air-pneumatic structure

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• pneumatic structure — Membrane structure that is stabilized by the pressure of compressed air. Air supported structures are supported by internal air pressure. A network of cables stiffens the fabric, and the assembly is supported by a rigid ring at the edge. The air… …   Universalium

• Pneumatic artificial muscles — Air muscle contracting and extending. Pneumatic artificial muscles (PAMs) are contractile or extensional devices operated by pressurized air filling a pneumatic bladder. In a vague approximation of human muscles, PAMs are usually grouped in pairs …   Wikipedia

• Pneumatic stabilized platform — A Pneumatic stabilized platform (PSP) is a technology used to float a very large floating structure (VLFS). PSP utilizes indirect displacement, in which a platform rests on trapped air that displaces the water. The primary buoyancy force is… …   Wikipedia

• pneumatic — 1. Relating to air or gas, or to a structure filled with air. 2. Relating to respiration. [G. pneumatikos] * * * pneu·mat·ic n(y)u̇ mat ik adj of, relating to, or using gas (as air): as a) moved or worked by air pressure b) adapted for holding or …   Medical dictionary

• Pneumatic caisson — Caisson Cais son, n. [F., fr. caisse, case, chest. See 1st {Case}.] 1. (Mil.) (a) A chest to hold ammunition. (b) A four wheeled carriage for conveying ammunition, consisting of two parts, a body and a limber. In light field batteries there is… …   The Collaborative International Dictionary of English

• Tensile structure — A tensile structure is a construction of elements carrying only tension and no compression or bending. The term tensile should not be confused with tensegrity, which is a structural form with both tension and compression elements.Most tensile… …   Wikipedia

• Compressed-air energy storage — (CAES) refers to the compression of airto be used later as energy source. At utility scale, it can be stored during periods of low energy demand (off peak), for use in meeting periods of higher demand (peak load). Alternatively it can be used to… …   Wikipedia

• Leviathan and the Air-Pump — Infobox Book name = Leviathan and the Air Pump title orig = translator = image caption = author = Steven Shapin and Simon Schaffer illustrator = cover artist = country = USA language = English series = genre = publisher = Princeton University… …   Wikipedia

• Experiments and Observations on Different Kinds of Air — (1774–86) is a six volume work published by eighteenth century British polymath Joseph Priestley which reports a series of his experiments on airs or gases, most notably his discovery of oxygen gas (which he called dephlogisticated air ).… …   Wikipedia

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium