Chapter 2.2 - PPL Aircraft General Knowledge Flashcards
Name three factors affecting Engine Performance?
- Mixture Strength.
- Height.
- Temperature.
What is the name of the device which measures Fuel and Air in an Engine?
Carburettor.
What is the name of the device which measures the airflow in a Carburettor?
Venturi.
What is the ratio for Chemically Correct Mixture?
1:15.
The Fuel/Air ratio corresponding to maximum EGT and minimum Fuel Consumption is called what?
Best Economy Mixture.
What is the Mixture Ratio for Best Power?
1:12.5 to 1:13.5.
What is the Mixture Ratio for Best Economy?
1:15 to 1:16.5.
True or False. The Mixture Control should be set at FULL RICH before any power settings are made?
True.
Name two reasons why the output of an Engine decreases during a climb?
- Atmospheric Pressure reduces the air to the Cylinders.
- Density of the air feeding the Engine.
During a climb, how can the reduction of Atmospheric Pressure be compensated?
Progressively opening the Throttle.
During a climb, how can the reduction of Density be compensated?
Increasing RPM.
Which three primary Flight Instruments rely on Air Pressure?
- Airspeed Indicator.
- Vertical Speed Indicator.
- Altimeter.
Which three primary Flight Instruments rely on Gyroscopic Pressure?
- Artificial Horizon.
- Heading Indicator.
- Turn Coordinator.
What is Static Pressure?
The undisturbed pressure of atmosphere around the Aircraft.
What is Dynamic Pressure?
The extra pressure generated by the air movement.
What is Total Pressure?
The sum of Dynamic and Static Pressure.
Static Vent Blockage: What happens to ASI in a climb?
ASI will under-read (lower IAS than actual).
Static Vent Blockage: What happens to ASI in a descent?
ASI will over-read (higher IAS than actual).
Static Vent Blockage: What happens to Altimeter?
It will read a constant height at which the blockage occurred.
Static Vent Blockage: What happens to Altimeter in a climb?
Altimeter will under-read.
Static Vent Blockage: What happens to Altimeter in a descent?
Altimeter will over-read.
Static Vent Blockage: What happens to VSI?
It will read zero.
True or False. A Pitot Tube blockage only affects the Airspeed Indicator?
True.
Pitot Tube Blockage: What happens to ASI during Takeoff?
ASI will read zero.
Pitot Tube Blockage: What happens to ASI during Straight and Level Flight?
ASI will remain constant.
Pitot Tube Blockage: What happens to ASI during a climb?
ASI will indicate a higher IAS.
Pitot Tube Blockage: What happens to ASI during a descent?
ASI will indicate a lower IAS.
The Altimeter will over-read when flying into what kind of pressure/temperature area?
Low.
What does the Red Line on an ASI indicate?
Never Exceed Speed.
What does the Green Arc on an ASI indicate?
Normal Operating Speed Range.
What does the Yellow Arc on an ASI indicate?
Caution Range.
What does the White Arc on an ASI indicate?
Flaps Extension Range.
True or False. IAS and TAS are equal at sea level?
True.
True or False. IAS and TAS are equal at Altitude?
False. IAS is less than TAS due to decrease in density.
What does EAS stand for?
Equivalent Airspeed.
