Flight Management System
A flight management system (FMS) is a fundamental component of a modern airliner's avionics.
An FMS is a specialized computer system that
automates a wide variety of in-flight tasks,
reducing the workload on the flight crew to the point that
modern civilian aircraft no longer carry flight engineers or navigators.
یکی از تاثیرات سیستم FMS بی نیاز کردن هواپیما به مهندس پرواز .
A primary function is in-flight management of the flight plan. Using various sensors (such as GPS and INS often backed up by radio navigation) to
determine the aircraft's position,
the FMS can guide the aircraft along the flight plan.
GPS و همچنین INS اساس سیستم FMS را تشکیل می دهند.
From the cockpit, the FMS is normally controlled through a Control Display Unit (CDU) which incorporates a small screen and keyboard or touchscreen
یک پنل کنترلی در سیستم FMS وجود داردبه نام CDU به شکل زیر :
The FMS sends the flight plan for display to the Electronic Flight Instrument System (EFIS), Navigation Display (ND), or Multifunction Display (MFD).
اولین بار سیستم FMS در هواپیمای بوئینگ 767 به کار گرفته شد.
The modern FMS was introduced on the Boeing 767, though earlier navigation computers did exist.[1] Now, systems similar to FMS exist on aircraft as small as the Cessna 182
All FMS contain a navigation database.
The navigation database contains the elements from which the flight plan is constructed.
These are defined via the ARINC 424 standard.
The navigation database (NDB) is normally updated every 28 days, in order to ensure that its contents are current.
Each FMS contains only a subset of the ARINC / AIRAC data, relevant to the capabilities of the FMS.
