Tech Flashcards
Mcrit
Speed at which airflow over the wing becomes sonic
Vortex Generators
Re-energise the boundary layer to delay separation
Hot start
Too much fuel, not enough air
Engine over-temps
Hung Start
Engine fails to reach self-sustaining rpm. Likely due to not enough power from starter
Will likely over-temp when power increased
Wet Start
No ignition
Inverter
Converts DC to AC
Mach Tuck
Centre of pressure moves reward due to shockwave formation.
Nose pitches down
Variable Incidence Tailplane
No drag penalty as no trim tab being held deflected
Full elevator deflection remains available
Climb at constant TAS
Mach increases
Climb at constant Mach
TAS decreases
RAIM Satellite Numbers
5 for fault detection
6 for fault detection and exclusion
Barometric aiding reduces both requirements by 1
TCAS
Traffic alert and collision avoidance system
TCAS 1: traffic alerts only
TCAS 2: traffic alerts and resolution alerts
Caution area 30-45 seconds
Warning area 25 seconds
Aquaplaning speed formula
9 x SQRT (tyre pressure)
Swept wing benefits
Higher Mcrit due delayed supersonic flow over wings (reduced acceleration of perpendicular airflow)
Lateral stability
Dangerous Goods Classes
- Explosives
- Gases
- Liquids
- Solids
- Oxidising
- Poisons/Toxic
- Radioactive
- Corrosive
- Other
Rectifier Unit
Converts AC to DC
Transformer
Steps AC to a different voltage
Machmeter errors
Instrument and Pressure
No density error
Types of Aquaplaning
Dynamic: standing water
Viscous: damp, smooth runway
Reverted Rubber: steam (locked up tyres)
EGPWS Modes
- Excessive descent rate
- Excessive terrain closure rate
- Altitude loss after take-off
- Unsafe terrain clearance (a. Gear b. Flaps c. After takeoff)
- Below glide slope
- Bank angle
- Wind shear protection
- Minimums + altitude callouts
Diode
Controls current flow in one direction
Rheostat
Controls current flow in circuit
Potentiometer
Controls voltage in circuit
Reasons for spoilers
- Limitations in aileron size
- Reduce risk of aileron reversal
- Ailerons lose effectiveness at high speeds (due reversal)
- Reduced adverse yaw
- Air brakes
- Assist lift dumping/braking on landing
