ADCS/GNC Lesson Review

Question 1

The two general types of ADCS strategies are:

a. Passive and Active
b. Active and In-active
c. Passive and Reaction Wheel
d. Gravity Gradient and Magnetorquer

Answer 1

a. Passive and Active

Question 2

Spacecraft disturbance torques include: ______, ______, ______, and _______.

a. Active, Passive, Recursive, Spinning
b. Gravity Gradient, Solar Radiation, Magnetic, Aerodynamic
c. Gravity Gradient, Control Moment, Aerodynamic, Kalman
d. Thrusters, Reaction Wheels, Torque Rods, Control Moment Gyros

Answer 2

b. Gravity Gradient, Solar Radiation, Magnetic, Aerodynamic

Question 3

True/False: A Kalman Filter is a recursive algorithm that integrates information from multiple sensors, gathered at different times to generate “optimum” estimates of current state.

Answer 3

True

Question 4

True/False: While very useful for agile spacecraft control, reaction wheels require periodic Momentum Dumping when the wheels become saturated.

Answer 4

True

Question 5

The primary actuator for orbit control is:

a. a warp drive
b. a gravity gradient boom
c. a reaction wheel
d. a rocket

Answer 5

d. a rocket