FADEC means:
Full authority digital engine control
Full authority duplex engine control
Forward authority duplex control
None of the above
Regarding gearboxes and drives, which of the following ones is not one of them?
Internal gearbox
Intermediate gearbox
Main gearbox
Radial driveshaft
Lubrication system functions, which of the following ones is not true?
Provide cooling for the bearings
Protect the lubricated components
Maintain it´s properties under extremely cold temperatures
Collect foreign matter
In the oil system, it´s basic components are:
A. Oil tank, oil pumps
B. Heat exchanger, magnetic chip detector
C. A, B and air separator
D. C but without magnetic chip detector
Regarding air starting system
It is not used in commercial aviation anymore
It is high-tech and thus very expensive
The starter motor contains a turbine
All engines use a starter motor, but they can use another starting system if the pilot in command decides so
About ignition
Low energy ignition is used for starting all jets
Hig energy ignition is used for starting all jets
Low energy ignition is used in planes with MTOW<5700 kg and high energy ignition is used in heavier planes
Low energy ignition is used in planes commercial and high energy ignition is used in fighter planes
Regarding the ice protection system, mark out the incorrect one
Must avoid air restrictions due to ice
Turbojet engines use hot air supply
There is also a electrical power system
It can never happen a combination of them because of the amount of energy required to maintain them while flying
Fire protection systems
Never use external air cooling because the oxygen in the air could rekindle the fire
Use fire resistant materials in structural elements but not on pipes
Locate the fuel pipes in cold zones separated by fireproof bulkheads
Locate the fuel pipes in hot zones and protect them with fireproof bulkhead
Q1. Choose the correct answer:
A. Aviation fuels are obtain by fractional distillation of crude oil
B. Aviation fuels are obtain by solidification of crude oil
C. Aviation gasoline and kerosene are light distillates
D. A and C are correct
Q2. Detonation can be caused by:
A. An incorrect mixture strength
B. An incorrect fuel grade
C. A combination of high pressure and temperature
D. All are correct
Q3. Aviation Gasoline can be classified in:
A. Grade 80 (red)
B. Grade 90 (green)
C. Grade 100 ZZ (blue)
D. A and B are correct
Q4. Related to rich mixtures, choose the incorrect answer:
A. From 18:1 to 15:1
B. Leads to an incomplete combustion due to the fuel excess
C. Used for high power or low power (idle) settings
D. Fuel excess acts as a coolant
Q5. Related to lean mixtures, choose the correct answer:
Q6. Related to the mixture ratio, chemically correct or Stoichiometric ratio is:
14:1
15:1
16:1
17:1
Q7. The main properties of gas turbine fuels are:
A. Thermal instability, low freezing point, low sulfur content
B. Thermal stability, high freezing point, low sulfur content
C. Thermal stability, low freezing point, high sulfur content
D. Thermal stability, low freezing point, low sulfur content
Q8. The most used gas turbine fuel is:
A. A1
B. A
C. B
D. JP-4
Q1. Components of the oil system:
A. Magnetic chip detector A,D,B,A,B,D,B,C
B. Squeeze film bearing
C. Air separator
D. All above and filters and strainers
Q2. Types of ignition units:
A. DC (Low voltage system)
B. Transistorized
C. AC (High voltage system)
D. All above are correct
Q3. Igniter plugs:
A. Air gap type
B. Surface discharge
C. Both are right
D. All are wrong
Q4. How can we detect the particles in the lubrication system?
A. With a magnetic chip detector
B. By gravity
C. With pumps
D. None of the above
Q5. Which are the factors to select an engine for a combat aircraft:
A. Flight speed, agility, flight envelope, STOL, VTOL,...
B. Number of air intakes, flight envelope, agility
C. Wing and tail type, agility, flight speed
D. B and C are correct
Q6. A way of avoiding contrail concentration is:
A. Improve the general efficency of the engine
B. Desingn new alternativa routs
C. None of the above
D. Both options
Q7. The highest concentration of CO2 due to aircraft is located:
A. Near the equator at 2000ft
B. Between Paralels 30 and 60 (N) in the tropopause
C. Between Paralels 30 and 60 (S) in the tropopause
D. Over Australia
Q8. Emissions because of aircraft and its engines contribute
A. 2-3% of the CO2 global production
B. 10% of the global production
C. Less than 0,1%
D. Emissions in aircraft are only N2 and H2O
Q9. Lobe type nozzles are designed to:
A. Improve the asthetics of the engine
B. Reduce the noise level
C. Control the flow of air to increase the thrust
D. The main objective is to avoid possible strike damages
Q10. Acoustic Absorbent sheets in engines:
A. convert noise into heat
B. greatly improve the weight
C. are porous skins
D. A and C
Q11. Throughout history the noise level has:
increased
decreased
remained equal
it has never been a priority
Q12. Choose the correct option:
If combat regime is used for long times pc is lighter option (interdiction) but if combat regime si used for short times no pc is the best option (future)
If combat regime si used for short or long times pc is lighter option always.
If combat regime is used for short times pc is lighter option (interdiction) but if combat regime si used for long times no pc is the best option (future)
None of them is correct
