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Question 1

1. Why is trajectory reconstruction important?
   A. For ticket pricing
   B. To analyze luggage handling
   C. As a tool for investigation and simulation
   D. To adjust flight schedules

Answer 1

→ C. As a tool for investigation and simulation

Question 2

2. What is one reason to reconstruct an aircraft’s trajectory?
   A. Improve aircraft sales
   B. Measure fuel economy
   C. Visualize the sequence of events
   D. Increase airport capacity

Answer 2

→ C. Visualize the sequence of events

Question 3

3. Which of the following is not a method of trajectory reconstruction?
   A. GNSS
   B. Radar
   C. Heat maps
   D. Dead reckoning

Answer 3

→ C. Heat maps

Question 4

4. What type of data does the GNSS method use?
   A. Wind direction
   B. Satellite navigation
   C. Tire pressure
   D. Magnetic fields

Answer 4

→ B. Satellite navigation

Question 5

5. What is the primary disadvantage of pure inertial navigation systems (INS)?
   A. Poor precision
   B. Poor accuracy
   C. Requires sunlight
   D. Interference with radar

Answer 5

→ B. Poor accuracy

Question 6

6. What is an advantage of INS?
   A. Low cost
   B. No power needed
   C. Good precision
   D. GPS independent accuracy

Answer 6

→ C. Good precision

Question 7

7. What improves the accuracy of INS in trajectory reconstruction?
   A. Solar panels
   B. High tire pressure
   C. Kalman filter with Differential GPS
   D. Magnetic interference

Answer 7

→ C. Kalman filter with Differential GPS

Question 8

8. What is a characteristic of Differential GPS (DGPS)?
   A. Poor resolution
   B. Uses manual input
   C. Good precision and accuracy
   D. Requires wind sensors

Answer 8

→ C. Good precision and accuracy

Question 9

9. Which method fuses INS and DGPS data?
   A. Dead reckoning
   B. Blended radar
   C. INS Aided Differential GPS
   D. Pressure calibration

Answer 9

→ C. INS Aided Differential GPS

Question 10

10. What input is NOT used in dead reckoning?
    A. Wind direction
    B. Magnetic heading
    C. Pressure altitude
    D. Satellite imagery

Answer 10

→ D. Satellite imagery

Question 11

11. What data is used in pure inertial methods?
    A. Magnetic heading and altitude
    B. Radar azimuths
    C. x, y, z body-axis acceleration
    D. External visual cues

Answer 11

→ C. x, y, z body-axis acceleration

Question 12

12. What mathematical tool is used to describe motion in trajectory analysis?
    A. Venn diagram
    B. Euler rotation matrix
    C. Pythagorean theorem
    D. Boolean algebra

Answer 12

→ B. Euler rotation matrix

Question 13

13. What is one factor that influences braking performance?
    A. Airspeed only
    B. Engine temperature
    C. Surface texture
    D. Number of passengers

Answer 13

→ C. Surface texture

Question 14

14. What braking concept provides optimal performance?
    A. Manual override
    B. Full brake lock
    C. Optimal slip
    D. Hydraulic drain

Answer 14

→ C. Optimal slip

Question 15

15. What is the function of an anti-skid system in aircraft braking?
    A. Increase engine thrust
    B. Apply emergency lights
    C. Prevent wheel lockup
    D. Reduce cabin pressure

Answer 15

→ C. Prevent wheel lockup