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34:13

Download Electric Motors 'DC Motors and Generators' 1961 US Army Training Film TF9 3106 download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 07-10-15 Cited keywords education educational documentary history film Electric Motor Electric Motor Electric Generator DC Motor DC Generator DC Motors and Generators 1961 US Army Training Film US Army Training Film US Army Training Film shunt electricity instruction wiring series brushed brushless magnet magnetic rotating rotary permanent magnet commutation electromagnet electromagnetic actuator torque Uncommutated compound Direct Current Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

18:57

Download Fundamentals of Small Arms Weapons I Cycle of Operation (1945) US Army; How Guns & Rifles Function download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks "PROCESSES OF CHAMBERING, LOCKING, FIRING, AND COCKING EXPLAINED IN DETAIL - FUNCTIONAL MODEL BUILT UP TO ILLUSTRATE EACH STEP " US Army training film TF9-1448 s en wikipedia org wiki Semi-automatic_firearm A semi-automatic, or self-loading firearm is a weapon which performs all steps necessary to prepare the weapon to fire again after firing—assuming cartridges remain in the weapon s feed device or magazine Typically, this includes extracting and ejecting the spent cartridge case from the weapon s firing chamber, re-cocking the firing mechanism, and loading a new cartridge into the firing chamber Although automatic weapons and selective fire firearms do the same tasks, semi-automatic firearms do not automatically fire an additional round until the trigger is released and re-pressed by the person firing the weapon While all basic firearm actions require the action to be cycled manually before the first shot, semi-automatic as well as automatic and selective fire actions are differentiated from other forms such as single-action or double-action revolvers, pump-action, bolt-action, or lever-action firearms by eliminating the need to manually cycle the weapon after each shot For example, to fire ten rounds from a semi-automatic firearm or a selective fire weapon set to fire semi-automatically, the action would initially be cycled to load the first round and the trigger would need to be pulled ten times (once for each round fired) Early history (1885--1945) The first successful design for a semi-automatic rifle is attributed to German-born gunsmith Ferdinand Ritter von Mannlicher, who unveiled the design in 1885 [1] The Model 85 was followed by the equally innovative Mannlicher Models 91, 93 and 95 semi-automatic rifles Although Mannlicher earned his reputation with his bolt action rifle designs, he also produced a few semi-automatic pistols, including the Steyr Mannlicher M1894, which employed an unusual blow-forward action and held five rounds of 6 5 mm ammunition that were fed into the M1894 by a stripper clip Semi-automatic shotgun A few years later, American gunsmith John Moses Browning developed the first successful semi-automatic shotgun, the Browning Auto-5, which was first manufactured in 1902 by Fabrique Nationale de Herstal and sold in America under the Browning name The Auto-5 relied on long recoil operation; this design remained the dominant form in semi-automatic shotguns for approximately 50 years Production of the Auto-5 was finally ended in 1999 Blowback semi-automatic In 1903 and 1905, the Winchester Repeating Arms Company introduced the first semi-automatic rimfire and centerfire rifles designed especially for the civilian market The Winchester Model 1903 and Winchester Model 1905 operated on the principle of blowback in order to function semi-automatically Designed entirely by T C Johnson, the Model 1903 achieved commercial success and continued to be manufactured until 1932 when the Winchester Model 63 replaced it By the early 20th century, several manufacturers had introduced semi-automatic 22 sporting rifles, including Winchester, Remington, Fabrique Nationale and Savage Arms, all using the direct blow-back system of operation Winchester introduced a medium caliber semi-automatic sporting rifle, the Model 1907 as an upgrade to the Model 1905, utilizing a blowback system of operation, in calibers such as 351 Winchester Both the Models of 1905 and 1907 saw limited military and police use In 1937, the American M1 Garand was the first semi-automatic rifle to replace its nation s bolt action rifle as the standard-issue infantry weapon The gas-operated M1 Garand was developed by Canadian-born John Garand for the US government at the Springfield Armory in Springfield, Massachusetts After years of research and testing, the first production model of the M1 Garand was unveiled in 19

