Florian Ion Petrescu's Books

Mountains of Romania

Germany 2013

By: Florian Ion Petrescu

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Breaza town in Prahova Valley was categorized and ranked as second in the world after Davos (Switzerland), in terms of air quality. With a mild climate, similar, but with an air slightly more powerful, are classified and resorts, Predeal, Poiana Brasov, Tusnad, Borsec, Campina, Busteni, Azuga, Sinaia, etc.. The Carpathian Mountains are the eastern wing of the great Central Mountain System of Europe, curving 1500 km ( 900 miles) along the borders of Austria, the Czech Republic, Slovakia, Poland, Ukraine, Romania, Serbia and Montenegro and northern Hungary. Romania contains by far the largest area of the Carpathians, and forms the eastern and southern boundaries of the region. 55.2% of the Carpathian region is located within Romania. 47.4% of Romanian territory is part of the Carpathian mountain range. The Romanian Carpathians are divided into three groups: Eastern Carpathians, Southern Carpathians and Western Carpathians. The highest peaks are in the Southern Carpathians - Moldoveanu (2544 m/8,346 feet) and Negoiu (2535 m/8,316 feet) The Carpathians' ensemble is characterized by its varied landscape owing to the different types of relief particularities (glacial, karstic, riverine, structural-lithological), the alternation of mountainous and depressions units, gorges and valleys and the diversity and configuration of the vegetation. They contain the highest concentration of large carnivores in Europe, with estimates of over 6000 brown bears, 2500 wolves and some 1750 lynx living in the region. The Romanian Carpathians represent an exceptional tourist attraction. The flora of the Carpathians includes 1350 species, among which 116 are endemic. The Carpathian floral year begins at the end of February - the beginning of March, with the colsfoot, the snowdrop, the hollow wort and the pheasant's eye. The rose bay flowers at the beginning of June, when the mountain slopes above the juniper belt become red being covered by the splendid carpet of rose bay. It is indeed a sp

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ISBN 10

3848267497

ISBN 13

9783848267491

The Aviation History

New Aircraft I - Color

By: Relly Victoria Petrescu,Florian Ion Petrescu

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The Aviation History

New Aircraft I - Color

By: Relly Victoria Petrescu,Florian Ion Petrescu

According to Aulus Gellius, Archytas, the Ancient Greek philosopher, mathematician, astronomer, statesman, and strategist, was reputed to have designed and built, around 400 BC, the first artificial, self-propelled flying device, a bird-shaped model propelled by a jet of what was probably steam, said to have actually flown some 200 metres. This machine, which its inventor called The Pigeon, may have been suspended on a wire or pivot for its flight. The 9th century Muslim Berber inventor, Abbas Ibn Firnas's glider is considered by John Harding to be the first attempt at heavier-than-air flight in aviation history. In 1010 AD an English monk, Eilmer of Malmesbury purportedly piloted a primitive gliding craft from the tower of Malmesbury Abbey. Eilmer was said to have flown over 200 yards (180 m) before landing, breaking both his legs. He later remarked that the only reason he did not fly further was because he forgot to give it a tail, and he was about to add one when his concerned Abbot forbade him any further experiments. Bartolomeu de Gusmão, Brazil and Portugal, an experimenter with early airship designs. In 1709 demonstrated a small airship model before the Portuguese court, but never succeeded with a full-scale model. Pilâtre de Rozier, Paris, France, first trip by a human in a free-flying balloon (the Montgolfière), built by Joseph-Michel and Jacques-Étienne Montgolfier, . 9 km covered in 25 minutes on October 15, 1783. (see Le Globe below for first unmanned flight, 2 months earlier) Professor Jacques Charles and Les Frères Robert, two French brothers, Anne-Jean and Nicolas-Louis, variously shared three milestones of pioneering flight: Le Globe, the first unmanned hydrogen gas balloon flew on 26 August 1783. On 1 December 1783 La Charlière piloted by Jacques Charles and Nicolas-Louis Robert made the first manned hydrogen balloon flight. In 1951, the Lockheed XFV-1 and the Convair XFY tailsitters were both designed around the Allison YT40 turboprop engine drivin

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218

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ISBN 10

3848266393

ISBN 13

9783848266395

New Aircraft II

Germany 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

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New Aircraft II

Germany 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

The Boeing 787 is the new Boeing aircraft. It is currently in its development phase. Designers of this plane is made lot of research for this aircraft should be particularly fuel-efficient through the use of composite materials in the construction of the device and use of new reactors. It should enable airlines to reduce by nearly 20% in fuel consumption compared to aircraft of this size. This aircraft are expected to compete in the world of aircraft types and gain the admiration of the public . The Airbus product line started with the A300, the world\\\'s first twin-aisle, twin-engined aircraft. A shorter, re-winged, re-engined variant of the A300 is known as the A310. Building on its success, Airbus launched the A320, particularly notable for being the first commercial jet to utilize a fly-by-wire control system. The A320 has been, and continues to be, a great commercial success. The A318 and A319 are shorter derivatives with some of the latter under construction for the corporate business jet market as Airbus Corporate Jets. A stretched version is known as the A321. The A320 family\\\'s primary competitor is the Boeing 737 family. Development of a new manned ultralight FanWing is ongoing and presently planned for a first public flight at Oshkosh 2013. Reaction Engines has announced that is has successfully tested the key pre-cooler component of its revolutionary SABRE engine crucial to the development of its SKYLON spaceplane. The company claims that craft equipped with SABRE engines will be able to fly to any destination on Earth in under 4 hours, or travel directly into space. The McDonnell Douglas (now Boeing) F/A-18 Hornet is a twin-engine supersonic, all-weather carrier-capable multirole fighter jet, designed to dogfight and attack ground targets (F/A for Fighter/Attack). The Lockheed F-117 Nighthawk was a single-seat, twin-engine stealth ground-attack aircraft formerly operated by the United States Air Force (USAF). NASA has been exploring a variety of opti

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138

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ISBN 10

384820892X

ISBN 13

9783848208920

New Aircraft II Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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New Aircraft II Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

The Boeing Vertol CH-46 Sea Knight is a medium-lift tandem rotor transport helicopter. It is used by the United States Marine Corps (USMC) to provide all-weather, day-or-night assault transport of combat troops, supplies and equipment. Additional tasks include combat support, search and rescue (SAR), support for forward refueling and rearming points, CASEVAC and Tactical Recovery of Aircraft and Personnel (TRAP). Canada also operated the Sea Knight, designated as CH-113, and operated them in the SAR role until 2004. Other export customers include Japan, Sweden, and Saudi Arabia. The commercial version is the BV 107-II, commonly referred to simply as the "Vertol". The Boeing CH-47 Chinook is an American twin-engine, tandem rotor heavy-lift helicopter. With a top speed of 170 knots (196 mph, 315 km/h) it is faster than contemporary utility and attack helicopters of the 1960s. The Sikorsky CH-53E Super Stallion is the largest and heaviest helicopter in the United States military. As the Sikorsky S-80 it was developed from the CH-53 Sea Stallion, mainly by adding a third engine, a seventh blade to the main rotor and canting the tail rotor 20 degrees. It was built by Sikorsky Aircraft for the United States Marine Corps. The less common MH-53E Sea Dragon fills the United States Navy's need for long range mine sweeping or Airborne Mine Countermeasures (AMCM) missions, and perform heavy-lift duties for the Navy. Under development is the CH-53K, which will be equipped with new engines, new composite rotor blades, and a wider cabin. The Bell Boeing V-22 Osprey is an American multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft. The V-22 originated from the United States Department of Defense Joint-service Vertical take-off/landing Experimenta

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ISBN 10

3848259850

ISBN 13

9783848259854

Camshaft Precision Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Camshaft Precision Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

In the first chapter the authors present an original method to calculate the efficiency of the cams mechanisms. The second chapter presents an original method in determining a general, dynamic and differential equation for the motion of machines and mechanisms, particularized for the mechanisms with rotation cams and followers. The third chapter presents an original method to determine the general dynamics of mechanisms with rotation cams and followers, particularized to the plate translated follower. First, it presents the dynamics kinematics. Then it solves the Lagrange equation and using an original dynamic model with one degree of freedom, with variable internal amortization, it makes the dynamic analysis. The fourth chapter briefly presents an original method for determining the dynamics of mechanisms with rotation cam and translated follower with roll. First, one presents the dynamics kinematics. Then one performs the dynamic analysis of a few models, for some movement laws, imposed on the follower, by the designed cam profile. The fifth chapter presents an original method to determine the dynamic parameters at the classic distribution, and a new method is presented in the sixth chapter. The seventh chapter presents an original method to determine the dynamic parameters at the camshaft with rotary cam and translated follower with roll.

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ISBN 10

3848224879

ISBN 13

9783848224876

The Design of Gearings with High Efficiency

By: Florian PETRESCU,Relly PETRESCU

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The Design of Gearings with High Efficiency

By: Florian PETRESCU,Relly PETRESCU

Development and diversification of machines and mechanisms with applications in all areas of scientific research requires new systematization and improvement of existing mechanical systems by creating new mechanisms adapted to the modern requirements; the gearing mechanisms are found today everywhere: in the industry of machinery construction, in energy industry, in aeronautics and aerospace, in electronics& Electrical, in oil industry, in mechatronics and robotics, etc. In this context this book attempts to bring a contribution to science and technology applied in the kinematic and dynamic analysis and synthesis of mechanisms with gearings. The book presents an original method to determine the efficiency of the gearing; the originality of this method relies on the eliminated friction modulus. With the relations presented in this paper, one can synthesize the gear's mechanisms; the best efficiency can be obtained with the internal gearing when the drive wheel 1 is the ring.

