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Definition

Control Moment Gyroscope

CMG

An attitude actuator consisting of a constant-speed rotor on a gimbal. Tilting the gimbal produces a much larger torque than a reaction wheel of equivalent mass, useful for large agile spacecraft.

Related terms

Concept of OperationsConOps

A document describing how a system will be used from the user's perspective. Covers operational scenarios, mission timel...

Controlled Unclassified InformationCUI

Information that requires safeguarding or dissemination controls per law, regulation, or government-wide policy, but is ...

Critical Design ReviewCDR

A phase gate review that evaluates the detailed design to ensure it satisfies the requirements and can proceed to fabric...

C3 Energy

The characteristic energy of an interplanetary trajectory, equal to the square of the hyperbolic excess velocity. C3 qua...

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