16:27

Download Electricity Parallel Resistive Circuits Analysis US Air Force Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks "TRAINING FILM ON ELECTRICITY IN THIS EPISODE PARALLEL RESISTIVE CIRCUITS - ANALYSIS TVK 30-101P" US Air Force Training Film TVK30-101P s en wikipedia org wiki Electrical_network An electrical network is an interconnection of electrical elements such as resistors, inductors, capacitors, transmission lines, voltage sources, current sources and switches An electrical circuit is a special type of network, one that has a closed loop giving a return path for the current Electrical networks that consist only of sources (voltage or current), linear lumped elements (resistors, capacitors, inductors), and linear distributed elements (transmission lines) can be analyzed by algebraic and transform methods to determine DC response, AC response, and transient response A resistive circuit is a circuit containing only resistors and ideal current and voltage sources Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors If the sources are constant (DC) sources, the result is a DC circuit A network that contains active electronic components is known as an electronic circuit Such networks are generally nonlinear and require more complex design and analysis tools s en wikipedia org wiki Network_analysis_(electrical_circuits) A network, in the context of electronics, is a collection of interconnected components Network analysis is the process of finding the voltages across, and the currents through, every component in the network There are a number of different techniques for achieving this However, for the most part, they assume that the components of the network are all linear A useful procedure in network analysis is to simplify the network by reducing the number of components This can be done by replacing the actual components with other notional components that have the same effect A particular technique might directly reduce the number of components, for instance by combining impedances in series On the other hand it might merely change the form in to one in which the components can be reduced in a later operation For instance, one might transform a voltage generator into a current generator using Norton s theorem in order to be able to later combine the internal resistance of the generator with a parallel impedance load A resistive circuit is a circuit containing only resistors, ideal current sources, and ideal voltage sources If the sources are constant (DC) sources, the result is a DC circuit The analysis of a circuit refers to the process of solving for the voltages and currents present in the circuit The solution principles outlined here also apply to phasor analysis of AC circuits Two circuits are said to be equivalent with respect to a pair of terminals if the voltage across the terminals and current through the terminals for one network have the same relationship as the voltage and current at the terminals of the other netwo

24:33

Download Air Brakes Principles of Operation (1967) US Army Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks "Explains the design and functions of the components in the air brakes system used in large military vehicles Shows what happens when the brake pedal is depressed and released " US Army training film TF9-3845 s en wikipedia org wiki Air_brake_(road_vehicle) Air brakes are used in trucks, buses, trailers, and semi-trailers George Westinghouse first developed air brakes for use in railway service He patented a safer air brake on March 5, 1872 Compressed air brake system Compressed air brake systems are typically used on heavy trucks and buses The system consists of service brakes, parking brakes, a control pedal, an engine-driven air compressor and a compressed air storage tank For the parking brake, there is a disc or drum brake arrangement which is designed to be held in the applied position by spring pressure Air pressure must be produced to release these "spring brake" parking brakes For the service brakes (the ones used while driving for slowing or stopping) to be applied, the brake pedal is pushed, routing the air under pressure (approx 100-125psi) to the brake chamber, causing the brake to reduce wheel rotation speed Most types of truck air brakes are drum units, though there is an increasing trend towards the use of disc brakes in this application The air compressor draws filtered air from the atmosphere and forces it into high-pressure reservoirs at around 120 PSI Most heavy vehicles have a gauge within the driver s view, indicating the availability of air pressure for safe vehicle operation, often including warning tones or lights Setting of the parking emergency brake releases the pressurized air pressure in the lines between the compressed air storage tank and the brakes, thus actuating the (spring brake) parking braking hardware An air pressure failure at any point would apply full spring brake pressure immediately Design and function A compressed air brake system is divided into a supply system and a control system The supply system compresses, stores and supplies high-pressure air to the control system as well as to additional air operated auxiliary truck systems (gearbox shift control, clutch pedal air assistance servo, etc ) The air compressor is driven off of the engine either by crankshaft pulley via a belt or directly off of the engine timing gears It is lubricated and cooled by the engine lubrication and cooling systems Compressed air is first routed through a cooling coil and into an air dryer which removes moisture and oil impurities and also may include a pressure regulator, safety valve and a smaller purge reservoir As an alternative to the air dryer, the supply system can be equipped with an anti freeze device and oil separator The compressed air is then stored in a reservoir (also called a wet tank) from which it is then distributed via a four way protection valve into the front and rear brake circuit air reservoir, a parking brake reservoir and an auxiliary air supply distribution point The system also includes various check, pressure limiting, drain and safety valves Control system The control system is further divided into two service brake circuits the parking brake circuit and the trailer brake circuit This dual brake circuit is further split into front and rear wheel circuits which receive compressed air from their individual reservoirs for added safety in case of an air leak The service brakes are applied by means of a brake pedal air valve which regulates both circuits The parking brake is the air operated spring brake type where its applied by spring force in the spring brake cylinder and released by compressed air via hand control valve The trailer brake consists of a direct two line system the supply line (marked red) and the separate control or service line (marked blue) The supply line receives air from the prime mover park brake air tank via a park brake relay valve and the control line is regulated via the trailer brake relay valve The operating signals for the relay are provided by the prime mover brake pedal air valve, trailer service brake hand control (subject to a country s relevant heavy vehicle legislation) and the prime mover park brake hand contr

