TY  - CONF
AU  - Radulović, Radoslav
AU  - Milić, Milica
AU  - Xun, Fei
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7728
AB  - This paper focuses on the conceptual design and structural analysis of winglets attached to the wings of passenger planes, with the aim of improving aircraft performance by reducing fuel consumption and increasing range. Winglets, which are upward and outward extensions of the wings, function by mitigating the drag induced by wingtip vortices. This study underscores the criticality of the winglets' design, as it must strike a balance between structural integrity and lightweight construction. To achieve these objectives, the study proposes the utilization of aluminum and composite materials in a thin-walled construction. Aluminum offers favorable strength-to-weight ratios, rendering it a commonly employed material in aircraft construction. In contrast, composite materials exhibit exceptional strength-to-weight ratios and excellent resistance to corrosion, making them highly suitable for lightweight constructions.
PB  - Serbian Society of Mechanics
C3  - 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023
T1  - COMPARATIVE STRUCTURAL ANALYSIS OF ALUMINUM AND COMPOSITE WING OF PASSENGER AIRCRAFT
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7728
ER  - 

@conference{
author = "Radulović, Radoslav and Milić, Milica and Xun, Fei",
year = "2023",
abstract = "This paper focuses on the conceptual design and structural analysis of winglets attached to the wings of passenger planes, with the aim of improving aircraft performance by reducing fuel consumption and increasing range. Winglets, which are upward and outward extensions of the wings, function by mitigating the drag induced by wingtip vortices. This study underscores the criticality of the winglets' design, as it must strike a balance between structural integrity and lightweight construction. To achieve these objectives, the study proposes the utilization of aluminum and composite materials in a thin-walled construction. Aluminum offers favorable strength-to-weight ratios, rendering it a commonly employed material in aircraft construction. In contrast, composite materials exhibit exceptional strength-to-weight ratios and excellent resistance to corrosion, making them highly suitable for lightweight constructions.",
publisher = "Serbian Society of Mechanics",
journal = "9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023",
title = "COMPARATIVE STRUCTURAL ANALYSIS OF ALUMINUM AND COMPOSITE WING OF PASSENGER AIRCRAFT",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7728"
}

Radulović, R., Milić, M.,& Xun, F.. (2023). COMPARATIVE STRUCTURAL ANALYSIS OF ALUMINUM AND COMPOSITE WING OF PASSENGER AIRCRAFT. in 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023
Serbian Society of Mechanics..
https://hdl.handle.net/21.15107/rcub_machinery_7728

Radulović R, Milić M, Xun F. COMPARATIVE STRUCTURAL ANALYSIS OF ALUMINUM AND COMPOSITE WING OF PASSENGER AIRCRAFT. in 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7728 .

Radulović, Radoslav, Milić, Milica, Xun, Fei, "COMPARATIVE STRUCTURAL ANALYSIS OF ALUMINUM AND COMPOSITE WING OF PASSENGER AIRCRAFT" in 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023 (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7728 .

TY  - CONF
AU  - Radulović, Radoslav
AU  - Milić, Milica
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7727
AB  - As the use of unmanned aerial vehicles (UAV) in the world has expanded, the market needs for the development of multi-role unmanned systems are increasing. These unmanned systems tend to largely find their constant and irreplaceable role in many industries. The development of such systems is a complex process, which, among other things, must include detailed structural, static and dynamic calculations and testing. The UAV presented in this paper is a hybrid powered aircraft with vertical take-off and landing (VTOL) with a composite structure and an innovative hybrid propulsion with a starter-generator system. VTOL gives an advantage in the exploitation of the aircraft itself, because it does not require special ground conditions or space for take-off and landing. The starter and generator system enables a smaller amount of fixed mass, such as batteries, while the structure made of composite materials enables a smaller mass and the desired characteristics of strength, resistance to corrosion and fatigue. This paper present development review process of the latest technology in terms of the concept of system and subsystem operation, as well as financially favorable and high-quality construction.
PB  - Serbian Society of Mechanics
C3  - 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023
T1  - DEVELOPMENT OF A HYBRID FIXED-WING VTOL UNMANNED AERIAL VEHICLE
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7727
ER  - 

