Search Results for “porosity” – Collected book of scientific-technical articles https://journal.yuzhnoye.com Space technology. Missile armaments Mon, 09 Mar 2026 00:50:37 +0000 en-GB hourly 1 https://journal.yuzhnoye.com/wp-content/uploads/2020/11/logo_1.svg Search Results for “porosity” – Collected book of scientific-technical articles https://journal.yuzhnoye.com 32 32 2.1.2025 Justification of the parameters of a vertical screw conveyor for transporting lunar regolith https://journal.yuzhnoye.com/content_2025_1-en/annot_2_1_2025-en/ Wed, 27 Aug 2025 12:20:10 +0000 https://journal.yuzhnoye.com/?page_id=35479
These parameters depend on the density and porosity of the transported material, the screw’s geometric characteristics, and the gravitational fi eld at the transportation site.
]]>

2. Justification of the parameters of a vertical screw conveyor for transporting lunar regolith

e-ISSN: 2617-5533

Authors:

Semenenko Ye. V.2, Semenenco P. V.1

Organization:

National Academy of Sciences of Ukraine, M. S. Poliakov Institute of geotechnical mechanics2, Yangel Yuzhnoye State Design Office, Dnipro, Ukraine1

Page: Kosm. teh. Raket. vooruž. 2025 (1); 11-18

DOI: https://doi.org/10.33136/stma2025.01.011

Language: Ukrainian

Annotation: This paper aims to develop a scientifi cally grounded method for determining the key technical parameters of a vertical screw conveyor–specifi cally, throughput and the power requirement of the driving electric motor. These parameters depend on the density and porosity of the transported material, the screw’s geometric characteristics, and the gravitational fi eld at the transportation site. The study also explores potential design constraints when handling lunar regolith. To achieve this objective, the authors applied established equations for screw conveyor parameter calculations, fundamental principles of bulk material mechanics, key electrodynamic equations for asynchronous motors, and specifi c behavioral characteristics of bulk materials during vertical screw transport, which were also investigated experimentally. As a result, a novel method is proposed for calculating the technical specifi cations of a screw conveyor under lunar conditions, based on known geometric parameters, fi lling ratio, and electric motor characteristics. The study further examines the infl uence of the conveyor’s fi lling ratio on performance and identifi es geometric limitations imposed by the operational boundaries of the selected motor. Acceptable values for transport height, screw diameter, other geometric parameters, and achievable fi lling ratios for a given motor are determined. The study substantiates that vertical screw conveyors are the most promising solution for lunar regolith transport. These systems are compact, adaptable, capable of integration within tubes or underground installations, operate continuously, function autonomously, and can be powered by solar energy.

Key words: Moon, regolith, screw conveyor, electric motor, throughput, power

Bibliography:

1. Semеnenko Ye. V., Osadchaia N. V. Traditsionnyie i netraditsionnyie vidy energii, a takzhe kosmicheskiie poleznyie iskopaiemyie v okolozemnom prostranstve.
Nauchno-prakticheskaia konferentsiia «Sovremennyie raschetno-eksperimentalnyie metody opredeleniia kharakteristik raketno-kosmicheskoi techniki». m. Dnipro, 10 12 hrudnia 2019 r. S. 62 – 63. https://doi.org/10.1016/j.repl.2019.01.038

2. Jolliff B. L., Wieczorek M. A., Shearer C. K., Neal C. R. New Views of the Moon. Reviews in mineralogy and geochemistry. 2006. Vol. 60. 721 p. DOI: https://doi.org/10.2138/rmg.2006.60.0

3. Robert E. Grimm. Geophysical constaints on the lunar Procellarum KREEP Terrane. Journal of Geophysical Research: Planets. 2013. Vol. 118, Issue 4. P. 768-778. URL: 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

4. Moon Village Association. URL: https://moon-villageassociation.org/about/

5. GLOBAL MOON VILLAGE. URL: https://space-architect.org/portfolio-item/ global-moon-village

6. Pustovharov А. А., Osynovyy G. G. Kontseptsiia shluzovogo modulia misiachnoi bazy. ХХV Mizhnarodna molodizhna naukovo-praktychna konferentsiia «Ludyna i kosmos».
Zbirnyk tez, NTSAOM, Dnipro, 2023. S. 86 – 87.

