TACOMSAT		TActital COMmunications SATellite
TACSAT		TACtical SATellite
TAD		Thrust Augmented Delta
TAID		Thrust Augmented Improved Delta
TAIT-D		Thrust Augmented Improved Thor-Delta
TALT-D		Thrust Augmented Long Tank-Delta
TALT-T		Thrust Augmented Long Tank-Thor
TAM		Tri-Axis Magnetometer
TAT		Thrust Augmented Thor
TCELP		Two Color Earth's Limb Photography
TDF		Tele-Difusion Française
TDMA		Time-Division Multiple Access
TDOA		Time Difference Of Arrival
TDRSS		Tracking and Data Relay Satellite System
TEHM		TermoElectric Holding Module
TENCAP		Tactical Exploitation of National CAPabilities
TERLS		Thumba Equatorial Rocket Launching Station
TG		Traverse Gravimeter
TIROS		Television and Infra-Red Observation Satellite
TLP		Transient Lunar Phenomena
TM		Thematic Mapper
TO		Transfer Orbit
TOPS		Thermoelectric Outer Planets Spacecraft
TOS		Tiros Operational System
TRAAC		Transit Research And Attitude Control
TRS		Teleoperator Retrival System
TRS		Tetrahedral Research Satellite
TSS		Tethered Satellite System
TSX		Tri-Service Experiments
TT&C		Tracking, Telemetry and Commanding
TTS		Tracking Test Satellite
TVRDR		TeleVision Reduced Data Record