TY  - CONF
AU  - Kosić, Boris
AU  - Jeli, Zorana
AU  - Stakić, Aleksandra
AU  - Rusov, Marko
AU  - Bekrić, Dragoljub
AU  - Trišović, Zaga
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7680
AB  - Compliant mechanisms have several advantages and disadvantages compared to classical mechanisms, primarily because those mechanisms are essentially one part that doesn't require any lubrication and there is also no backslash between movable parts. But due to the mechanism design principles, the strength of the overall structure and movement range can be significantly limited.
PB  - Serbian Society for Geometry and Graphics (SUGIG)
C3  - The 9th International Scientific Conference on Geometry and Graphics MoNGeometrija 2023 June 7-10 Novi Sad, Serbia
T1  - ANALISYS OF A FOUR-BAR LINKAGE COMPLAINT MECHANISM FOR RECEIVING APPROXIMATELY STRAIGHT-LINE MOTION
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7680
ER  - 

@conference{
author = "Kosić, Boris and Jeli, Zorana and Stakić, Aleksandra and Rusov, Marko and Bekrić, Dragoljub and Trišović, Zaga",
year = "2023",
abstract = "Compliant mechanisms have several advantages and disadvantages compared to classical mechanisms, primarily because those mechanisms are essentially one part that doesn't require any lubrication and there is also no backslash between movable parts. But due to the mechanism design principles, the strength of the overall structure and movement range can be significantly limited.",
publisher = "Serbian Society for Geometry and Graphics (SUGIG)",
journal = "The 9th International Scientific Conference on Geometry and Graphics MoNGeometrija 2023 June 7-10 Novi Sad, Serbia",
title = "ANALISYS OF A FOUR-BAR LINKAGE COMPLAINT MECHANISM FOR RECEIVING APPROXIMATELY STRAIGHT-LINE MOTION",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7680"
}

Kosić, B., Jeli, Z., Stakić, A., Rusov, M., Bekrić, D.,& Trišović, Z.. (2023). ANALISYS OF A FOUR-BAR LINKAGE COMPLAINT MECHANISM FOR RECEIVING APPROXIMATELY STRAIGHT-LINE MOTION. in The 9th International Scientific Conference on Geometry and Graphics MoNGeometrija 2023 June 7-10 Novi Sad, Serbia
Serbian Society for Geometry and Graphics (SUGIG)..
https://hdl.handle.net/21.15107/rcub_machinery_7680

Kosić B, Jeli Z, Stakić A, Rusov M, Bekrić D, Trišović Z. ANALISYS OF A FOUR-BAR LINKAGE COMPLAINT MECHANISM FOR RECEIVING APPROXIMATELY STRAIGHT-LINE MOTION. in The 9th International Scientific Conference on Geometry and Graphics MoNGeometrija 2023 June 7-10 Novi Sad, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7680 .

Kosić, Boris, Jeli, Zorana, Stakić, Aleksandra, Rusov, Marko, Bekrić, Dragoljub, Trišović, Zaga, "ANALISYS OF A FOUR-BAR LINKAGE COMPLAINT MECHANISM FOR RECEIVING APPROXIMATELY STRAIGHT-LINE MOTION" in The 9th International Scientific Conference on Geometry and Graphics MoNGeometrija 2023 June 7-10 Novi Sad, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7680 .

TY  - JOUR
AU  - Elayeb, Abdelnaser A.
AU  - Janković, Milan
AU  - Dikić, Stefan
AU  - Bekrić, Dragoljub
AU  - Balać, Igor
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6805
AB  - Tensile properties of thin plate specimens made from short carbon fiber
reinforced PET-G material are experimentally evaluated for various raster angles
(printing directions). In additive manufacturing (AM), raster angle is recognized as one 
of the key printing parameters which strongly influences the strength and stiffness of the
final part. The relatively high average value of ultimate tensile strength was obtained 
for specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 52.2 MPa and 25.4 MPa, respectively. 
Similarly, noticeably higher average value of modulus of elasticity was obtained for 
specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 4752 MPa and 1569 MPa, respectively. 
Scanning electron microscopy (SEM) was used for analysis of specimens’ fracture 
surfaces. SEM images revealed considerable volume fraction of voids (porosity). Тhe 
porosity, together with weak bonding between two adjacent rasters, could be one of key 
factors for poor tensile properties of samples printed with rasters perpendicular to 
direction of load application (90° raster angle)
PB  - Belgrade : Association for ETRAN Society
T2  - Science of Sintering
T1  - Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material
DO  - 10.2298/SOS220916010E
ER  - 