7. Berdnik A. I., Kaliapin M. D., Lysenko Yu. A., Bugaienko T. K. Mnogorazovyi lunnyi lender. Kosmichna nauka i technologiia. 2019. T. 25. № 5. S. 3-10.
https://doi.org/10.15407/knit2019.05.003

8. Semenenko P. V. , Groshelev D. G., Osinovyy G. G., Semenenko Ye. V., Osadchaia N. V. Sposoby transportirovki poleznykh iskopaiemykh ot mesta ikh dobychi k mestu pererabotki v lunnykh usloviiakh. XVII konferentsiia molodykh vchenykh «Heotekhnichni problemy rozrobky rodovyshch». m. Dnipro, 24 zhovtnia 2019 r. S 7.

9. Komatsu pobuduie ekskavator dlia roboty na Misiatsi. URL: https://www.autocentre.ua/ua/ news/concept/komatsu-postroit-ekskavator-dlya-raboty-na-lune-1380272.html.

10. Help NASA Design a Robot to Dig on the Moon. URL: https://www.nasa.gov/directorates/ stmd/help-nasa-design-a-robot-to-dig-on-the-moon/

11. Semenenko Ye. V. , Semenenko P. V., Hroshelev D. H. Tekhnolohichni parametry shneka dlia transportuvannia misiachnoho reholitu. Zbirka tez ХХVІ Mizhnarodnoi molodizhnoi naukovo-praktychnoi konferentsii «Ludyna i kosmos», Dnipro, 17 – 19 kvitnia, 2024. S. 132 – 133.

12. Semenenko Ye. V. , Biliaiev M. M., Semenenko P. V. Rozrakhunok parametriv systemy transportuvannia misiachnogo reholitu. Space Technology. Missile Armaments. Zb.
nauk.-tekhn. st. 2024. Vyp. 1. Dnipro: DP «KB «Pivdenne». S. 93 – 101.
https://doi.org/10.33136/stma2024.01.093

13. Bezruchko K. A. Review of potential sources for obtaining energy carriers and mineral raw materials in outer space. Heotekhnichna mekhanika. 2022. № 163. S.140-154. https://doi.org/10.15407/geotm2022.163.140

14. Nouman Khan, Muhammad Kaleem Sarwar, Muhammad Rashid, Hafiz Kamran Jalil Abbasi, Saif Haider, Muhammad Atiq Ur Rehman Tariq, Abdullah Nadeem, Muhammad Ahmad
Zulfiqar, Ali Salem, Nadhir Al-Ansari, Abdelaziz M. Okasha, Ahmed Z. Dewidar&Mohamed A. Mattar. Development of a sustainable portable Archimedes screw turbine for hydropower generation. Scientific Reports. 2025. Vol. 15. Issue 1. DOI
https://doi.org/10.1038/s41598-025-90634-8

15. Kumar Thakur N., Thakur R., Kashyap K., Goel B. Efficiency enhancement in Archimedes screw turbine by varying different input parameters – An experimental study.
Materials Today: Proceedings. 2022. Vol. 52, Part 3. P. 1161-1167.
https://doi.org/10.1016/j.matpr.2021.11.020

16. Kozyn A., Lubitz W. D. A power loss model for Archimedes screw generators. Renewable Energy. 2017, Vol. 108. P. 260-273.
https://doi.org/10.1016/j.renene.2017.02.062

17. Kulykivskii V. L., Paliichuk V. K., Borovskyi V. M. Doslidzhennia travmuvannia zerna hvyntovym konveierom. Konstruiuvannia, vyrobnytstvo ta ekspluatatsia silskohospodarskykh mashyn. 2016. Vyp. 46. S. 160-165.
https://doi.org/10.3233/EPL-46204

18. Lubin M. V., Tokarchuk O. A., Yaropud V. M. Osoblyvosti roboty krutopokhylenykh hvyntovykh transporteriv pry peremishchenni zernovoi produktsii. Tekhnika, enerhetyka, transport. APK. 216. № 3 (95). S. 235-240.

