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On civil turbofans, the first stage of the LP compressor is often a single-stage fan. If the HP compressor pressure ratio exceeds about 4.5:1, then the unit will probably have variable geometry (i.e. variable stators) on the first few stages, to make the surge line on the compressor map more shallow, to accommodate the shallow working line.
The British pump suppliers could not deliver the pumps fast enough. The British company James Simpson & Co. learned of the Worthington company because of this order, and on 13 December 1885 signed an agreement with the Worthington Pumping Engine Company under which they gained exclusive manufacturing rights for Worthington pumps in Britain. [5]
Simpson and Thompson was created in 1825 as a partnership between James Simpson, engineer of the Chelsea Waterworks, and George Thompson, engine maker. The partnership was dissolved in 1836. [8] James Simpson founded James Simpson & Co., a manufacturer of steam engines and pumps, and made several improvements to the design of these machines. [9]
A 1914 Simpson's balanced two-stroke engine. An opposed-piston engine is a piston engine in which each cylinder has a piston at both ends, and no cylinder head.Petrol and diesel opposed-piston engines have been used mostly in large-scale applications such as ships, military tanks, and factories.
An airliner fuselage, such as this Boeing 737, forms an almost cylindrical pressure vessel.. Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft in order to create a safe and comfortable environment for humans flying at high altitudes.
Wheeler Ridge Compressor Station, in Kern County, California A compressor station is a facility which helps the movement of gas from one location to another in a pipeline system. Gases typically transported over long distances in this way include natural gas , methane , ethylene , hydrogen , ammonia and carbon dioxide .
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