Q1. The maximum speed at which a plane can use its breaks is mostly related to:
A. The drag of the wheels due to the wind
B. The capability of the break system to dissipate energy
C. The viscosity of the hydraulic system
D. The inerce created by a fast deceleration
Q2. The mechanical drum brakes works by: (Choose the most correct answer)
A. Compression
B. Expansion
C. Compression and it needs to disipate the energy generated
D. Expansion but it’s a system which doesn’t need to disipate any energy
Q3. Break system must be designed for 1.5 the normal braking distance. It means that if we know that the normal braking distance for an aircraft is 1000m:
A. It will be able to stop 0.5 the time it would need without brakes
B. It will be able to stop in 500m
C. It will be able to resist a energy dissipation of a breaking distance of 1500m
D. It will continue being useful after a breaking of 500m
Q4. The KERS:
A. Consists of an anti-locked breaking system
B. Is typical in aeronautics
C. Is located in the aileron of the F1 cars
D. Recovers energy from the braking
Q5. The explosion of the wheels due to high temperatures is avoided:
A. By using a thermal fuse
B. By using chemical substances
C. By using protections in the contact zone between the brake and the wheel
D. By strengthening the discs of the braking system
Q6. The tyre markings are normally composed by:
A. External diameter and section
B. Section and maximum tyre pressure
C. External diameter, section and maximum groundspeed
D. External diameter, section and hub diameter
Q7. Aquaplaning occurs when:
A. There is a viscous liquid in the taxiway while taxiing
B. A wedge of water builds up in front of your tires and lifts them off the runway
C. Tires lock up, the rubber begins to melt, and trapped water under the tire turns into steam
D. All previous answers are correct
Q8. Brake sizing depends on:
A. The aircraft mass but it doesn’t depend on the heat sink specific heat
B. Temperature increment during braking
C. A and B are correct
D. A and B are false
Q9. Which is a primary control according to flight actions?
A. Elevator
B. Rudder
C. Aleron
D. A,B and C more basic maneuvers.
Q10. Which movement is in relation with the aileron?
A. Roll
B. Pitch
C. Yaw
D. All are correct
Q11. Which movement is in relation with the rudder?
Q12. How many pressure in psi is used to move hydraulic controls? (standard since WWII)
A. 1500 psi
B. 2000 psi
C. 2500 psi
D. 3000 psi
Q13. Which are the principal characteristics of a fight aircraft?
A. Unstable and very maneuverable
B. Stable and very maneuverable
C. Unstable and not maneuverable
D. Stable and not maneuverable
Q14. Flight control rules:
A. Safety
B. Reliability
C. Minimum weight and cost
D. A,B and C are correct
Q15. About safety, approximately what is the statistic of failure in an aircraft design?
A. 1 failure per 10^3 million hours
B. 10 failure per 1 million hours
C. 1 failure per 10^3 billion hours
D. All are false
Q16. How is named the system which we move the control surface acting an electric engine?
A. Fly by wire
B. Power by wire
C. Mechanical by wire
D. Electrical by wire
Q1.Name the three axes of maneuver in flight actuaction:
A. Elevator, flaps, lateral
B. Pitching, rolling, yawing
C. Spoilers, direction, rudder
D. Yaw, pitch, rudder
Q2. In a cable operated control, what happens if the control is broken?
A. Aerodynamic forces tend put the control surface in an equilibrium position
B. Aerodynamic forces tend put the control surface in an non-controlable position
C. It is imposible to know.
D. None of the above
Q3. Which of the following is a characteristic of mechanical screwjack actuators:
A. Quick response
B. Slow response
C. Low aerodynamic loads
D. A and C are correct
Q4. Which of the following is not a characteristic of electrical power axis:
A. Great cost
B. No high pressure fluid needed
C. Great Maintenance
D. High power ( in relation weight/power)
Q5. If the stick force gradient is: 5.1- too high: the pilots get over tired 5.2- too low: danger for over- stressing the airframe
A) Both are correct
B) 5.2 is correct
C) 5.1 is correct
D) Both incorrect
Q6.The actuator power is provided by a _______ phase constant speed ______motor driving a variable displacement hydraulic pump that provides the hydraulic pressure to power the actuator ram.
A. two, electrical
B. three, electrical
C. three, combustion
D. four, electrical
Q7. Which of the following is not a trim technique without tabs:
A. Horn
B. Hinge axis displacement
C. Anti-tab
D. Non of the above
Q8. Which of the following is a leading edge flap:
A. Split flap
B. Flower flap
C. Plain flap
D. Kruger flap
Q9.The electric shift is traditionally employed by displacing:
A. Flaps
B. Landing gear
C. Trim
D. A and C are both correct
Q10. The direct drive is:
A. An element which allows a movement being the flexible part the electric engine rotor.
B. The backlash
C. The jamming
Q11. What is the main advantage of using fibre optic links?
A. It has no electromagnetic effect
B. It is lighter than wive
C. It is cheaper than wive
D. It doesn’t have any advantage
Q12. Some advantages of using fibre optic links?
A. Are lighter
B. Are easier to maintain
C. Are safer
Q13. Fly-by-wire actuator. First generation may operate in 3 distinct modes. Choose de false answer.
A. Full FBN mode
B. Direct Electrical Link Mode
C. Mechanical Reversion Mode
D. Crew Mode
Q14. True or false. Jamming: problems due to contacts
A. True
B. False
Q15. The flight control proccesators are found in:
A. Fly-by-wire
B. Hidraulic transmission
C. Cable and pulley transmission
Q16.Which is the main mission of an LVDT:
A. Transform a position of the hammer into an electrical signal
B. Calculate the movement of the hammer in a hydraulic way
C. Transmit the orders of the flight controls in an electric way
D. Transform an electrical signal into a movement of the pile driver
