Axial displacements in ball screw mechanisms with two and four contact-pointPenkov, Igor; Aleksandrov, DmitriInternational review of mechanical engineering2011 / p. 1213-1218 https://www.researchgate.net/publication/289762576_Axial_displacements_in_ball_screw_mechanisms_with_two_and_four_contact-point

Efficiency optimization of mini unmanned multicopterPenkov, Igor; Aleksandrov, DmitriInternational review of aerospace engineering2017 / p. 277-281 : ill https://doi.org/10.15866/irease.v10i5.12132

Energy consumption of mini UAV helicopters with different number of rotorsAleksandrov, Dmitri; Penkov, Igor11th International Symposium "Topical Problems in the Field of Electrical and Power Engineering." Doctoral School of Energy and Geotechnology II : Pärnu, Estonia, January 16-21, 20122012 / p. 259-262 : ill

Energy saving types of mini unmanned aerial vehiclesAleksandrov, Dmitri; Penkov, Igor9th International Symposium "Topical problems in the field of electrical and power engineering". Doctoral school of energy and geotechnology. II : Pärnu, Estonia, June 14-19, 20102010 / p. 117-120 : ill

Fluid flow optimization on semiautomatic code marker baseAleksandrov, Dmitri; Penkov, Igor8th International Symposium "Topical Problems in the Field of Electrical and Power Engineering" : Doctoral School of Energy and Geotechnology. II : [Pärnu, January 11-16, 2010 : proceedings]2010 / p. 306-308 : ill

Fluid flow optimization on semiautomatic code marker baseAleksandrov, Dmitri; Penkov, IgorJournal of energy and power engineering2012 / p. 916-920 : ill

Increasing of power characteristics of mini UAV helicopter by changing of its geometrical parametersAleksandrov, Dmitri; Penkov, IgorMachines, technologies, materials : [virtual journal]2012 / p. 30-32 : ill

Influence of nozzle geometry on fluid flow parametersPenkov, Igor; Aleksandrov, DmitriInternational journal of applied mechanics and engineering2020 / p. 215-222 : ill https://doi.org/10.2478/ijame-2020-0060 Journal metrics at Scopus Article at Scopus

Light-weight multicopter structural design for energy saving = Kergklassi multikopteri energiatarbe vähendamise konstruktsioonilised lahendusedAleksandrov, Dmitri2013 http://www.ester.ee/record=b2994326*est

Optimal gap distance between rotors of mini quadrotor helicopterAleksandrov, Dmitri; Penkov, IgorProceedings of the 8th International Conference of DAAAM Baltic Industrial Engineering, 19-21st April 2012, Tallinn, Estonia. 12012 / p. 251-255 : ill

Optimization mini unmanned helicopter energy consumption by changing geometrical parameters of coaxial rotor pairsAleksandrov, Dmitri; Penkov, Igor12th International Symposium "Topical Problems in the Field of Electrical and Power Engineering." Doctoral School of Energy and Geotechnology II : Kuressaare, Estonia, June 11-16, 20122012 / p. 139-141 : ill

Optimization of lift force of mini quadrotor helicopter by changing of gap size between rotorsAleksandrov, Dmitri; Penkov, IgorMechatronic systems and materials IV2013 / p. 226-231 : ill

Propeller shrouding influence on lift force of mini unmanned quadcopterPenkov, Igor; Aleksandrov, DmitriInternational journal of automotive and mechanical engineering2017 / p. 4486-4495 : ill https://doi.org/10.15282/ijame.14.3.2017.7.0354

Rotor lifting force optimization by changing dimensions of rim around itAleksandrov, Dmitri; Penkov, Igor13th International Symposium "Topical Problems in the Field of Electrical and Power Engineering." Doctoral School of Energy and Geotechnology II : Pärnu, Estonia, January 14-19, 20132013 / p. 292-295 : ill