19. Bulkhakov B. M., Adamchuk V. V., Nadykto V. T., Trokhaniak O. M. Teoretychne obgruntuvannia parametriv hnuchkoho hvyntovoho konveiera dlia transportuvannia zernovykh materialiv. Visnyk ahrarnoi nauki. 2023. № 4 (841). S. 59 – 66.

20. Semenenko Ye. V. Nauchnyie osnovy tekhnologii gidromekhanizatsii otkrytoi razrabotki titan-tsyrkonovykh rossypei. Kiev: Naukova dumka, 2011. 232 s.

Full text (PDF) || Content 2025 (1)

Downloads: 57
Abstract views: 
866
0 citations in OpenAlex database (as of 04.03.2026 13:35)
0 citations in Scopus database (as of 14.03.2026 18:16)
0 citations in Zenodo database (as of 14.03.2026 18:16)
Dynamics of article downloads
Dynamics of abstract views
Downloads geography
CountryCityDownloads
USA Ashburn; Detroit; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix;; El Monte; Ashburn; Ashburn; San Mateo; San Mateo; San Mateo; San Mateo; San Mateo; San Mateo; Ashburn; Pompano Beach; Lakeside; Lakeside; Lakeside; Lakeside; Lakeside; Lakeside; San Francisco; San Francisco; Albany; Albany30
Vietnam;; Bien Hoa; Ho Chi Minh City; Huế; Hanoi6
Ukraine Kyiv; Kyiv; Kyiv; Kremenchuk; Kremenchuk; Kremenchuk6
Singapore Singapore; Singapore; Singapore3
Unknown Ryde; Hong Kong2
Brazil Itaquaquecetuba; Sao Roque2
France Paris; Paris2
China Pekin;2
Germany Falkenstein1
Romania1
Poland Poznan1
Slovakia1
Downloads, views for all articles
Articles, downloads, views by all authors
Articles for all companies
Geography of downloads articles
Збірник науково-технічних статей


Збірник науково-технічних статей


Збірник науково-технічних статей


Збірник науково-технічних статей


Scopus - Yuzhnoye State Design Office publications


OpenAlex - Yuzhnoye State Design Office publications


Zenodo - Yuzhnoye State Design Office publications


ROAR - Yuzhnoye State Design Office repository record


ROR - Yuzhnoye State Design Office organization ID


Open Archives - Validate Site

Keywords cloud

Your browser doesn't support the HTML5 CANVAS tag.
]]> 25.1.2019 Technological Peculiarities of Manufacturing Products of Irregular Profile by Method of Selective Laser Melting of 316L Powder Metal Material https://journal.yuzhnoye.com/content_2019_1-en/annot_25_1_2019-en/ Wed, 24 May 2023 16:01:06 +0000 https://journal.yuzhnoye.com/?page_id=27730
Reducing porosity in AlSi10Mg parts processed by selective laser melting //
]]>

25. Technological Peculiarities of Manufacturing Products of Irregular Profile by Method of Selective Laser Melting of 316L Powder Metal Material

e-ISSN: 2617-5533

Authors:

Bunchuk Y. P., Usenko B. O., Babenko R. G.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2019, (1); 171-181