@article{
author = "Elayeb, Abdelnaser A. and Janković, Milan and Dikić, Stefan and Bekrić, Dragoljub and Balać, Igor",
year = "2023",
abstract = "Tensile properties of thin plate specimens made from short carbon fiber
reinforced PET-G material are experimentally evaluated for various raster angles
(printing directions). In additive manufacturing (AM), raster angle is recognized as one 
of the key printing parameters which strongly influences the strength and stiffness of the
final part. The relatively high average value of ultimate tensile strength was obtained 
for specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 52.2 MPa and 25.4 MPa, respectively. 
Similarly, noticeably higher average value of modulus of elasticity was obtained for 
specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 4752 MPa and 1569 MPa, respectively. 
Scanning electron microscopy (SEM) was used for analysis of specimens’ fracture 
surfaces. SEM images revealed considerable volume fraction of voids (porosity). Тhe 
porosity, together with weak bonding between two adjacent rasters, could be one of key 
factors for poor tensile properties of samples printed with rasters perpendicular to 
direction of load application (90° raster angle)",
publisher = "Belgrade : Association for ETRAN Society",
journal = "Science of Sintering",
title = "Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material",
doi = "10.2298/SOS220916010E"
}

Elayeb, A. A., Janković, M., Dikić, S., Bekrić, D.,& Balać, I.. (2023). Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material. in Science of Sintering
Belgrade : Association for ETRAN Society..
https://doi.org/10.2298/SOS220916010E

Elayeb AA, Janković M, Dikić S, Bekrić D, Balać I. Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material. in Science of Sintering. 2023;.
doi:10.2298/SOS220916010E .

Elayeb, Abdelnaser A., Janković, Milan, Dikić, Stefan, Bekrić, Dragoljub, Balać, Igor, "Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material" in Science of Sintering (2023),
https://doi.org/10.2298/SOS220916010E . .

TY  - JOUR
AU  - Marjanović, Milica
AU  - Bajić, Danica
AU  - Perković, Srđa
AU  - Fidanovski, Bojana
AU  - Burzić, Zijah
AU  - Matija, Lidija
AU  - Bekrić, Dragoljub
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3514
AB  - A possibility was examined to enhance carbon-epoxy laminated composite mechanical properties by introducing a small concentration of reinforcing nanostructures - multi-wall onion-shaped fullerene-like nanoparticles of tungsten disulfide IF-WS2, and its multi-layer hollow nanotubes, INT-WS2, both known for their outstanding thermal, chemical, and mechanical resistance. Composite structures were prepared using a unidirectional prepreg of strong carbon fibers and epoxy resin, poly (vinyl butyral) solution in ethanol with ultrasonically dispersed WS2 nanostructures in it. Particle size analysis has been performed to evaluate the quality of IF-WS2 nanoparticles. SEM/EDS analysis was applied to observe the nanostructures, their dispersion in the composite, and the fracture zone after mechanical resistance tests of the prepared composite samples. Thorough mechanical tests were performed on a set of specimens with different fiber orientations: tensile test, bending test, and interlaminar shear test. The encouraging results were obtained, indicating that these newly designed light-weight composites are applicable for the automotive and nautical industry, unmanned aerial vehicles, and military aircrafts.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites
EP  - 1044
IS  - 12
SP  - 1034
VL  - 29
DO  - 10.1080/1536383X.2021.1928644
ER  - 

