[sci.space] Mixed Fleet Manifest for February 1991 Part 4 of 4

yee@trident.arc.nasa.gov (Peter E. Yee) (02/05/91)

                        Satellite                        radiation.
   IRCFE                Infrared Communications          Demonstrates the feasibility of using diffuse
                        Flight Experiment                infrared light as a carrier for Shuttle crew
                                                         communications.
   IRIS                 Italian Research Interim         Italian upper stage for use on the Shuttle.
                        Stage
   IRT                  Integrated Rendezvous Radar      A target for testing of Shuttle Orbiter rendezvous
                        Target                           techniques and capabilities in orbit.
   ISAC                 INTELSAT Solar Array             Studies atomic oxygen effects on materials (silver
                        Coupons                          and zinc sulphite).
   ISAIAH               Israeli Space Agency             Gravity perceptions by hornets and their reactions
                        Investigation About Hornets      to changes in gravity.
   ISAS                 Institute of Space and           The Institute of Space and Astronautical Science of
                        Astronautical Science            Japan.
   ISC                  International Space              Commercial joint endeavor activity.
                        Corporation
   ISEM                 ITA Standardized Experiment      Cross-bay structure for accommodating multiple
                                                         material processing experiments and other
                                                         investigations
   ISF                  Industrial Space Facility        Commercially-owned, man-tended orbiting facility
                                                         for research and manufacturing activities.
   ITV                  Instrumented Test Vehicle        Target for Anti Satellite.
   IUS                  Inertial Upper Stage             Upper stage system for Shuttle and Titan.
   IUTE                 Industry University              Series of Space Technology experiments for U.S.
                        Technology Experiment            industry and universities to be flown on the
                                                         Shuttle or ELV.
   JOINT DAMPING                                         Measurement of the damping behavior of liquids in a
                                                         variety of rotating tanks.
   L3                   Latitude/Longitude Locator       Tests the capability of a space sextant/camera
                                                         system to locate earth surface targets within 10
                                                         nautical miles.
   LAGEOS               Laser Geodynamics Satellite      Spherical passive satellite covered with
                                                         retroflectors which are illuminated by ground-based
                                                         lasers to determine precise measurements of the
                                                         Earth's crustal movements.
   LDCE                 Limited Duration Space           Evaluation of candidate space structure composite
                        Environment Candidate            materials for degradation due to exposure in LEO
                        Materials Exposure               (passive systems).
   LDEF                 Long Duration Exposure           Free-flying satellite providing accommodations for
                        Facility                         experiments requiring long term exposure to the
                                                         space environment.
   LEO                  Low Earth Orbit
   LFC                  Large Format Camera              Acquire synoptic, high-resolution images of the
                                                         Earth's surface.
   LIFESAT              Life Sciences Satellite          Life science missions with micro-gravity
                                                         experimentation as the primary objective.
   LIQUID MOTION        Liquid Motion in a Rotating      Investigation of the behavior of liquids in a
                        Tank                             variety of rotating tanks.
   LITE                 Lidar In-Space Technology        Project to measure the atmospheric parameters from
                        Experiment                       a space platform utilizing laser sensors.
   LM                   Long Module                      Spacelab Crew Module.
   LO                   Lunar Observer                   Geological, elemental, gravity, and magnetic field
                                                         mapping of moon.
   MACE                 Middeck Active Control           Validation of controls/structures interaction
                        Experiment                       technologies in zero gravity.
   MAGELLAN                                              Spacecraft designed to globally map the surface of
                                                         Venus.
   MAGSAT               Magnetic Field Satellite         Map the magnetic field of the earth.
   MAR                  Middeck Accommodations Rack      An experiment integration facility installed in the
                                                         middeck of the Shuttle with stowage volume
                                                         equivalent to five middeck lockers.  Power
                                                         distribution and active thermal control options are
                                                         available.
   MARS OBSERVER                                         Spacecraft to study the surface, climate,
                                                         gravitational, and magnetic fields of the planet
                                                         Mars.
   MARS OBSERVER                                         Spacecraft to study Martian upper atmosphere and
   II                                                    ionosphere.  Precursor to Mars Rover Sample Return
                                                         Mission.