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Lulu.com

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ISBN 10

1446790541

ISBN 13

9781446790540

Green Energy

Germany 2012

By: Relly Victoria Petrescu,Florian Ion Petrescu

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Green Energy

Germany 2012

By: Relly Victoria Petrescu,Florian Ion Petrescu

Energy development is the effort to provide sufficient primary energy sources and secondary energy forms for supply, cost, impact on air pollution and water pollution, mitigation of climate change with renewable energy. Technologically advanced societies have become increasingly dependent on external energy sources for transportation, the production of many manufactured goods, and the delivery of energy services. This energy allows people who can afford the cost to live under otherwise unfavorable climatic conditions through the use of heating, ventilation, and/or air conditioning. Level of use of external energy sources differs across societies, as do the climate, convenience, levels of traffic congestion, pollution and availability of domestic energy sources. All terrestrial energy sources except nuclear, geothermal and tidal are from current solar insolation or from fossil remains of plant and animal life that relied directly and indirectly upon sunlight, respectively. Ultimately, solar energy itself is the result of the Sun\\\\\\\'s nuclear fusion. Geothermal power from hot, hardened rock above the magma of the Earth\\\\\\\'s core is the result of the decay of radioactive materials present beneath the Earth\\\\\\\'s crust, and nuclear fission relies on man-made fission of heavy radioactive elements in the Earth\\\\\\\'s crust; in both cases these elements were produced in supernova explosions before the formation of the solar system. Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished). In 2008, about 19% of global final energy consumption came from renewables, with 13% coming from traditional biomass, which is mainly used for heating, and 3.2% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 2.7% and are growing very rapidly. The share of renewables in electricity gen

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118

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ISBN 10

3848223635

ISBN 13

9783848223633

Cold Nuclear Fusion

Germany 2012

By: Florian Ion Petrescu

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Cold Nuclear Fusion

Germany 2012

By: Florian Ion Petrescu

Nuclear fusion is the process by which two or more atomic nuclei join together, or "fuse", to form a single heavier nucleus. During this process, matter is not conserved because some of the mass of the fusing nuclei is converted to energy which is released. The binding energy of the resulting nucleus is greater than the binding energy of each of the nuclei that fused to produce it. Fusion is the process that powers active stars. Creating the required conditions for fusion on Earth is very difficult, to the point that it has not been accomplished at any scale for protium, the common light isotope of hydrogen that undergoes natural fusion in stars. In nuclear weapons, some of the energy released by an atomic bomb (fission bomb) is used for compressing and heating a fusion fuel containing heavier isotopes of hydrogen, and also sometimes lithium, to the point of "ignition". At this point, the energy released in the fusion reactions is enough to briefly maintain the reaction. Fusion-based nuclear power experiments attempt to create similar conditions using far lesser means, although to date these experiments have failed to maintain conditions needed for ignition long enough for fusion to be a viable commercial power source.

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102

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3848228521

ISBN 13

9783848228522

Lockheed Martin

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Lockheed Martin

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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114

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ISBN 10

3848260530

ISBN 13

9783848260539

Gear Solutions Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Gear Solutions Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

In the first chapter it determines precisely, the dynamics-efficiency, but at the gears transmissions, the dynamics efficiency is the same like the mechanical efficiency; this is a greater advantage of the gears transmissions. This advantage, specifically of the gear's mechanisms, may be found at the cam mechanisms with plate followers as well. In the second chapter one presents shortly an original method to obtain the efficiency of the geared transmissions in function of the contact ratio. With the presented relations it can make the dynamic synthesis of the geared transmissions having in view increasing the efficiency of gearing mechanisms in work. We calculate the efficiency of a geared transmission, having in view the fact that at one moment there are several couples of teeth in contact, and not just one. The start model has got four pairs of teeth in contact (4 couples) concomitantly. The best efficiency can be obtained with the internal gearing when the drive wheel 1 is the ring; the minimum efficiency will be obtained when the drive wheel 1 of the internal gearing has external teeth. For the external gearing, the best efficiency is obtained when the bigger wheel is the drive wheel; when we decrease the normal angle alpha0, the contact ratio increases and the efficiency increases as well. The efficiency increases too, when the number of teeth of the drive wheel 1 increases (when z1 increases). Nearly all the models studied the dynamic on gearing with axes parallel, is based on mechanical models of classical (known) who is studying spinning vibration of shafts gears and determine their own beats and strains of shafts spinning; sure that they are very useful, but are not actually join formed of the two teeth in contact (or more pairs of teeth in contact), that is not treated physiology of the mechanism itself with toothed gears for a view that the phenomena are dynamic taking place in top gear flat; model [1] just try this so, but the whole theory is base

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3848267675

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9783848267675

Northrop

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Northrop

By: Florian Ion Petrescu,Relly Victoria Petrescu

The Northrop Grumman (formerly Ryan Aeronautical) RQ-4 Global Hawk (known as Tier II+ during development) is an unmanned aerial vehicle (UAV) used by the United States Air Force and Navy and the German Air Force as a surveillance aircraft. The Northrop Grumman B-2 Spirit (also known as the Stealth Bomber) is an American strategic bomber, featuring low observable stealth technology designed for penetrating dense anti-aircraft defenses; it is able to deploy both conventional and nuclear weapons. The bomber has a crew of two and can drop up to eighty 500 lb (230 kg)-class JDAM GPS-guided bombs, or sixteen 2,400 lb (1,100 kg) B83 nuclear bombs. The B-2 is the only aircraft that can carry large air-to-surface standoff weapons in a stealth configuration. The Northrop T-38 Talon is a twin-engine supersonic jet trainer. It was the world\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'s first supersonic trainer and is also the most produced. The T-38 remains in service as of 2012 in air forces throughout the world. The United States Air Force (USAF) is the largest operator of the T-38. In addition to training USAF pilots, the T-38 is used by NASA. The Grumman C-2 Greyhound is a twin-engine, high-wing cargo aircraft, designed to carry supplies and mail to and from aircraft carriers of the United States Navy. Its primary mission is carrier onboard delivery (COD). The aircraft provides critical logistics support to carrier strike groups. The aircraft is mainly used to transport high-priority cargo, mail and passengers between carriers and shore bases, and can deliver items like jet engines, and special stores. The Grumman E-2 Hawkeye is an American all-weather, aircraft carrier-capable tactical airborne early warning (AEW) aircraft. This twin-turboprop aircraft was designed and developed during the late 1950s and early 1960s by the Grumman Aircraft Company for the United States Navy as a replacement for the earlier E-1 Tracer, which was rapidly becoming obsolete. The aircraft

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142

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ISBN 10

3848209322

ISBN 13

9783848209323

A New Atomic Model

Germany 2012

By: Florian Ion Petrescu

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A New Atomic Model

Germany 2012

By: Florian Ion Petrescu

The movement of an electron around the atomic nucleus has today a great importance in many engineering fields. Electronics, aeronautics, micro and nanotechnology, electrical engineering, optics, lasers, nuclear power, computing, equipment and automation, telecommunications, genetic engineering, bioengineering, special processing, modern welding, robotics, energy and electromagnetic wave field is today only a few of the many applications of electronic engineering. This book presents, shortly, a new and original relation (20 & 20') who determines the radius with that, the electron is running around the nucleus of an atom. In the picture number 1 one presents some electrons that are moving around the nucleus of an atom. One utilizes, two times the Lorenz relation (5), the Niels Bohr generalized equation (7), and a mass relation (4) which it was deduced from the kinematics energy relation written in two modes: classical (1) and coulombian (2). Equalizing the mass relation (4) with Lorenz relation (5) one obtains the form (6) which is a relation between the squared electron speed (v2) and the radius (r). The second relation (8), between v2 and r, it was obtained by equalizing the mass of Bohr equation (7) and the mass of Lorenz relation (5). In the system (8) - (6) eliminating the squared electron speed (v2), it determines the radius r, with that the electron is moving around the atomic nucleus; see the relation (20). For a Bohr energetically level (n=a constant value), one determines now two energetically below levels, which form an electronic layer. The author realizes by this a new atomic model, or a new quantum theory, which explains the existence of electron-clouds without spin. Writing the kinematics energy relation in two modes, classical (1) and coulombian (2) one determines the relation (3). From the relation (3), determining explicit the mass of the electron, it obtains the form (4).

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3848218941

ISBN 13

9783848218943

A New Doppler Effect

Germany 2012

By: Florian Ion Petrescu

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A New Doppler Effect

Germany 2012

By: Florian Ion Petrescu

The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842 in Prague, is the change in frequency of a wave for an observer moving relative to the source of the wave. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. The received frequency is higher (compared to the emitted frequency) during the approach, it is identical at the instant of passing by, and it is lower during the recession. The relative changes in frequency can be explained as follows. When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave. Therefore each wave takes slightly less time to reach the observer than the previous wave. Therefore the time between the arrival of successive wave crests at the observer is reduced, causing an increase in the frequency. While they are travelling, the distance between successive wave fronts is reduced; so the waves \\\\\\\"bunch together\\\\\\\". Conversely, if the source of waves is moving away from the observer, each wave is emitted from a position farther from the observer than the previous wave, so the arrival time between successive waves is increased, reducing the frequency. The distance between successive wave fronts is increased, so the waves "spread out". For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source is relative to the medium in which the waves are transmitted. The total Doppler Effect may therefore result from motion of the source, motion of the observer, or motion of the medium. Each of these effects is analyzed separately. For waves which do not require a medium, such as light or gravity in general relativity, only the relative difference in velocity between the observer and the source needs to be considered.