@article{
author = "Marjanović, Milica and Bajić, Danica and Perković, Srđa and Fidanovski, Bojana and Burzić, Zijah and Matija, Lidija and Bekrić, Dragoljub",
year = "2021",
abstract = "A possibility was examined to enhance carbon-epoxy laminated composite mechanical properties by introducing a small concentration of reinforcing nanostructures - multi-wall onion-shaped fullerene-like nanoparticles of tungsten disulfide IF-WS2, and its multi-layer hollow nanotubes, INT-WS2, both known for their outstanding thermal, chemical, and mechanical resistance. Composite structures were prepared using a unidirectional prepreg of strong carbon fibers and epoxy resin, poly (vinyl butyral) solution in ethanol with ultrasonically dispersed WS2 nanostructures in it. Particle size analysis has been performed to evaluate the quality of IF-WS2 nanoparticles. SEM/EDS analysis was applied to observe the nanostructures, their dispersion in the composite, and the fracture zone after mechanical resistance tests of the prepared composite samples. Thorough mechanical tests were performed on a set of specimens with different fiber orientations: tensile test, bending test, and interlaminar shear test. The encouraging results were obtained, indicating that these newly designed light-weight composites are applicable for the automotive and nautical industry, unmanned aerial vehicles, and military aircrafts.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites",
pages = "1044-1034",
number = "12",
volume = "29",
doi = "10.1080/1536383X.2021.1928644"
}

Marjanović, M., Bajić, D., Perković, S., Fidanovski, B., Burzić, Z., Matija, L.,& Bekrić, D.. (2021). Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 29(12), 1034-1044.
https://doi.org/10.1080/1536383X.2021.1928644

Marjanović M, Bajić D, Perković S, Fidanovski B, Burzić Z, Matija L, Bekrić D. Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites. in Fullerenes Nanotubes and Carbon Nanostructures. 2021;29(12):1034-1044.
doi:10.1080/1536383X.2021.1928644 .

Marjanović, Milica, Bajić, Danica, Perković, Srđa, Fidanovski, Bojana, Burzić, Zijah, Matija, Lidija, Bekrić, Dragoljub, "Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites" in Fullerenes Nanotubes and Carbon Nanostructures, 29, no. 12 (2021):1034-1044,
https://doi.org/10.1080/1536383X.2021.1928644 . .

TY  - JOUR
AU  - Bekrić, Dragoljub
AU  - Mitrović, Časlav
AU  - Cvetković, Dragan
AU  - Bengin, Aleksandar
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1013
AB  - Efficiency and justification of hypergeometric functions application in achieving simple formulas used in numerical simulation of helicopter rotor blades theory are presented in this paper. Basic equations of stream field over helicopter rotor are formulated, their decomposition is made and mean induced velocity harmonics are integrally presented. Theoretical basis of hypergeometric function application in transformation of integral equations of k-bladed rotor average induced velocity into special functions follows. The necessary conditions for transformation hypergeometric functions into special functions are defined. Variants of integral transformation of expressions obtained are presented by a numerical simulation and solutions are found. This approach to cecure the effectivity of hypergeometric function application in helicopter rotor blades theory by numerical simulation provides a synthetic method, which can be used to define helicopter k-bladed main rotor optimal characteristics.
T2  - Strojniski Vestnik/Journal of Mechanical Engineering
T1  - Effectivity of Hypergeometric Function Application in the Numerical Simulation of the Helicopter Rotor Blades Theory
EP  - 22
IS  - 1
SP  - 18
VL  - 56
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1013
ER  - 

@article{
author = "Bekrić, Dragoljub and Mitrović, Časlav and Cvetković, Dragan and Bengin, Aleksandar",
year = "2010",
abstract = "Efficiency and justification of hypergeometric functions application in achieving simple formulas used in numerical simulation of helicopter rotor blades theory are presented in this paper. Basic equations of stream field over helicopter rotor are formulated, their decomposition is made and mean induced velocity harmonics are integrally presented. Theoretical basis of hypergeometric function application in transformation of integral equations of k-bladed rotor average induced velocity into special functions follows. The necessary conditions for transformation hypergeometric functions into special functions are defined. Variants of integral transformation of expressions obtained are presented by a numerical simulation and solutions are found. This approach to cecure the effectivity of hypergeometric function application in helicopter rotor blades theory by numerical simulation provides a synthetic method, which can be used to define helicopter k-bladed main rotor optimal characteristics.",
journal = "Strojniski Vestnik/Journal of Mechanical Engineering",
title = "Effectivity of Hypergeometric Function Application in the Numerical Simulation of the Helicopter Rotor Blades Theory",
pages = "22-18",
number = "1",
volume = "56",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1013"
}