   MBB                  Messerschmitt-Boelkow-Blohm      A German industrial aerospace organization.
   MD                   Middeck                          Lower deck of the Shuttle crew compartment.
   MEMBRANE             Permeable Membrane for           Verification of membrane transport performance in
                        Plant Nutrient Delivery          low gravity.
                        System
   MGM                  Mechanics of Granular            Microgravity experiment to study the effects of
                        Materials                        heat and near-zero gravity on the physical
                                                         properties associated with various materials.
   MICROWAVE            Microwave Power                  Demonstration of ability to transmit microwave
                        Transmission Phase I             power in space.
   MIS I                Drug Microencapsulation in       Evaluates the effects of microgravity on methods
                        Microgravity                     used to encapsulate drugs within biodegradable
                                                         polymers.  Combines materials science with
                                                         biomedical product development and results in the
                                                         production of a pharmaceutical product in space.
   MLE                  Mesoscale Lightning              Record and observe the visual characteristics of
                        Experiment                       large scale lightning as seen from space using
                                                         onboard television cameras.
   MLR                  Monodisperse Latex Reactor       Produces monodisperse latex particles in the two to
                                                         forty micron range.
   MODE                 Middeck 0-g Dynamics             To study the dynamics of liquids and skewed space
                        Experiment                       structures in the microgravity environment.
   MORELOS                                               Mexican communication satellite system.
   MPEC                 Multi-Purpose Experiment         An extended Hitchhiker-G.  GAS canister capable of
                        Canister                         deploying an internally stowed payload.
   MPESS                Mission Peculiar Equipment       A cross-bay Shuttle payload carrier and support
                        Support Structure                system for payloads weighing up to 3000 pounds.
   MPSE                 Mexican Payload Specialist       Experiment performed by a Mexican payload
                        Experiment                       specialist on the Shuttle flight which deployed the
                                                         MORELOS satellite.
   MPWD                 Microgravity Packed Bed
                        Water Dynamics
   MS                   Mission Specialist               A member of Shuttle flight crew primarily
                                                         responsible for Orbiter subsystem and payload
                                                         activities.
   MS                   Manned Systems                   Demonstrates critical components of SSF equipment
                                                         such as food systems and personal hygiene
                                                         facilities.
   MSAT                 Mobile Satellite                 Satellite for developing advanced ground
                                                         technologies and techniques for mobile
                                                         communications via satellite.
   MSL                  Materials Science                A payload which remains attached to the Shuttle to
                        Laboratory                       perform materials processing experiments in low-g.
   MTC                  Man-tended Capability            Ability to perform laboratory operations on the SSF
                                                         when the Shuttle is present.
   N/A                  Not Applicable
   NATO                 North Atlantic Treaty            Communications satellite for NATO.
                        Organization
   NOAA                 National Oceanic and             Series of operational environmental satellites in
                        Atmospheric Administration       polar orbit.
   NOSL                 Night/Day Optical Survey of      Optical survey of lightning.
                        Lightning
   NOVA                                                  Advanced Navy Navigation Satellite.
   NTE                  NASA Technology Experiments      A series of technology experiments sponsored by the
                                                         Office of Aeronautics and Space Technology and
                                                         flown on the Shuttle.
   OA                   NASA Office of the
                        Administrator
   OAET                 NASA Office of Aeronautics,
                        Exploration and Technology
   OAET-1               Office of Aeronautics,           Several advanced space technology experiments
                        Exploration and                  utilizing a common data system and mounted on a
                        Technology-1                     platform in the Shuttle bay, previously called
                                                         OAST-2.
   OAET-FLYER           Office of Aeronautics,           Free flyer deployed from the Shuttle containing
                        Exploration and                  several space technology experiments.
                        Technology-Flyer
   OASIS                OEX Autonomous Supporting        Collects environmental data in the Orbiter during
                        Instrumentation System           dynamic STS flight phases.
   OAST                 NASA Office of Aeronautics
                        and Space Technology
   OAST-1               Office of Aeronautics and        A payload which remained attached to the Shuttle to
                        Space Technology-1               demonstrate a large light-weight solar array
                                                         capable of being restowed in flight.
   OC                   NASA Office of
                        Communications
   OCP                  NASA Office of Commercial
                        Programs
   OCTW                 Optical Communication Thru       Demonstrates system to allow Shuttle crews to
                        the Shuttle Window Flight        interface with payloads without depending on
                        Demonstration                    Orbiter communication systems.
   OEX                  Orbiter Experiments              Series of engineering experiments on the Orbiter.
   OIM                  Oxygen Interaction with          Tests which obtained quantitative rates of oxygen
                        Materials                        interaction with materials used on the Orbiter and
                                                         advanced payloads.
   OPM                  Optical Properties Monitor       An experiment to determine the effects of the space
                                                         environment on critical spacecraft and optical
                                                         materials by evaluating optical properties over
                                                         time on a deployable carrier.
   ORFEUS-SPAS          Orbiting and Retrievable         A German developed payload to explore the
                        Far and Extreme Ultraviolet      distribution and character of radiation absorbing
                        Spectrometer                     material in the solar system and to perform direct
                                                         ultraviolet observations of the direct interstellor
                                                         component.
   ORS                  Orbiter Refueling System         An experiment to demonstrate the ability of the STS
                                                         to perform on-orbit satellite refueling.
   OSCAR                Orbiting Satellite Carrying      Amateur communication satellite.
                        Amateur Radio
   OSF                  NASA Office of Space Flight
   OSL                  Orbiting Solar Laboratory        Provide detailed data on the sun, to augment our
                                                         studies of distant stars and cosmic processes.
   OSO                  NASA Office of Space
                        Operations
   OSS-1                Office of Space Science-1        Single Pallet carrying eight experiments to
                                                         demonstrate the use of the Shuttle for
                                                         investigations in space plasma physics, solar
                                                         physics, astronomy, etc. and to characterize the
                                                         Orbiter and payload bay environment.
   OSSA                 NASA Office of Space
                        Science and Applications
   OSTA-1               Office of Space and              Shuttle attached payload using the Shuttle Imaging
                        Terrestial Applications          Radar (SIR-A) to obtain high resolution images of
                                                         earth.
   OSTA-2               Office of Space and              Microgravity experiments.
                        Terrestial Applications
   OSTA-3               Office of Space and              Acquire photographic and radar images of the
                        Terrestial Applications          Earth's surface.
   P-CELL               Gravity, Chromosomes, and        Test of specimens of aseptically cultured plant
                        Organized Development in         cells to determine if they will undergo normal cell
                        Plant Cells                      division and growth as on Earth.
   P-CENT               Gravitropic Responses of         Quantitative characterization of plant cell growth
                        Plant Seedlings                  from gravitropic plant seeds without guidance from
                                                         a significant gravity force.
   PAL or PALL          Pallet                           Spacelab Pallet structure.
   PALAPA                                                Synchronous satellite communication system for the
                                                         Republic of Indonesia.
   PAM                  Payload Assist Module            An upper stage system used on the Shuttle and the
                                                         Delta ELV.
   PARE                 Physiological & Anatomical       Study the physiological and anatomical changes that
                        Rodent Experiment                occur in mammals under weightless space flight
                                                         conditions.
   PBE                  Pool Boiling Experiment          Study fundamental mechanisms that constitute pool
                                                         boiling.
   PCG-II               Protein Crystal Growth-II        PCG activity in controlled temperature module.
   PCG-III              Protein Crystal Growth-III       Obtain high quality protein crystals to facilitate
                                                         analysis of structures.
   PCGPROTO             Protein Crystal Growth           Development of rapid response equipment to
                        Prototype                        facilitate investigation of new/special PCG
                                                         techniques or samples.
   PDRS/PFTA            Payload Deployment and           First object to be unberthed and reberthed by the
                        Retrieval System/Payload         remote manipulator system, used to test the
                        Flight Test Article              performance of the RMS in handling a massive
                                                         object.
   PHCF                 Pituitary Growth Hormone         Microgravity induced effects on pituitary (active
                        Cell Function                    growth) hormones in various types of living cells.
   PIONEER VENUS                                         Remote sensing and direct measurements of Venus and
                                                         its surrounding environment.
   PL OPPTY             Payload Opportunity
   PLAN                 Planetary Trajectory             High Energy Trajectory to Outer Planets.
   PLC                  Payload Commander                A member of the Shuttle crew having overall crew
                                                         responsibility for planning, integration, and
                                                         on-orbit coordination of payload mission
                                                         activities.
   PLT                  Pilot                            A member of the Shuttle crew whose primary
                                                         responsibility is to pilot the Orbiter.
   PLUM                 Polymerization With Light        Perform ultra-violet light induced polymerization
                        Under Microgravity               of organic copolymers in microgravity
   PM                   Polymer Morphology               Determines effects of weightlessness on
                                                         morphological formation of polymers as they undergo
                                                         physical transition.
   PMC                  Permanently Manned               Ability for a four person crew to occupy the Space
                        Capability                       Station Freedom Manned Base on a permanent basis
                                                         with periodic crew rotation.
   PMG                  Plasma Motor Generator           ELV secondary payload experiment to verify ability
                                                         of plasma sources to couple electric current along
                                                         a wire.
   PMZF                 Programible Multi-Zone           Materials processing apparatus located in the
                        Furnace                          middeck accommodations rack.
   POLAR                                                 Polar Auroral Plasma Physics spacecraft.
   PPE                  Phase Partitioning               Study separation behavior of two phase system
                        Experiment                       generated by the mixture in water of polyglucose
                                                         and polyethylene glycol.
   PROFILE              Navy Satellite                   Small ELV class spacecraft -- Navy experimental
                                                         communications satellite.
   PS                   Payload Specialist               A member of the Shuttle crew, who is not a NASA
                                                         astronaut, whose presence is required to perform
                                                         specialized functions with respect to one or more
                                                         payloads or other mission unique activities.
   PSE                  Physiological Systems            Examines effects of hormone therapy on changes in
                        Experiment                       organic systems during spaceflight.
   PVTOS                Physical Vapor Transport of      Grow crystalline films on selected substrates of
                        Organic Solids                   organic solids
   RADARSAT             Radar Satellite                  Remote free flyer sensing satellite that will
                                                         monitor land, sea and ice for five years over the
                                                         poles (U.S./Canadian).
   REQ                  Request
   RME                  Radiation Monitoring             Measures gamma radiation levels in the Shuttle
                        Equipment                        environment.
   RMS                  Remote Manipulator System        A Canadian developed, remotely controlled (from the
                                                         Orbiter crew cabin) arm for deployment and/or
                                                         retrieval of payloads from the Orbiter payload bay.
   S                    Scout                            Small Class Expendable Launch Vehicle.
   SAGE                 Strategic Aerosol and Gas        Map vertical profiles of the ozone, aerosol,
                        Experiment                       nitrogen Rayleigh molecular extinction around the
                                                         globe.
   SAM                  Shuttle Activation Monitor       Collects gamma and X-ray data as a function of
                                                         geomagnetic location from spacecraft materials.
   SAMPEX               Solar, Anomalous, and            A spacecraft to study solar energetic particles,
                        Magnetospheric Particle          anomalous cosmic rays, galactic cosmic rays, and
                        Explorer                         magnetospheric electrons.
   SAMS                 Space Acceleration               Provides Orbiter acceleration measurements in
                        Measurement System               support of microgravity experiments.
   SAREX                Shuttle Amateur Radio            Low cost space to ground voice and slow scan
                        Experiment                       television experiment.
   SAS                  Space Adaptation Syndrome        Physiological changes which occur when adapting to
                                                         microgravity.
   SATCOM                                                RCA communications satellite.
   SBS                  Satellite Business Systems       All digital domestic communication system servicing
                                                         large industry, the government, etc.
   SE                   Student Experiment               Experiments sponsored by the Shuttle Student
                                                         Involvement Program (SSIP).
   SEDS                 Small Expendable Deployer        Experimental tether deployment device.
                        System
   SFMD                 Storable Fluid Management        Demonstrates transfer of room-temperature fluids in
                        Demonstration                    zero-g using various transfer techniques.
   SFP                  Space Flight Participant         A Shuttle crew member whose presence is not
                                                         required for operation of payloads or mission
                                                         unique activities, but is determined by the NASA
                                                         Administrator to contribute to other approved NASA
                                                         objectives or to be in the national interest.
   SFU-RETR             Space Flyer Unit Retrieval       A reusable, retrievable unmanned free flyer to be
                                                         launched on the Japanese H-II rocket and retrieved
                                                         by Shuttle.
   SHARE                Space Station Heat Pipe          Demonstrates and quantifies the thermal performance
                        Advanced Radiator Element        of a high capacity, 50 foot, space constructible,
                                                         heat pipe radiator element.
   SHEAL                Shuttle High Energy              Obtains images, spectra and timing data on
                        Astrophysics Laboratory          celestial X-ray sources and the spectrum at the 30
                                                         ft. X-ray background.
   SHOOT                Super Fluid Helium On Orbit      Demonstrates the feasibility of on-orbit transfer
                        Transfer Demonstration           of superfluid helium using thermomechanical
                                                         techniques.
   SII                  Space Industries, Inc.           U.S. company providing commercially-owned
                                                         Industrial Space Facility (ISF).
   SIR                  Shuttle Imaging Radar            Series of synthetic aperture radar experiments.
   SIRTF                Space Infrared Telescope         Will span the infrared part of the spectrum with a
                        Facility                         thousand-fold increase in sensitivity.
   SKIRT                Spacecraft Kinetic Infrared      Measures the infrared emissions produced from
                        Test                             spacecraft and optical surfaces in low earth orbit.
   SKYNET                                                United Kingdom military communication satellite.
   SL-D1                Spacelab D1                      First dedicated German Spacelab mission.
   SL-D2, -D3           Spacelab D2, D3                  Second and third in a series of German Spacelab
                                                         Missions.  Objectives include microgravity research
                                                         and technology preparation for Space Station use.
   SL-E2                Spacelab European Mission        ESA sponsored science mission directed toward
                                                         multidiscipline research in material science, fluid
                                                         science, life science, space science, observation
                                                         and technology.
   SL-J                 Spacelab J                       Combined Japanese/NASA Spacelab mission. Objectives
                                                         include life sciences, microgravity, and technology
                                                         research.
   SLS                  Space Life Sciences              Investigates the effects of weightlessness exposure
                        Laboratory                       using both man and animal specimens.
   SLSTP                Space Life Sciences              Series of payloads to support a broad range of life
                        Training Program                 science studies.
   SLTP                 Space Loss Tissue Payload        Life sciences investigations.
   SMEX                 Small Explorer                   Payloads being designed to fly on Small Class ELV.
   SMR                  San Marco Range                  Italian small class ELV launch range off Kenya
                                                         coast.
   SMRM                 Solar Maximum Repair             Conducted a technology demonstration of the STS
                        Mission                          capability to rendezvous, service, checkout and
                                                         deploy.
   SOHO                 Solar Heliospheric               Provides optical measurements as well as plasma
                        Observatory                      field and energetic particle observations of the
                                                         sun system for studies of the solar interior,
                                                         atmosphere and solar wind.
   SOLAR PROBE                                           Study unexplored region of the solar atmosphere,
                                                         measure electromagnetic fields and study the
                                                         particle populations close to the sun.
   SOOS                 Stacked OSCAR on Scout           Two OSCAR satellites.
   SPACEHAB                                              U.S. company providing commercially-owned
                                                         pressurized module for conducting experiments in a
                                                         man-tended environment.
   SPACELAB 1                                            Demonstrated Spacelab's capabilities for
                                                         multidisciplinary research.
   SPACELAB 2                                            Demonstrated Spacelab's capabilities for
                                                         multidisciplinary research and verified system
                                                         performance.
   SPACELAB 3                                            Dedicated materials processing mission emphasizing
                                                         research in microgravity conditions.
   SPADVOS              Spaceborne Direct Viewing        Evaluates the crew's ability to utilize direct
                        Optical System                   viewing system to allow realtime detection of
                                                         ground and airborne targets.
   SPAS                 Shuttle Pallet Satellite         Payload Carrier developed by MBB of W. Germany.