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3848229900

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9783848229901

Gear Solutions

Germany 2012

By: Relly Victoria Petrescu,Florian Ion Petrescu

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Gear Solutions

Germany 2012

By: Relly Victoria Petrescu,Florian Ion Petrescu

Development and diversification of machines and mechanisms with applications in all areas of scientific research requires new systematization and improvement of existing mechanical systems by creating new mechanisms adapted to the modern requirements, which involve more complex topological structures. Modern industry, the practice of engineering design and manufacture increasingly rely more on scientific research results and practical. The processes of robotisation of today define and influence the emergence of new industries, with applications in specific environmental conditions, handling of objects in outer space, and are leading teleoperator in disciplines such as medicine, automations, nuclear energetic, etc. In this context this book attempts to bring a contribution to science and technology applied in the kinematic and dynamic analysis and synthesis of mechanisms with gearings.

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3848231417

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9783848231416

Northrop Color

Germany 2013

By: Relly Victoria Petrescu,Florian Ion Petrescu

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Northrop Color

Germany 2013

By: Relly Victoria Petrescu,Florian Ion Petrescu

The Northrop Grumman (formerly Ryan Aeronautical) RQ-4 Global Hawk (known as Tier II+ during development) is an unmanned aerial vehicle (UAV) used by the United States Air Force and Navy and the German Air Force as a surveillance aircraft. The Northrop Grumman B-2 Spirit (also known as the Stealth Bomber) is an American strategic bomber, featuring low observable stealth technology designed for penetrating dense anti-aircraft defenses; it is able to deploy both conventional and nuclear weapons. The bomber has a crew of two and can drop up to eighty 500 lb (230 kg)-class JDAM GPS-guided bombs, or sixteen 2,400 lb (1,100 kg) B83 nuclear bombs. The B-2 is the only aircraft that can carry large air-to-surface standoff weapons in a stealth configuration. The BQM-74 Chukar is a series of aerial target drones produced by Northrop. The Chukar has gone through three major revisions, including the initial MQM-74A Chukar I, the MQM-74C Chukar II, and the BQM-74C Chukar III. They are recoverable, remote controlled, subsonic aerial target, capable of speeds up to Mach 0.86 and altitudes from 30 to 40,000 ft (10 to 12,000 m). Northrop Grumman Corporation (NYSE: NOC) is an American global aerospace and defense technology company formed by the 1994 purchase of Grumman by Northrop. The company was the fourth-largest defense contractor in the world as of 2010, and the largest builder of naval vessels. Northrop Grumman employs over 75,000 people worldwide. Its 2010 annual revenue is reported at US$34 billion. Northrop Grumman ranks #72 on the 2011 Fortune 500 list of America's largest corporations and ranks in the top ten military-friendly employers. It has its headquarters in Falls Church, Virginia. Separate sectors, such as Aerospace Systems, produce aircraft for the US and other nations. The B-2 Spirit strategic bomber, the E-8C Joint STARS surveillance aircraft, the RQ-4 Global Hawk, and the T-38 Talon supersonic trainer, are used by the US Air Force. The US Army uses Northrop Grum

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142

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3848267985

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9783848267989

Mechanical Engineering Design I Color

Germany 2013

By: Relly Victoria Petrescu,Florian Ion Petrescu

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Mechanical Engineering Design I Color

Germany 2013

By: Relly Victoria Petrescu,Florian Ion Petrescu

Mechanical Engineering Design is the first edition of a largest old preocupation of the authors in this field. It presents the design of the Otto Motors, kinematics and dynamics, a new Otto engine, the efficiency of the engines with internal combustion, the design of the V engines, the design of the distribution mechanisms, the design of the power train and the design of the drivetrain. It presents as well the design of the planetary trains with their real efficiency. The book has 14 chapters. Since the predominant component in all chapters is the dynamics, the book might be called and dynamic design in mechanical engineering.

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114

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3848266571

ISBN 13

9783848266579

Lockheed Martin Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Lockheed Martin Color

Germany 2013

By: Florian Ion Petrescu,Relly Victoria Petrescu

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114

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3848230739

ISBN 13

9783848230730

Camshaft Precision

Germany 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Camshaft Precision

Germany 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

In the first chapter the authors present an original method to calculate the efficiency of the cams mechanisms. The second chapter presents an original method in determining a general, dynamic and differential equation for the motion of machines and mechanisms, particularized for the mechanisms with rotation cams and followers. The third chapter presents an original method to determine the general dynamics of mechanisms with rotation cams and followers, particularized to the plate translated follower. First, it presents the dynamics kinematics. Then it solves the Lagrange equation and using an original dynamic model with one degree of freedom, with variable internal amortization, it makes the dynamic analysis. The fourth chapter briefly presents an original method for determining the dynamics of mechanisms with rotation cam and translated follower with roll. First, one presents the dynamics kinematics. Then one performs the dynamic analysis of a few models, for some movement laws, imposed on the follower, by the designed cam profile. The fifth chapter presents an original methods to determine the dynamic parameters at the classic distribution, and a new method is presented in the sixth chapter. The seventh chapter presents an original methods to determine the dynamic parameters at the camshaft with rotary cam and translated follower with roll.