@conference{
author = "Radulović, Radoslav and Milić, Milica",
year = "2023",
abstract = "As the use of unmanned aerial vehicles (UAV) in the world has expanded, the market needs for the development of multi-role unmanned systems are increasing. These unmanned systems tend to largely find their constant and irreplaceable role in many industries. The development of such systems is a complex process, which, among other things, must include detailed structural, static and dynamic calculations and testing. The UAV presented in this paper is a hybrid powered aircraft with vertical take-off and landing (VTOL) with a composite structure and an innovative hybrid propulsion with a starter-generator system. VTOL gives an advantage in the exploitation of the aircraft itself, because it does not require special ground conditions or space for take-off and landing. The starter and generator system enables a smaller amount of fixed mass, such as batteries, while the structure made of composite materials enables a smaller mass and the desired characteristics of strength, resistance to corrosion and fatigue. This paper present development review process of the latest technology in terms of the concept of system and subsystem operation, as well as financially favorable and high-quality construction.",
publisher = "Serbian Society of Mechanics",
journal = "9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023",
title = "DEVELOPMENT OF A HYBRID FIXED-WING VTOL UNMANNED AERIAL VEHICLE",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7727"
}

Radulović, R.,& Milić, M.. (2023). DEVELOPMENT OF A HYBRID FIXED-WING VTOL UNMANNED AERIAL VEHICLE. in 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023
Serbian Society of Mechanics..
https://hdl.handle.net/21.15107/rcub_machinery_7727

Radulović R, Milić M. DEVELOPMENT OF A HYBRID FIXED-WING VTOL UNMANNED AERIAL VEHICLE. in 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7727 .

Radulović, Radoslav, Milić, Milica, "DEVELOPMENT OF A HYBRID FIXED-WING VTOL UNMANNED AERIAL VEHICLE" in 9th International Congress of Serbian Society of Mechanics, Vrnjačka Banja 5–7.07.2023 (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7727 .

TY  - CONF
AU  - Trišović, Nataša
AU  - Li, Wei
AU  - Gavrilović, Marko
AU  - Baneasa Birtok, Corneliu
AU  - Ristić, Ognjen
AU  - Milić, Milica
AU  - Radulovic, Radoslav
AU  - Trišović, Zaga
AU  - Socalici, Ana Virginia
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7739
PB  - Academy of Applied Technical Studies Belgrade
C3  - International scientific and professional conference: "Politehnika 2023"
T1  - Effects of changing design parameters
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7739
ER  - 

@conference{
author = "Trišović, Nataša and Li, Wei and Gavrilović, Marko and Baneasa Birtok, Corneliu and Ristić, Ognjen and Milić, Milica and Radulovic, Radoslav and Trišović, Zaga and Socalici, Ana Virginia",
year = "2023",
publisher = "Academy of Applied Technical Studies Belgrade",
journal = "International scientific and professional conference: "Politehnika 2023"",
title = "Effects of changing design parameters",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7739"
}

Trišović, N., Li, W., Gavrilović, M., Baneasa Birtok, C., Ristić, O., Milić, M., Radulovic, R., Trišović, Z.,& Socalici, A. V.. (2023). Effects of changing design parameters. in International scientific and professional conference: "Politehnika 2023"
Academy of Applied Technical Studies Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_7739

Trišović N, Li W, Gavrilović M, Baneasa Birtok C, Ristić O, Milić M, Radulovic R, Trišović Z, Socalici AV. Effects of changing design parameters. in International scientific and professional conference: "Politehnika 2023". 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7739 .

Trišović, Nataša, Li, Wei, Gavrilović, Marko, Baneasa Birtok, Corneliu, Ristić, Ognjen, Milić, Milica, Radulovic, Radoslav, Trišović, Zaga, Socalici, Ana Virginia, "Effects of changing design parameters" in International scientific and professional conference: "Politehnika 2023" (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7739 .

TY  - JOUR
AU  - Milić, Milica
AU  - Svorcan, Jelena
AU  - Zorić, Nemanja
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan B.
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6955
AB  - Composite materials have been extensively employed in the aviation industry in recent years. The application of new materials enables significant weight savings with improved mechanical characteristics. This is also very important in the field of development of unmanned aerial vehicles (UAV). In the design phases, it is necessary to perceive all the aspects that are important for the structure and consider different load cases. The relationship between weight and strength proved to be important. This means that detailed strength analyses of each structural part are indispensable. In particular, primary load-bearing structures must sustain all types of loads without fail. Failure of the structure can affect the motion of the UAV during the mission or lead to a crash and significant losses. This paper presents the research performed on the failure analysis of a composite beam of a novel UAV. During the testing phase, under an unpredictable load condition followed by a crash landing, failure of the structure occurred on a beam element. The study was performed to determine the cause of the failure of certain layers of the composite laminate, because the previous calculation showed that it met the criteria for which it was dimensioned. Based on the telemetry data and the impact load that was registered, a complementary numerical and experimental analyses were performed to determine what happened and why. Composite test specimens were extracted from the beam and subjected to standard tensile tests, in order to determine the actual mechanical characteristics of the layered material. The paper presents in detail the comparison of the results as well as the methodology used in this research.
PB  - London : Sage Publications Ltd
T2  - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
T1  - Mathematical modeling and experimental investigation of a composite beam failure - Case study
EP  - 12
SP  - 1
DO  - 10.1177/09544062231179078
ER  - 

