Author

Relly Victoria Virgil Petrescu

Department of Transportation, Traffic and Logistics, Bucharest Polytechnic University, Bucharest, Romania

106 articles in our journals

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Research ArticleOpen accessLagrange II Dynamics and that of Forces Exemplified on a Basic Robot, 2 DoFRelly Victoria Virgil PetrescuThe paper presents two dynamic methods applied to a basic articulated robot, 2 DoF, the first being an original adaptation of the type II Lagrange equations and the second being a dynamic method based on the influence of the forces in the robot mechanism. Both methods are original, as they were designed and applied by the author to a 2 … …American Journal of Engineering and Applied Sciences, Vol. 16, Issue 2 · 26 Jul 2023 · 5,752 accessesView PDF Cite

Research ArticleOpen accessThe Study of the Dynamics of a Basic DoF RobotRelly Victoria Virgil PetrescuThe paper presents the study of the dynamics of a general DoF robot, highlighting some important new aspects in the dynamic design of a certain DoF robot. An improved method of positioning the robot in inverse kinematics is presented, then some new aspects in approaching the forces acting on a robot, but also regarding the determination of loads of the … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 4 · 16 Dec 2022 · 5,338 accessesView PDF Cite

Research ArticleOpen accessThe Study of the Dynamics of a Cebâşev ManipulatorRelly Victoria Virgil PetrescuThe paper presents a new method for determining the dynamic parameters of a Cebâşev conveyor mechanism, solvable in two steps. In the first step, the classic method of preserving the kinetic energy of the entire mechanism is used to determine the rotating mass of the Cebâşev mechanism denoted by J*, this being the dynamic rotating mass of the entire mechanism … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 4 · 28 Nov 2022 · 5,663 accessesView PDF Cite

Research ArticleOpen accessOne can Achieve the Nuclear Fission Reaction of Lithium by Accelerated Hydrogen Nuclei or NeutronsRelly Victoria Virgil Petrescu, Florian Ion Tiberiu PetrescuThe idea circulated among physicists that in the upper area of the physical elements the fission reaction can be obtained and in the lower one the fusion reaction occurs. In the presented paper we want to impose another rule, namely the obtaining in the lower part of the physical elements of the fission and fusion nuclear reactions, with the obvious … …American Journal of Engineering and Applied Sciences, Vol. 14, Issue 3 · 7 Sep 2021 · 9,516 accessesView PDF Cite

Review ArticleOpen accessSome Aspects of Modern DronesRelly Victoria Virgil PetrescuToday drones have become so important that everyday life can no longer be conceived without them. The paper wishes to present some essential aspects regarding modern drones, their capabilities and their uses. Drones and minnies drones have penetrated deep into technology, industry, agriculture, the military and police area, security services, security and control, aerial surveillance, signaling, aerial filming, cartography, danger … …Journal of Aircraft and Spacecraft Technology, Vol. 5, Issue 1 · 16 Jun 2021 · 8,444 accessesView PDF Cite

Review ArticleOpen accessNews in Bone Modeling for Customized Hybrid Biological Prostheses DevelopmentRelly Victoria Virgil Petrescu, Raffaella Aversa, Valeria Perrotta et al.The complex biomechanics and morphologies of the femur proximal epiphysis are presented. The nature and fine morphology of the femur head and its structural behavior have been investigated. Isotropic and orthotropic trabecular structures have been associated with oriented compression and tensioned areas of the femur head FEM models. These isotropic/orthotropic trabecular morphologies and their allocations govern the stress and strain … …OnLine Journal of Biological Sciences, Vol. 21, Issue 2 · 14 Jun 2021 · 6,351 accessesView PDF Cite

Review ArticleOpen accessSome Aspects Related to DronesRelly Victoria Virgil PetrescuDrones developed very quickly and today have come to conquer airspace even more than conventional aviation. Whether they are unmanned or with a crew, whether they are on autopilot, usually remotely coordinated, or remote-controlled or even manned, drones in their diversity today have taken on a very large scale and they will surely develop rapidly and further, being the ones … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 23 Sep 2020 · 7,110 accessesView PDF Cite

Research ArticleOpen accessA Theory that Wants to Obtain Particles Opposite to Protons, Having a Negative ChargeRelly Victoria Virgil Petrescu, Florian Ion Tiberiu PetrescuThe present paper focuses on the possibility of obtaining antimatter, in the main purpose of then extracting massive energy by controlled fusion of matter and newly obtained antimatter. Since the most well-known charged nucleon (of the matter) is the proton, we imagined another possibility to obtain a particle opposite to it, having the same main characteristics but the opposite charge, … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 11 Sep 2020 · 7,432 accessesView PDF Cite

Review ArticleOpen accessFishing for “16 Psyche”Relly Victoria Virgil Petrescu16 Psyche is one of the most massive asteroids in the asteroid belt. This object has a diameter of over 200 km and contains about 1% of the mass of the entire asteroid belt. It is believed to be the exposed iron core of a protoplanet and is the most massive metallic M-type asteroid. It was discovered by the Italian … …Journal of Aircraft and Spacecraft Technology, Vol. 4, Issue 1 · 10 Sep 2020 · 8,369 accessesView PDF Cite

Research ArticleOpen accessInteraction Between an Accelerated Electron and a Quark up to Transform the Quark up into a Down Quark, so that the Proton Practically Becomes a NeutronRelly Victoria Virgil Petrescu, Florian Ion Tiberiu PetrescuThe paper briefly examines the possibility of transforming a proton into a neutron, by introducing an accelerated electron inside the proton, in order to penetrate it into one of the two up quarks in order to transform it into a down quark, thus transforming the initial state of the proton into a new state of a neutron. Such an achievement … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 3 Sep 2020 · 7,853 accessesView PDF Cite