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3848241382

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9783848241385

Mechanical Engineering Design I

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Mechanical Engineering Design I

By: Florian Ion Petrescu,Relly Victoria Petrescu

Mechanical Engineering Design I, is the first edition of a largest old preocupation of the authors in this field. It presents the design of the Otto Motors, kinematics and dynamics, a new Otto engine, the efficiency of the engines with internal combustion, the design of the V engines, the design of the distribution mechanisms, the design of the power train and the design of the drivetrain. It presents as well the design of the planetary trains with their real efficiency. The book has 14 chapters. Since the predominant component in all chapters is the dynamics, the book might be called and dynamic design in mechanical engineering.

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114

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3848230143

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9783848230143

The Aviation History

By: Florian Ion Petrescu,Relly Victoria Petrescu

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The Aviation History

By: Florian Ion Petrescu,Relly Victoria Petrescu

Larger STOVL designs were considered, the Armstrong Whitworth AW.681 cargo aircraft was under development when cancelled in 1965. The Dornier Do 31 got as far as three experimental aircraft before cancellation in 1970. Although mostly a VTOL design, the V-22 Osprey has increased payload when taking off from a short runway. The Hawker Siddeley Harrier, colloquially the \\\"Harrier Jump Jet\\\", was developed in the 1960s and was the first generation of the Harrier series of aircraft. It was the first operational close-support and reconnaissance fighter aircraft with Vertical/Short Takeoff and Landing (V/STOL) capabilities and the only truly successful V/STOL design of the many that arose in that era. The Harrier was produced directly from the Hawker Siddeley Kestrel prototypes following the cancellation of a more advanced supersonic aircraft, the Hawker Siddeley P.1154. The Royal Air Force (RAF) ordered the Harrier GR.1 and GR.3 (fig. 84) variants in the late 1960s. It was exported to the United States as the AV-8A, for use by the US Marine Corps (USMC), in the 1970s. A Zeppelin is a type of rigid airship pioneered by the German Count Ferdinand von Zeppelin in the early 20th century. It was based on designs he had outlined in 1874 and detailed in 1893. His plans were reviewed by committee in 1894 and patented in the United States on 14 March 1899. Given the outstanding success of the Zeppelin design, the term zeppelin in casual use came to refer to all rigid airships. Zeppelins were operated by the Deutsche Luftschiffahrts-AG (DELAG). DELAG, the first commercial airline, served scheduled flights before World War I. After the outbreak of war, the German military made extensive use of Zeppelins as bombers and scouts.

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218

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BoD – Books on Demand

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ISBN 10

3848230771

ISBN 13

9783848230778

Camshaft Precision

Germany 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Camshaft Precision

Germany 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

In the first chapter the authors present an original method to calculate the efficiency of the cams mechanisms. The second chapter presents an original method in determining a general, dynamic and differential equation for the motion of machines and mechanisms, particularized for the mechanisms with rotation cams and followers. The third chapter presents an original method to determine the general dynamics of mechanisms with rotation cams and followers, particularized to the plate translated follower. First, it presents the dynamics kinematics. Then it solves the Lagrange equation and using an original dynamic model with one degree of freedom, with variable internal amortization, it makes the dynamic analysis. The fourth chapter briefly presents an original method for determining the dynamics of mechanisms with rotation cam and translated follower with roll. First, one presents the dynamics kinematics. Then one performs the dynamic analysis of a few models, for some movement laws, imposed on the follower, by the designed cam profile. The fifth chapter presents an original methods to determine the dynamic parameters at the classic distribution, and a new method is presented in the sixth chapter. The seventh chapter presents an original methods to determine the dynamic parameters at the camshaft with rotary cam and translated follower with roll.

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ISBN 10

3848241382

ISBN 13

9783848241385

Our Energy!

By: Florian Ion Petrescu

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Our Energy!

By: Florian Ion Petrescu

This book, try a vision about the tomorrow Earth's energies. Besides the traditional energies, are presented and possible new energies source. The author presents shortly, the annihilation process, which can donate energies obtained by the annihilation process between a particle and its antiparticle. Practically it proposes obtaining energy by the process of annihilation of matter with the antimatter. Another proposed method is the acquiring energy from the source and retransmitting it on the Earth in concentrated form. Energy development is the effort to provide sufficient primary energy sources and secondary energy forms for supply, cost, impact on air pollution and water pollution, mitigation of climate change with renewable energy. Technologically advanced societies have become increasingly dependent on external energy sources for transportation, the production of many manufactured goods, and the delivery of energy services. This energy allows people who can afford the cost to live under otherwise unfavorable climatic conditions through the use of heating, ventilation, and/or air conditioning. Level of use of external energy sources differs across societies, as do the climate, convenience, levels of traffic congestion, pollution and availability of domestic energy sources. All terrestrial energy sources except nuclear, geothermal and tidal are from current solar insolation or from fossil remains of plant and animal life that relied directly and indirectly upon sunlight, respectively. Ultimately, solar energy itself is the result of the Sun's nuclear fusion. Geothermal power from hot, hardened rock above the magma of the Earth's core is the result of the decay of radioactive materials present beneath the Earth's crust, and nuclear fission relies on man-made fission of heavy radioactive elements in the Earth's crust; in both cases these elements were produced in supernova explosions before the formation of the solar system. Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished).