@article{
author = "Milić, Milica and Svorcan, Jelena and Zorić, Nemanja and Atanasovska, Ivana and Momčilović, Dejan B.",
year = "2023",
abstract = "Composite materials have been extensively employed in the aviation industry in recent years. The application of new materials enables significant weight savings with improved mechanical characteristics. This is also very important in the field of development of unmanned aerial vehicles (UAV). In the design phases, it is necessary to perceive all the aspects that are important for the structure and consider different load cases. The relationship between weight and strength proved to be important. This means that detailed strength analyses of each structural part are indispensable. In particular, primary load-bearing structures must sustain all types of loads without fail. Failure of the structure can affect the motion of the UAV during the mission or lead to a crash and significant losses. This paper presents the research performed on the failure analysis of a composite beam of a novel UAV. During the testing phase, under an unpredictable load condition followed by a crash landing, failure of the structure occurred on a beam element. The study was performed to determine the cause of the failure of certain layers of the composite laminate, because the previous calculation showed that it met the criteria for which it was dimensioned. Based on the telemetry data and the impact load that was registered, a complementary numerical and experimental analyses were performed to determine what happened and why. Composite test specimens were extracted from the beam and subjected to standard tensile tests, in order to determine the actual mechanical characteristics of the layered material. The paper presents in detail the comparison of the results as well as the methodology used in this research.",
publisher = "London : Sage Publications Ltd",
journal = "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science",
title = "Mathematical modeling and experimental investigation of a composite beam failure - Case study",
pages = "12-1",
doi = "10.1177/09544062231179078"
}

Milić, M., Svorcan, J., Zorić, N., Atanasovska, I.,& Momčilović, D. B.. (2023). Mathematical modeling and experimental investigation of a composite beam failure - Case study. in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
London : Sage Publications Ltd., 1-12.
https://doi.org/10.1177/09544062231179078

Milić M, Svorcan J, Zorić N, Atanasovska I, Momčilović DB. Mathematical modeling and experimental investigation of a composite beam failure - Case study. in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 2023;:1-12.
doi:10.1177/09544062231179078 .

Milić, Milica, Svorcan, Jelena, Zorić, Nemanja, Atanasovska, Ivana, Momčilović, Dejan B., "Mathematical modeling and experimental investigation of a composite beam failure - Case study" in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science (2023):1-12,
https://doi.org/10.1177/09544062231179078 . .

TY  - CONF
AU  - Milić, Milica
AU  - Atanasovska, Ivana
AU  - Ristić, Ognjen
AU  - Momčilović, Dejan B.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7513
AB  - The high level of worthiness of unmanned aerial vehicles (UAV), particularly in everyday life, is something that will be common thing in close future. The design solutions for UAV us subject of constant innovation, focused on the improving structure performances and weight reducing. The use of new materials. like various composites, is necessary during this process to fulfill such demanding structural design requirements. Despite the fact that such kind of composite made UAV structures are subjected to the detailed calculation procedures and experimental verifications in the design phase, the fracture and failure can occur during testing in real operation conditions. The redesign procedure is required in order to overcome the noted issues.This paper describes failure analysis, as well as structural redesign procedure for a beam element of an unconventional UAV. The fracture analysis is based on the numerical calculations of the deformation and stress state of the element, as well as experimental investigation of material characteristics. The developed redesign solution contains modifications in material of the element, as well as the changes in the structure design of the failure zone. The Finite Element Analysis is performed and discussed for both of the element structures: original design and redesign based on the fracture analysis. The conclusions obtained by the comparison of these Finite Element Analyses show the significant structure improvements in the stress concentration zone, achieved by the proposed redesign.
PB  - University of Belgrade - Faculty of Mechanical Engineering, Belgrade, Serbia
C3  - 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU
T1  - Failure analysis of beam of unmanned aerial vehicle
SP  - 156
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7513
ER  - 