DOI: https://doi.org/10.33136/stma2019.01.171

Language: Russian

Annotation: This article considers the practical data on parts (specimens) manufacturing from powder metal material 316L using the innovative method of selective laser melting; the comparative study of the structure and physical and mechanical properties of 316L material, the combined influence of heat treatment and specimen orientation relative to the arrangement plate on the physical and mechanical properties and structure of specimens made of 316L alloy. Results are presented of the following: comparative study of the physical and mechanical properties and structure of specimens, manufactured using the selective laser melting technologies with horizontal and vertical placement relative to the arrangement plate; dependence of the ultimate strength and unit elongation on the annealing temperature. The possibility and suitability of the selective laser melting technology to manufacture parts and space-rocket hardware are evaluated. Experimental study of the specimens heat treatment conditions after selective laser melting enabled the definition of the optimal condition for the 316L alloy and have shown that heat treatment of the manufactured specimens under the heating at 1230 °С with the subsequent tempering at the temperature of 510 °С gives the homogeneous structure to the material of specimens made of alloy 316L, its dendritic structure, inherent in the specimen material in its initial condition, disappears after selective laser melting. Results of the mechanical tests of the obtained specimens have shown that the technology of selective laser melting provides development of products made of powder metal material 316L with optimal complex of physical and mechanical properties. It is shown that transition to the selective laser melting technology will enable production of the aerospace products, in particular geometrically-complex parts made of powder metal material 316L, in one technological cycle, excluding cutting, punching, refinement, cropping, welding, manufacturing of special tools or stamps

Key words: specimens, heat treatment, alloy, physical and mechanical properties, technological cycle

Bibliography:
1. Dovbysh V. M., Zabednev P. V., Zelenko M. A. Additivnye technologii I izdeliya iz metalla// Bibliotechka liteischika. №8–9. 2014. P. 33-38.
2. Kempen K., Thijs L., Van Humbeeck J., Kruth J.-P. Mechanical properties of AlSi10Mg produced by SLM / Physics Procedia. №39. 2012. Р. 439–446. https://doi.org/10.1016/j.phpro.2012.10.059
3. Olakanmi E. O. Selective laser sintering/melting (SLS/SLM) of pure Al, Al–Mg, and Al–Si powders: Effect of processing conditions and powder properties / Journal of Materials Processing Technology. №213. 2013. Р. 1387–1405. https://doi.org/10.1016/j.jmatprotec.2013.03.009
4. Eleftherios Louvis, Fox Peter, Sutcliffe Christopher J. Selective laser melting of aluminium components // Journal of Materials Processing Technology. – №211. 2011. Р. 275–284. https://doi.org/10.1016/j.jmatprotec.2010.09.019
5. Aboulkhair Nesma T., Everitt Nicola M., Ashcroft Ian, Tuck Chris. Reducing porosity in AlSi10Mg parts processed by selective laser melting // Additive Manufacturing Journal. №1–4. 2014. Р. 77 – 86. https://doi.org/10.1016/j.addma.2014.08.001

Full text (PDF) || Content 2019 (1)

