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The CB postcode area, also known as the Cambridge postcode area, [2] is a group of sixteen postcode districts in the east of England, within five post towns.These cover much of south and east Cambridgeshire (including Cambridge and Ely), plus parts of west Suffolk (including Newmarket and Haverhill) and north-west Essex (including Saffron Walden), and a very small part of Norfolk.
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English: Labelled map of Royal Mail postcode districts of the CB postcode area. Indicative postcode districts shown in red, post towns shown in grey. Equirectangular projection with latitude stretching 160%, WGS84 datum. Geographic limits: Main 1:258,000 map: West: 0.274W; East: 0.718E; North: 52.538N; South: 51.918N
Vehicle speed affects this, in rough proportion to the engine effort, thus giving crude self-regulatory feedback. Where an additional cooling fan is driven by the engine, this also tracks engine speed similarly. Engine-driven fans are often regulated by a fan clutch from the drivebelt, which slips and reduces the fan speed at low temperatures ...
The General Electric CF34 is a civilian high-bypass turbofan developed by GE Aviation from its TF34 military engine. The CF34 is used on a number of business and regional jets , including the Bombardier CRJ series, the Embraer E-Jets , and Comac ARJ21 .
The JT8D is an axial-flow front turbofan engine incorporating a two-spool design. There are two coaxially-mounted independent rotating assemblies: one rotating assembly for the low pressure compressor (LPC) which consists of the first six stages (i.e. six pairs of rotating and stator blades, including the first two stages which are for the bypass turbofan), driven by the second (downstream ...
Diagram of a fan disk Fan disk assembly diagram, showing one blade and attachment hardware Cross section of fan disk Failed fan disk recovered from the center engine of UAL 232. A fan disk is the central hub of a fan in a turbofan engine. Fan blades are attached to the fan disk, which is rotated by a shaft driven by a gas turbine. [1]
The engine was aimed at ultraquiet STOL aircraft operating from city-centre airports. In a bid for increased efficiency with speed, a development of the turbofan and turboprop known as a propfan engine was created that had an unducted fan. The fan blades are situated outside of the duct, so that it appears like a turboprop with wide scimitar ...