@conference{
author = "Milić, Milica and Atanasovska, Ivana and Ristić, Ognjen and Momčilović, Dejan B.",
year = "2022",
abstract = "The high level of worthiness of unmanned aerial vehicles (UAV), particularly in everyday life, is something that will be common thing in close future. The design solutions for UAV us subject of constant innovation, focused on the improving structure performances and weight reducing. The use of new materials. like various composites, is necessary during this process to fulfill such demanding structural design requirements. Despite the fact that such kind of composite made UAV structures are subjected to the detailed calculation procedures and experimental verifications in the design phase, the fracture and failure can occur during testing in real operation conditions. The redesign procedure is required in order to overcome the noted issues.This paper describes failure analysis, as well as structural redesign procedure for a beam element of an unconventional UAV. The fracture analysis is based on the numerical calculations of the deformation and stress state of the element, as well as experimental investigation of material characteristics. The developed redesign solution contains modifications in material of the element, as well as the changes in the structure design of the failure zone. The Finite Element Analysis is performed and discussed for both of the element structures: original design and redesign based on the fracture analysis. The conclusions obtained by the comparison of these Finite Element Analyses show the significant structure improvements in the stress concentration zone, achieved by the proposed redesign.",
publisher = "University of Belgrade - Faculty of Mechanical Engineering, Belgrade, Serbia",
journal = "1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU",
title = "Failure analysis of beam of unmanned aerial vehicle",
pages = "156",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7513"
}

Milić, M., Atanasovska, I., Ristić, O.,& Momčilović, D. B.. (2022). Failure analysis of beam of unmanned aerial vehicle. in 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU
University of Belgrade - Faculty of Mechanical Engineering, Belgrade, Serbia., 156.
https://hdl.handle.net/21.15107/rcub_machinery_7513

Milić M, Atanasovska I, Ristić O, Momčilović DB. Failure analysis of beam of unmanned aerial vehicle. in 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU. 2022;:156.
https://hdl.handle.net/21.15107/rcub_machinery_7513 .

Milić, Milica, Atanasovska, Ivana, Ristić, Ognjen, Momčilović, Dejan B., "Failure analysis of beam of unmanned aerial vehicle" in 1st International Conference on Mathematical Modelling in Mechanics and Engineering Mathematical Institute SANU (2022):156,
https://hdl.handle.net/21.15107/rcub_machinery_7513 .

TY  - CONF
AU  - Milić, Milica
AU  - Svorcan, Jelena
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4265
AB  - Advancements in using technology of unmanned aerial systems have made UAVs easier to
operate, more affordable, and capable of performing a broader range of tasks.This has led to a
large expansion of UAV applications in society, which has led to a large expansion of their
applications. However, the main challenge is still to determine the precise location where the
UAV would collect the desired data during an autonomous flight. This type of problem often
occurs when the purpose of an unmanned aerial vehicle is to perform tasks that require high
precision in measurements and when the UAV is not in optical sight. High-precision Global
Navigation Satellite System (GNSS) sensors can be used to solve this problem, but this adds
significant cost and operational complexity to the operation of a UAV. Also, these sensors
cannot be used in urban areas, industrial zones or indoors because the signals become
unreliable. By using RTK (real-time kinematic) GPS, sufficient precision is achieved for the
reconstruction of the aircraft trajectory. This network operates on the principle of a base station,
whose location is precisely determined, while the UAV is a moving body, so it is possible
between these two objects to correct or remove errors that either one of them would observe
themselves. The objective of this paper is to produce localization of a moving UAV, and 3D
visualization its trajectory, using a telemetry data as well as error estimation.
PB  - University of Belgrade, Faculty of Mechanical Engineering
C3  - Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering
T1  - Unmanned aerial vehicle trajectory visualization and reconstruction using the changes in significant variables over time
SP  - 112
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4265
ER  - 

@conference{
author = "Milić, Milica and Svorcan, Jelena",
year = "2022",
abstract = "Advancements in using technology of unmanned aerial systems have made UAVs easier to
operate, more affordable, and capable of performing a broader range of tasks.This has led to a
large expansion of UAV applications in society, which has led to a large expansion of their
applications. However, the main challenge is still to determine the precise location where the
UAV would collect the desired data during an autonomous flight. This type of problem often
occurs when the purpose of an unmanned aerial vehicle is to perform tasks that require high
precision in measurements and when the UAV is not in optical sight. High-precision Global
Navigation Satellite System (GNSS) sensors can be used to solve this problem, but this adds
significant cost and operational complexity to the operation of a UAV. Also, these sensors
cannot be used in urban areas, industrial zones or indoors because the signals become
unreliable. By using RTK (real-time kinematic) GPS, sufficient precision is achieved for the
reconstruction of the aircraft trajectory. This network operates on the principle of a base station,
whose location is precisely determined, while the UAV is a moving body, so it is possible
between these two objects to correct or remove errors that either one of them would observe
themselves. The objective of this paper is to produce localization of a moving UAV, and 3D
visualization its trajectory, using a telemetry data as well as error estimation.",
publisher = "University of Belgrade, Faculty of Mechanical Engineering",
journal = "Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering",
title = "Unmanned aerial vehicle trajectory visualization and reconstruction using the changes in significant variables over time",
pages = "112",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4265"
}

Milić, M.,& Svorcan, J.. (2022). Unmanned aerial vehicle trajectory visualization and reconstruction using the changes in significant variables over time. in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering
University of Belgrade, Faculty of Mechanical Engineering., 112.
https://hdl.handle.net/21.15107/rcub_machinery_4265

Milić M, Svorcan J. Unmanned aerial vehicle trajectory visualization and reconstruction using the changes in significant variables over time. in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering. 2022;:112.
https://hdl.handle.net/21.15107/rcub_machinery_4265 .

