Module 5-6-7-8 Flashcards
What are the 3 axis of aircraft?
Longitudinal (Roll)
Lateral (Pitch)
Vertical (Yaw)
What is the standard T formation for instruments in the cockpit? (left to right, top to bottom)
Top left: Airspeed indicator Top Centre: Artificial horizon Top right: Altimeter Bottom left: Turn coordinator Bottom centre: Directional gyro Bottom right: Vertical speed indicator
Which instruments are gyro instruments?
Top centre: Artificial Horizon
Bottom Centre: Directional Gyro
Bottom left: Turn coordinator
Which instruments are pressure instruments?
Top left: Airspeed indicator - (Pitot / Static only)
Top right: Altimeter (Pitot / static only)
Bottom Right: Vertical speed indicator (Pitot AND Static together)
List 2 faults as to why a heading flag would drop into view
- The gyro failed
2. The slaving Amp failed to send the signal to the Directional gyro
What effect will gyroscopic precession have on a heading indicator?
The effect will cause the gyro to tilt or rotate 90 degrees ahead of the direction of rotation of the rotor
Describe the testing procedure for a slaved compass system
- Power on the aircraft with AC and DC
- After about 3 minutes (180 seconds), flag should pull
- Slave compass and let it find its heading
- Un slave it, slew compass card 15 degrees in one direction
- Re slave it, it should return to its original heading
- Unslave it, slew compass card 15 degrees the other direction
- Re slave it, it should return to its original heading again
Explain the 25% rule for gyros
Do not move the gyro or aircraft at 25% spool up or last 25% of spool down as this could damage the gyro
List 3 transportation cautions with gyros
Handle like eggs
Keep in its original box
Use a foam pad for shelf storage
The slaved compass system combines 2 things into one instrument. What are they?
Magnetic compass indicator
Directional gyro