9:2

Download Electric Motors "AC Motors and Generators" (1961) pt2 2 US Army download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks US Army Training Film TF9-3107 s en wikipedia org wiki Electric_generator U S NRC image of a modern steam turbine generator (STG) In electricity generation, a generator[1] is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines and even hand cranks The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday Generators provide nearly all of the power for electric power grids The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities Many motors can be mechanically driven to generate electricity and frequently make acceptable manual generators Induction generator Main article induction generator Induction AC motors may be used as generators, turning mechanical energy into electric current Induction generators operate by mechanically turning their rotor faster than the synchronous speed, giving negative slip A regular AC asynchronous motor usually can be used as a generator, without any internal modifications Induction generators are useful in applications such as minihydro power plants, wind turbines, or in reducing high-pressure gas streams to lower pressure, because they can recover energy with relatively simple controls They do not require an exciter circuit because the rotating magnetic field is provided by induction from the stator circuit They also do not require speed governor equipment as they inherently operate at the connected grid frequency To operate, an induction generator must be excited with a leading voltage; this is usually done by connection to an electrical grid, or sometimes they are self-excited by using phase correcting capaci

34:12

Download Electric Motors DC Motors and Generators (1961) US Army Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks "DC MOTORS AND GENERATORS DESIGN, APPLICATION, AND OPERATION OF BASIC, SERIES, SHUNT, AND COMPOUND WOUND TYPE DC GENERATORS AND MOTORS " US Army training film TF9-3106 en wikipedia org wiki DC_motor A DC motor is an electric motor that runs on direct current (DC) electricity Two important performance parameters of DC motors are the Motor constants, Kv and Km Brush The brushed DC electric motor generates torque directly from DC power supplied to the motor by using internal commutation, stationary magnets (permanent or electromagnets), and rotating electrical magnets Like all electric motors or generators, torque is produced by the principle of Lorentz force, which states that any current-carrying conductor placed within an external magnetic field experiences a torque or force known as Lorentz force Advantages of a brushed DC motor include low initial cost, high reliability, and simple control of motor speed Disadvantages are high maintenance and low life-span for high intensity uses Brushless Brushless DC motors use a rotating permanent magnet or soft magnetic core in the rotor, and stationary electrical magnets on the motor housing A motor controller converts DC to AC This design is simpler than that of brushed motors because it eliminates the complication of transferring power from outside the motor to the spinning rotor Uncommutated Other types of DC motors require no commutation Homopolar motor -- A homopolar motor has a magnetic field along the axis of rotation and an electric current that at some point is not parallel to the magnetic field The name homopolar refers to the absence of polarity change Homopolar motors necessarily have a single-turn coil, which limits them to very low voltages This has restricted the practical application of this type of motor Ball bearing motor -- A ball bearing motor is an unusual electric motor that consists of two ball bearing-type bearings, with the inner races mounted on a common conductive shaft, and the outer races connected to a high current, low voltage power supply An alternative construction fits the outer races inside a l tube, while the inner races are mounted on a shaft with a non-conductive section (e g two sleeves on an insulating rod) This method has the advantage that the tube will act as a flywheel The direction of rotation is determined by the initial spin which is usually required to get it going Connection types There are three types of connections used for DC electric motors series, shunt and compound These types of connections configure how the motor s field and armature windings are connected together The type of connection is significant because it determines the characteristics of the motor and is selected for speed torque requirements of the load Series connection A series DC motor connects the armature and field windings in series with a common D C power source This motor has poor speed regulation since its speed varies approximately inversely to load However, a series DC motor has very high starting torque and is commonly used for starting high inertia loads, such as trains, elevators or hoists Series motors called "universal motors" can be used on alternating current Shunt connection A shunt DC motor connects the armature and field windings in parallel or shunt with a common D C power source This type of motor has good speed regulation even as the load varies, but does not have as high of starting torque as a series DC motor It is typically used for industrial, adjustable speed applications, such as machine tools, winding unwinding machines and tensioners Compound connection A compound DC motor connects the armature and fields windings in a shunt and a series combination to give it characteristics of both a shunt and a series DC mot

