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NS Class Airship
The British NS (North Sea) class non-rigid airships were the largest and last in a succession of "blimps" that served with the Royal Naval Air Service during World War I; developed from experiences gained with earlier classes to operate off the east coast of Britain on long-range patrols.North Sea Three - Turpin, Brian J. Retrieved on 30 March 2009. Despite early problems, examples of the class went on to break all flying records for non-rigid airships,Whale (2008), p.69. and the type became regarded as the most efficient of its kind. The Airship Heritage Trust. Retrieved on 30 March 2009. Design The NS class airship was developed in response to the increasing requi ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is an affinity group for contributors with shared goals within the Wikimedia movement. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within Wikimedia project, sibling projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by ''Smithsonian Magazine, Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outsi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rudder
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane, the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane. A rudder operates by redirecting the fluid past the hull or fuselage, thus imparting a turning or yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or afterend. Often rudders are shaped to minimize hydrodynamic or aerodynamic drag. On simple watercraft, a tiller—essentially, a stick or pole acting as a lever arm—may be attached to the top of the rudder to allow it to be turned by a helmsman. In larger vessels, cables, pushrods, or hydraulics may link rudders to steering wheels. In typical aircraft, the rudder is operated by pedals via mechanical linkages or hydraulics. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farnborough, Hampshire
Farnborough is a town located in the Rushmoor district of Hampshire, England. It has a population of around 57,486 as of the 2011 census and is an important centre of aviation, engineering and technology. The town is probably best known for its association with aviation, including Samuel Cody, Farnborough Airport, the Farnborough International Airshow, Royal Aircraft Establishment and the Air Accidents Investigation Branch. History Pre-history and early settlements The earliest evidence of human settlement around Farnborough dates back thousands of years. Archaeologists have uncovered flint tools and other artefacts from the Mesolithic period, indicating the presence of hunter-gatherer communities in the area over 8,000 years ago. During the Neolithic period, the region saw increasing agricultural activity and the development of more permanent settlements. Excavations have revealed the remains of several prehistoric enclosures and barrows within the boundaries of modern-day Far ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maidenhead
Maidenhead is a market town in the Royal Borough of Windsor and Maidenhead in the county of Berkshire, England. It lies on the southwestern bank of the River Thames, which at this point forms the border with Buckinghamshire. In the 2021 Census, the Maidenhead built-up area had a population of 67,375. The town is west of Charing Cross, London and east-northeast of Reading, Berkshire, Reading. History The antiquary John Leland (antiquary), John Leland claimed that the area around Maidenhead's present town centre was a small Roman settlement called Alaunodunum. He stated that it had all but disappeared by the end of the Roman occupation. Although his source is unknown, there is documented and physical evidence of Roman settlement in the town. There are two well known villa sites in the town, one being in the suburb of Cox Green, Berkshire, Cox Green, and the other just west of the town centre on Castle Hill. This villa sat on the route of the Camlet Way which was a Roman road ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coxswain
The coxswain ( or ) is the person in charge of a boat, particularly its navigation and steering. The etymology of the word gives a literal meaning of "boat servant" since it comes from ''cock'', referring to the wiktionary:cockboat, cockboat, a type of ship's boat, and ''swain'', an Old English term derived from the Old Norse ''sveinn'' meaning boy or servant. In 1724, a "cockswain" was defined as "An officer of a ship who takes care of the cockboat, barge or shallop, with all its furniture, and is in readiness with his crew to man the boat on all occasions." When the term "cockboat" became obsolete, the title of coxswain as the person in charge of a ship's boat remained. Rowing In rowing, the coxswain sits in either the bow or the stern of the boat (depending on the type of boat) while verbally and physically controlling the boat's steering, speed, timing and fluidity. The primary duty of a coxswain is to ensure the safety of those in the boat. In a race setting, the coxswai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolls-Royce Eagle
The Rolls-Royce Eagle was the first aircraft engine to be developed by Rolls-Royce Limited. Introduced in 1915 to meet British military requirements during World War I, it was used to power the Handley Page Type O bombers and a number of other military aircraft. The Eagle was the first engine to make a non-stop Transatlantic flight, trans-Atlantic crossing by aeroplane when two Eagles powered the converted Vickers Vimy bomber on the transatlantic flight of Alcock and Brown in June 1919. Background At the outbreak of World War I in August 1914, the Royal Aircraft Establishment, Royal Aircraft Factory asked Rolls-Royce to develop a new air-cooled engine. Despite initial reluctance, they agreed, on condition that it be cooled by water rather than by air, which was the company's area of expertise. Design and development Development of the new 20 litre engine was led by Henry Royce from his home in Kent. Based initially on the 7.4 litre 40/50 Rolls-Royce Silver Ghost engine, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamo
"Dynamo Electric Machine" (end view, partly section, ) A dynamo is an electrical generator that creates direct current using a commutator. Dynamos employed electromagnets for self-starting by using residual magnetic field left in the iron cores of electromagnets (i.e. field coils). If dynamo were never run before it was usual to use a separate battery to excite or ''flash the field'' of the electromagnets to enable self-starting. Dynamos were the first practical electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter. Today, the simpler and more reliable alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using rectifiers (such as va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Maritime Signal Flags
International maritime signal flags are various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals. Various navies have flag systems with additional flags and codes, and other flags are used in special uses, or have historical significance. Usage There are various methods by which the flags can be used as signals: * A series of flags can spell out a message, each flag representing a letter. * Individual flags have specific and standard meanings;AB Nordbok. "The Lore of Ships", page 138. New York: Crescent Books, 1975. for example, diving support vessels raise the "A" (alfa) flag indicating their inability to move from their current location because they have a diver underwater and to warn other vessels to keep clear to avoid endangering the diver(s) with their propellers. * One or more flags form a code word whose meaning can be looked up in a code book held by both parties. An example is the Popham num ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signal Lamp
Signal lamp training during World War II A signal lamp (sometimes called an Aldis lamp or a Morse lamp) is a visual signaling device for optical communication by flashes of a lamp, typically using Morse code. The idea of flashing dots and dashes from a lantern was first put into practice by Captain Philip Howard Colomb, of the Royal Navy, in 1867. Colomb's design used limelight for illumination, and his original code was not the same as Morse code. During World War I, German signalers used optical Morse transmitters called ', with a range of up to 8 km (5 miles) at night, using red filters for undetected communications. Modern signal lamps produce a focused pulse of light, either by opening and closing shutters mounted in front of the lamp, or by tilting a concave mirror. They continue to be used to the present day on naval vessels and for aviation light signals in air traffic control towers, as a backup device in case of a complete failure of an aircraft's radio. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Telegraphy
Wireless telegraphy or radiotelegraphy is the transmission of text messages by radio waves, analogous to electrical telegraphy using electrical cable, cables. Before about 1910, the term ''wireless telegraphy'' was also used for other experimental technologies for transmitting telegraph signals without wires. In radiotelegraphy, information is transmitted by pulses of radio waves of two different lengths called "dots" and "dashes", which spell out text messages, usually in Morse code. In a manual system, the sending operator taps on a switch called a telegraph key which turns the transmitter on and off, producing the pulses of radio waves. At the radio receiver, receiver the pulses are audible in the receiver's speaker as beeps, which are translated back to text by an operator who knows Morse code. Radiotelegraphy was the first means of radio communication. The first practical radio transmitters and radio receiver, receivers invented in 1894–1895 by Guglielmo Marconi used radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Pipe
A speaking tube or voicepipe is a device based on two cone (geometry), cones connected by an air pipe through which Speech communication, speech can be transmitted over an extended distance. Use of pipes was suggested by Francis Bacon in the ''New Atlantis'' (1672). The usage for telecommunications was experimented with and proposed for administrative communications in 1782 by the French monk Dom Gauthey in a memorandum communicated to the Académie des Sciences. Dom Gauthey launched a subscription supported by Benjamin Franklin and other French scientists to finance further experiments, but was not able to raise enough money to go ahead. The British utilitarianism, utilitarist philosopher Jeremy Bentham proposed the inclusion of "conversation tubes" in the architecture of his Panopticon (1787, 1791, 1811) and then as a means of military telecommunication (1793) and at the end as a necessary equipment in the architecture of Ministry (government department), ministries (1825). Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engine Telegraph
An engine order telegraph or E.O.T., also referred to as a Chadburn, is a communications device used on a ship (or submarine) for the pilot on the bridge to order engineers in the engine room to power the vessel at a certain desired speed. Construction In its original form, from the 19th century until about 1950, the device usually consisted of a round dial about in diameter with a knob at the center attached to one or more handles, and an indicator pointer on the face of the dial. There would also be a revolutions per minute (RPM) indicator, worked by a hand crank. Modern EOTs on vessels which still use them use electronic light and sound signals. Operation Traditional EOTs required a pilot wanting to change speed to "ring" the telegraph on the bridge, moving the handle to a different position on the dial. This would ring a bell in the engine room and move their pointer to the position on the dial selected by the bridge. The engineers hear the bell and move their handle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
