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Spacecraft Dynamics and Control Quiz

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Questions and Answers

What are the fundamental components of an Attitude Control System (ACS) for a spacecraft?

Attitude sensors, attitude determination and control software, actuators (correct)

Sun sensors, redundant sensors, external inputs

Thrusters, star trackers, earth sensors

Gyroscopes, magnetic torqrods, wheels

Which category of control is considered more accurate and versatile for spacecraft?

Seldom control

Passive control

Active control (correct)

Redundant control

What is the main task of an Attitude Control System (ACS) for a spacecraft?

Determine and accurately reconstruct the spatial orientation of the spacecraft, and keep the spacecraft in the desired spatial orientation (correct)

Minimize the use of resources

Maintain the stability of the spacecraft's orbit

Provide redundant sensors for safety

What is the purpose of attitude sensors in an Attitude Control System (ACS)?

To determine the spatial orientation of the spacecraft Signup and view all the answers

What is the difference between passive control and active control for spacecraft?

Passive control is simple but much less accurate, while active control is more complex and expensive but also much more accurate and versatile Signup and view all the answers

What is the minimal set of parameters required for orbit determination?

(r,v) (position, velocity) Signup and view all the answers

Which factor contributes to the predicted values differing from the true ones in orbit determination?

All of the above Signup and view all the answers

What is the consequence of errors or inadequacy in the dynamical model in orbit determination?

The state determination must be repeated Signup and view all the answers

What is the state of a dynamical system?

The set of parameters required to predict the future evolution of the system Signup and view all the answers

What are the measurements linked to the dynamical state in orbit determination?

Range, range-rate, angles Signup and view all the answers

In the context of tracking configurations, what is the distinguishing feature of a three-way configuration?

It involves both downlink and uplink signals, as well as an onboard transponder Signup and view all the answers

What type of commands are associated with telecommand in the context of uplink?

Control commands Signup and view all the answers

Which segment of the space system is responsible for receiving telemetry data?

Control Station (TT&C) Signup and view all the answers

What distinguishes a two-way tracking configuration from a one-way configuration?

Carrier is generated by the ground station using the station master frequency standard Signup and view all the answers

Which type of signals does the ground segment handle for uplink and downlink activities?

Telemetry and telecommand signals Signup and view all the answers