraulic Servo Mechanisms with Pulse-Width Control. М., 1972. 144 p.

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21.1.2020 Contemporary approaches to the improvement of methods of space launch system operation for commercial launches of ILV

Вацлав Самусевич — Wed, 13 Sep 2023 12:05:46 +0000

21. Contemporary approaches to the improvement of methods of space launch system operation for commercial launches of ILV

Authors:

Hlechkov V. H.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2020, (1); 184-192

DOI: https://doi.org/10.33136/stma2020.01.184

Language: Russian

Annotation: The article deals with the problems of applying new approaches to formation and improvement of operation system. Turning of space hardware and services into marketable commodity requires their new qualities that determine competitiveness. The main task of presented works was approbation of new approaches to improvement of space launch systems operation quality and operation process effectiveness by the example of prospective Cyclone-4M space rocket complex. The works to form and improve its operation system were performed using the methods based on general theory of space systems operation and the pocedures based on the results of research work conducted by Yuzhnoye SDO in 2015 for analytical evaluation of launch services costs. The topicality of the article is confirmed by the results of practical application of new approaches in main directions of Cyclone-4M space rocket complex operation system improvement, which allowed increasing commercial attractibility of Yuzhnoye SDO-developed systems due to reduction of direct recurring costs and annual expenses. The article describes the course of development of operation model of a created object; based on investigation of the processes of this model, the object’s performance characteristics are detemined. The basis of the article are the organizational-and-technical decisions used herewith and the results obtained for Cyclone-4M space rocket complex. The article is of practical interest for specialists involved in creation of space rocket complexes and other sophisticated systems where the operation system is a multi-level organizational-technical system.

Key words: space hardware, launch services, performance characteristics, operation model, organizational-and-technical decisions

Bibliography:

1. Analiticheskaia otsenka ob’ema rabot i zatrat na puskovye uslugi i napravleniia rabot dlia ikh snizheniia v perspektivnykh RKK razrabotki GP “KB “Yuzhnoye”: tekhn. otchet / GP “KB “Yuzhnoye”. Dnepropetrovsk, 2015. 344 s.

2. Teoriia i praktika ekspluatatsii ob’ektov kosmicheskoi infrastruktury: monografiia / N. D. Anikeichik i dr. SPb., 2006. Т. 1: Ob’ekty kosmicheskoi infrastruktury. 400 s.

3. Ispytaniia i ekspluatatsiia raketnykh kompleksov: kurs lektsii / А. V. Agarkov i dr.; pod red. А. V. Degtyareva. GP “KB “Yuzhnoye”. Dnipro, 2016. Kn. 1. 505 s.

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8.1.2020 Determining the main parameters of transport aircraft modifications considering the fuel efficiency

Вацлав Самусевич — Wed, 13 Sep 2023 10:34:58 +0000

8. Determining the main parameters of transport aircraft modifications considering the fuel efficiency

Authors:

Los’ O. V.

Organization:

Antоnov Company, Kyiv, Ukraine

Page: Kosm. teh. Raket. vooruž. 2020, (1); 85-89

DOI: https://doi.org/10.33136/stma2020.01.085

Language: Russian

Annotation: The main parameters are understood as: carrying capacity mг, range L and fuel efficiency qт, which largely determine the competitiveness of aircraft of this type, including military transport aircraft. The reason for the creation of modifications of transport category aircraft is the requirement for a constant increase in their flight performance by increasing the carrying capacity and range. Among the main goals of implementing such decisions there is an indispensable increase in the fuel efficiency of modifications, since the cost of fuel reaches 80 % of the cost of an airplane hour during operation. There are a number of models that make it possible to assess the influence of the weight and aerodynamic parameters of the airframe of the aircraft and the fuel performance of the power plant (specific engine consumption) on the integral indicator of the fuel efficiency of the modification at cruising mode and the average hourly fuel consumption at the certification stage, when all parameters of the airframe and engine are fixed and consideration of options is not possible. A new model is proposed for the stage of designing modifications, in which deep modification changes are made in the geometry of wing and in the power plant with various variants of their correlation and coordination. The parameters of new model: specific fuel efficiency – specific route productivity, in order to form the relative carrying capacity and relative range of action for the required specific fuel efficiency. An analysis of such dependencies showed: – with an increase in relative range L , fuel costs per flight also increase; – the adequacy of changes in route performance is observed only at L < 0.5. At L > 0.5 productivity is constantly decreasing, while the specific indicator of fuel consumption per unit of work increases exponentially; – if in the analysis we take into account the specific value of transport efficiency, that is, the characteristic “load – range” ( mп.н  f L ), it becomes obvious that the most favorable (from the point of view of fuel efficiency) are relative ranges of 0,3 < L < 0,5. In this range L , not only acceptable fuel efficiency values are realized, but also the maximum value of the route performance, that is the main parameters for which modifications are developed.

Key words: productivity, carrying capacity, fuel efficiency, parameter formation

Bibliography:

1. Balabuev P. V. Osnovy obshchego proektirovaniia samoletov s gazoturbinnymi dvigateliami. Kharkiv, 2003. Ch. 2. 389 s.

2. Yugov О. K. Soglasovanie kharakteristik samoleta i dvigatelia. 1975. 204 s.; 2-е izd., 1980. 200 s.

3. Korol’ V. N. Kontseptsiia sozdaniia mezhdunarodnogo konsortsiuma “Srednii transportnyi samolet”. Voprosy proektirovaniia i proizvodstva konstruktsii letalelnykh apparatov. Kharkiv, 2002. Vyp. 30(3). S. 6-27.

4. Global Market Forecast. Future Journeys 2013 – 2020 / AIRBUS S.A.S Blagnac Cedex: Art @ Caractere, 2013. 125 p. [electronic resource]. Access mode: http://www.airbus.com/company/market/forecast/elD=dam.

5. 747-400 Freighter Main deck cargo arrangements. Boeing, 2010 10 p. [electronic resource]. Access mode: http://www.boeing.com.

6. 6. ICAO. 3.2bn passengers used air transport in 2014. [electronic resource]. Access mode: http://www.aviatime.com/-en/airports/airports-news.

7. An-188. Srednii voenno-ttansportnyi samolet ukorochennogo vzleta i posadki. Kyiv, 2018. S. 118.

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14.2.2018 A Concept of Modular Transport Vehicle for Lunar Program

Вацлав Самусевич — Thu, 07 Sep 2023 12:03:20 +0000

14. A Concept of Modular Transport Vehicle for Lunar Program

Authors:

Psaryov A. I.¹, Yerofeyev S. I.¹, Nazarets V. S.²

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine¹; National metallurgical academy of Ukraine, Dnipro, Ukraine²

Page: Kosm. teh. Raket. vooruž. 2018 (2); 127-131

DOI: https://doi.org/10.33136/stma2018.02.127

Language: Russian

Annotation: The conceptual engineering solution was examined to increase the unification and interchangeability of components in a vehicle that can regularly transport cargo and be operationally adapted to solving various problems on the surface of different planets. The difference between this engineering solution and the existing designs of planetary roving vehicles was described. The objective is achieved by assembling a selfpropelled modular platform from generic modules that are rigidly joined with each other to create a unified control system and a unified power supply system for the platform. The number of modules is chosen depending on the objective and equipment installed on the platform. Self-propelled modular platform can function as a unified remote-controlled unit with capability to adapt operationally to solving new problems on the surface of various planets. Novelty of the modular vehicle concept lies in creation of the generic vehicle that is capable of being rebuilt depending on the functional task and can be delivered by parts to the site of its direct operation.

Key words: planetary roving vehicle, self-propelled modular platform, generic module, interchangeability

Bibliography:

1. Semi-closed split type manned lunar vehicle: Patent CN204452956 China: MPK B64G 1/16 / Shanghai aerospace system engineering institute. Published 08.07.2015.

