Avionics

Question 1

Avionics is a shorthand expression for

Answer 1

aeronautical or aviation electronics.
Also known as Aerospace
Systems.

Question 2

what is a cockpit?

Answer 2

The area, usually near the front of an aircraft or spacecraft, from which a pilot controls the craft.

Question 3

What is an EADI?

Answer 3

Electronic Attitude Director Indicator (EADI) provides attitude
information of the aircraft for the pilot (i.e. pitch and roll).

Question 4

Pitch

Answer 4

Pitch refers to the rotation of the aircraft around a side-to-side axis. It can be thought of as the “up and down” or “nodding” motion of the aeroplane.

Question 5

Roll

Answer 5

A roll motion is an up and down movement of the wings of the aircraft

Question 6

Yaw

Answer 6

Yaw is movement of the nose of the aircraft perpendicular to the wings (left or right). Causes change in heading of the aircraft.

Question 7

What is an EHSI?

Answer 7

Electronic Horizontal Situation Indicator (EHSI) provides a relative
horizontal position of the aircraft from radar.

Question 8

Airspeed indicator

Answer 8

Provides the current airspeed of the aircraft.

Question 9

Side-Stick or Control yoke

Answer 9

This is the mechanism used for the pilot to input

manoeuvring commands.

Question 10

What is the ECAM

Answer 10

Electronic Centralised Aircraft Management (ECAM) provides

operational information about the aircraft.

Question 11

What is the “Head up display”?

Answer 11

An overlay that allows critical information (e.g. angle of attack,
flight path, acceleration, airspeed, targets) about the aircrafts
operation to be displayed within the line of sight of the pilot.

Question 12

Head Up Display Control Panel

Answer 12

This is used by the pilot to choose the

data displayed on the head up display.

Question 13

Multi-purpose Display

Answer 13

This is used to display operational displays for

the aircraft e.g. EADI, EHSI.

Question 14

Altimeter

Answer 14

The Altimeter provides the aircraft height (i.e. flight level) above mean
sea level.

Question 15

HOTAS

Answer 15

hands on throttle-and-stick (HOTAS) is the mechanism for the pilot to input manoeuvring
commands and control the engine throttle.

Question 16

Flight Control Systems

Answer 16

These systems provide the safe, accurate and robust
manoeuvring capability of the aircraft.
The operation of these systems ensures that the
motion of the aircraft is accurately controlled
throughout the flight.
• For civil aircraft the Flight Control Systems maintain
safe, stable and comfortable operation of the aircraft
• For military aircraft the Flight Control Systems
provide stability and manoeuvrability, thus ensuring
high performance.

Question 17

Lift

Answer 17

Lift (L) is a force generated mainly by the wings and keeps the aircraft in the
air. It is always perpendicular to the relative wind or the freestream
direction.

Question 18

Weight

Answer 18

Weight (W) is the force on the aircraft due to gravity. For levelled flight, L=W.

Question 19

Thrust

Answer 19

Thrust (T) is the propulsive force generated by the engines and propels the
aircraft forward. For steady flight, T=D.

Question 20

Drag

Answer 20

Drag (D) is a resistive force which hinders the forward motion of the aircraft.
It is always parallel to the relative wind or the freestream direction

Question 21

The flight control system contains 4 basic elements

Answer 21

• Flight Control – converts desired pilot commands from stick to actuator
commands based on measured outputs from the sensors
• Actuator – mechanisms for moving control surfaces of the vehicle
• Aircraft – inputs are the actuator movements needed to move the vehicle
• Sensors – mechanisms used to measure the vehicles motion outputs