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AstronautAtlas · one connected spaceflight archiveMethodology & updates Glossary

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ACTS vehicles

Dedicated spacecraft and related vehicle records for ACTS, including when they are part of the program archive.

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ACTS

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Transfer Orbit Stage official NASA archive view

Transfer Orbit StageSolid-propellant upper stage/Flown hardwareThe Transfer Orbit Stage was a single-stage, solid-propellant upper stage designed to send large payloads from low Earth orbit into energetic transfer trajectories.

Advanced Communications Technology SatelliteExperimental communications satellite/Mission concludedNASA satellite demonstrating high-frequency Ka-band communications, spot beams, onboard switching, and other technologies later used by commercial space networks.