25:28

Download Lead Acid Storage Battery Theory 1959 US Navy Training Film; Chemistry of Electric Batteries download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 17-06-17 Cited keywords education educational documentary history film navy US Navy USN training instruction safety problems classic retro vintage footage oldie archive unsafe load equipment battery cell lead sulphuric acid acid power electricity volts amps current charge discharge ionization ions positive negative 1950s 50s hydrogen sulphur sulfate chemistry plate lead dioxide lead peroxide sponge lead terminal electrolyte water gas chemical compound reaction heat Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

44:2

Download Radar Technical Principles Indicators 1946 US Army Training Film TF11 1387 download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 14-08-15 Cited keywords education educational documentary history film Radar Technology Electronics Technical Principles Mechanics radio radio waves 1946 US Army training US Army training film army training film army training army radar repair 1940s 40s basic introduction signal bounce reflect reflection echo pip detection ranging primer tutorial lesson instructional early radar pulse indicator timer receiver transmitter TF11-1387 Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

22:39

Download Telephone Electronics 'Basic Telephony' 1961 US Army Training Film TF11 3116 download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 01-10-15 Cited keywords Telephony Basic Telephony 1961 US Army Training Film US Training Film US Army Training Film Army Military Short Short Film Short Film (Film Genre) education educational documentary instruction instructional electronics communications telephone telephonic twisted pair twisted pair wire wiring ring ringer voice transmission speaker transmitter receiver microphone audio sound speech dial network communicate phone Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

27:26

Download M14 Rifle U S Rifle 7 62mm M14 Operation and Cycle of Function (1960) download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks 1960 U S Army Training Film U S Rifle, Cal 7 62MM M-14 Operation And Cycle Of Functioning "DESIGN AND CAPABILITIES - FIELD STRIPPING PROVISIONS - CYCLE OF FUNCTIONING - FEEDING, CAMBERING, LOCKING, FIRING, ETC - SEMIAUTOMATIC AND AUTOMATIC OPERATION " US Army training film TF9-2970 The M14 rifle, formally the United States Rifle, 7 62 mm, M14, is an American selective fire automatic rifle firing 7 62x51mm NATO ( 308 Winchester) ammunition It was the standard issue U S rifle from 1959 to 1970 The M14 was used for U S Army and Marine Corps basic and advanced individual training, and was the standard issue infantry rifle in CONUS, Europe, and South Korea, until replaced by the M16 rifle in 1970 The M14 remains in limited front line service with the United States Army, Marine Corps, Navy, Air Force, and Coast Guard, and is also used as a ceremonial weapon It was the last American "battle rifle" (a term applied to weapons firing full-power rifle ammunition) issued in quantity to U S troops The M14 also provides the basis for the M21 and M25 sniper rifles The M14 was developed from a long line of experimental weapons based upon the M1 rifle Although the M1 was among the most advanced infantry rifles of the 1940s, it was not a perfect weapon Modifications were beginning to be made to the basic M1 rifle s design since the twilight of World War II Changes included adding fully automatic firing capability and replacing the 8-round en bloc clips with a detachable box magazine holding 20 rounds Winchester, Remington, and Springfield Armory s own John Garand offered different conversions Garand s design, the T20, was the most popular, and T20 prototypes served as the basis for a number of Springfield test rifles from 1945 through the early 1950s Earle Harvey of Springfield Armory designed a completely different rifle, the T25, for the new 30 Light Rifle cartridge The latter was based upon 30-06 cartridge case cut down to the length of the 300 Savage case The 30 Light Rifle eventually evolved into the 7 62x51mm NATO and the commercial 308 Winchester round Although shorter than the 30-06, the 7 62x51mm NATO round retained the same power due to the use of modern propellants [8] In the background, Lloyd Corbett was tasked with developing 30 Light Rifle conversions for the M1 rifle and later the T20 prototypes After a series of prototype designs, the T44 surfaced The earliest T44 prototypes used the T20 receivers re-barreled for 7 62mm NATO, and replaced the long operating rod piston of the M1 with the T25 s shorter "gas expansion and cut-off" system Later T44 prototypes used newly fabricated receivers shorter than either the M1 or T20; the new action s length was matched to the shorter 7 62mm NATO round instead of the longer 30-06 The T44 competed successfully against the T47 (a modified T25) and the FN FAL (T48) This led to the T44 s adoption by the U S military as the M14 in 1957 Springfield Armory began tooling a new production line in 1958 and delivered the first service rifles to the U S Army in July 1959 The M14 remained the primary infantry weapon in Vietnam until it was replaced by the M16 in 1966--