Downloads: 119
Abstract views: 
1843
0 citations in OpenAlex database (as of 04.03.2026 20:43)
0 citations in Scopus database (as of 14.03.2026 18:16)
0 citations in Zenodo database (as of 14.03.2026 18:16)
Dynamics of article downloads
Dynamics of abstract views
Downloads geography
CountryCityDownloads
USA Ashburn;; Los Angeles; Baltimore; Plano; Dublin; Ashburn; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Monroe; El Monte; El Monte; Ashburn; Ashburn; Seattle; Seattle; Ashburn; Ashburn; Ashburn; Ashburn; Ashburn; Ashburn; Ashburn; Mountain View; Tappahannock; Portland; Portland; San Mateo; San Mateo; San Mateo; Ashburn; Ashburn; Des Moines; Boardman; Ashburn; Pompano Beach; Lakeside; Lakeside; Lakeside; Lakeside; Lakeside; San Francisco; San Francisco; Albany; Albany; West Palm Beach; Seattle66
Singapore Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore20
Vietnam; Hanoi; Hanoi; Sơn La; Ho Chi Minh City;6
China; Nanjing; Guangzhou; Pekin;5
Germany Falkenstein; Falkenstein; Falkenstein3
France; Paris; Paris3
Netherlands Amsterdam; Amsterdam2
Bangladesh Dhaka; Dhaka2
Unknown Canberra;2
Brazil Fortaleza; Mogi das Cruzes2
Canada Toronto; Toronto2
Lithuania Šiauliai1
Great Britain London1
Romania Voluntari1
Japan1
Argentina1
Ukraine Dnipro1
Downloads, views for all articles
Articles, downloads, views by all authors
Articles for all companies
Geography of downloads articles
25.1.2019 Technological Peculiarities of Manufacturing Products of Irregular Profile by Method of Selective Laser Melting of 316L Powder Metal Material
25.1.2019 Technological Peculiarities of Manufacturing Products of Irregular Profile by Method of Selective Laser Melting of 316L Powder Metal Material
25.1.2019 Technological Peculiarities of Manufacturing Products of Irregular Profile by Method of Selective Laser Melting of 316L Powder Metal Material

Keywords cloud

Your browser doesn't support the HTML5 CANVAS tag.
]]> 24.1.2019 Porous Cast Materials (Gasars). Options of Their Use in Space Rocket Hardware https://journal.yuzhnoye.com/content_2019_1-en/annot_24_1_2019-en/ Wed, 24 May 2023 16:01:02 +0000 https://journal.yuzhnoye.com/?page_id=27729
So, for example, to obtain radial porosity, radial heat withdrawal is required. It is possible to alternate the porosity layers and monolithic metal layers. The dimensions of gasars pores are in the limits from 10 μm to 10 mm at total porosity from 7 to 55 (75%). Key words: gasars , gas-eutectic conversion , eutectics , porosity Bibliography: 1. gasars , gas-eutectic conversion , eutectics , porosity .
]]>

24. Porous Cast Materials (Gasars). Options of Their Use in Space Rocket Hardware

e-ISSN: 2617-5533

Authors:

Naiden O. O., Ivanov A. S.

Organization:

Yangel Yuzhnoye State Design Office, Dnipro, Ukraine

Page: Kosm. teh. Raket. vooruž. 2019, (1); 163-170

DOI: https://doi.org/10.33136/stma2019.01.163

Language: Russian

Annotation: Gasars is a new type of porous cast materials manufactured on the basis of metals and their alloys, some types of ceramics. The basis of the process is gas-eutectic conversion in the system metal-hydrogen. The process of investigation and creation of gasars was commenced in 1979 in the National Metallurgical Academy of Ukraine and is currently continued in Ukraine, the USA, China, Japan, South Korea, Poland and others. The gasars production technological process consists in melting the specified material (metal, alloy, ceramics) in hydrogen (or other active gas) atmosphere at a certain pressure. After the melt is saturated with active gas to a certain concentration, the crystallization process begins at which the pore formation process is launched. As the pores growth occurs perpendicular to crystallization front, the orientation of heat withdrawal influences pores location. So, for example, to obtain radial porosity, radial heat withdrawal is required. To obtain various structures, along with directed crystallization process, the pressure in crystallization chamber is an important factor, which drives the gasar morphology. The porous structure of gasars is diverse, there are the gasars with longitudinal, cylindrical, spherical, conical pores. It is possible to alternate the porosity layers and monolithic metal layers. The dimensions of gasars pores are in the limits from 10 μm to 10 mm at total porosity from 7 to 55 (75%). However, there is a possibility to obtain the pores with smaller diameter. The mechanical properties of gasars have a number of advantages as compared with conventional porous materials produced by different methods. Subsequent processing of the gasars does not differ from analogous non-porous materials, which is also an advantage over conventional porous materials. And in case when the diameter of pores is less than 50 μm, the exceedance of mechanical properties of gasars as compared with monolithic materials of the same chemical composition is observed. This is caused by the fact that the pores were formed during crystallization and at the action of pressure on a gasar, local hardening occurs. At present, the gasars have already found application as light and strong structural materials, filters, heat exchangers, dampers, slide bearings, catalyst elements, friction materials, etc. The use of gasars in space hardware will help to considerably reduce the mass of launch vehicle structural elements without worsening strength properties. The possibility of welding and soldering the gasars allows finding their application in the structure of propellant systems, compressed gas and propellants supply systems, creating filtering elements based on the gasars, including propellant spraying and mixing systems.