   SPAS-01/01A          German Shuttle Pallet            Demonstrates the utilization of the MBB platform
                        Satellite                        and systems as a carrier for science experiments.
   SPAS-III             Shuttle Pallet Satellite         A reflight of the Infrared Background Survey (IBSS)
                        III                              mission.
   SPTN                 Shuttle Pointed Autonomous       X-ray astronomy, medium energy survey mission,
                        Research Tool for Astronomy      using retrievable free flyer.
   SPTN-HALLEY          SPARTAN-HALLEY                   Search for molecules containing nitrogen, carbon or
                                                         sulfur and observes the UV spectrum between 2100
                                                         and 3400A.
   SRAD/TPITS           Shuttle Radiator Assembly        Evaluates on-orbit thermal performance of a
                        Demonstration/Two Phase          representative portion of an integrated two-phase
                        Integrated Thermal System        thermal bus and on-orbit assembly of Space Station
                                                         radiator elements using Remote Manipulator System
                                                         and Extra Vehicular Activity techniques.
   SRL                  Space Radar Laboratory           Series of flights to acquire radar images of the
                                                         Earth's surface.  The images will be used for
                                                         making maps, interpreting geological features, and
                                                         conducting resource studies.
   SS                   Sun Synchronous                  Sun-synchronous polar orbit.
   SSBUV                Shuttle Solar Backscatter        Series of flights to measure ozone characteristics
                        Ultra-Violet Instrument          of the atmosphere.
   SSCE                 Solid Surface Combustion         Determines the gas-phase flamespread over solid
                        Experiment                       fuel surfaces in microgravity.
   SSE                  Space Suit Evaluation            Demonstrates operational aspects of the Space
                                                         Station's extra vehicular activity suit.
   SSF                  Space Station Freedom            Orbiting Space Station.
   SSF/L                Space Station                    Launches to the SSF Manned Base with emphasis on
                        Freedom/Logistics                logistics support materials.
   SSF/MB               Space Station Freedom            Assembly launches of modules for the SSF Manned
                        Manned Base                      Base.
   SSF/UF               Space Station
                        Freedom/Utilization Flight
   SSIP                 Shuttle Student Involvement      Competitions held between 1981-1985 in which the
                        Program                          winning High School students proposed experiments
                                                         which were accepted for Shuttle flights.
   STEX                 Sensor Technology                Demonstrates radiation measurement technology.
                        Experiment
   STL                  Space Tissue Loss Model          An experiment to validate or confirm model of
                                                         skeletal and cardiac muscle atrophy, collect data
                                                         on catabolic pathway and control mechanisms, and
                                                         test candidate pharmaceuticals for efficacy.
   STP-XX               Space Test Program-XX            A series of payloads which include DOD STP
                                                         secondary experiments.
   STS                  Space Transportation System
   STTP                 Life Sciences Space              Activity to develop and encourage interest on the
                        Technology Training Program      part of college students in space biology and
                                                         medicine.
   SWAS                 Submillimeter Wave               Spacecraft to study how molecular clouds collapse
                        Astronomy Satellite              to form stars and planetary systems.
   SYNCOM               Hughes Geosynchronous            Provides communication services from geosynchronous
                        Communication Satellite          orbit principally to the U.S. government.
   TANK VENT            Tank Venting Experiment          Investigation of concepts to provide tank
                                                         fill-while-venting to 90 percent full capacity.
   TAPS                  Two Axis Pointing System         An instrument support system which allows pitch,
                                                         roll, or combinations thereof to precisely point
                                                         instruments at different targets.
   TBD                  To Be Determined
   TDRS                 Tracking and Data Relay          Series of NASA tracking, data and communications
                        Satellite                        satellites to replace the NASA ground based
                                                         network.
   TELESAT              Canadian Telecommunication       Communication satellite built for Telesat Canada to
                        Satellite                        provide voice and TV coverage to trans-Canada
                                                         network of Earth stations.
   TELSTAR              AT&T Communications              AT&T COMSTAR replacement -- provides communication
                        Satellite                        services to the continental U.S., Alaska, Hawaii,
                                                         and Puerto Rico.