28:31

Download Explorer 1 First US Satellite and Launch Team in blockhouse, January 31,1958 HD download mp4 3gp mp3

FROM Jeff Quitney YouTube website s www youtube com channel UCM-kjdrQge9AACfB3MSRyrgThe First complete documentary on Explorers I and III produced for "THE BIG PICTURE" -- "Army Satellites" reveals the dramatic, suspenseful story of how the Army--when the prestige of the United States throughout the world had been shaken by events beyond its control--stirred the hearts and emotions of the American people with an epic display of scientific and technical teamwork The story depicts the drama of the crucial 84 days before launching Explorer I The story begins on the morning of November 8, 1957, at Huntsville, Alabama THE BIG PICTURE cameras cover a sudden meeting called by Major General John B Medaris with his staff which included Dr Wernher von Braun From this point, the film develops with dramatic sequences leading into the final "countdown" in the blockhouse at Cape Canaveral, Florida "Army Satellites" is an actual step-by-step documentary filmed over a five month period by Army Signal Corps cameramen and is narrated by Alexander Scourby With this issue of THE BIG PICTURE, the series has reached a total of 229 individual episodes since it started in 1951 as a public service feature for television stations totaling 328 in the United States "The Big Picture" episode TV-397 see also "United States Space Explorations" 1958 NASA 1st 5 US satellites www youtube com watch?v vyUQ9J Reupload of a previously uploaded film, in one piece instead of multiple parts, and with improved video & sound Public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and or equalization (the resulting sound, though not perfect, is far less noisy than the original) nssdc gsfc nasa gov nmc master Explorer 1 was the first successfully launched U S spacecraft Launched late on 31 January 1958 (10 48 p m EST, or 03 48 UTC on 01 February) on an adapted Jupiter-C rocket, Explorer 1 carried instrumentation for the study of cosmic rays, micrometeorites, and for monitoring of the satellite s temperature The Jupiter-C launch vehicle consisted of four propulsive stages The first stage was an upgraded Redstone liquid-fueled rocket The second, third, and fourth stage rockets consisted of eleven, three, and one (respectively) Sergeant motors The satellite itself was the fourth stage of the Jupiter-C rocket It was cylindrical, 2 03 m long and 0 152 m in diameter Four whip antennas were mounted symmetrically about the mid-section of the rocket The spacecraft was spin stabilized The 4 82 kg instrumentation package was mounted inside of the forward section of the rocket body A single Geiger-Mueller detector was used for the detection of cosmic rays Micrometeorite detection was accomplished using both a wire grid (arrayed around the aft section of the rocket body) and an acoustic detector (placed in contact with the midsection) Data from the instruments were transmitted continuously, but acquisition was limited to those times when the spacecraft passed over appropriately equipped ground receiving stations Assembly of data proceeded slowly also due to the fact that the satellite s spin-stabilized attitude transitioned into a minimum kinetic energy state, that of a flat spin about its transverse axis This was deduced from the modulation of the received signal, which produced periodic fade-outs of the signal Explorer 1 was the first spacecraft to successfully detect the durably trapped radiation in the Earth s magnetosphere, dubbed the Van Allen Radiation Belt (after the principal investigator of the cosmic ray experiment on Explorer 1, James A Van Allen) Later missions (in both the Explorer and Pioneer series) were to expand on the knowledge and extent of these zones of radiation and were the foundation of modern magnetospheric studies Catégorie Science et technologie Licence Licence YouTube sta

16:55

Download Airplane Propellers Principles and Types 1941 US Army Air Corps Pilot Training Film download mp4 3gp mp3

