Av Flashcards

1
Q

Avionics consits of

A

Navigation, Communications, Sensors, Mission system, Displays and controls

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2
Q
  • Synthetic vision
A

Is 3d imaging

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3
Q
  • Flight control devices
A
Magnetic 
compass, 
altimeter, 
air speed indicator,
 directional gyroscope, 
vertical speed indicator,
 turning and sliding gyroscope, 
gyrocompass, 
position indicator
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4
Q

Avionics 4 functions

A

Control measures,
Means of operation,
Navigational aids,
Various other devices

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5
Q
  • EFIS
A

( Electronic flight instrument system)

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6
Q
  • Situational information
A

Provide general information

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7
Q
  • Team information
A

To correct errors made, such as flight director

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8
Q
  • Status information
A

Additional information such as oxygen, amount of fuel

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9
Q
  • Devices can also be characterized as
A

o Quantitative data- accurate determined data
o Quality data- directional indicator
o Displaying test data- to check if the given data is within limits
o Settings devices- engine powers or to get the system in sync
o Tracking device- To maintain flight level or speed control

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10
Q
  • Main devices for flying an aircraft is
A
o	Attitude indicator (AI)
o	Direction indicator (DI)
o	Barometric altitude, Altimeter(ALT)
o	Airspeed indicator (ASI)
o	Vertical speed indicator (VSI)
o	Turn indicator (TI)
o	(RPM) (Tachometer)
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11
Q

(EICAS)

A
  • Engine indicating and crew alerting system
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12
Q
  • Screens available in front of the pilot
A

o Two primary flight displays (PFD)
o Two navigation displays (ND)
o Engine/Warning displays (EWD)
o System parameter displays (SD)

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13
Q

(FDS)

A
  • Flight director system
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14
Q

What does fds contain

A

o Contains EADI and EHSI

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15
Q

(EFIS)

A
  • Electronic flight instrument system
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16
Q
  • PFD has
A

airspeed, height meter, vertical speed meter, landing system

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17
Q
  • ND displays
A

flight route, compass, or radar weather data

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18
Q
  • Pedestal is equipped with
A
o	Multipurpose control display unit (MCDU)
o	Radio management panel
o	Audio control panel 
o	Thrust
o	Flaps
o	Spoilers
o	Engine start
o	Pitch trim wheel
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19
Q
  • Avionics bay is usually located at
A

the front of the aircraft and contains all computers that receive information from various sensors.

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20
Q

(FCS)

A

2) Flight control system

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21
Q
  • Three control system architectures
A

o Central
o Distributed
o Federated

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22
Q

(AFCS)

A
  • Automatic flight control system
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23
Q

(SAS)

A

o Stabilization augmentation system

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24
Q
  • To increase FCS viability
A

it is necessary to distribute the fcs and communication channels within the aircraft

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25
Q
  • In aviation, communication between the modules and the periphery is usually via the
A

ARINC bus

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26
Q

(ADC)

A
  • Analogue to digital
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27
Q

ACE

A

(Actuator Control Electronic)

28
Q

(LRUs)

A
  • Line Replaceable Units
29
Q

operations modes

A
o	Init mode
o	Normal mode
o	Alternative mode
o	Direct mode
o	Failsafe mode
o	calibration mode
30
Q

FMS

A
  • Flight management systems
31
Q

FMS PROVIDES?

A

o Provides a digital platform for flight and navigation planning;
o Serves on Flight Control;
o Monitors flight modes while providing stability;
o Calculates optimal flight profiles to minimize flight costs;
o Provides automatic control of engine thrust

32
Q

NDB

A
  • Navigation Data Base
33
Q
  • NDB can be searched in the
A

MCDU

34
Q
  • MCDU is used for
A

for flight planning and etc

35
Q

EFIS

A
  • Electronic flight instrument system
36
Q
  • Electronic flight instrument system
A
o	Character generator(SG) 
o	Control panel(VP)
o	Brightness control(RVE)
o	Primary flight viewer (PFD)
o	Navigation viewer (ND)
37
Q

DFBW

A
  • Digital fly by wire
38
Q
  • Digital fly by wire
A

o FCS;
o Autopilot;
o SID (Standard instrument departure);
o STAR (Standard arrival);
o FEPS (Flight Envelope Protection System);
o TCAS (traffic collision avoidance system);
o GPWS (ground proximity warning system).

