Week 5: Gyroscopic Instruments and EIS Flashcards
This instrument measures the rate of rotation about the vertical axis?
Turn Indicator
This instrument is used to provide a stabilized heading indication with reference to magnetic north?
Directional Gyro
When poor visibility conditions exist, the flight crew refers to an instrument called what?
ADI
This display format includes: attitude, airspeed, vertical speed, and navigation plus TCAS resolution advisories
PFD
What is a standard rate turn?
3degrees/s (2min)
What are the 2 types of turn indicators?
Turn Coordinator Turn and Slip
What type of gyros are installed in turn coordinators?
Rate gyros
What is another name for the slip and skid ball?
Inclinometer
What are the 2 forces that the inclinometer measures?
Centrifugal force and gravity
What does the turn indicator portion of instrument depends on what?
Precession of the gyro
When the rate of turn is too great for the angle of bank and the excessive centrifugal force causes the ball to do what?
Ball moves outside of turn (SKIDDING)
A turn and slip indicator can only sense what?
Rotation about the vertical (yaw) axis only
What is the advantage of a Turn Coordinator and how does it do that?
Measures roll and yaw due to gyro(gimbals) being canted 30degrees
Directional gyro has its axis in what plane?
Horizontal
This instrument is used to provide a stabilized heading indication with reference to magnetic north
Directional gyro (Heading Indicator)
Are directional gyro north seeking?
No, must be manually set by referring to magnetic compass, cage first (pull)
What must you do to a directional gyro prior to using?
Initial alignment
How often do Heading indicators need to be realigned?
every 15min
What system provides automatic presentation of accurate magnetic headings and eliminates the need to manually transfer heading info?
Slaved compass system
Where are flux valves and magnetometers located?
Wing or tail (far away from engine)
What are the two magnetic sensing devices?
Flux valve and Magnetometer
What is the advantage of a magnetometer compared to a flux valve?
Can sense horizontal and vertical components of the Earths magnetic field
What does the ADI measure?
Pitch and roll
The ADI gives an _________ indication of even the smallest changes in altitude
Instant
How do you level the ADI?
Cage it first and torqueing motors
How must you handle the gyro?
Handle like eggs and wait 20min after powering down
What are some advantages of EFIS?
Less maintenance = no moving parts Less weight = data bus system Less expensive = same video displays Reduce pilot workload = show relevant info
What are the 2 functions of EIS
EFIS and EICAS
This display format includes: nav maps, weather radar, TCAS traffic and aircraft maintenance data
MFD
This display format includes: critical engine and system status data recording and display as needed
EICAS
What are the colours on EICAS and what do they mean?
red = warning yellow/amber= caution blue/white= advisories
What are synoptic pages?
Graphical depictions of aircraft systems
What will an integrated standby instrument display?
ADI and HSI in case of full EFIS failure
What instrument is this?
Turn and Slip Indicator
What instrument is this?
Turn Coordinator
What instrument is this?
Directional gyro/Heading Indicator
What instrument is this?
ADI
This display is an example of what?
PFD
What type of display is shown?
MFD