Bekrić, D., Mitrović, Č., Cvetković, D.,& Bengin, A.. (2010). Effectivity of Hypergeometric Function Application in the Numerical Simulation of the Helicopter Rotor Blades Theory. in Strojniski Vestnik/Journal of Mechanical Engineering, 56(1), 18-22.
https://hdl.handle.net/21.15107/rcub_machinery_1013

Bekrić D, Mitrović Č, Cvetković D, Bengin A. Effectivity of Hypergeometric Function Application in the Numerical Simulation of the Helicopter Rotor Blades Theory. in Strojniski Vestnik/Journal of Mechanical Engineering. 2010;56(1):18-22.
https://hdl.handle.net/21.15107/rcub_machinery_1013 .

Bekrić, Dragoljub, Mitrović, Časlav, Cvetković, Dragan, Bengin, Aleksandar, "Effectivity of Hypergeometric Function Application in the Numerical Simulation of the Helicopter Rotor Blades Theory" in Strojniski Vestnik/Journal of Mechanical Engineering, 56, no. 1 (2010):18-22,
https://hdl.handle.net/21.15107/rcub_machinery_1013 .

TY  - GEN
AU  - Milosavljević, Anđelka
AU  - Petronić, Sanja
AU  - Radaković, Zoran
AU  - Bekrić, Dragoljub
AU  - Polić, Suzana
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5493
PB  - University of Belgrade, Faculty of Mechanical Engineering
T2  - Tehničko rešenje, Univerzitet u Beogradu, Mašinski fakultet, 2010., prihvaćeno odlukom Istraživačko-stručnog veća Mašinskog fakulteta pod brojem 134/2; Projekat TR 14067
T1  - Usvojeni parametri procesa rezanja laserom austenitnih materijala
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5493
ER  - 

@misc{
author = "Milosavljević, Anđelka and Petronić, Sanja and Radaković, Zoran and Bekrić, Dragoljub and Polić, Suzana",
year = "2010",
publisher = "University of Belgrade, Faculty of Mechanical Engineering",
journal = "Tehničko rešenje, Univerzitet u Beogradu, Mašinski fakultet, 2010., prihvaćeno odlukom Istraživačko-stručnog veća Mašinskog fakulteta pod brojem 134/2; Projekat TR 14067",
title = "Usvojeni parametri procesa rezanja laserom austenitnih materijala",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5493"
}

Milosavljević, A., Petronić, S., Radaković, Z., Bekrić, D.,& Polić, S.. (2010). Usvojeni parametri procesa rezanja laserom austenitnih materijala. in Tehničko rešenje, Univerzitet u Beogradu, Mašinski fakultet, 2010., prihvaćeno odlukom Istraživačko-stručnog veća Mašinskog fakulteta pod brojem 134/2; Projekat TR 14067
University of Belgrade, Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_5493

Milosavljević A, Petronić S, Radaković Z, Bekrić D, Polić S. Usvojeni parametri procesa rezanja laserom austenitnih materijala. in Tehničko rešenje, Univerzitet u Beogradu, Mašinski fakultet, 2010., prihvaćeno odlukom Istraživačko-stručnog veća Mašinskog fakulteta pod brojem 134/2; Projekat TR 14067. 2010;.
https://hdl.handle.net/21.15107/rcub_machinery_5493 .

Milosavljević, Anđelka, Petronić, Sanja, Radaković, Zoran, Bekrić, Dragoljub, Polić, Suzana, "Usvojeni parametri procesa rezanja laserom austenitnih materijala" in Tehničko rešenje, Univerzitet u Beogradu, Mašinski fakultet, 2010., prihvaćeno odlukom Istraživačko-stručnog veća Mašinskog fakulteta pod brojem 134/2; Projekat TR 14067 (2010),
https://hdl.handle.net/21.15107/rcub_machinery_5493 .