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132

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Createspace Independent Pub

Published Date

ISBN 10

1467937533

ISBN 13

9781467937535

Some New Elements in Physics

By: Florian Ion Petrescu

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Some New Elements in Physics

By: Florian Ion Petrescu

The movement of an electron around the atomic nucleus has today a great importance in many engineering fields. Electronics, aeronautics, micro and nanotechnology, electrical engineering, optics, lasers, nuclear power, computing, equipment and automation, telecommunications, genetic engineering, bioengineering, special processing, modern welding, robotics, energy and electromagnetic wave field is today only a few of the many applications of electronic engineering. This first chapter presents shortly a new and original relation which calculates the radius with that the electron is running around the atomic nucleus. The second chapter presents, shortly, a new and original relation (20) which calculates the Doppler Effect exactly. This new relation (20) is the exact form and the classical expression (10) is an approximate relation. Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished). The share of renewables in electricity generation is around 18%, with 15% of global electricity coming from hydroelectricity and 3% from new renewables. The third chapter aims to disseminate new methods of obtaining energy. After 1950, began to appear nuclear fission plants. The fission energy was a necessary evil. In this mode it stretched the oil life, avoiding an energy crisis. Even so, the energy obtained from oil represents about 66% of all energy used. At this rate of use of oil, it will be consumed in about 40 years. Today, the production of energy obtained by nuclear fusion is not yet perfect prepared. But time passes quickly. We must rush to implement of the additional sources of energy already known, but and find new energy sources. In these circumstances this chapter comes to proposing possible new energy sources, like energies obtained by the annihilation of a particle with its antiparticle.

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ISBN 10

1467948802

ISBN 13

9781467948807

Camshaft Precision - Color

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Camshaft Precision - Color

By: Florian Ion Petrescu,Relly Victoria Petrescu

In the first chapter the authors present an original method to calculate the efficiency of the cams mechanisms. The second chapter presents an original method in determining a general, dynamic and differential equation for the motion of machines and mechanisms, particularized for the mechanisms with rotation cams and followers. The third chapter presents an original method to determine the general dynamics of mechanisms with rotation cams and followers, particularized to the plate translated follower. First, it presents the dynamics kinematics. Then it solves the Lagrange equation and using an original dynamic model with one degree of freedom, with variable internal amortization, it makes the dynamic analysis. The fourth chapter briefly presents an original method for determining the dynamics of mechanisms with rotation cam and translated follower with roll. First, one presents the dynamics kinematics. Then one performs the dynamic analysis of a few models, for some movement laws, imposed on the follower, by the designed cam profile. The fifth chapter presents an original methods to determine the dynamic parameters at the classic distribution, and a new method is presented in the sixth chapter. The seventh chapter presents an original methods to determine the dynamic parameters at the camshaft with rotary cam and translated follower with roll.

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ISBN 10

148029103X

ISBN 13

9781480291034

Cold Nuclear Fusion

By: Florian Ion Petrescu

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Cold Nuclear Fusion

By: Florian Ion Petrescu

Nuclear fusion is the process by which two or more atomic nuclei join together, or "fuse," to form a single heavier nucleus. During this process, matter is not conserved because some of the mass of the fusing nuclei is converted to energy which is released. The binding energy of the resulting nucleus is greater than the binding energy of each of the nuclei that fused to produce it. Fusion is the process that powers active stars. Creating the required conditions for fusion on Earth is very difficult, to the point that it has not been accomplished at any scale for protium, the common light isotope of hydrogen that undergoes natural fusion in stars. In nuclear weapons, some of the energy released by an atomic bomb (fission bomb) is used for compressing and heating a fusion fuel containing heavier isotopes of hydrogen, and also sometimes lithium, to the point of "ignition." At this point, the energy released in the fusion reactions is enough to briefly maintain the reaction. Fusion-based nuclear power experiments attempt to create similar conditions using far lesser means, although to date these experiments have failed to maintain conditions needed for ignition long enough for fusion to be a viable commercial power source. There are many experiments examining the possibility of fusion power for electrical generation. Nuclear fusion has great potential as a sustainable energy source. This is due to the abundance of hydrogen on the planet and the inert nature of helium (the nucleus which would result from the nuclear fusion of hydrogen atoms). Unfortunately, a controlled nuclear fusion reaction has not yet been achieved, due to the temperatures required to sustain one. In hot fusion it need a temperature of 4000 million degrees. Without a minimum of 3000 million degrees we can't make the hot fusion reaction, to obtain the nuclear power. Today we have just 150 million degrees made. To replace the lack of necessary temperature, it uses various tricks. Because obtaining the necessary huge temperature for hot fusion is still difficult, it is time to focus us on cold nuclear fusion. We need to bomb the fuel with accelerated deuterium nuclei. The fuel will be made from heavy water and lithium. The optimal proportion of lithium will be tested. It would be preferable to keep fuel in the plasma state. Research into developing controlled thermonuclear fusion for civil purposes also began in earnest in the 1950s, and it continues to this day. Two projects, the National Ignition Facility and ITER are in the process of reaching breakeven after 60 years of design improvements developed from previous experiments. The best results were obtained with the Tokamak-type installations

