6
FMS GENERAL DESCRIPTION
SYSTEM OVERVIEW
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© THALES AVIONICS S.A.
AIRBUS A318/319/320/321
The main interfaces for crew inputs to FMGS are FCU, MCDUs and
Thrust Levers (T/L). Outputs of FMGS are monitored on the EFIS (PFD
and ND).
The FCU is the short-term (tactical) interface, and has the following
functions:
−
Engagement of AP, FD, A/THR,
−
Selection of guidance modes,
−
Manual selection of flight parameters.
Layout of the FCU is shown below.
The MCDUs (see Fold-out at the end of the Guide) are the long-term
(strategic) interface between crew and FMGC.
Main functions of the MCDUs include:
−
Insertion of initial position to align IRUs before flight,
−
Creation and display of Primary, Secondary and Alternate flight plan,
−
Insertion of weight, CG, fuel quantity for time and fuel predictions,
and performance optimisation,
−
Insertion of take-off and approach parameters,
Summary of Contents for FMGS
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