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SkyCat
SkyCat (a portmanteau of "Sky Catamaran") is a class of proposed heavy-lift hybrid airships which derive more than half of their lift by helium buoyancy and the balance via aerodynamic lift produced by aerodynamic shaping. The SkyCat design incorporates hover cushion technology in place of wheels, allowing craft to take off and land anywhere, including remote regions without need for airports or sophisticated forward based infrastructure. The SkyKitten, a 1/6 linear scale model of a SkyCat design was built and flown by Advanced Technologies Group (ATG) (now-defunct successor to Airship Industries) in the United Kingdom at Cardington. "SkyFreighter" is the name given by the Hybrid Air Vehicles to one of its implementations of the SkyCat design. These are proposed to carry heavy-lift and ultra-heavy-lift cargo payloads from 50 tons net payload to as heavy as 1000 tons which may be a mix of outsized and/or containerized objects. The Skycat is almost impervious to light ordnance, su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airship Industries
Airship Industries was a British manufacturers of modern non-rigid airships (blimps) active under that name from 1980 to 1990 and controlled for part of that time by Alan Bond. The first company, Aerospace Developments, was founded in 1970, and a successor, Hybrid Air Vehicles, remains active . Airship Industries itself was active between 1980 and 1990. In addition to the manufacture of non-rigid airships, several of the companies were involved in abortive proposals for many other non-rigid and rigid types. The historic airship facilities at Cardington, Bedfordshire (formerly the Royal Airship Works and RAF Cardington), were used as a base for the firm's test flying and an assembly site for some of its airships. Aerospace Developments, 1970–79 Beginnings and the Shell International Gas project Aerospace Developments (AD) was founded in 1970 by John Wood and Roger Munk (Jeffrey Roger Munk 1947–2010). Its first major project was the design of a very large – long with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Air Vehicles
Hybrid Air Vehicles (HAV) Limited is a British limited company and a British manufacturer of hybrid airships, though none have been built since the crash of its last demonstrator. These aircraft use both aerodynamics and lighter-than-air (LTA) technology to generate lift, potentially allowing the vehicle to stay aloft for several weeks. The company developed the HAV 3 technology demonstrator. This won it the US Army LEMV contract, in association with Northrop Grumman as the prime contractor, and led to the HAV 304. Following termination of the LEMV project, the HAV 304 was rebuilt as the Airlander 10. It was the largest aircraft flying at the time. The Airlander 10 was damaged in one event in 2016 and then written off after another event at the mast in 2017. The company has stated that it will not be rebuilt. History Origins HAV is the latest in a line of companies to acquire and develop airship technologies in the UK. Aerospace Developments was formed in 1971 and since then ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Airship
A hybrid airship or plimp is a powered aircraft that obtains some of its lift as a lighter-than-air (LTA) airship and some from aerodynamic lift as a heavier-than-air aerodyne. A ''dynastat'' is a hybrid airship with fixed wings and/or a lifting body and is typically intended for long-endurance flights. It requires forward flight to create the aerodynamic lift component. A ''rotastat'' is a hybrid airship with rotary wings and is typically intended for heavy lift applications. Its rotary wings can provide lift even when hovering or manoeuvring vertically, like a helicopter. No production designs have been built, but several manned and unmanned prototypes have flown. The term "hybrid airship" has also been used to describe an airship comprising a mix of rigid, semi-rigid, and non-rigid construction. Features Conventional airships have low operating costs because they need no engine power to remain airborne, but are limited in several ways, including low payload/volume ratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airship Configurations
An airship or dirigible balloon is a type of aerostat or lighter-than-air aircraft that can navigate through the air under its own power. Aerostats gain their lift from a lifting gas that is less dense than the surrounding air. In early dirigibles, the lifting gas used was hydrogen, due to its high lifting capacity and ready availability. Helium gas has almost the same lifting capacity and is not flammable, unlike hydrogen, but is rare and relatively expensive. Significant amounts were first discovered in the United States and for a while helium was only available for airships in that country. Most airships built since the 1960s have used helium, though some have used hot air.A few airships after World War II used hydrogen. The first British airship to use helium was the ''Chitty Bang Bang'' of 1967. The envelope of an airship may form the gasbag, or it may contain a number of gas-filled cells. An airship also has engines, crew, and optionally also payload accommodation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portmanteau