Milić, Milica, Svorcan, Jelena, "Unmanned aerial vehicle trajectory visualization and reconstruction using the changes in significant variables over time" in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering (2022):112,
https://hdl.handle.net/21.15107/rcub_machinery_4265 .

TY  - CONF
AU  - Milić, Milica
AU  - Svorcan, Jelena
AU  - Jazarević, Vladimir
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4267
AB  - Neodrživi porast zahteva za energijom (naročito iz neobnovljivih izvora energije) ima za posledicu velike količine otpada, uništavanje životne sredine i konstantni porast potrošnje nebnovljivih izvora energije. Sve to sa sobom nosi i porast cena tih resursa. Da bi se ispunili savremeni energetski zahtevi, a samim tim i sačuvala životna sredina, smanjila količina otpada itd. neophodno je investirati u nove tehnologije koje će iskoristiti potencijal obnovljivih izvora energije i tako doprineti efikasnijem iskorišćenju tih resursa. Jedna od danas veoma aktuelnih obnovljivih energija je i energija vetra, odnosno vetrogeneratori kao način za njeno iskorišćenje. Kinetička energija vetra se može transformisati u obrtno kretanje vratila rotora vetrogeneratora pri dejstvu sila aerodinamičkog otpora i uzgona na lopatice. Lopatice čine rotor koji je osnovna komponenta vetrogeneratora. One su uzgonske površine, čiji je poprečni presek aeroprofil. Odlikuje ih velika vitkost i zakrivljena geometrija. Najčešće su napravljene od kompozitnih materijala, uglavnom od staklenih vlakana. Mogu se arodinamički optimizovati u zavisnosti od potrebnih radnih režima.
Rad prikazuje simulaciju rada rotora vetroturbine, procenu aerodinamičkih opterećenja koji deluju na lopaticu u standardnim i nestandardnim radnim uslovima, a potom i detaljnu numeričku
strukturalnu analizu kompozitne lopatice vetroturbine metodom konačnih elemenata.
Rezultati su prikazani u obliku raspodela napona, pomeranja i kriterijuma loma po lopatici.
PB  - Beograd : Savez energetičara
C3  - Energija, ekonomija, ekologija - Monografija XXXV Međunarodnog savetovanja ENERGETIKA 2020 - Zbornik radova
T1  - Numerička strukturalna analiza kompozitne lopatice vetroturbine
EP  - 266
SP  - 262
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4267
ER  - 

@conference{
author = "Milić, Milica and Svorcan, Jelena and Jazarević, Vladimir",
year = "2020",
abstract = "Neodrživi porast zahteva za energijom (naročito iz neobnovljivih izvora energije) ima za posledicu velike količine otpada, uništavanje životne sredine i konstantni porast potrošnje nebnovljivih izvora energije. Sve to sa sobom nosi i porast cena tih resursa. Da bi se ispunili savremeni energetski zahtevi, a samim tim i sačuvala životna sredina, smanjila količina otpada itd. neophodno je investirati u nove tehnologije koje će iskoristiti potencijal obnovljivih izvora energije i tako doprineti efikasnijem iskorišćenju tih resursa. Jedna od danas veoma aktuelnih obnovljivih energija je i energija vetra, odnosno vetrogeneratori kao način za njeno iskorišćenje. Kinetička energija vetra se može transformisati u obrtno kretanje vratila rotora vetrogeneratora pri dejstvu sila aerodinamičkog otpora i uzgona na lopatice. Lopatice čine rotor koji je osnovna komponenta vetrogeneratora. One su uzgonske površine, čiji je poprečni presek aeroprofil. Odlikuje ih velika vitkost i zakrivljena geometrija. Najčešće su napravljene od kompozitnih materijala, uglavnom od staklenih vlakana. Mogu se arodinamički optimizovati u zavisnosti od potrebnih radnih režima.
Rad prikazuje simulaciju rada rotora vetroturbine, procenu aerodinamičkih opterećenja koji deluju na lopaticu u standardnim i nestandardnim radnim uslovima, a potom i detaljnu numeričku
strukturalnu analizu kompozitne lopatice vetroturbine metodom konačnih elemenata.
Rezultati su prikazani u obliku raspodela napona, pomeranja i kriterijuma loma po lopatici.",
publisher = "Beograd : Savez energetičara",
journal = "Energija, ekonomija, ekologija - Monografija XXXV Međunarodnog savetovanja ENERGETIKA 2020 - Zbornik radova",
title = "Numerička strukturalna analiza kompozitne lopatice vetroturbine",
pages = "266-262",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4267"
}

