Block 3 Flashcards
What are the Four Cycles of an Engine?
Intake, Compression, Combustion, Exhaust
Wet Sump vs. Dry Sump
What does the Piper Archer Have?
-Wet Sump- Gravity fed, stored in oil pan
-Dry Sump- Pump fed, stored in external reservoir
- Archer has a Wet Sump
What are Magnetos and How many does the Archer have?
-Generates electricity for spark plugs (distributes at prop line)
- 2 Magnetos
What are Spark Plugs and How Many Does the Archer Have?
-Ignite the Air/ Fuel Mixture Inside an Engine
- Archer Has 8 (4 Per magneto)
Why and When Would You Lean Mixture?
-Why: Fuel Ratio Must Remain at 14:7:1 Ratio
-When: Operating at Altitudes higher than 3,000 msl
What Does the Fuel Injection System Do?
Advantages and Disadvantages
-Spray fuel directly into intake manifold at cylinders
- Advan.: Better Cold starts, Improved performance, More efficient fuel dis.
-Disadvan.: Vapor locks, plugged injectors
What is Vapor Lock?
Difficulty Starting the engine when hot
What is Carburetor Ice? Solution?
- When Air passes through the carburetor (Bernoulli Priciple) and the air naturally freezes to the sides.
- Solution: Carburetor Heat
Signs of Carburetor Icing (3)
- Reduction in RPM
- Engine Roughness
- Fuel Starvation
Purpose of Oil (5) LCCSA
- Lubrication
- Cooling
- Cleaning
- Sealing
- Actuating
What Kind of Engine Does the Piper Archer Have?
What does IO-360 stand for?
- Lycoming 4-cylinder IO-360
- Fuel injected Air cooled
What are the Different Types of Props? (4) (FACC)
- Fixed Pitch (UND climb & cruise combo)
- Adjustable: changed on the ground
- Controllable: changed in flight
- Constant Speed: changes based on RPM
What is Blade Twist?
Compensates for the outer part of the blade travels a greater distance than the inside does.
Fuel Colors and Grade
- Red- 80
- Green- 100/130
- Blue- 100LL
- Clear- Jet Fuel
What does the Fuel Selector Do?
Allows to change fuel tanks for operation uses.
What is Pre-Ignition? Caused by?
- Ignition caused in advance of normal power stroke
- hot spots, overheated spark plugs, high power excessive lean mixture.
What is Detonation?
- Occurs when the fuel/air mixture explodes in cylinder
What Should You Do When You Have a High Temp. Engine? (3)
- Level Off
- Reduce Power
- Reduce Mixture
Purpose of Battery? Volts Required?
- Provides power to start aircraft
- Backup power
- 24 Volts
Purpose of Alternator? Volts & amp?
- Mechanical action that creates charge during flight
- 28 Volts 70 amps
What does Ammeter Do?
Shows battery rate of charge
What does the Loadmeter do?
Indicates total electrical load on system at any given time
How much fuel can be stored in the Piper archer?
- 50 Gallons, 48 usable, 2 unusable
What are The Dangers of Using Heating Systems (2)
- Carbon Monoxide
- Fire
