Attitude control and navigation systems MCQs – Aerospace

1. What is the primary function of an attitude control system in spacecraft?
(A) To control the spacecraft’s orientation
(B) To regulate the spacecraft’s speed
(C) To manage the spacecraft’s altitude
(D) To monitor the spacecraft’s fuel levels

2. Which device is commonly used to measure the angular velocity of a spacecraft?
(A) Gyroscope
(B) Accelerometer
(C) Magnetometer
(D) Altimeter

3. What type of sensor provides measurements of the spacecraft’s orientation relative to the stars?
(A) Star Tracker
(B) GPS Receiver
(C) Inertial Measurement Unit (IMU)
(D) Sun Sensor

4. Which control method uses small thrusters to adjust the attitude of a spacecraft?
(A) Reaction Control System
(B) Magnetic Torquers
(C) Gyroscopic Stabilization
(D) Centrifugal Force

5. What is the role of an Inertial Measurement Unit (IMU) in spacecraft navigation?
(A) To provide measurements of acceleration and angular velocity
(B) To measure the spacecraft’s distance from Earth
(C) To determine the spacecraft’s orientation relative to celestial bodies
(D) To calculate the spacecraft’s speed

6. Which navigation system uses signals from multiple satellites to determine a spacecraft’s position?
(A) Global Positioning System (GPS)
(B) Star Tracker
(C) Inertial Navigation System
(D) Ground-Based Radar

7. What is the purpose of attitude determination systems in spacecraft?
(A) To determine the spacecraft’s orientation in space
(B) To control the spacecraft’s propulsion system
(C) To measure the spacecraft’s distance from Earth
(D) To regulate the spacecraft’s temperature

8. Which device provides orientation information based on the Earth’s magnetic field?
(A) Magnetometer
(B) Sun Sensor
(C) Star Tracker
(D) Gyroscope

9. What is the primary advantage of using reaction wheels in spacecraft attitude control?
(A) High precision and no need for external propellants
(B) Low cost and simplicity
(C) High power consumption
(D) Quick response time

10. Which sensor is used to detect the direction of the Sun relative to the spacecraft?
(A) Sun Sensor
(B) Star Tracker
(C) GPS Receiver
(D) Magnetometer

11. What is the main function of a control moment gyroscope (CMG) in spacecraft?
(A) To control and adjust spacecraft attitude using angular momentum
(B) To measure the spacecraft’s velocity
(C) To provide altitude information
(D) To track celestial bodies

12. Which method uses magnetic fields to control spacecraft orientation?
(A) Magnetic Torquers
(B) Reaction Wheels
(C) Thrusters
(D) Gyroscopes

13. What is the purpose of attitude stabilization in spacecraft?
(A) To maintain a stable orientation despite external disturbances
(B) To increase the spacecraft’s speed
(C) To manage the spacecraft’s power supply
(D) To calculate the spacecraft’s orbital trajectory

14. Which system uses inertial sensors to measure and control spacecraft orientation and movement?
(A) Inertial Navigation System (INS)
(B) GPS Navigation System
(C) Ground-Based Tracking System
(D) Star Tracker System

15. What is the advantage of using a star tracker for attitude determination?
(A) High accuracy in orientation measurements
(B) Low power consumption
(C) Independence from external signals
(D) Simplicity and low cost

16. Which type of control system uses the spacecraft’s angular momentum to maintain attitude?
(A) Control Moment Gyroscope (CMG)
(B) Reaction Wheel
(C) Magnetic Torquers
(D) Thrusters

17. What is the primary function of a spacecraft’s inertial navigation system (INS)?
(A) To provide precise position and velocity information
(B) To control the spacecraft’s orientation
(C) To measure atmospheric conditions
(D) To track celestial bodies

18. Which attitude control method involves using the spacecraft’s rotation to adjust its orientation?
(A) Spin Stabilization
(B) Magnetic Torquers
(C) Thruster Control
(D) Reaction Wheels

19. What is the primary role of attitude sensors in a spacecraft?
(A) To determine and provide data on spacecraft orientation
(B) To manage spacecraft propulsion systems
(C) To calculate the spacecraft’s altitude
(D) To monitor the spacecraft’s health

20. Which navigation system utilizes a combination of gyroscopes and accelerometers to track spacecraft motion?
(A) Inertial Measurement Unit (IMU)
(B) Global Positioning System (GPS)
(C) Star Tracker
(D) Magnetometer