Milić, M., Svorcan, J.,& Jazarević, V.. (2020). Numerička strukturalna analiza kompozitne lopatice vetroturbine. in Energija, ekonomija, ekologija - Monografija XXXV Međunarodnog savetovanja ENERGETIKA 2020 - Zbornik radova
Beograd : Savez energetičara., 262-266.
https://hdl.handle.net/21.15107/rcub_machinery_4267

Milić M, Svorcan J, Jazarević V. Numerička strukturalna analiza kompozitne lopatice vetroturbine. in Energija, ekonomija, ekologija - Monografija XXXV Međunarodnog savetovanja ENERGETIKA 2020 - Zbornik radova. 2020;:262-266.
https://hdl.handle.net/21.15107/rcub_machinery_4267 .

Milić, Milica, Svorcan, Jelena, Jazarević, Vladimir, "Numerička strukturalna analiza kompozitne lopatice vetroturbine" in Energija, ekonomija, ekologija - Monografija XXXV Međunarodnog savetovanja ENERGETIKA 2020 - Zbornik radova (2020):262-266,
https://hdl.handle.net/21.15107/rcub_machinery_4267 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Milić, Milica
AU  - Vasić, Vladimir
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4213
AB  - The number of light aircrafts is constantly increasing and this trend will continue in the future with further development of composite technology and hybrid and purely electric propulsion systems. Since these vehicles enable fast and comfortable transport to destinations in the region and will be employed more and more in urban environments, any improvement of aerodynamic performances together with size reduction would be more than beneficial. Therefore, this paper presents a comparative study of aerodynamic performances of two different configurations of lifting surfaces, single vs. double wing since biplane configuration enables more compact aircraft design. Lift and drag coefficients are obtained by simulating flow by finite volume method in ANSYS Fluent. The flow is considered incompressible and viscous. Reynolds-averaged Navier-Stokes equations are closed by transition SST turbulence model. Results are presented in the form of aerodynamic coefficients of lift and drag as well as flow visualizations by velocity contours. Main observations on aerodynamic performances of biplane wings are presented and discussed.
PB  - University of East Sarajevo, Faculty of Mechanical Engineering
C3  - 5th International Scientific Conference on Mechanical Engineering Technologies and Applications COMETa 2020
T1  - Numerical analysis of aerodynamic performances of single vs. double wing (biplane) configuration
EP  - 323
SP  - 315
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4213
ER  - 

@conference{
author = "Svorcan, Jelena and Milić, Milica and Vasić, Vladimir",
year = "2020",
abstract = "The number of light aircrafts is constantly increasing and this trend will continue in the future with further development of composite technology and hybrid and purely electric propulsion systems. Since these vehicles enable fast and comfortable transport to destinations in the region and will be employed more and more in urban environments, any improvement of aerodynamic performances together with size reduction would be more than beneficial. Therefore, this paper presents a comparative study of aerodynamic performances of two different configurations of lifting surfaces, single vs. double wing since biplane configuration enables more compact aircraft design. Lift and drag coefficients are obtained by simulating flow by finite volume method in ANSYS Fluent. The flow is considered incompressible and viscous. Reynolds-averaged Navier-Stokes equations are closed by transition SST turbulence model. Results are presented in the form of aerodynamic coefficients of lift and drag as well as flow visualizations by velocity contours. Main observations on aerodynamic performances of biplane wings are presented and discussed.",
publisher = "University of East Sarajevo, Faculty of Mechanical Engineering",
journal = "5th International Scientific Conference on Mechanical Engineering Technologies and Applications COMETa 2020",
title = "Numerical analysis of aerodynamic performances of single vs. double wing (biplane) configuration",
pages = "323-315",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4213"
}

Svorcan, J., Milić, M.,& Vasić, V.. (2020). Numerical analysis of aerodynamic performances of single vs. double wing (biplane) configuration. in 5th International Scientific Conference on Mechanical Engineering Technologies and Applications COMETa 2020
University of East Sarajevo, Faculty of Mechanical Engineering., 315-323.
https://hdl.handle.net/21.15107/rcub_machinery_4213

Svorcan J, Milić M, Vasić V. Numerical analysis of aerodynamic performances of single vs. double wing (biplane) configuration. in 5th International Scientific Conference on Mechanical Engineering Technologies and Applications COMETa 2020. 2020;:315-323.
https://hdl.handle.net/21.15107/rcub_machinery_4213 .

