What is a UFO?

Petrescu, Relly Victoria; Aversa, Raffaella; Akash, Bilal; Corchado, Juan M.; Berto, Filippo; Mirsayar, MirMilad; Apicella, Antonio; Petrescu, Florian Ion Tiberiu

doi:10.3844/jastsp.2017.80.90

Cited by 31 publications

(19 citation statements)

References 7 publications

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“…It is meant to defend not only America but the whole planet from an eventual alien invasion, attacks with different weapons, missiles and explosives that might attack us in the future, but it will have to have the ability to protect us from possible too large bodies (asteroids, comets, meteorites, etc.) that float through space and which could come closer to our planet (our mothership), representing for her and us a real danger 2017e;2017f;2017g;2017h;2017i;2017j;2017k;2017l;2017m;2017n).…”

Section: Discussionmentioning

confidence: 99%

Nikola TESLA

Petrescu¹,

Aversa²,

Apicella³

et al. 2017

American Journal of Engineering and Applied Sciences

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Nicolae Tesla, has remained and spent most of his life, making it hard to pronounce "Teslea"), is considered to be the inventor of the alternating current and uncovered cableless power transmission. It is attributed to the transmission of energy through monophase, biphasic, polyphase alternating currents and transmission of non-wired energy by electromagnetic waves (oscillations) in the industrial alternating current frequency band (102)(103)(104)(105)(106)(107)(108)(109)), overlapping band with radio frequencies (the radio band being even more extensive than that of alternative industrial currents). He discovered the spinning magnetic field (simultaneously with the Italian Galileo Ferraris, 1847-1897), Tesla invented both the biphasic and polyphase alternating electric currents and studied the high-frequency current. He built the first two-phase asynchronous motors, the electric generators, the high-frequency electric transformer and so on. In atomic, he researched the atomic nucleus fission, with the help of the high voltage electrostatic generator and was also a pioneer of nuclear power based on nuclear fission reactions. (Einstein was contacted and visited personally by his research in this field). By working permanently in industrial bands, Tesla has inevitably given over radio waves whose frequencies overlap with those of alternating currents. Even though Marconi made the first radio broadcasts over the ocean, a little before Tesla, yet at the basis of his achievements were all the patents and works of Tesla, which Marconi had studied in detail. Tesla is also the first and foremost builder of the world's first and largest radio stations. In 1899, Tesla builds a large 200kw radio station in Colorado, conducts wireless telegraphy transmissions over 1,000km and manages to get 12 million volts of volumes to produce the first artificial lightning (lightning). He drives the first unmanned ship by radio, from a distance to a public demonstration on the ocean, in New York. Transmits concentrated energy through long-distance electromagnetic waves, the energy it uses to power remote consumers or remote control. Tesla deals with natural energy, the production of artificial earthquakes based on huge energies using very low frequency waves (Tesla is the first to accurately determine the resonance frequency of our planet), acceleration of nuclear particles to very high energies and targeting them or microwaves concentrated in beam (deadly rays) capable of reaching and destroying a target at a great distance (airplane, rocket, ship, etc.). He proposes to build a defensive shield to defend America, but even the planet, if needed (the current US defense shield of the Earth is a continuation of his work). It imagines, presents and designs wireless audiovideo transmissions (but was too early to implement them massively, technologies were a long way from discovering it; the pieces were then lamps and tubes, there were no chips or integrated circuits, not even transistors).

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Section: Discussionmentioning

confidence: 99%

Nikola TESLA

Petrescu¹,

Aversa²,

Apicella³

et al. 2017

American Journal of Engineering and Applied Sciences

Self Cite

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“…The robots are able to process integrated circuits sizes micro and nano, on which the man they can be seen only with electron microscopy. Dyeing parts in toxic environments, working in chemical and radioactive environments or at depths and pressures at the deep bottom of huge oceans, or conquest of cosmic space and visiting some new exoplanets (PETRESCU et al, 2017a;PETRESCU et al, 2017b;;PETRESCU et al, 2017c;PETRESCU et al, 2017d;PETRESCU et al, 2017e;PETRESCU et al, 2017f;PETRESCU et al, 2017g;PETRESCU et al, 2017h;PETRESCU et al, 2017i;PETRESCU et al, 2017j;PETRESCU et al, 2017k;PETRESCU et al, 2017l;PETRESCU et al, 2017lm;PETRESCU et al, 2017n;PETRESCU et al, 2017o;PETRESCU et al, 2017p;PETRESCU et al, 2017q;PETRESCU et al, 2017r;PETRESCU et al, 2017s;PETRESCU et al, 2017t;PETRESCU et al, 2017u;PETRESCU et al, 2017v;PETRESCU et al, 2017w;PETRESCU et al, 2017x;PETRESCU et al, 2017y;PETRESCU et al, 2017z;PETRESCU et al, 2017ab;PETRESCU et al, 2017ac;PETRESCU et al, 2017ad; PETRESCU et al, 2017ae), are with robots systems possible and were turned into from the dream in reality because of use of mechanical platforms sequential gearbox.…”