2. Layout-optimized manned lunar vehicle: Patent CN204452955 China: MPK B64G 1/16. / Shanghai aerospace system engineering institute. Published 08.07.2015.

3. Patent CN104002615 China, MPK B60B 15/02. Lunar surface rover wheel pawl resistant to abrasion and high in road holding / Shanghai aerospace system engineering institute. Published 27.08.2014.

4. High-performance screen wheel: Patent CN103660778 China: MPK B60B 19/00 / Shanghai aerospace system engineering institute. Published 26.03.2014.

5. Wheeled Transport Vehicle: Patent RU2178752 RF, MPK B62D61/12 / OJSC “All-Russian Research Institute of Transport Machine-Building”. Published 27.01.2002.

6. Articulated All-Wheel-Drive Transport Vehicle and Method to Change its Motion Direction: Patent RU2019463 RF: MPK B62D57/02 / OJSC “All-Russian Research Institute of Transport Machine-Building”. Published 15.09.1994.

7. Articulated Transport Vehicle: Patent RU2047531 RF, MPK B62D53/02 / OJSC “Avtocenter-Tollyatti-VAZ”. Published 10.11.1995.

8. Transport Vehicle: Patent RU2198108 RF, MPK B62D53/00 / Anfinogenov V. M., Bitsugov I. V., Mar’in V. V., Mukhin V. I., Pisarenko V. N., Risnik V. V.

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10.2.2018 Calculation of Gas Flow in High-Altitude Engine Nozzle and Experience of Using Water-Cooled Nozzle Head during Tests

Вацлав Самусевич — Thu, 07 Sep 2023 11:29:45 +0000

10. Calculation of Gas Flow in High-Altitude Engine Nozzle and Experience of Using Water-Cooled Nozzle Head during Tests

Authors:

Nikitenko K. O.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2018 (2); 83-93

DOI: https://doi.org/10.33136/stma2018.02.083

Language: Russian

Annotation: At Yuzhnoye State Design Office, the Cyclone-4 launch vehicle 3rd stage engine has been developed and is under testing. For adjustment of the engine and test bench systems, in the first firing tests the radiation-cooled nozzle extension was replaced with a steel water-cooled one. It was planned to start the engine with water-cooled nozzle extension without vacuumizing and without gad dynamic pipe, which conditioned operation with flow separation at the output edge of water-cooled nozzle extension. Therefore, the calculation of flow in the nozzle with water-cooled extension, flow separation place, and thermal load on watercooled nozzle extension during operation in ground conditions is an important task. Selection of turbulent flow model has a noticeable impact on prediction of flow characteristics. The gas dynamic analysis of the nozzle with water-cooled extension showed the importance of using the turbulent flow model k-ω SST for the flows with internal separation of boundary layer and with flow separation at nozzle section. The use the flow model k-ω SST for calculation of nozzle with flow separation or with internal transitional layer allows adequately describing the flow pattern, though, as the comparison with experimental data showed, this model predicts later flow separation from the wall than that obtained in the tests. The calculation allows obtaining a temperature profile of the wall and providing the recommendations for selection of pressure measurement place in the nozzle extension for the purpose of reducing sensors indication error. With consideration for the special nature of the nozzle extension wall temperature field, the cooling mode was selected. The tests of RD861K engine nozzle with water-cooled extension allow speaking about its successful use as a required element for testing engine start and operation in ground conditions without additional test bench equipment.

Key words: turbulent flow, flow separation, cooling, technological extension

Bibliography:

1. Massiet P., Rocheque E. Experimental Investigation of Exhaust Diffusors for Rocket Engines. Investigation of Liquid Rocket Engines. М., 1964. P. 96-109.

2. Mezhevov A. V., Skoromnov V. I., Kozlov A. V. et al. Introduction of Radiation Cooling Nozzle Head of Made of Carbon-Carbon Composite Material on DM-SL Upper Stage 11D58M Main Engine. News of Samara Aerospace University. No. 2 (10). 2006. P. 260-264.

3. Fluent. Software Package, Ver. 6.2.16, Fluent Inc., Lebanon, NH, 2004.

4. Wilcox D. C. Turbulence Modeling for CFD. DCW Industries, Inc. La Canada, California, 1998. 460 р.

5. Andersen D., Tannehill J., Platcher R. Computational Hydromechanics and Heat Exchange: in 2 volumes М., 1990. 384 p.

6. Rodriguez C. G., Culter, A. D. Numerical Analysis of the SCHOLAR Supersonic Combustor, NASA-CR-2003-212689. 2003. 36 р.

7. Rajasekaran A., Babu V. Numerical Simulation of Three-dimensional Reacting Flow in a Model Supersonic Combustor. Journal of Propulsion and Power. Vol. 22. No. 4. 2006. Р. 820-827. https://doi.org/10.2514/1.14952

8. Spalart P., Allmaras S. A one-equation turbulence model for aerodynamic flows: Technical Report. American Institute of Aero-nautics and Astronautics. AIAA-92-0439. 1992. Р. 5-21. https://doi.org/10.2514/6.1992-439

9. Launder B. E., Spalding D. B. Lectures in Mathematical Models of Turbulence. London, 1972. Р. 157-162.

10. Rajasekaran A., Babu V. Numerical Simulation of Three-dimensional Reacting Flow in a Model Supersonic Combustor. Journal of Propulsion and Power. Vol. 22. No. 4. 2006. Р. 820-827. https://doi.org/10.2514/1.14952

11. Ten-See Wang. Multidimensional Unstructured Grid Liquid Rocket-Engine Nozzle Performance and Heat Transfer Analysis. Journal of Propulsion and Power. Vol. 22. No. 1. 2006. 21 р. https://doi.org/10.2514/1.14699

12. Hyun Ko, Woong-Sup Yoon. Performance Analysis of Secondary Gas Injection into a Conical Rocket Nozzle. Journal of Propulsion and Power. Vol. 18, No. 3. 2002. Р. 585-591. https://doi.org/10.2514/2.5972

13. Wilson E. A., Adler D., Bar-Yoseph P. Thrust-Vectoring Nozzle Performance Mode-ling. Journal of Propulsion and Power. Vol. 19, No. 1. 2003. Р. 39-47. https://doi.org/10.2514/2.6100

14. Gross A., Weiland C. Numerical Simulation of Hot Gas Nozzle Flows. Journal of Propulsion and Power. Vol. 20, No. 5. 2004. Р. 879-891. https://doi.org/10.2514/1.5001

15. Gross A., Weiland C. Numerical Simulation of Separated Cold Gas Nozzle Flows. Journal of Propulsion and Power. Vol. 20, No. 3. 2004. Р. 509-519. https://doi.org/10.2514/1.2714

16. Deck S., Guillen P. Numerical Simulation of Side Loads in an Ideal Truncated Nozzle. Journal of Propulsion and Power. Vol. 18, No. 2. 2002. Р. 261-269. https://doi.org/10.2514/2.5965

17. Östlund J., Damgaard T., Frey M. Side-Load Phenomena in Highly Overexpanded Rocket Nozzle. Journal of Propulsion and Power. Vol. 20, No. 4. 2004. Р. 695-704. https://doi.org/10.2514/1.3059

18. Goldberg U. C. Separated Flow Treatment with a New Turbulence Model. AIAA Journal. Vol. 24, No. 10. 1986. Р. 1711-1713. https://doi.org/10.2514/3.9509

19. Golovin V.S., Kolchugin B.A., Labuntsov D.A. Experimental Investigation of Heat Exchange and Critical Heat Loads at Water Boiling in Free Motion Conditions. 1963. Vol. 6, No 2. p. 3-7.

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21. Kutateladze S. S., Leontyev A. I. Heat-Mass Exchange and Friction in Turbulent Boundary Layer. М., 1972. 341 p.

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