Curated from the National Archive ( s archive org) Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 03-11-17 Cited keywords Flying US Army Air Forces Training Film World War II WWII WW2 bomber pilot training pilot instruction flight training taxi engine RPM pressure startup start speed USAAC United States USAF USAAF education educational documentary history film war aviation history aircraft plane airplane aviation Military classic retro vintage footage oldie archive 1940s 40s prop airscrew propeller airlane blade angle motor flight pitch variable Hamilton-Standard Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

18:6

Download Ballistics Fundamentals of Ballistics (1948) US Army Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks "PRINCIPLES OF PHYSICS INVOLVED IN DESIGN AND FUNCTIONING OF WEAPONS AND AMMUNITION, WITH PARTICULAR REFERENCE TO THEIR ARTILLERY APPLICATION " US Army training film TF9-1512 en wikipedia org wiki Ballistics Ballistics (gr βάλλειν ( ba llein ), "throw") is the science of mechanics that deals with the flight, behavior, and effects of projectiles, especially bullets, gravity bombs, rockets, or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance A ballistic body is a body which is free to move, behave, and be modified in appearance, contour, or texture by ambient conditions, substances, or forces, as by the pressure of gases in a gun or propulsive nozzle, by rifling in a barrel, by gravity, by temperature, or by air particles A ballistic missile is a missile only guided during the relatively brief initial powered phase of flight, whose course is subsequently governed by the laws of classical mechanics Modern inter-continental ballistic missiles (ICBMs), contain a maneuverable orbiting bus that positions and releases ballistic warheads in space using celestial navigation Gun ballistics Gun ballistics is the work of projectiles from the time of shooting to the time of impact with the target Gun ballistics is often broken down into the following four categories, which contain detailed information on each category Internal ballistics (sometimes called interior ballistics) the study of the processes originally accelerating the projectile, for example the passage of a bullet through the barrel of a rifle Transition ballistics (sometimes called intermediate ballistics) the study of the projectile s behavior when it leaves the barrel and the pressure behind the projectile is equalized External ballistics (sometimes called exterior ballistics) the study of the passage of the projectile through a medium, most commonly earth s atmosphere Terminal ballistics the study of the interaction of a projectile with its target, whether that be flesh (for a hunting bullet), steel (for an anti-tank round), or even furnace slag (for an industrial slag disruptor) en wikipedia org wiki Internal Internal ballistics, a subfield of ballistics, is the study of a projectile s motion from the time its propellant s igniter is initiated until it exits the gun barrel The study of internal ballistics is important to designers and users of firearms of all types, from small-bore Olympic rifles and pistols, to high-tech artillery Hatcher breaks the duration of interior ballistics into 3 parts - Lock time, the time from sear release until the primer is struck - Ignition time, the time from when the primer is struck until the projectile starts to move - Barrel time, the time from when the projectile starts to move until exits the barrel These times have significance for accuracy If the weapon is moving, then a shorter lock time minimizes the effect of that motion The consistency of the ignition and barrel times affect and relate to the muzzle velocity There are many processes that are significant The source of energy is the burning propellant It generates hot gases that raise the chamber pressure That pressure pushes on the base of the projectile, and causes the projectile to accelerate The chamber pressure depends on many factors The amount of propellant that has burned, the temperature of the gases, and the volume of the chamber The burn rate of the propellant depends not only chemical makeup, but also the shape of the propellant grains The temperature depends not only on the energy released, but also the heat lost to the sides of the barrel and chamber The volume of the chamber is continuously changing as the propellant burns, there is more volume for the gas to occupy As the projectile travels down the barrel, the volume behind the projectile also increas

