Flight Management System

Presented By: Pravin Londhe

Technology Design Services & SolutionsSoftware | Embedded System | ASIC/FPGA

CONTENTS

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IntroductionWhat is FMS?FMS ComponentsFMS Database-Navigation Database -Performance DatabaseFlight Management Computer Input/OutputFMS Operation FMS AdvantagesFMS Disadvantages

Introduction

Modern aircraft are filled with the latest technolgy.

Technology which greatly reduces workload if the systems are understood and used properly.

The heart of all these systems is the FMS.

What is FMS?

FMS is stand for Flight Management System(FMS) is a specialized computer system that automates a wide variety of in-flight tasks.

FMS acts as the 'brain' of the aircraft navigation system.

FMS Components From the cockpit,the FMS is normally controlled through a

Control Display Unit(CDU) which incorporates

a small screen and keyboard.

The FMS sends the flight plan for display

on the EFIS,Navigation Display(ND).

FMS Database

FMS Contains two types database which are:

NAVIGATION DATABASE

PERFORMANCE DATABASE

FMS Navigation Database All FMS contain a navigation database.

The navigation database contains the elements from which the flight plan is constructed.

Navigation Database include

-Waypoints, -Airways(highways in the sky)

-Radio navigation aids(DME,VOR,ILS)

-Airports(Runways),Holding patterns

-And a variety of other related information

FMS Performance Database During preflight,other information relevant to managing

the flight plan is entered.

This can include performance information such as

-Maximum take-off weight,

-Fuel weight

-Center of gravity.

-It will include altitudes including the initial cruise altitude.

FMS Operation Pilot key in input route information to CDU of FMS.

The navigation and aircraft performance database must be verified.

Routing must be confirmed accurate and correct and any ATC changes to expected routing must be entered manually.

The pilot becomes a manager of this sophisticated system, monitoring progress and updating or changing parameters as necessary.

FMS Advantages FMS are designed to:

-Improve Navigation

-Aid Fuel Efficiency

-Reduce Crew Workload

-More Accurate

FMS Advantages FMS are designed to:

-Navigation

A principal task of the FMS is to determine the aircraft's position

Given the flight plan and the aircraft's position,the FMS calculates the course to follow.

Autopilot can be set to follow the course.

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FMS Advantages-Aid Fuel Efficiency

It calculates performance data and the most fuel-efficient route to be flown based on typical aircraft parameters such as weight,cruise altitude and actual aircraft position,regardless of weather conditions.

-Reduce Crew Workload

Allows pilots more time to analyze and make decisions.(drink coffee to)

FMS Advantages-More Accurate.

Computer generated efficiency profiles are more accurate.

Navigation accuracy is improved through integration and cross referencing of multiple sources.

FMS Disadvantages Error Data Entry.

-Reliant on pilot input.

-There is potential of misinterpretation or erroneous data entry.

Loss of situational awareness

-Loss of situational awareness.Pilots may becomes so involved in operating and monitoring the system that they forget to look outside.

Expensive

Thank You

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