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Questions and Answers
How are the prohibited areas ordered with increasing rpm ?
How are the prohibited areas ordered with increasing rpm ?
What is used in a heat exchanger to heat the fuel ?
What is used in a heat exchanger to heat the fuel ?
The ... in a fuel metering system ensures that the pressure does not rise too far when the shut-off valve closes.
The ... in a fuel metering system ensures that the pressure does not rise too far when the shut-off valve closes.
The cooling of the (1) ... of the (2) ... of the turbine is NOT controlled by FADEC ?
The cooling of the (1) ... of the (2) ... of the turbine is NOT controlled by FADEC ?
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What signal does FADEC use to keep the rpm on Flight Idle, so that a restart is possible?
What signal does FADEC use to keep the rpm on Flight Idle, so that a restart is possible?
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Which one(s) of Newtons Laws do we need to explain propulsion of an aircraft ?
Which one(s) of Newtons Laws do we need to explain propulsion of an aircraft ?
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During a cycle of a reciprocating engine a piston makes 4 strokes: 2 times up and 2 times down. During how many of these strokes is the piston driving the shaft ? (And NOT the shaft driving the piston.)
During a cycle of a reciprocating engine a piston makes 4 strokes: 2 times up and 2 times down. During how many of these strokes is the piston driving the shaft ? (And NOT the shaft driving the piston.)
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In an ideal gas molecules:
In an ideal gas molecules:
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In a reciprocating engine the gas is compressed during an ... process.
In a reciprocating engine the gas is compressed during an ... process.
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In the inlet of a turbofan the temperature of the airflow (1) ... and the total temperature (2) ....
In the inlet of a turbofan the temperature of the airflow (1) ... and the total temperature (2) ....
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The largest fuel / air ratio is needed in a combustion chamber with a (1) ... inlettemperature and a (2) ... temperature increase:
The largest fuel / air ratio is needed in a combustion chamber with a (1) ... inlettemperature and a (2) ... temperature increase:
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If the TAS increases the specific thrust will:
If the TAS increases the specific thrust will:
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What parameter is used as an indication for the thrust?
What parameter is used as an indication for the thrust?
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In a rotor there is a change of total temperature. This is because of the ... of a rotor.
In a rotor there is a change of total temperature. This is because of the ... of a rotor.
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We talk about surge when ... occurs.
We talk about surge when ... occurs.
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In the stator of a 50%-reaction turbine (1) ... is converted to (2) ...
In the stator of a 50%-reaction turbine (1) ... is converted to (2) ...
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Due to the torque (caused by the centrifugal force) on a turbine blade a compressive stress occurs at:
Due to the torque (caused by the centrifugal force) on a turbine blade a compressive stress occurs at:
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A surplus of air is fed to the combustion chamber. What is NOT a function of this surplus of air?
A surplus of air is fed to the combustion chamber. What is NOT a function of this surplus of air?
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What type of combustion chamber is the LEAST suitable for connection to a centrifugal compressor ?
What type of combustion chamber is the LEAST suitable for connection to a centrifugal compressor ?
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I The starting engine of a twin-spool turbofan is connected to the N2-shaft
II The starting engine drives the gas turbine by delivering air under pressure to the gas turbine
I The starting engine of a twin-spool turbofan is connected to the N2-shaft II The starting engine drives the gas turbine by delivering air under pressure to the gas turbine
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At what point does does light-up (the actual burning of the fuel) start ?
At what point does does light-up (the actual burning of the fuel) start ?
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One of the prohibited areas in the fuel metering graph is labeled as 'Stall Area'. In this area the fuel-air ratio increases too much. The result of this is that the:
One of the prohibited areas in the fuel metering graph is labeled as 'Stall Area'. In this area the fuel-air ratio increases too much. The result of this is that the:
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The heat exchanger in a fuel system (1) ... oil and (2) ... fuel.
The heat exchanger in a fuel system (1) ... oil and (2) ... fuel.
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See Appendix I. If the CDP increases the piston slides to the (1) ... and the fuel flow (2) ...
See Appendix I. If the CDP increases the piston slides to the (1) ... and the fuel flow (2) ...
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Which component disappears when going from MEC to FADEC? The:
Which component disappears when going from MEC to FADEC? The:
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During a cycle of a reciprocating engine a piston makes 4 strokes: 2 times up and 2 times down. During how many of these strokes is the SHAFT driving the PISTON ? (And NOT the piston driving the shaft.)
During a cycle of a reciprocating engine a piston makes 4 strokes: 2 times up and 2 times down. During how many of these strokes is the SHAFT driving the PISTON ? (And NOT the piston driving the shaft.)
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In a cylinder we have a gas under a free movable piston. On the piston is a mass of 5 kg. At some point I remove the mass off the piston so that the piston moves up VERY slowly. Now:
In a cylinder we have a gas under a free movable piston. On the piston is a mass of 5 kg. At some point I remove the mass off the piston so that the piston moves up VERY slowly. Now:
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In …-engine ignition does NOT take place.
In …-engine ignition does NOT take place.
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The main advantages of a jet engine over a reciprocating engine are related to the:
The main advantages of a jet engine over a reciprocating engine are related to the:
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The total enthalpy of 1 kg of air increases. What increases also for sure ?
The total enthalpy of 1 kg of air increases. What increases also for sure ?
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The specific thrust is the amount of Newton … .
The specific thrust is the amount of Newton … .
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. In the rotor of a compressor
I. the relative velocity of the air increases
II. the direction of the whirl velocity is reversed
. In the rotor of a compressor I. the relative velocity of the air increases II. the direction of the whirl velocity is reversed
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At what point of the compressor characteristic the compressor is stalling ?
At what point of the compressor characteristic the compressor is stalling ?
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To determine the pressure difference you use the change of the (1) ... velocity in the diffuser, and the change of the (2) ... velocity in the impeller.
To determine the pressure difference you use the change of the (1) ... velocity in the diffuser, and the change of the (2) ... velocity in the impeller.
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In what area of the relight envelope is a restart only possible when using the starting engine?
In what area of the relight envelope is a restart only possible when using the starting engine?
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To the combustion chamber much more air is fed than needed for stoichiometric combustion. What is NOT a function of this surplus of air?
To the combustion chamber much more air is fed than needed for stoichiometric combustion. What is NOT a function of this surplus of air?
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What is the last parameter to increase at the startup of the engine?
What is the last parameter to increase at the startup of the engine?
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Along what line(s) can the engine accelerate from X to Y ?
Line C represents the equilibrium line.
Along what line(s) can the engine accelerate from X to Y ? Line C represents the equilibrium line.
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With increasing OAT N2 … (1) because the turbine ... (2) at a higher temperature.
With increasing OAT N2 … (1) because the turbine ... (2) at a higher temperature.
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What component causes the fuelflow being only dependent on the size of the opening below the piston, and not on the pressure difference over the piston?
What component causes the fuelflow being only dependent on the size of the opening below the piston, and not on the pressure difference over the piston?
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What signal is not used by a MEC?
What signal is not used by a MEC?
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