10:35

Download Radio Electronics Frequency Modulation Basic Principles pt2 2 (1964) US Army Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks Radio Electronics Frequency Modulation Basic Principles s en wikipedia org wiki Frequency_modulation Passband modulation Analog modulation AM FM PM QAM SM SSB Digital modulation ASK APSK CPM FSK MFSK MSK OOK PPM PSK QAM SC-FDE TCM WDM Hierarchical modulation QAM WDM Spread spectrum CSS DSSS FHSS THSS See also Capacity-approaching codes Demodulation Line coding Modem AnM PoM PAM PCM PWM ΔΣM OFDM FDM Multiplexing vte Animation of audio, AM and FM signals A signal may be carried by an AM or FM radio wave FM has better noise (RFI) rejection than AM, as shown in this dramatic New York publicity demonstration by General Electric in 1940 The radio has both AM and FM receivers With a million-volt arc as a source of interference behind it, the AM receiver produced only a roar of static, while the FM receiver clearly reproduced a music program from Armstrong s experimental FM transmitter W2XMN in New Jersey In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave In analog frequency modulation, such as FM radio broadcasting of an audio signal representing voice or music, the instantaneous frequency deviation, the difference between the frequency of the carrier and its center frequency, is proportional to the modulating signal Digital data can be encoded and transmitted via FM by shifting the carrier s frequency among a predefined set of frequencies representing digits – for example one frequency can represent a binary 1 and a second can represent binary 0 This modulation technique is known as frequency-shift keying (FSK) FSK is widely used in modems and fax modems, and can also be used to send Morse code [1] Radioteletype also uses FSK [2] Frequency modulation is widely used for FM radio broadcasting It is also used in telemetry, radar, seismic prospecting, and monitoring newborns for seizures via EEG,[3] two-way radio systems, music synthesis, magnetic tape-recording systems and some video-transmission systems In radio transmission, an advantage of frequency modulation is that it has a larger signal-to-noise ratio and therefore rejects radio frequency interference better than an equal power amplitude modulation (AM) signal For this reason, most music is broadcast over FM radio Frequency modulation and phase modulation are the two complementary principal methods of angle modulation; phase modulation is often used as an intermediate step to achieve frequency modulation These methods contrast with amplitude modulation, in which the amplitude of the carrier wave varies, while the frequency and phase remain cons

32:5

Download Electronic Filters A (Part 1) circa 1970 US Air Force Training Film; How Capacitors Work as Filters download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 03-10-15 Cited keywords education educational documentary history film electronics electricity filter capacitor high-pass low-pass band-pass frequency Electronic Filter circuit circuits USAF Air Force US Air Force training ATC Air Training Command tech technology physics 1970 1970s 70s instruction instructional learn teach teaching lesson school class lessons primer introduction basic short short film short subject Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

29:27

Download Principles of Electromagnetism 1927 DeVry School Films Inc , Carpenter Goldman Laboratories download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 15-02-17 Cited keywords education educational documentary history film magnetism electricity Faraday electromagnetic generator electrical dynamo alternator Electromagnetism training film basic primer introduction class school lesson tutorial training electron charge classic retro vintage footage oldie animation archive animated electric pole silent silent film cartoon 1920s 20s field thumb rule Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

14:6

Download Electronics 'Parallel Resistive Circuits Bridges' US Air Force Training Film TVK30 101R download mp4 3gp mp3

Curated from the National Archive ( s archive org) *NOT_ORIGINAL* Please subscribe and like our videos to make them more visible to a wider audience We hope to make this unique and educational content more accessible to the public Originally uploaded by Jeff Quitney on 19-04-17 Cited keywords Electricity Parallel Resistive Circuits Bridges US Air Force Training Film Electronics Parallel Resistive Circuits Bridge circuit US Air Force Training Film US Air Force Training Film USAF electronics training how to instruction instructional education educational documentary current voltage resistance electric circuit electric electric current history Keesler AFB Air Training Command Disclaimer This material is re-uploaded in order to disseminate its content to a wider audience All material is originally created by various public entities and should therefore be free of copyright restrictions Nonetheless, if the material (in its entirety or in part) violates your copyright, please let us know what steps you want us to take Video may display ads monetized by audiovisual copyright holders in some cases or in order to help facilitate the logistics and costs associated with identifying, preparing, and distributing this content We hope you enjoy these works of knowledge Please subscribe and like our videos to make them more visible to a wider audi