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ISBN 10

1478234261

ISBN 13

9781478234265

Lockheed Martin Color

Usa 2012

By: Relly Victoria Petrescu,Florian Ion Petrescu

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Lockheed Martin Color

Usa 2012

By: Relly Victoria Petrescu,Florian Ion Petrescu

Lockheed Martin (NYSE: LMT) is an American global aerospace, defense, security, and advanced technology company with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta in March 1995. It is headquartered in Bethesda, Maryland, in the Washington Metropolitan Area. Lockheed Martin employs 123,000 people worldwide. Robert J. Stevens is the current Chairman and Chief Executive Officer. Lockheed Martin is one of the world's largest defense contractors; In 2009, 74% of Lockheed Martin's revenues came from military sales. It received 7.1% of the funds paid out by the Pentagon. Lockheed Martin operates in four business segments. These comprise, with respective percentages of 2009 total net sales of $45.2 billion, Aeronautics (27%), Electronic Systems (27%), Information Systems & Global Solutions (27%), and Space Systems (19%). In 2009 US Government contracts accounted for $38.4 billion (85%), foreign government contracts $5.8 billion (13%), and commercial and other contracts for $900 million (2%). In both 2009 and 2008 the company topped the list of US Federal Contractors. The company has received the Collier Trophy six times. Most recently (in 2001) for being part of developing the X-35/F-35B LiftFan Propulsion System, and again in 2006 for leading the team that developed the F-22 Raptor fighter jet. Lockheed Martin is currently developing the F-35 Lightning II. Merger talks between Lockheed Corporation and Martin Marietta began in March 1994, with the companies announcing their $10 billion planned merger on August 30, 1994. The deal was finalized on March 15, 1995 when the two companies' shareholders approved the merger. The segments of the two companies not retained by the new company formed the basis for the present L-3 Communications, a mid-size defense contractor in its own right. Lockheed Martin later spun off the materials company Martin Marietta Materials. Both companies contributed important products to the new portfolio. Lockheed products included the Trident missile, P-3 Orion, F-16 Fighting Falcon, F-22 Raptor, C-130 Hercules, A-4AR Fightinghawk and the DSCS-3 satellite. Martin Marietta products included Titan rockets, Sandia National Laboratories (management contract acquired in 1993), Space Shuttle External Tank, Viking 1 and Viking 2 landers, the Transfer Orbit Stage (under subcontract to Orbital Sciences Corporation) and various satellite models. On April 22, 1996, Lockheed Martin completed the acquisition of Loral Corporation's defense electronics and system integration businesses for $9.1 billion, the deal having been announced in January. The remainder of Loral became Loral Space & Communications. Lockheed Martin abandoned plans for a $8.3 billion merger with Northrop Grumman on July 16, 1998, due to government concerns over the potential strength of the new group; Lockheed/Northrop would have had control of 25% of the Department of Defense's procurement budget. Lockheed Martin provided NASA with measurements in US Customary force units when metric was expected, resulting in the loss of the Mars Climate Orbiter at a cost of $125 million. The cost for spacecraft development was $193.1 million.

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112

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CreateSpace

Published Date

ISBN 10

1481827812

ISBN 13

9781481827812

Camshaft Precision

Usa 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

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Camshaft Precision

Usa 2012

By: Florian Ion Petrescu,Relly Victoria Petrescu

In the first chapter the authors present an original method to calculate the efficiency of the cams mechanisms. The second chapter presents an original method in determining a general, dynamic and differential equation for the motion of machines and mechanisms, particularized for the mechanisms with rotation cams and followers. The third chapter presents an original method to determine the general dynamics of mechanisms with rotation cams and followers, particularized to the plate translated follower. First, it presents the dynamics kinematics. Then it solves the Lagrange equation and using an original dynamic model with one degree of freedom, with variable internal amortization, it makes the dynamic analysis. The fourth chapter briefly presents an original method for determining the dynamics of mechanisms with rotation cam and translated follower with roll. First, one presents the dynamics kinematics. Then one performs the dynamic analysis of a few models, for some movement laws, imposed on the follower, by the designed cam profile. The fifth chapter presents an original methods to determine the dynamic parameters at the classic distribution, and a new method is presented in the sixth chapter. The seventh chapter presents an original methods to determine the dynamic parameters at the camshaft with rotary cam and translated follower with roll.

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1481083163

ISBN 13

9781481083164

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