CTS: Canadian Technology Satellite
CTS: Communications Technology Satellite
CYSF: Cape York Space Facility
DADS: Dual Air Density Satellite
DAMA: Demand Assigned Multiple Access
DAOAR: Dominion Astrophysical Observatory Annual Report
DAP: Descent Analysis Program
DC: Delta Clipper
DDA: Division of Dynamical Astronomy
DDORe: David Dunlap Observatory Richmond Hill Reprints
DeaCo: Dearborn Observatory Contributions
DF: Development Flight
DF: Direct Flight
DFCS: Digital Flight Control System
DFI: Development Flight Instrumentation
DFI: Development Flight Integration
DFRC: Dryden Flight Research Center
DFRF: Dryden Flight Research Facility
DFS: Dynamic Flight Simulator
DLO: Director of Launch Operations
DLR: Deutsches Zentrum für Luft- und Raumfahrt
DMSP: Defense Meteorological Satellite Program
DMSP: Defense Meterological Satellite Program
DMSS: Defense Meteorological Satellite System
DNO: Descending-Node Orbit
DOAMS: Distant-Object Attitude-Measuring System
DOC: Drift-Orbit Correction
DODSTP: Department of Defense Standard Satellite
DOI: Descent Orbit Insertion
DOI: Direct Orbit Insertion
DOMSAT: Domestic Satellite
DORIS: Determination of Orbit Radio Positioning Integrated from Shuttle
DORIS: Doppler Orbitography and Radiopositioning Integrated by Satellite
DPS: Descent Propulsion System
DRS: Data Relay Satellite
DRSS: Data Relay Satellite System
DS3: Deep Space Surveillance System
DSAT: Defensive Satellite
DSCS: Defense Satellite Communications System
DSCS: Defense Support Communication Satellite