A portmanteau word, or portmanteau (, ) is a blend of wordsGarner's Modern American Usage , p. 644. in which parts of multiple words are combined into a new word, as in ''smog'', coined by blending ''smoke'' and ''fog'', or ''motel'', from ''motor'' and ''hotel''. In , a portmanteau is a single morph that is analyzed as representing two (or more) underlying s. When portmanteaus shorten es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catamaran
A Formula 16 beachable catamaran Powered catamaran passenger ferry at Salem, Massachusetts, United States A catamaran () (informally, a "cat") is a multi-hulled watercraft featuring two parallel hulls of equal size. It is a geometry-stabilized craft, deriving its stability from its wide beam, rather than from a ballasted keel as with a monohull boat. Catamarans typically have less hull volume, smaller displacement, and shallower draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on the water can reduce both heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes. Catamarans were invented by the Austronesian peoples which enabled their expansion to the islands of the Indian and Pacific Oceans. Catamarans range in size from small sailing or rowing ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helium
Helium (from el, ἥλιος, helios, lit=sun) is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling and melting point are the lowest among all the elements. It is the second lightest and second most abundant element in the observable universe (hydrogen is the lightest and most abundant). It is present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. Its abundance is similar to this in both the Sun and in Jupiter, due to the very high nuclear binding energy (per nucleon) of helium-4, with respect to the next three elements after helium. This helium-4 binding energy also accounts for why it is a product of both nuclear fusion and radioactive decay. The most common isotope of helium in the universe is helium-4, the vast majority of which was formed during t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (force)
A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it can act in any direction at right angles to the flow. If the surrounding fluid is air, the force is called an aerodynamic force. In water or any other liquid, it is called a hydrodynamic force. Dynamic lift is distinguished from other kinds of lift in fluids. Aerostatic lift or buoyancy, in which an internal fluid is lighter than the surrounding fluid, does not require movement and is used by balloons, blimps, dirigibles, boats, and submarines. Planing lift, in which only the lower portion of the body is immersed in a liquid flow, is used by motorboats, surfboards, windsurfers, sailboats, and water-skis. Overview A fluid flowing arou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is a global online video platform, online video sharing and social media, social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the List of most visited websites, second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's Google AdSens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between the Kingdom of England (which included Wales, annexed in 1542) and the Kingdom of Scotland in 170 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardington, Bedfordshire
Cardington is a village and civil parish in the Borough of Bedford in Bedfordshire, England. Part of the ancient hundred of Wixamtree, the settlement is best known in connection with the Cardington airship works founded by Short Brothers during World War I, which later became an RAF training station. However most of the former RAF station is actually in the parish of Eastcotts, as is the settlement of Shortstown, which was originally built by Short Brothers for its workers. The village of Cardington is located to the north east of Shortstown and the RAF station, and houses most of the population of the parish, which was 270 in 2005, making it one of the least populated parishes in Bedfordshire. Sites of interest The Church of St Mary the Virgin has pieces dating from the 12th century, although the church itself was mostly rebuilt between 1898 and 1902. It is a Grade II listed building. Airships, barrage balloons and RAF Cardington Cardington became one of the major Briti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PET Film (biaxially Oriented)
BoPET (biaxially-oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, chemical and dimensional stability, transparency, reflectivity, gas and aroma barrier properties, and electrical insulation. A variety of companies manufacture boPET and other polyester films under different brand names. In the UK and US, the best-known trade names are Mylar, Melinex, and Hostaphan. History BoPET film was developed in the mid-1950s,Izard, Emmette Farr"Production of polyethylene terephthalate" U.S. patent no. 2,534,028 (filed: 1948 May 13; issued: 1950 December 12). originally by DuPont, Imperial Chemical Industries (ICI), and Hoechst. In 1955 Eastman Kodak used Mylar as a support for photographic film and called it "ESTAR Base". The very thin and tough film allowed reels to be exposed on long-range U-2 reconnaissance flights. In 1964, NASA launched Echo II, a diameter balloon constructed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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