TY  - JOUR
AU  - Mitrović, Časlav
AU  - Bengin, Aleksandar
AU  - Cvetković, Dragan
AU  - Bekrić, Dragoljub
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1078
AB  - This paper presents on airfoil model which provides a method for optimal main helicopter rotor projection by viscous effect and unsteady lift simulation through algorithm and set of program entireties, applicable to the ideological and mail project of helicopter rotor. Based on real rotors theoretical consideration and the, numerical analysis considerations in this paper can be applied with sufficient accuracy in the analysis and constructive realizations of helicopter rotor in real conditions. The method for unsteady viscous flow simulations by inviscid techniques is developed. The aim of this paper is to determine helicopter rotor blade lift with the highest possible accuracy by using a singularity method and to define an optimal conception model of aerodynamic rotor projection corresponding to rotor behavior in real conditions and with sunk:lent quality nom the aspect of engineer use.
PB  - Assoc Mechanical Engineers Technicians Slovenia, Ljubljana
T2  - Strojniski Vestnik-Journal of Mechanical Engineering
T1  - An Optimal Main Helicopter Rotor Projection Model Obtained by Viscous Effects and Unsteady Lift Simulation
EP  - 367
IS  - 6
SP  - 357
VL  - 56
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1078
ER  - 

@article{
author = "Mitrović, Časlav and Bengin, Aleksandar and Cvetković, Dragan and Bekrić, Dragoljub",
year = "2010",
abstract = "This paper presents on airfoil model which provides a method for optimal main helicopter rotor projection by viscous effect and unsteady lift simulation through algorithm and set of program entireties, applicable to the ideological and mail project of helicopter rotor. Based on real rotors theoretical consideration and the, numerical analysis considerations in this paper can be applied with sufficient accuracy in the analysis and constructive realizations of helicopter rotor in real conditions. The method for unsteady viscous flow simulations by inviscid techniques is developed. The aim of this paper is to determine helicopter rotor blade lift with the highest possible accuracy by using a singularity method and to define an optimal conception model of aerodynamic rotor projection corresponding to rotor behavior in real conditions and with sunk:lent quality nom the aspect of engineer use.",
publisher = "Assoc Mechanical Engineers Technicians Slovenia, Ljubljana",
journal = "Strojniski Vestnik-Journal of Mechanical Engineering",
title = "An Optimal Main Helicopter Rotor Projection Model Obtained by Viscous Effects and Unsteady Lift Simulation",
pages = "367-357",
number = "6",
volume = "56",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1078"
}

Mitrović, Č., Bengin, A., Cvetković, D.,& Bekrić, D.. (2010). An Optimal Main Helicopter Rotor Projection Model Obtained by Viscous Effects and Unsteady Lift Simulation. in Strojniski Vestnik-Journal of Mechanical Engineering
Assoc Mechanical Engineers Technicians Slovenia, Ljubljana., 56(6), 357-367.
https://hdl.handle.net/21.15107/rcub_machinery_1078

Mitrović Č, Bengin A, Cvetković D, Bekrić D. An Optimal Main Helicopter Rotor Projection Model Obtained by Viscous Effects and Unsteady Lift Simulation. in Strojniski Vestnik-Journal of Mechanical Engineering. 2010;56(6):357-367.
https://hdl.handle.net/21.15107/rcub_machinery_1078 .

Mitrović, Časlav, Bengin, Aleksandar, Cvetković, Dragan, Bekrić, Dragoljub, "An Optimal Main Helicopter Rotor Projection Model Obtained by Viscous Effects and Unsteady Lift Simulation" in Strojniski Vestnik-Journal of Mechanical Engineering, 56, no. 6 (2010):357-367,
https://hdl.handle.net/21.15107/rcub_machinery_1078 .

