Wednesday, 17 August 2011

AIRCRAFT DISPLAY PAGES IN PFD CIVIL AIRCRAFT

The following pages are displayed on
AFCS INDICATION 
TAKE OFF MODE ON PFD
AIR SPEED INDICATION
VERTICAL SPEED INDICATION

ALTITUDE INDICATION
ADI INDICATION
ADI INDICATION
ADI ANNUCIATION
HSI INDICATION
HSI WEATHER RADAR INDICATION

AFCS INDICATIONS ON PFD


The FMA (Flight Mode Enunciator) is displayed on the top of PFD. The FMA displays indications of auto throttle, autopilot, active AFCS channel, lateral mode and vertical mode.
The FMA Colour code for normal operation is the following:-
Magenta: FMS commands active/engaged mode.
 Green      : Non-FMS commanded active/engaged mode
 White     : armed mode
 Amber    : Alert condition
autopilot indication on pfd
 Red         : Abnormal condition

TAKEOFF MODE ON PFD


 The takeoff mode is a FD only mode and is represented by crossbars on PFD .TO mode commands the airplane to maintain a pitch attitude reference. In take off the autopilot engagement   is not   accepted and FPA mode is inhibited. Lateral mode changes are allowed.
FPA (flight path angle) indication is inhibited for 30 seconds after liftoff when takeoff using raw-data information.
Pressing the TO/GA (Take off or Go Around) button activates the TO mode. Following a landing, the TO mode can be enabled after 5 seconds on ground.
PFD Mode Take off cross Bar

AIRSPEED TAPE INDICATIONS


The below are the detailed description of air speed parameters. All the parts of the air speed indication are listed below with the following parameters. The airspeed tape indications are present on the top left side corner of the primary function display.
1. Selected Airspeed/Mach Read Out
2. Selected Air Speed Bug
3. VFS Speed
4. V2 Speed
5. Air Speed Trend Sector
6. VAC (Vertical alternating current) Speed (AC)
7. VR (rotation) Speed(R)
8. VAP (value added processor) Speed (AP)
9. VREF (approach reference) Speed (RF)
10. Ideal Flap Selection Speed (DOT)
11 V1 Speed
12. Ground Speed
13. Mach Air Speed Read Out
14. Low Speed Awareness Tape
15. Air Speed Rolling Digits
16. VMO/MMO Barber Pole
airspeed tape indication
17. Speed Digit Read Out

VERTICAL SPEED INDICATIONS

               
The Vertical Speed Indicator, abbreviated as the VSI, presents the pilot with information on how fast the aircraft climbs or descents. This is achieved by measuring how fast the ambient pressure changes and translating this as a rate of change in feet per minute. In the below figure VSI indications are given in detail. The vertical speed is displayed in analogical and digital formats on the PFD. Besides presenting the current vertical speed, the Vertical Speed Indicator (VSI) also displays target vertical speed and respective bug, set through the Flight Guidance Controller. The PFD VSI also indicates vertical direction and minimum vertical speed to be attended during evasive maneuvers, according to TCAS commands.  
Vertical Speed Indication
1. Selected Vertical Speed Direction Arrow
2. Selected Vertical Speed Read Out
3. Vertical Speed Scale
4. Selected Vertical Speed Bug
5. Vertical Speed Counter
6. Vertical Speed Readout

ALTITUDE INDICATIONS


The altitude is displayed in tape format on the PFD. The altitude tape also displays the Flight Guidance Controller preselected altitude (ASEL), respective preselected altitude bug, and altitude trending vector.
1. Altitude Tape
2. Metric Altitude Readout
3. Altitude Rolling Digit Readout
4. Barometric Correction
5. Altitude Trend Vector
6. Selected Altitude Bug
7. Selected Altitude Readout
8. Metric Selected Altitude Readout

ADI INDICATIONS AND ADI ANNUNCIATIONS


ADI (Attitude direction indicator) primary function is to display the aircraft’ current attitude. It combines the functions of many electro mechanical indicators into a single electronic display. The ADI indications are 
marked and explained below. The ADI indication is present on top of the Primary flight display.
1. Flight Path Reference Line
2. Airplane Symbol
3. Flight Path Vector Speed Error Line
4. FPA Acceleration Pointer
5. Pitch Limit Indicator
6. SLIP/SKID Indicator
7. Roll SCLAE/LOW Bank Limit Arc
8. Roll Pointer
9. Flight Path
10. Flight Director
11. ILS Glide Slope Deviation
12. FMS Vertical Deviation
13. ILS/VOR Lateral Deviation
14. FMS Lateral Deviation
15. Pitch Angle Scale

ADI

HSI INDICATIONS


Horizontal situation indicator (HSI) is a flight navigation instrument that combines the heading indicator with a CDI (course deviation indicator), in order to provide the pilot with better situational awareness of location with respect to the course line.

1. Primary Navigation Source Annunciation
2. Ground Speed Readout
3. Selected Heading Readout
4. Bearing Pointer
5. Course Selected Pointer
6. Heading Readout
7. Lateral Deviation Indicator
8. Drift Angle Bus
9. Wind Display
10. Course Select Readout
11. Chronometer Readout
12. Lateral Deviation Dots
13. Secondary Radio Tuning
14. Bearing Source Annunciation
15. Selected Heading Bug
16. Preview navigation Source Annunciation
17. Heading Source Annunciation
18. Course select Preview Pointer
19. Desired Track Readout
20. DME Data Block
21. RNP (required navigation performance) Data Block Indication
22. MCDU (multi functional control unit) Annunciation
23. Approach Sensitivity mode Annunciation
24. FMS Lateral Deviation Annunciation
25. Desired Track Pointer
26. Way Point Data Block Indication
27. Selected Heading Out Of View Arrow





HSI Indication







Avionics Displays


The Primary Flight Display (next generation from the EFIS 40/50) combines EADI and EHSI data onto a single display. This design approach is to improve the flight crew‘s situation awareness via integrating multiple critical flight data onto a single screen reducing the amount a pilot needs to monitor multiple instruments. The Primary Flight Display (PFD) displays information critical to flight (which include the Basic-T navigational instrument parameters)
                             a) The aircrafts attitude information (pitch, roll, and yaw)
                              b) The aircraft indicated airspeed
                              c) Aircraft altitude information (Barometric Altitude)
                              d) Barometric pressure information (Baro setting/pressure scale)
                               e) Heading information

PRIMARY FLIGHT DISPLAY
Mechanical gauges have not been completely eliminated from the cockpit with the onset of the PFD; they are retained for backup purposes in the event of total electrical failure.


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