Svorcan, Jelena, Milić, Milica, Vasić, Vladimir, "Numerical analysis of aerodynamic performances of single vs. double wing (biplane) configuration" in 5th International Scientific Conference on Mechanical Engineering Technologies and Applications COMETa 2020 (2020):315-323,
https://hdl.handle.net/21.15107/rcub_machinery_4213 .

TY  - CONF
AU  - Milić, Milica
AU  - Svorcan, Jelena
AU  - Zorić, Nemanja
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4026
AB  - Winglet is an additional surface in a form of vertical or horizontal extension of the wing. The shape of winglet changed during the development period and depending on the type of aircraft on which they were installed. Due to its benefits and influence on aircraft performance during the flight, the standard end of wing has been replaced by new configurations. The geometry of the winglet depends on the required performance and is unique in each application. The angle (or edge) of the winglet, its inner or outer angle, and its size and shape are critical parameters for wing performance. Winglets can increase the range and reduce fuel consumption. With split winglets, the expected reduction in fuel consumption is up to 1.5 %. This type of additional surface on the wing increases the effective aspect ratio of the wing without increasing the structural load. This paper investigates the performance of the wing with and without the split winglets and constant airfoil b737c-il at angles of attack (0, 10o and 20o), at the speed of 0.8 Mach. Wing model was designed in CATIA P3 V5 software package. The aerodynamic drag and lift coefficients CD and CL, as well as their change with the angle of attack, were obtained by finite volume method (FVM) in ANSYS Fluent software.
PB  - Belgrade : Military Technical Institute
C3  - 9th International Scientific Conference on Defensive Technologies (OTEH 2020), Belgrade, Serbia
T1  - Numerical Simulation of Aerodynamic Performance of Wing with Split Winglets
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4026
ER  - 

@conference{
author = "Milić, Milica and Svorcan, Jelena and Zorić, Nemanja",
year = "2020",
abstract = "Winglet is an additional surface in a form of vertical or horizontal extension of the wing. The shape of winglet changed during the development period and depending on the type of aircraft on which they were installed. Due to its benefits and influence on aircraft performance during the flight, the standard end of wing has been replaced by new configurations. The geometry of the winglet depends on the required performance and is unique in each application. The angle (or edge) of the winglet, its inner or outer angle, and its size and shape are critical parameters for wing performance. Winglets can increase the range and reduce fuel consumption. With split winglets, the expected reduction in fuel consumption is up to 1.5 %. This type of additional surface on the wing increases the effective aspect ratio of the wing without increasing the structural load. This paper investigates the performance of the wing with and without the split winglets and constant airfoil b737c-il at angles of attack (0, 10o and 20o), at the speed of 0.8 Mach. Wing model was designed in CATIA P3 V5 software package. The aerodynamic drag and lift coefficients CD and CL, as well as their change with the angle of attack, were obtained by finite volume method (FVM) in ANSYS Fluent software.",
publisher = "Belgrade : Military Technical Institute",
journal = "9th International Scientific Conference on Defensive Technologies (OTEH 2020), Belgrade, Serbia",
title = "Numerical Simulation of Aerodynamic Performance of Wing with Split Winglets",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4026"
}

Milić, M., Svorcan, J.,& Zorić, N.. (2020). Numerical Simulation of Aerodynamic Performance of Wing with Split Winglets. in 9th International Scientific Conference on Defensive Technologies (OTEH 2020), Belgrade, Serbia
Belgrade : Military Technical Institute..
https://hdl.handle.net/21.15107/rcub_machinery_4026

Milić M, Svorcan J, Zorić N. Numerical Simulation of Aerodynamic Performance of Wing with Split Winglets. in 9th International Scientific Conference on Defensive Technologies (OTEH 2020), Belgrade, Serbia. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_4026 .