39
Q

3) Automatic flight control used for

A

o Better short-term aircrafts fluctuations
o Stabilize angles of tilt
o Stabilize barometric and geometric flight altitudes
o Set the aircraft on a horizontal flight
o Divert aircraft from dangerous paths

40
Q
  • Problems with Autopilot
A

o Issues with inputs and common errors
o Quorum method is using 4 computers parallel
o Some modes can not be tested on ground due to its complexity

41
Q
  • Flight safety
A

flight envelope protection system

42
Q
  • Advantages of the DFBW system
A

o It has completely replaced cables, springs, pistons, and sensors made it way lighter
o It gave designers better flexibility in design, size, and layout of components
o System is smaller and more reliable
o Could be electrically transmitted without distortion
o Temperature changes have little effect on electrical alarms
o Easily installed and repaired
o Sufficient and safer
o Very accurate and smooth response on demands
o Gave new features that was not possible with pure mechanics
o Easy to modify architecture as of the relevant software (SW)

43
Q
  • Disadvantages of dfbw
A

o Initial cost and complexity of such systems
o Make smaller aircrafts cost more
o Increased sensitivity to high intensity electromagnetic field

44
Q

5) Air data measuring instruments

A
  • Air data devices or aerometric devices are aviation devise preforming measurements
  • Are done by calculating the static pressure and the air resistance using pitot tube
45
Q
  • Airdata Contains four elements
A

o Primary information sensor
o Measuring element
o Connector which strengthens and transmit these signals
o The display element

46
Q
  • Sylphons
A

widely distributed membrane looking to get large deformation in pressure changes

47
Q
  • Tubular springs
A

thin-walled curved tubes, under pressure it changes shape

48
Q
  • Pilot-static system
A

Its purpose to constant supply the full air pressure and static resistance

49
Q
  • Air data computer-
A

o Altitude module;
o Device’s air speed (IAS) module;
o Altitude change module;
o Mach number module;

50
Q
  • Five different types of altitude measurements
A

o True Altitude- Above Sea level
o Indicated Altitude – The altitude shown on the altimeter
o Pressure Altitude- On the standard datum plane used above 34000
o Absolute Altitude- The altitude above a terrain
o Density Altitude- the imaginary box we set and see the density in

51
Q
  • Altimeter error
A
o	Mechanical error placed wrong 
o	Inherent error could be position error or scale error
o	Hysteresis
o	Reversal errors
o	Pressure error
52
Q
  • Altimeter influencing factors
A

o Mountain effect
o Downdraft and turbulence
o Pressure drop

53
Q

6) Speed indicator

A
  • Indicated Air Speed Vi
  • Calibrated airspeed Vc
  • The true airspeed V
  • Ground speed
  • Modern air speed indicators
54
Q
  • Compass errors
A

o Acceleration error
o Turning errors
o temperature variation

55
Q
  • Radar system components
A

o Electromagnetic wave pulse emission and reception method;
o The method of controlling and scanning such a pulse in both the horizontal and vertical planes;
o The method of mapping the result to the pilot;
o Radar operation control method.

56
Q

VOR

A

(Very High Frequency Omni Directional Radio Range)

57
Q
  • Two versions VOR radio beacons
A

o Operating distance of about 370 km at the flight altitude of 8-10 km. They are intended to ensure the flights of air routes
o Operating range of about 40 km. They are designed for airports.

58
Q

DME

A

(Distance Measuring Equipment)

59
Q

8) ILS

A

Instrument landing system

60
Q
  • MLS
A

Microwave landing system

61
Q
  • ILS category
A

o Category I system, which allows for landings at not less than 60 m height above the runway
o ILS Category II allows the landing when the decision height is 30 m and the distance to the beginning of the runway is 350 m.
o ILS Category III, the aircraft lands in automatic mode. In this mode, there is no decision-making altitude, and distance to the beginning of the runway has to be less than 250 m by category IIIa or 50-250 m for the category IIIc

62
Q
  • Differences MLS, ILS
A
  • Unlike ILS, which required a variety of frequencies to broadcast the various signals, MLS used a single frequency, broadcasting the azimuth and altitude information one after the other.
63
Q

Influence of satellite altitude

A
o	Ionosphere
o	Satellite elevation height
o	Influence of water vapor
o	Satellite and receiver clock errors
o	Multi-path propagation
64
Q
  • GLONASS
A

. It is a Russian satellite navigation system. Is sold by Russia and has a higher accuracy then normal GPS

65
Q
  • COMPASS (Bei Dou)
A

It is a Chinese navigation system consisting of two different groups of satellites

66
Q

10) Types of antennas

A

o Dipolar
o Markoni
o Loop

67
Q

11) Types of radio communication

A

o Simplex

o Duplex