AGK Flashcards
CS25 Major Failure
Aircraft: Significant Reduction
Occupants: Physical Distress, possibly including injuries.
Crew: Discomfort, a significant increase in workload
Remote Probability
CS25 Minor Failure
Occupants: Physical discomfort
Aircraft: Slight reduction in functional capabilities/safety margins.
Crew: Slight increase in workload
Probable.
CS25 Hazardous
Occupants: Serious/fatal injuries to a small number of PAX or Crew.
Aircraft: Large reduction in functional capabilities/safety margins.
Crew: Excessive workload
Extremely Remote
CS25 Catastrophic
Multiple fatalities
Hull loss
Fatality or incapacitation
Extremely improbable.
CS25 Max cabin altitude?
8000ft
Oxygen masks should be presented to passengers at what max cabin altitude?
15,000ft
Auto-brake activated?
Main gear wheels spin-up
Freezing point of Jet-A1?
-47 Degrees C
Freezing point of Jet-A?
-40 Degrees C
Freezing point of Jet-B?
-60 Degrees C
Mixture Ratio on Piston Engine?
MASS of Air / Fuel entering the cylinder
Smoke Hood vs Smoke Mask oxygen delivery
HOOD - Continous Oxygen Flow
MASK - Oxygen on Demand
Flashpoint of Jet-A/Jet-A1?
38 Degrees C
Remember A-to-B (Jet-A/A1 to Jet-B - highest to lower)
Flashpoint of Jet-B?
-23 Degrees C
Artificial Feel functions in _________ with an irreversable hydraulic actuator
Parallel
Electric window heating mats are usually powered by?
3-Phase AC
Fuel mixture of 9:1 is ____.
Rich (Air:Fuel)
Ideal is 15:1
SFC is ratio of?
Ratio of fuel mass consumed per unit of thrust/output
Could be shaft horsepower in Turboprop or Thrust otherwise
Primary flight controls are?
Elevator, Aileron, Rudder, Spoilers
Wheel Shimmy Oscillation
Lateral (Side-to-Side) Oscillation along Longitudinal Axis
FADEC Fault Tolerance?
Single Fault Tolerant
Purpose of Accumulator in Hydraulic Braking System?
To provide an emergency reserve
Frequency from RPM and Pole Pairs equation?
F(Hz) = (RPM/60) * Pole Pairs
Impulse Turbine - Pressure / Velocity across Nozzle Guide Vane (NGV)?
Pressure drops - Velocity increases (needed to optimise impulse reaction with Impulse blade
Impulse Turbine - Pressure / Velocity across Blade
Reduce velocity no reduction in pressure
Purpose of Oil in Oleo Pneumatic Strut?
Dampening and Recoil
Oil is Damp!
Low pressure fuel pump in transport aircraft is typical a __________ pump.
Centrifugal pump (AC 115v)
Fire discharge bottles per engine bay?
2
APU requirements for ETOPS?
Must be able to restarted at all altitudes during flight.
Best application of braking for Steel brake discs?
Frequent small applications (allows disc to cool). Opposite to Carbon
Detonation in Piston Engine caused by?
Anything that increases pressure or temperature of mixture
Purpose of Pressurising and Dump Valve in Gas Turbine Fuel System?
Return low pressure fuel to return, and pass high pressure fuel to burners (ensures high enough fuel pressure for atomisation)
Centrifugal Compressor Compression Ratio (per stage)
5:1
Impulse Reaction Turbine - Duct on Rotor?
Slightly convergent
Fuel Flow is measured at what location in the fuel system?
After the HP Valve (last point before engine)
Settings on Flight Dect Oxygen System
Normal, Emergency, Test, and 100% Oxygen
Constant Displacement or Axial Piston Pump requires an _________ and a __________.
Accumulator and Automatic Cut Out Valve (ACOV). The Constant Displacement Pump stroke is based on angle of piston body
Purpose of Blocking Valve during Engine Start on Variable Volume/Constant Pressure Pump?
To reduce load on starter - sets pump to zero output during engine start
Impact on Bleed Air (Charge Air) across Air Conditioning Pack (Bootstrap System)
Pressure drop and Temperature drop
S.G. of Discharged Lead Acid Battery
1.17
What is used to pressurise the Hydraulic Reservoir?
Engine Bleed Air
Constant Speed Prop maintains a constant….
Angle of Attack
Multi-Engine Variable Pitch Prop - Position if Oil Pressure Drops
Coarse (by spring on single acting actuator)
Fuel Booster Pump PSI?
LP Pump - 20-100PSI
Where is exhaust gas measured on gas turbine?
Output of HP Turbine
Start disconnection on gas turbine?
Centrifugal disconnect on N2
Which spool is N2?
HP Spool
Temperature Limited (instead of Thrust Limited) When
High OAT
Actual Thrust Limits on Gas Turbine Engines
Max Take-Off (Time Limited)
Max Continuous
Go-Around
Max Climb
Inlet valve on Piston engine during compression stroke?
Open at first (BDC)