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EN Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
Questions Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL
Turbine blade stages may be classed as either 'impulse' or 'reaction'. In an impulse blade section:
The disadvantages of axial flow compressors compared to centrifugal flow compressors are 1 - expensive to manufacture 2 - limited airflow 3 - greater vulnerability to foreign object damage 4 - limited compression ratio The combination of correct answers is:
Using compressor bleed air to power systems:
In a fuel system, the oil to fuel heat exchanger allows:
The purpose of the barometric correction in a fuel controller is to:
The engine pressure ratio (EPR) is the ratio of:
Consider a jet engine whose control is based on the Engine Pressure Ratio (EPR): 1. With a constant EPR, the thrust decreases when the altitude increases; 2. With a constant EPR, the thrust is independent of the Mach number; 3. At same environmental conditions, a given EPR setting maintains the thrust irrespective of engine wear due to ageing; 4. The EPR is determined by the impact pressure difference between the turbine outlet and the compressor inlet; 5. On take-off, in the event of icing not detected by the crew, the indicated EPR is lower than the real EPR. The combination regrouping all the correct statements is:
The fuel temperature, at which, under standard conditions, the vapour ignites in contact with a flame and extinguishes immediately, is the:
An engine pressure ratio (EPR) gauge reading normally shows the ratio of:
The reason for having a low pressure fuel-cooled oil cooler in a recirculatory type oil system is to:
