Pneumatics systems are used for:
Environmental control / Air conditioning / Cargo compartment heating
Ice protection
Water tank pressurization and toilet waste
All of the above are correct
Related to the air bleed system
There must exist an engine bleed air control system to obtain the required pressurized air at any moment
There must not exist an engine bleed air control system to obtain the required pressurized air at any moment
It is recommended to have an engine bleed air control system to obtain the required pressurized air at any moment
None of the above are correct
How many types of engine bleed systems exist?
Four: Intermediate and High pressure mixed system, Low and High pressure mixed system, High pressure system, Extremely Low pressure system.
Four: Intermediate and High pressure mixed system, Low and High pressure mixed system, High pressure system, Three flow mixed system.
Three: Intermediate and High pressure mixed system, High pressure system, Three flow mixed system.
Three: Intermediate and High pressure mixed system, Low and High pressure mixed system, Extremely High pressure system.
High Pressure system is normally used in:
Helicopters
Commercial aviation
Fighter aircrafts
Gliders
Three flow mixed system is normally used in:
Related to Pneumatics security:
Compressor bleedings must have limitation valves
Bleeding P and T must be the lowest compatible with the system
A and B are correct
A and B are incorrect
The buckling is a phenomenon that appear in (i) structures subjected to (ii) loads
A shutoff valve in each bleeding line must be installed (fire protection)
Bleeding shutoff valve must NOT be close to the engine
Related to Pneumatic power systems:
A. Pneumatic power systems are similar to hydraulic power systems but there is no return line.
B. Pneumatic power systems are very common
C. Pneumatic power systems are not common
D. A and C are correct
What was the problem with the “Harrier I” pneumatic vertical control system?
It didn’t have enough power to take off
It was too heavy to take off without horizontal speed
It was impossible to completely decelerate the horizontal speed for landing
The system was completely manual and required outstanding pilot skills
What year the first flight with artificial oxygen was?
1902
1945
1913
1964
What was the problem with the pressurization cabin in the “Comet I”?
Its cabin did not pressurize
It was really cold above 6500 m
It was really hot below 6500 m
The pressure inside the cabin was the surface pressure during all the flight
One of the advantages of using exhaust gases for the conditioning system is…
It’s easiness
It has high thermal efficiency
You get more engine power
You don´t need a heat exchanger
. At the beginning, the scientists wanted to have
1 bar of pressure during all the flight
1 bar of pressure just for take-off
1 bar or pressure just for landing
Different pressure values throughout the flight
. Electronic components’ working range is:
From -40ºC to 90ºC
From 0º C to 90ºC
From 40ºC to 90ºC
From 25ºC to 50ºC
The combustion heater:
Is perfect for aviation
Is a cooling system
Has a fuel consumption of 5 US gal/h
Is dangerous for aviation
Maintaining 1 bar of pressure during a flight
A. Presented the problem of explosive decompression
B. Presented the problem of fatigue as a result of loads cycles (pressures)
C. Presented the problem of fatigue in the crew
D. A and B are true
Related with the lubricant oil, fuel in an aircraft…
It heats up the lubricant oil.
Has the same temperature than the lubricant fluid.
It helps to cool the lubricant oil.
Is not related with the lubricant fluid because they are not combined.
Normally the fuel system in an aircraft is made to…
Be able to supply at least 75% of the fuel flow required under each intended operation condition or maneouvre.
Have only one fuel system able to provides fuel to all the engines.
Be able to supply at least 100% of the fuel flow required under each intended operation condition or maneouvre.
Be fitted with a main pump that boost the fuel through the system.
A disadvantage of the rigid tanks is…
That it has t be protected with isolating material.
That the material can be damaged by the use.
That the volume of the tank normally is not enough.
That it needs extra structures that means more weight.
How works the flame arrestors (parallamas).How works the flame arrestors (parallamas).
Reduce the velocity of propagation ending the combustion.
Present a metallic barrier that cool the air and reduce the ignition.
The vapors run away to the atmosphere and the combustion can´t be produced.
It can´t slow the propagation.
What is the false answer. The fuel tank is pressurized to:
Prevent evaporation at high altitude.
Prevent vapor locks.
Prevent negative differential pressure.
Reduce the propagation of the combustion.
What of the next answers is not an operating mode of fuel system
Pressurization.
Refuel / Defuel.
Fuel Jettison.
Fuel distribution.
What type of sensor use the difference in the dielectric properties of air and fuel.
Ultrasonic sensors
Capacitance sensors
Optical level sensors
Float level sensors
Related with the pumps that a fuel system could have there are:
Fuel transfer pumps.
Fuel booster pumps and fuel transfer pumps.
Fuel booster pumps, fuel transfer pumps and engine feed pumps.
Fuel multioperation pumps.
Q1. It is not a characteristic of the heat pipe
High reliability
Mobile parts
Transfers heat
Uses different liquids
Q2. What statement is true about air distribution
Does not look for a comfortable environment
Pipes ensure an heterogeneous distribution
In fighters the air flow is higher and the temperature lower
None of the above
Q3. About the cabin noise
The priority is to minimize the layers in the cabin
A reduction of noise is the main objective
The noise is not a distraction for the pilot
We cannot Cancel the noise through headphones
Q4. About cabin pressure
The maximum safe altitude for pilots without O2 is 25000ft
Regulation for passengers is 8000ft
It uses the high altitude pressurization system, located in the nose
Q5. The pneumatic pressure control system has
Discharge valve
Cabin pressure controller
Altittude capsule
All of them
Q6. Levels of decompressiom
Explosive
Slow
Rare
Spectacular
Q7. Solid oxygen candles
Once started they cannot be stopped
They continue the combustion even underwater
They work by demand
Q8. The physical states of the oxygen for transportation are (select the INCORRECT):
Liquid
Gaseous
Solid
Chemical
NO hay incorrecta (la pregunta esta mal)