Section: Independent Journal Of Management and Production (Ijmandp)mentioning

confidence: 99%

An algorithm to solve the inverse kinematics to a stewart platform

Petrescu

2020

Ind. Jour. Manag. & Prod.

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Mechanical systems in motion type parallel structures are solid, fast and accurate. Between mobile systems parallel the best known and used system is that of a Stewart platform, as being and the oldest system, quickly, solid and accurate. The paper presents a few main elements of the Stewart platforms. In the case where a motto element consists of a structure composed of two elements in a relative movement from the point of view of the train of propulsion and especially in the dynamic calculations, it is more convenient to represent the motto element as a single moving item. The paper presents an exact, original analytical geometry method for determining the kinematic and dynamic parameters of a parallel mobile structure. Compared with other methods already known, the presented method has the great advantage of being an exact analytical method of calculation and not one iterative-approximately.

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“…Each industrial achievement has backed theoretical and experimental computer-assisted research, which solves increasingly complex problems with advanced computing programs using increasingly specialized software Mirsayar et al, 2017;Cao et al, 2013;Dong et al, 2013;De Melo et al, 2012;Garcia et al, 2007;Garcia-Murillo et al, 2013;He et al, 2013;Lee, 2013;Lin et al, 2013;Liu et al, 2013;Padula and Perdereau, 2013;Perumaal and Jawahar, 2013;Petrescu and Petrescu, 1995a;1995b;1997a;1997b;1997c;2002a;2002b;2003;2005a;2005b;2005c;2005d;2005e, 2016a2013;2012a;2012b;2011;Petrescu et al, 2009;2016 a-e;2017e;2017f;2017g;2017h;2017i;2017j;2017k;2017l;2017m;2017n;2017o;2017p;2017q;2017r;2017s;…”

Section: Introductionmentioning

confidence: 99%

Some Aspects of the Structure of Planar Mechanisms

Petrescu¹,

Aversa²,

Akash³

et al. 2018

American Journal of Engineering and Applied Sciences

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The machine is a technical system made up of distinct kinematic component parts (called kinematic elements) which, following the imprinting of movements imposed on an element or elements (considered as leading elements), cause movements to all other kinematic elements in order to execute a useful mechanical thing, or transforming some form of energy into mechanical energy. It follows from the previous definition, three essential characteristics of the machine: the machine is a technical system; its kinematic elements have determined (desmodromic) movements; either to perform either a useful mechanical thing, calling it a lucrative machine, or transforming some form of energy into mechanical energy, bearing the name of a motor car. The lucrative machines are beam or LASER motors, etc. The most used mechanisms in machine building were and still maintain those that operate in a plane or in parallel planes. For this reason, new analytical methods have been developed and developed to determine all the essential aspects of these mechanisms in order to improve the design of machine components. For this reason, it is necessary to present a general presentation of the mechanism of the design of the mechanisms, the present paper dealing only with the first aspect, namely the structure of the planar mechanisms. The most common mechanisms are planar, with bars, toothed, with cams, with a mortar cross, with chains, with belts, with tracks, with bolts, with liquids (hydraulic or sonic), with air (pneumatic). However, spacecraft with universal cardan shaft (universal joint) and cardanic transmission, with hyperboloidal gears (with cross axles), with pivots (spherical couplings), especially steering and suspension mechanisms, tripod mechanisms, mechanisms with space cams, screw and nut mechanisms, robots, serial and parallel systems, steppers, etc. The mechanism, as we have already shown, is composed of kinematic elements connected by kinematic joints (or couplings).

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What is a UFO?

Cited by 31 publications

References 7 publications

Nikola TESLA

Nikola TESLA

An algorithm to solve the inverse kinematics to a stewart platform

Some Aspects of the Structure of Planar Mechanisms

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