   TEMP                 Two Phase Mounting Plate         Operates a mechanically pumped two phase head
                        Experiment                       acquisition transport and rejection system in
                                                         microgravity.
   TERRA SCOUT                                           Evaluates the ability of a military expert to
                                                         conduct realtime analysis from low earth orbit.
   TIP                  Transit Improvement Program      Improved configuration Transit Navigation
                                                         Satellite.
   TIS                  Teacher in Space
   TITAN II                                              DOD medium class expendable launch vehicle.
   TITAN III                                             Commercial intermediate class expendable launch
                                                         vehicle.
   TITAN IV                                              DOD large class expendable launch vehicle.
   TLD                  Thermoluminescent Dosimeter      Obtains gamma ray measurements of the Shuttle
                                                         environment.
   TOMS                 Total Ozone Mapping              Study of Stratospheric ozone.
                        Spectrometer
   TOS                  Transfer Orbit Stage             Upper stage system for Shuttle and Titan.
   TPCE                 Tank Pressure Control            A study to determine the effects of microgravity on
                        Experiment                       the thermal stratification of fluids and to
                                                         validate the effects of jet induced mixing.
   TSS                  Tethered Satellite System        System capable of deploying and retrieving
                                                         satellite attached by a wire tether from distances
                                                         up to 100 km from the Orbiter.
   U.S.                 United States
   UARS                 Upper Atmosphere Research        Satellite to study chemical processes acting within
                        Satellite                        and upon the stratosphere, mesosphere, and lower
                                                         thermosphere.
   ULYSSES              Formerly ISPM                    Investigates the properties of the heliosphere (sun
                        (International Solar Polar       and its environment).
                        Mission)
   USML                 United States Microgravity       Series of flights of a microgravity materials
                        Laboratory                       processing laboratory attached to the Shuttle.
   USMP                 United States Microgravity       Conduct materials processing experiments in the
                        Payload                          microgravity environment available in the Orbiter
                                                         cargo bay while in low earth orbit.
   USS                  Unique Support Structures
   UV                   Ultraviolet
   UVLIM                Ultraviolet Limb Imaging         Establishes the earth and space extreme UV
                        Experiment                       environment and observes space structure and time
                                                         variation in segments of the 1100-3000 angstrom
                                                         range.
   UVPI                 Ultraviolet Plume Imager         Free-flying satellite observation of Orbiter OMS
                                                         burns.
   VCS                  Voice Controlled System          Evaluates effectiveness of voice controlled system
                                                         on the Shuttle cargo bay closed circuit television.
   VFT                  Visual Function Test in          A biomedical study to determine effects of
                        Space                            microgravity on human visual performance.
   VIPOR                Visual Investigation             A series of experiments to study elements that can
                        Program on Orbiter               affect and degrade the performance of any optical
                        Operations                       (photo, visual, or video) system.
   WESTAR               Western Union Telegraph          A C-band satellite to replenish and expand the
                        Communication Satellite          Westar system (Western Union domestic communication
                                                         system).
   WFF                  Wallops Flight Facility
   WIND                                                  Satellite to measure solar wind input to
                                                         magnetosphere.
   WISP                 Waves in Space Plasma            An attached payload to conduct a series of active
                                                         experiments using radio transmitters to perturb the
                                                         space plasma environment.
   WOSE                 Weather Officer in Space         Assesses the feasibility of expert weather
                        Experiment                       observations from space to observe, photograph, and
                                                         videotape atmospheric and ionospheric phenomena.
   WSF                  Wake Shield Facility             Molecular and chemical beam epitaxy growth of
                                                         compound semiconductors, high temperature
                                                         superconductors, and other materials using
                                                         techniques requiring ultra-high vacuum, high
                                                         pumping speeds, and relatively large working
                                                         volumes.
   WSMC                 Western Space and Missle         A USAF organization with Headquarters at Vandenberg
                        Center                           Air Force Base, California.
   XTE                  X-Ray Timing Explorer            A payload to be used in Earth orbit to investigate
                                                         the physical nature of compact X-Ray sources by
                                                         studying fluctuations in X-Ray brightness over
                                                         time-scales ranging from microseconds to years.