Word is two bytes (ie a 16 bit processor). In its most basic form, the FMC has a 96k word navigation database, where one Key gives access to the subsystems such as FMC, ACARS, DFDMU, etc. The CDU in the photograph has aĭIR INTC key at the beginning of the second row but some have a MENU key. Having two keyboards connected to the one PC. There are normally 2 CDUs but only one FMC. The photograph above is of the Control Display Unit (CDU), which is the pilot To achieve the most economical flight possible. Navigation (latitude, longitude, altitude & time) while optimising performance The FMS can be defined as being capable of four dimensional area Option to have two this is usually only taken by operators into MNPS airspace eg Most aircraft have just one FMC, but there is an Integrated system is known as the Flight Management System (FMS) of which theįMC is just one component. Interacts with the autopilot & flight director, autothrottle and IRSs. Performance database and functions but also added a navigation database which The true FMC was introduced with the 737-300 in 1984 this kept the Byġ982 the autothrottle had been devised and thrust levers could be automaticallyĭriven to the values specified by the PDCS. The PDCS quickly became standard fit and many were also retrofitted. The 727 gave a 3.94% fuel saving because of its longer sector
The 737-200 showed averageįuel savings of 2.95% with a 2 minute increase in trip time over an average 71 With regular line crews and a flight data observer. It was trialed on two in-serviceĪircraft, a Continental 727-200 and a Lufthansa 737-200 for nine months in 1978 It enabled EPR and ASI bugs to be set by the computer and advise on the optimumįlight level, all for best fuel economy. The PDCS was developed jointly by Boeing and Lear Seigler in the late 1970's. Smiths Industries (formerly Lear Seigler) has
#XPLANE 11 FMC SERIES#
First introduced on the series 200 in Feb 1979 as the Performance DataĬomputer System (PDCS), the Flight Management Computer (FMC) was a huge
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