TY  - JOUR
AU  - Bengin, Aleksandar
AU  - Mitrović, Časlav
AU  - Cvetković, Dragan
AU  - Bekrić, Dragoljub
AU  - Pegić, Slavko
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/789
AB  - This paper presents the numerical model developed for rotor blade aerodynamics loads calculation. The model is unsteady and fully three-dimensional. Helicopter blade is assumed to be rigid, and its motion during rotation is modeled in the manner that rotor presents a model of rotor of helicopter Aerospatiale SA 341 "Gazelle" (the blade is attached to the hub by flap, pitch and pseudo lead-lag hinges). Flow field around the blade is observed in succession of several azimuth locations. Flow field around helicopter rotor is modeled as fully three-dimensional, unsteady and potential. Blade aerodynamics is modeled using a lifting surface model. Rotor wake is generated from the straight elements of constant vorticity, released from the trailing edge, at fixed azimuth angles. These vortices represent both trailed and shed wake components, and are allowed to freely convect along local velocity vectors. Wake is modeled as free one, and its shape at certain moment can be calculated from simple kinematics laws applied on collocation points of the wake. Wake distortion is calculated only in the rotor near-field, i.e. in finite number of rotor revolutions. Vortex elements are modeled with vortex core. The radius of the vortex core is assumed independent of time, and it depends on circulation gradient at the point of vortex element released from the blade.
T2  - Strojniski Vestnik/Journal of Mechanical Engineering
T1  - Improved solution approach for aerodynamics loads of helicopter rotor blade in forward flight
EP  - 178
IS  - 3
SP  - 170
VL  - 54
UR  - https://hdl.handle.net/21.15107/rcub_machinery_789
ER  - 

@article{
author = "Bengin, Aleksandar and Mitrović, Časlav and Cvetković, Dragan and Bekrić, Dragoljub and Pegić, Slavko",
year = "2008",
abstract = "This paper presents the numerical model developed for rotor blade aerodynamics loads calculation. The model is unsteady and fully three-dimensional. Helicopter blade is assumed to be rigid, and its motion during rotation is modeled in the manner that rotor presents a model of rotor of helicopter Aerospatiale SA 341 "Gazelle" (the blade is attached to the hub by flap, pitch and pseudo lead-lag hinges). Flow field around the blade is observed in succession of several azimuth locations. Flow field around helicopter rotor is modeled as fully three-dimensional, unsteady and potential. Blade aerodynamics is modeled using a lifting surface model. Rotor wake is generated from the straight elements of constant vorticity, released from the trailing edge, at fixed azimuth angles. These vortices represent both trailed and shed wake components, and are allowed to freely convect along local velocity vectors. Wake is modeled as free one, and its shape at certain moment can be calculated from simple kinematics laws applied on collocation points of the wake. Wake distortion is calculated only in the rotor near-field, i.e. in finite number of rotor revolutions. Vortex elements are modeled with vortex core. The radius of the vortex core is assumed independent of time, and it depends on circulation gradient at the point of vortex element released from the blade.",
journal = "Strojniski Vestnik/Journal of Mechanical Engineering",
title = "Improved solution approach for aerodynamics loads of helicopter rotor blade in forward flight",
pages = "178-170",
number = "3",
volume = "54",
url = "https://hdl.handle.net/21.15107/rcub_machinery_789"
}

Bengin, A., Mitrović, Č., Cvetković, D., Bekrić, D.,& Pegić, S.. (2008). Improved solution approach for aerodynamics loads of helicopter rotor blade in forward flight. in Strojniski Vestnik/Journal of Mechanical Engineering, 54(3), 170-178.
https://hdl.handle.net/21.15107/rcub_machinery_789

Bengin A, Mitrović Č, Cvetković D, Bekrić D, Pegić S. Improved solution approach for aerodynamics loads of helicopter rotor blade in forward flight. in Strojniski Vestnik/Journal of Mechanical Engineering. 2008;54(3):170-178.
https://hdl.handle.net/21.15107/rcub_machinery_789 .

Bengin, Aleksandar, Mitrović, Časlav, Cvetković, Dragan, Bekrić, Dragoljub, Pegić, Slavko, "Improved solution approach for aerodynamics loads of helicopter rotor blade in forward flight" in Strojniski Vestnik/Journal of Mechanical Engineering, 54, no. 3 (2008):170-178,
https://hdl.handle.net/21.15107/rcub_machinery_789 .