10:44

Download Electronics Tutorial "Parallel RL Circuits" (1972) US Air Force Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks This video is a tutorial on Parallel RL Circuits really interesting watch s en wikipedia org wiki RL_circuit A resistor–inductor circuit (RL circuit), or RL filter or RL network, is an electric circuit composed of resistors and inductors driven by a voltage or current source A first-order RL circuit is composed of one resistor and one inductor and is the simplest type of RL circuit A first order RL circuit is one of the simplest analogue infinite impulse response electronic filters It consists of a resistor and an inductor, either in series driven by a voltage source or in parallel driven by a current source The fundamental passive linear circuit elements are the resistor (R), capacitor (C) and inductor (L) These circuit elements can be combined to form an electrical circuit in four distinct ways the RC circuit, the RL circuit, the LC circuit and the RLC circuit with the abbreviations indicating which components are used These circuits exhibit important types of behaviour that are fundamental to analogue electronics In particular, they are able to act as passive filters This article considers the RL circuit in both series and parallel as shown in the diagrams In practice, however, capacitors (and RC circuits) are usually preferred to inductors since they can be more easily manufactured and are generally physically smaller, particularly for higher values of components Both RC and RL circuits form a single-pole filter Depending on whether the reactive element (C or L) is in series with the load, or parallel with the load will dictate whether the filter is low-pass or high-pass Frequently RL circuits are used for DC power supplies to RF amplifiers, where the inductor is used to pass DC bias current and block the RF getting back into the power supply This article relies on knowledge of the complex impedance representation of inductors and on knowledge of the frequency domain representation of sig

23:53

Download Electric Motors "AC Motors and Generators" (1961) US Army Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks "DESIGN, OPERATION, AND USE OF SINGLE AND MULTIPHASE AC GENERATORS AND MOTORS - OPERATION OF GENERATOR WITH STATIONARY ARMATURE - 0PERATION OF SYNCHRONOUS MOTOR " US Army Training Film TF9-3107 s en wikipedia org wiki Electric_generator In electricity generation, a generator[1] is a device that converts motive power into electrical power for use in an external circuit Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines and even hand cranks The first electromagnetic generator, the Faraday disk, was built in 1831 by British scientist Michael Faraday Generators provide nearly all of the power for electric power grids The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities Many motors can be mechanically driven to generate electricity and frequently make acceptable manual generators History[edit] Before the connection between magnetism and electricity was discovered, electrostatic generators were invented They operated on electrostatic principles, by using moving electrically charged belts, plates, and disks that carried charge to a high potential electrode The charge was generated using either of two mechanisms electrostatic induction or the triboelectric effect Such generators generated very high voltage and low current Because of their inefficiency and the difficulty of insulating machines that produced very high voltages, electrostatic generators had low power ratings, and were never used for generation of commercially significant quantities of electric power Their only practical applications were to power early X-ray tubes, and later in some atomic particle accelera

6:16

Download Electricity Parallel Resistive Circuits Analysis pt2 2 US Air Force Training Film download mp4 3gp mp3

Please considering supporting the channel through my patreon link to help continue the consistent uploads s www patreon com oldmoviesreborn Thanks A look at Electrical Resistive Circuits s en wikipedia org wiki Electrical_network An electrical network is an interconnection of electrical components (e g batteries, resistors, inductors, capacitors, switches) or a model of such an interconnection, consisting of electrical elements (e g voltage sources, current sources, resistances, inductances, capacitances) An electrical circuit is a network consisting of a closed loop, giving a return path for the current Linear electrical networks, a special type consisting only of sources (voltage or current), linear lumped elements (resistors, capacitors, inductors), and linear distributed elements (transmission lines), have the property that signals are linearly superimposable They are thus more easily analyzed, using powerful frequency domain methods such as Laplace transforms, to determine DC response, AC response, and transient response A resistive circuit is a circuit containing only resistors and ideal current and voltage sources Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors If the sources are constant (DC) sources, the result is a DC circuit For a random resistor network, the effective resistance and current distribution properties of the network can also be modeled in terms of graph measures and geometrical properties of network [1] A network that contains active electronic components is known as an electronic circuit Such networks are generally nonlinear and require more complex design and analysis tools An active network is a network that contains an active source – either a voltage source or current source A passive network is a network that does not contain an active source An active network contains one or more sources of electromotive force It consists of active elements like a battery or a transistor Active elements can inject power to the circuit, provide power gain, and control the current flow within the circuit Passive networks do not contain any sources of emf They consist of passive elements like resistors and capacitors These elements are not capable of the same functions as active elements By linearity A network is linear if its signals obey the principle of superposition; otherwise it is non-linear By lumpiness Discrete passive components (resistors, capacitors and inductors) are called lumped elements because all of their, respectively, resistance, capacitance and inductance is assummed to be located ("lumped") at one place This design philosophy is called the lumped element model and networks so designed are called lumped element circuits This is the conventional approach to circuit design At high enough frequencies the lumped assumption no longer holds because their is a significant fraction of a wavelength across the component dimensions A new design model is needed for such cases called the distributed element model Networks designed to this model are called distributed element circ

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