Key words: gasars, gas-eutectic conversion, eutectics, porosity

Bibliography:
1. Shapovalov V. I. Legirovanie vodorodom. D.: Zhurfond, 2013. 385 p.
2. Shapovalov V. TERMEC 2006 // International Conference on Processing and Manufacturing of Advanced Materials, July 4–8, 2006, Vancouver, Canada. Р. 529.
3. Komissarchuk Olga, Xu Zhengbin, Hao Hai, Zhang Xinglu, Karpov V. Pore structure and mechanical properties of directionally solidified porous aluminum alloys / Research & Development. Vol. 11, No.1, January 2014.
4. Karpov V. V., Karpov V. Yu. Vliyanie poristosti na teploprovodnost’ gazov/ Teoriya I praktica metallurgii. 2003. № 4.

Full text (PDF) || Content 2019 (1)

Downloads: 138
Abstract views: 
1893
0 citations in OpenAlex database (as of 04.03.2026 09:51)
0 citations in Scopus database (as of 14.03.2026 18:16)
0 citations in Zenodo database (as of 14.03.2026 18:16)
Dynamics of article downloads
Dynamics of abstract views
Downloads geography
CountryCityDownloads
USA Boardman;; Cincinnati;;; Los Angeles; Baltimore; Modesto; Plano; Miami; Columbus; Columbus; Ashburn; Ashburn; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Phoenix; Monroe; El Monte; El Monte; El Monte; El Monte; Ashburn; Ashburn; Ashburn; Seattle; Seattle; Ashburn; Houston; Ashburn; Ashburn; Ashburn; Seattle; Tappahannock; Portland; San Mateo; San Mateo; San Mateo; San Mateo; San Mateo; San Mateo; Des Moines; Boardman; Boardman; Ashburn; Ashburn; Ashburn; Ashburn; Ashburn; Ashburn; Pompano Beach; Lakeside; Lakeside; Lakeside; Lakeside; San Francisco; San Francisco; Albany; Albany; Seattle; Seattle82
Singapore Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore; Singapore15
Unknown;; Hong Kong;;; Hong Kong; Hong Kong; Hong Kong;;10
Vietnam Pleiku; Ho Chi Minh City; Hanoi; Ho Chi Minh City;5
Germany Falkenstein; Falkenstein; Frankfurt am Main; Limburg an der Lahn; Falkenstein5
Canada Toronto; Toronto; Toronto; Toronto4
France Paris; Paris; Paris3
China; Quanzhou;3
Ukraine Kyiv; Kyiv; Dnipro3
Netherlands Amsterdam; Amsterdam2
Azerbaijan Baku1
Great Britain London1
Syria1
Indonesia Dumai1
Romania Voluntari1
Lithuania Šiauliai1
Downloads, views for all articles
Articles, downloads, views by all authors
Articles for all companies
Geography of downloads articles
24.1.2019 Porous Cast Materials (Gasars). Options of Their Use in Space Rocket Hardware
24.1.2019 Porous Cast Materials (Gasars). Options of Their Use in Space Rocket Hardware
24.1.2019 Porous Cast Materials (Gasars). Options of Their Use in Space Rocket Hardware

Keywords cloud

Your browser doesn't support the HTML5 CANVAS tag.
]]>