The word aerostat was originally French and is derived from the greek aer (air) + statos (standing). French ( français,) is a Romance language spoken around the world by 118 million people as a native language and by about 180 to 260 million people Greek (el ελληνική γλώσσα or simply el ελληνικά — "Hellenic" is an Indo-European language, spoken today by 15-22 million people mainly An aerostat is a lighter than air object that can stay stationary in the air. Some Gases are buoyant in Air because they have densities lower than that of air (about 1 Aerostats include free balloons, airships, moored balloons and tethered Helikites. "Ballooning" redirects here For the behavior of Spiders and other Arthropods see Ballooning (spider. Terminology In some countries airships are also known as dirigibles from the French (fr ''diriger'' to direct plus -ible) meaning "directable" A moored balloon is an inflated fabric structure often shaped like an Airship and usually filled with Helium that is restrained by a cable attached to the ground A tether is a cord that anchors something movable to a stationary point A helikite is a combination of a Helium Balloon and a Kite to form a single aerodynamically sound Tethered Aircraft, that Such a vehicle is lifted by buoyancy, containing a gas less dense than air within an envelope. In Physics, buoyancy ( BrE IPA: /ˈbɔɪənsi/ is the upward Force on an object produced by the surrounding liquid or gas in which it is This page is about the physical properties of gas as a state of matter The density of a material is defined as its Mass per unit Volume: \rho = \frac{m}{V} Different materials usually have different
The gas is generally helium or hydrogen as these are lightest. Helium ( He) is a colorless odorless tasteless non-toxic Inert Monatomic Chemical Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 Helium is safest as it is inert and so does not burn, but hydrogen has slightly more lift than helium. Safety is the state of being "safe" (from French sauf) the condition of being protected against physical social spiritual financial political In English to be inert is to be in a state of doing little or nothing Combustion or burning is a complex sequence of Exothermic chemical reactions between a Fuel and an Oxidant accompanied by the production of
Technically, aerostats are capable of providing "aerostatic" lift in that the force upwards arises without movement through the surrounding air mass. This contrasts with aerodynamic lift which requires the movement of at least some part of the aircraft through the surrounding air mass. In the context of a Fluid flow relative to a body the lift force is the component of the Aerodynamic force that is Perpendicular to the flow However, in reality most aerostats (except spherical balloons) obtain lift from both aerodynamic lift and pure gas lift at some time or other. "Globose" redirects here See also Globose nucleus. A sphere (from Greek σφαίρα - sphaira, "globe
Aerostats are generally tethered lighter-than-air objects. Types of tethered aerostat include spherical balloons, blimps and Helikites.
Spherical balloons have the lowest surface-area-to-volume ratio and they lift well in low or nil wind. Surface area is the measure of how much exposed Area an object has The volume of any solid plasma vacuum or theoretical object is how much three- Dimensional space it occupies often quantified numerically A ratio is an expression which compares quantities relative to each other Wind is the flow of Air or other Gases that compose an Atmosphere (including but not limited to the Earth's) However, unless they are very large, in most winds they quickly begin to be pushed down to the ground. In light winds very large rounded balloons are used to lift people for recreational flight, as in Bournemouth, England. Flight is the process by which an object achieves sustained movement either through the Air (or movement beyond Earth's atmosphere, in the case of Bournemouth ( is a large coastal resort town in the Borough of Bournemouth in Dorset, England. England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland
Blimp shaped balloons were originally designed as barrage balloons just before the first world war. World War I (abbreviated WWI; also known as the First World War, the Great War, and the War to End All The name blimp derived from the British Admiralty's description of them as "Balloon-Limp". Admiral is the rank, or part of the name of the ranks of the highest Naval officers Blimps are also officially known by the military as "Kite-Balloons" due to their stern fins. A kite is a flying tethered object that depends upon the tension of a tethering system Thousands of Blimps were used in both world wars. Blimps have change little in design since World War One. The British L. Z. type of World War Two was based upon the French Caquot type of 1915. A British L. Z. barrage was sent to the USA in 1942 where it was copied and became the ZK Type made by Goodyear. The United States of America —commonly referred to as the The Goodyear Tire & Rubber Company was founded in 1898 by Frank Seiberling. Today most blimps are used for advertising in fair weather. Advertising is a form of Communication that typically attempts to persuade potential Customers to Purchase or to consume more of a particular Brand The weather is a set of all the phenomena occurring in a given Atmosphere at a given Time. Some massive blimps are used for lifting radar or surveillance cameras. Radar is a system that uses electromagnetic waves to identify the range altitude direction or speed of both moving and fixed objects such as Aircraft, ships A camera is a device used to capture images either as still Photographs or as sequences of moving images ( Movies or Videos. Blimps are essentially sausage shaped to reduce frontal area and wind resistance. Blimps have stern fins to keep the blimp pointing into the wind. When they are correctly made they are more stable than spherical balloons, however their large surface area to volume ratio means they need to be large to lift a reasonable payload. Flight dynamics is the science of air and space vehicle orientation and control in three dimensions In military aircraft or space exploration the payload is the carrying capacity of an aircraft or space ship including as Cargo, Munitions scientific instruments Also, as a general rule blimps need to be large to cope with high winds. Blimps long thin shape necessitates a device to equalise pressure in the envelope called a ballonet if they are to go over 1000ft altitude, and to cope with large atmospheric temperature changes. Pressure (symbol 'p' is the force per unit Area applied to an object in a direction perpendicular to the surface Ballonets are air-filled bags that are located inside the envelope of an Airship. An atmosphere (from Greek ατμός - atmos, " Vapor " + σφαίρα - sphaira, " Sphere " Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature
When set at an angle to the wind, blimps can produce aerodynamic lift especially from their stern fins. When blimps do this it is called "kiting". As the wind increases further this lift causes the stern to rise and the nose to lower. The term nose cone is used to refer to the forwardmost section of a Rocket, guided Missile or Aircraft. The low nose is further pushed down by the wind leading to an instability called "porpoising". To reduce porpoising the tethers are set to further raise the nose in high winds, however this increases the drag on the blimp causing the blimp to lose height and the tether to lay over to give "quatenary" problems. The handling and cost implications of the blimps large size means they are not commonly used by the general public. However, the military sometimes use large blimps for surveillance and radio relay due to their ability to stay in the air for long periods of time in reasonable weather. A military is an Organization authorized by its Nation to use force usually including use of Weapons in defending its Country (or by attacking Radio stations that cannot communicate directly due to distance terrain or other difficulties sometimes use an intermediate radio relay station to relay the signals For other uses see Time (disambiguation Time is a component of a measuring system used to sequence events to compare the durations of
Helikites are a combination of kite and aerostat. They are said to fly to greater altitude and in higher winds than comparably sized blimps. They are a tethered aerostat made of a combination of an oblate spheroid helium balloon and a kite. Helikites were designed, named and patented by Sandy Allsopp in 1993. A patent is a set of Exclusive rights granted by a State to an inventor or his assignee for a fixed period of time in exchange for a disclosure of an They are made by Allsopp Helikites Ltd, in Damerham, Hampshire, England. Damerham is a village in Hampshire, England, located near to Fordingbridge. Wildlife Hampshire has wildlife typical of the island of Great Britain Helikites are lighter than air and so will also fly in no wind to thousands of feet. A foot (plural feet or foot; symbol or abbreviation ft or sometimes &prime – the prime symbol) is a non-SI unit However, they also utilise aerodynamic lift in a stable manner when wind is available. Due to their rounder shape, Helikites have a better surface-area-to-volume ratio than blimps so have greater aerostatic lift in no wind.
Aerostats are used for lifting military airborne radar equipment, parachute training, for advertising, lifting meterological equipment, raising antennas, gaining line of sight for ad hoc radio relay stations, lifting video equipment and digital cameras, for jungle marker balloon use and birdscaring. Meteorology (from Greek grc μετέωρος metéōros, "high in the sky" and grc -λογία -logia) is the Interdisciplinary An antenna is a Transducer designed to transmit or Receive electromagnetic waves In other words antennas convert electromagnetic waves into Line-of-sight propagation refers to Electro-magnetic radiation including light emissions traveling in a straight line Ad hoc is a Latin phrase which means "for this [ Purpose ]" Video is the technology of electronically capturing, Recording, processing storing transmitting and reconstructing a sequence of Still images A bird scarer is any one of a number devices designed to scare birds usually employed by Farmers to dissuade birds from eating recently planted arable crops
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Types of aerostats:
 Moored balloons can carry instruments and sensors for long durations that are impractical for other aircraft. A moored balloon is an inflated fabric structure often shaped like an Airship and usually filled with Helium that is restrained by a cable attached to the ground |
 Free balloons are free moving, unpowered aerostats. "Ballooning" redirects here For the behavior of Spiders and other Arthropods see Ballooning (spider. The above is a hot air balloon. The hot air balloon is the oldest successful human-carrying Flight technology There are also gas balloons. A gas balloon is any Balloon that stays aloft due to being filled with a gas less dense than air or Lighter than air (such as Helium or Hydrogen |
 Airships are free flying aerostats that can be propelled and steered. Terminology In some countries airships are also known as dirigibles from the French (fr ''diriger'' to direct plus -ible) meaning "directable" |
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Aerostatics is the study of gases that are not in motion The corresponding study of gases in motion is called Aerodynamics. Terminology In some countries airships are also known as dirigibles from the French (fr ''diriger'' to direct plus -ible) meaning "directable" "Ballooning" redirects here For the behavior of Spiders and other Arthropods see Ballooning (spider. In Physics, buoyancy ( BrE IPA: /ˈbɔɪənsi/ is the upward Force on an object produced by the surrounding liquid or gas in which it is Some Gases are buoyant in Air because they have densities lower than that of air (about 1 A moored balloon is an inflated fabric structure often shaped like an Airship and usually filled with Helium that is restrained by a cable attached to the groundDapyx Software network: MP3 Explorer | Ebook Manager | Zenithic