Milić, Milica, Svorcan, Jelena, Zorić, Nemanja, "Numerical Simulation of Aerodynamic Performance of Wing with Split Winglets" in 9th International Scientific Conference on Defensive Technologies (OTEH 2020), Belgrade, Serbia (2020),
https://hdl.handle.net/21.15107/rcub_machinery_4026 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Baltić, Marija
AU  - Ivanov, Toni
AU  - Peković, Ognjen
AU  - Milić, Milica
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4298
AB  - Three-dimensional, unsteady, turbulent, incompressible flow simulations of isolated vertical-axis
wind turbine (VAWT) high-solidity rotor consisting of three straight blades at seven different
operational regimes have been performed in ANSYS FLUENT by finite volume method. Aerodynamic analysis of this type of wind turbine rotors is interesting and extremely complex because the blades pass through a wide range of angles-of-attack during one revolution, and many flow instabilities as well as flow separation occur. Furthermore, the simulation of high-solidity rotors is even more difficult, due to the significant interference between the blades, or more precisely, between the wake of the advancing blade and the retracting blade. The rotational motion of the blades is solved by the unsteady Sliding Mesh (SM) approach. Flow field is modeled by Unsteady Reynolds Averaged Navier-Stokes (URANS) equations with k-ω SST turbulence model and hybrid Scale-Adaptive Simulation (SAS) used for closure. Quantitative and qualitative examinations of the obtained numerical results are done by comparison to the available wind tunnel data. In particular, aerodynamic loads acting on a blade per revolution as well as power coefficient curves are investigated in detail and comparisons between the two turbulence models are made. Final distinguishing between the simpler and more complex approach to turbulence modeling is made by visualizations of turbulent flow structures separating from the blades throughout a cycle at both non-optimal (starting) and optimal working regimes.
PB  - Belgrade : Serbian Society of Mechanics
C3  - Proceedings / The 7th International Congress of Serbian Society of Mechanics Sremski Karlovci, June 24-26, 2019
T1  - Numerical evaluation of aerodynamic loads and performances of vertical-axis wind turbine rotor
SP  - M3d
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4298
ER  - 

@conference{
author = "Svorcan, Jelena and Baltić, Marija and Ivanov, Toni and Peković, Ognjen and Milić, Milica",
year = "2019",
abstract = "Three-dimensional, unsteady, turbulent, incompressible flow simulations of isolated vertical-axis
wind turbine (VAWT) high-solidity rotor consisting of three straight blades at seven different
operational regimes have been performed in ANSYS FLUENT by finite volume method. Aerodynamic analysis of this type of wind turbine rotors is interesting and extremely complex because the blades pass through a wide range of angles-of-attack during one revolution, and many flow instabilities as well as flow separation occur. Furthermore, the simulation of high-solidity rotors is even more difficult, due to the significant interference between the blades, or more precisely, between the wake of the advancing blade and the retracting blade. The rotational motion of the blades is solved by the unsteady Sliding Mesh (SM) approach. Flow field is modeled by Unsteady Reynolds Averaged Navier-Stokes (URANS) equations with k-ω SST turbulence model and hybrid Scale-Adaptive Simulation (SAS) used for closure. Quantitative and qualitative examinations of the obtained numerical results are done by comparison to the available wind tunnel data. In particular, aerodynamic loads acting on a blade per revolution as well as power coefficient curves are investigated in detail and comparisons between the two turbulence models are made. Final distinguishing between the simpler and more complex approach to turbulence modeling is made by visualizations of turbulent flow structures separating from the blades throughout a cycle at both non-optimal (starting) and optimal working regimes.",
publisher = "Belgrade : Serbian Society of Mechanics",
journal = "Proceedings / The 7th International Congress of Serbian Society of Mechanics Sremski Karlovci, June 24-26, 2019",
title = "Numerical evaluation of aerodynamic loads and performances of vertical-axis wind turbine rotor",
pages = "M3d",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4298"
}

Svorcan, J., Baltić, M., Ivanov, T., Peković, O.,& Milić, M.. (2019). Numerical evaluation of aerodynamic loads and performances of vertical-axis wind turbine rotor. in Proceedings / The 7th International Congress of Serbian Society of Mechanics Sremski Karlovci, June 24-26, 2019
Belgrade : Serbian Society of Mechanics., M3d.
https://hdl.handle.net/21.15107/rcub_machinery_4298

Svorcan J, Baltić M, Ivanov T, Peković O, Milić M. Numerical evaluation of aerodynamic loads and performances of vertical-axis wind turbine rotor. in Proceedings / The 7th International Congress of Serbian Society of Mechanics Sremski Karlovci, June 24-26, 2019. 2019;:M3d.
https://hdl.handle.net/21.15107/rcub_machinery_4298 .

Svorcan, Jelena, Baltić, Marija, Ivanov, Toni, Peković, Ognjen, Milić, Milica, "Numerical evaluation of aerodynamic loads and performances of vertical-axis wind turbine rotor" in Proceedings / The 7th International Congress of Serbian Society of Mechanics Sremski Karlovci, June 24-26, 2019 (2019):M3d,
https://hdl.handle.net/21.15107/rcub_machinery_4298 .