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At least one author takes a different approach in order to avoid a need for the expression freestream static pressure. Gracey has written "The static pressure is the atmospheric pressure at the flight level of the aircraft". [15] [16] Gracey then refers to the air pressure at any point close to the aircraft as the local static pressure.
Duty-free permit (or Duty-free vehicle permit or Motor Vehicle Permit on Concessionary Terms) is a permit issued by the Treasury of the Government of Sri Lanka that allows its holder to import a vehicle into Sri Lanka on duties concessions or exempt from certain taxes.
Vacuum systems usually consist of gauges, vapor jet and pumps, vapor traps and valves along with other extensional piping. A vessel that is operating under vacuum system may be any of these types such as processing tank, steam simulator, particle accelerator, or any other type of space that has an enclosed chamber to maintain the system in less than atmospheric gas pressure.
Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure and display pressure mechanically are called pressure gauges, vacuum gauges or compound gauges (vacuum & pressure). The widely used Bourdon gauge is a mechanical device, which both measures and indicates and is probably the best known ...
In compressible fluid dynamics, impact pressure (dynamic pressure) is the difference between total pressure (also known as pitot pressure or stagnation pressure) and static pressure. [ 1 ] [ 2 ] In aerodynamics notation, this quantity is denoted as q c {\displaystyle q_{c}} or Q c {\displaystyle Q_{c}} .
Brendan O'Regan established the world's first duty-free shop at Shannon Airport in Ireland in 1947; [6] it remains in operation today. Designed to provide a service for trans-Atlantic airline passengers typically travelling between Europe and North America whose flights stopped for refuelling on outbound and inbound legs of their journeys, it was an immediate success and has been copied worldwide.
According to the International Monetary Fund, Sri Lanka's GDP in terms of purchasing power parity is second only to the Maldives in the South Asian region in terms of per capita income. As of 2010 [update] , the service sector makes up 60% of GDP, the industrial sector 28%, and the agriculture sector 12%. [ 1 ]
Haikou International Duty-Free City Shopping Complex, is the world's biggest stand-alone duty-free store in terms of physical size. Located in Haikou, Hainan, China, the buildings have a total area of 280,000 square meters. [1] [2] Aelia Duty Free – a brand of Lagardère Travel Retail. [3] Comturist – a chain of duty-free stores.