page_title: Zero-propellant maneuver
hierarchical_section_title: Zero-propellant maneuver
caption_attribution_description: English: Gyroscope of the International Space Station Boeing technicians remove the cover from a Control Moment Gyroscope (CMG) in the Space Station Processing Facility at KSC. The CMG will be attached to the Integrated Truss Structure (ITS) Z1. Gyroscopes are used for stabilization of the International Space Station (ISS). The CMG and Z1, part of the construction of the ISS, will be carried on STS-92, the third U.S. flight planned for on-orbit construction of the ISS. STS-92 is scheduled for liftoff on June 17, 1999, aboard the Space Shuttle Atlantis.
context_page_description: A zero-propellant maneuver is an optimal attitude trajectory used to perform spacecraft rotational control without the need to use thrusters. ZPMs are designed for spacecraft that use momentum storage actuators. Spacecraft ZPMs are used to perform large angle rotations or rate damping without saturating momentum actuators, and momentum dumping without thrusters.
context_section_description: A zero-propellant maneuver (ZPM) is an optimal attitude trajectory used to perform spacecraft rotational control without the need to use thrusters. ZPMs are designed for spacecraft that use momentum storage actuators. Spacecraft ZPMs are used to perform large angle rotations or rate damping (detumbling) without saturating momentum actuators, and momentum dumping (from storage) without thrusters.
caption: Zero-propellant maneuvers can be achieved by carefully planning and commanding operations with attitude control devices such as this Control Moment Gyroscope for the International Space Station
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