AIRCRAFT SYSTEM 1AIRCRAFT SYSTEMSBy NameCourseInstructorInstitutionLocationDate
AIRCRAFT SYSTEM 2Table of ContentsTopic PageSimplex3Duplex4Triplex7Quadruplex8Dual-Duplex10References13
AIRCRAFT SYSTEM 3SimplexThe term Simplex in aircraft systems has significantly been used in the turbine engine fuel system.Simplex fuel nozzle was one of the first types of nozzles to be used in turbine engines, and it was later replaced in most installations with a duplex nozzle, which was giving better atomization at idling and starting speeds. Up to date, the simplex nozzle is still applicable in several facilities in aircrafts. All the simplex nozzles consist of the nozzle tip, a strainer which is made up of a screen of fine-mesh, an insert and support[CITATION Ell17 \p 345 \l 2057 ].Gas turbines systems, particularly in the cases of aircraft engines, are greatly exacting their demands for fuel nozzles. That is due to the high velocity which is experienced in the combustion chambers in relation to the size of the combustion apparatus. For the purpose of promoting proper combustion very high levels of fuel, atomization must be achieved[CITATION Reg13 \p 254 \l 2057 ]. There are many challenges of attaining consistent good spray and atomization of the fuel. The diagrams below explains the simplex fuel nozzle into details.Fig 1;the siplex fuel layout source www.jetairgroup.com
AIRCRAFT SYSTEM 4Fig 2; Simplex fuel nozzle image source www.jetairgroupThe examples where the term simplex has been used in aircraft systems.The term simplex has been used in the turbine fuel system, where it is used to explain a type of a fuel nozzle.DuplexThe term duplex has been widely used in aircraft systems as discussed below:Aircraft duplex systemAircraft duplex system refers to a system used for actuating transmitting and feedback the signals between the control centre and the remote portion of an aircraft by the use of standardwires. Operating signals from electrohydraulic valve and signals from a linear varying differential transformer which is used in the monitoring of the valve operations mostly occur in a considerably different frequency spans and they are transferred concurrently on the ordinary wire[CITATION Phi \p 34 \l 2057 ]. Signal discrimination is usually accomplished by the application of capacitors and inductors which are connected in series and also by use
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