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Link to Subject Category
safety procedures (engineering) - 31
safety systems (aircraft) - 03
safety systems (spacecraft) - 16
sailplane aerodynamics - 02
salinity (oceanography) - 48
sampling techniques (quality control) - 38
sampling techniques (statistics) - 65
sandwich structures - 39
satellite communications (earth communications) - 32
satellite constellations - 18
satellite derived atmospheric profiles - 43
satellite launching dynamics - 15
satellite networks (earth communications) - 32
satellite observation (remote sensing applications) - 43
satellite stabilization - 18
satellites for air, land, or sea navigation - 18
satellites for air, land, or sea traffic control - 18
scatterometers (design and techniques) - 35
scatterometers (remote sensing applications) - 43
scene analysis (robotics) - 63
Schlieren optics - 74
scientific satellites - 18
scramjet engines (aircraft) - 07
sea ice - 48
sea navigation (aircraft related) - 04
sea water - 48
sealants (metallic materials) - 26
sealants (nonmetallic materials) - 27
seals (stoppers) - 37
search and rescue operations (air) - 03
search and rescue operations (communications) - 17
search and rescue operations (space) - 16
search and rescue satellites - 18
SEASAT (configurations) - 18
SEASAT (remote sensing applications) - 43
seasonal variations - 47
seat belts (aircraft) - 03
sediments (oceanography) - 48
seismology - 46
selenography - 91
selenology - 91
self assembling structures - 39
self-repairing computer systems - 62
semiconductor devices - 33
semiconductor lasers - 36
semiconductor materials - 76
sensors for aircraft equipment and operation - 06
sensors for spacecraft equipment - 19
sensors - 35
sensory deprivation (physiological effects, human) - 52
sensory deprivation (psychological effects, human) - 53
sensory organs (human) - 52
separation and staging techniques (for stages of launch vehicles) - 15
separation and staging techniques (spacecraft) - 18
separations chemistry - 23
service life of propellants and fuels - 28
service life - 38
service oriented architecture (SOA) - 61
servomechanisms (electrical aspects) - 33
servomechanisms (mechanical aspects) - 37
set theory - 67
severe storms (aircraft safety) - 03
sewage disposal - 85
shafts (machine elements) - 37
shear loads - 39
shear strength (composite materials) - 24
shear strength (metallic materials) - 26
shear strength (structures) - 39
sheer strength (nonmetallic materials) - 27
shells (structures) - 39
shock testing (quality control) - 38
shock testing (structural analysis) - 39
shock tube instruments - 35
shock tubes and tunnels - 09
shock waves - 34
short pulsed lasers - 36
shoulder harness (aircraft) - 03
shoulder harness (spacecraft) - 16
Shuttle Imaging Radar (earth resources) - 43
Shuttle Imaging radar (theory and techniques) - 17
shuttlecraft landing facilities - 14
side looking radar (earth resources) - 43
side looking radar (theory and techniques) - 32
signal analyzers - 32
signal decoding - 32
signal detection - 32
signal encoding - 32
signal generators (applications) - 33
signal generators (theory and techniques) - 32
signal modulators - 32
signal processing - 32
signature analysis (earth resources) - 43
silicon cells (applications) - 44
silicon cells (electrical properties) - 33
silicon materials - 27
simulators (aircraft) - 09
simulators (space) - 14
single event transients - 33
single event upsets - 33
single-stage launch vehicles - 15
sintering (metallic materials) - 26
skin friction - 34
skin temperature indicators (aircraft) - 06
skin temperature indicators (spacecraft) - 19
sleep apnea - 52
sleep deprivation (physiological effects, human) - 52
sleep deprivation (psychological effects, human) - 53
sneak circuit analysis - 33
snow and ice observations - 43
snow cover - 47
snow - 47
social interaction - 53
social sciences - 80
sociological research (humanities) - 80
sociological research (psychology, human) - 53
sodar (sound detection and ranging) - 71
software debugging - 61
software engineering - 61
software reuse - 61
soil identification - 43
soil mechanics - 46
soil pollution - 45
soil sampling and analysis (extraterrestrial life) - 55
soil sampling and analysis (planetology) - 91
soil sampling - 46
solar activity - 92
solar atmosphere - 92
solar cells (electrical design) - 33
solar cells (energy conversion) - 44
solar constants - 92
solar corona - 92
solar cycles - 92
solar density - 92
solar eclipses - 92
solar electric ion propulsion - 20
solar electric propulsion - 20
solar flares - 92
solar generators - 44
solar heating (space applications) - 44
solar heating simulators - 14
solar magnetic field - 92
solar mass - 92
solar physics - 92
solar power (space applications) - 44
solar radiation - 92
solar radio emissions - 92
solar sails - 20
solar simulators - 14
solar spectra - 92
solar state circuitry - 33
solar structure - 92
solar system bodies - 91
solar system evolution - 90
solar wind - 92
solar-atmosphere interactions - 46
solar-atmospheric interactions - 47
solid propellant curing - 28
solid propellant rocket engines - 20
solid propellants - 28
solid state devices - 33
solid state lasers - 36
solid state physics - 76
solidification (solid state) - 76
solitary waves - 70
solvents - 27
sonic boom (aerodynamically generated) - 02
sonic boom (noise pollution) - 45
sonic boom (theory) - 71
sound absorption - 71
sound attenuation - 71
sound generation in ducts - 71
sound generation - 71
sound propagation - 71
sound transmission - 71
sounding rockets - 15
space adaptation (physiological, human) - 52
space adaptation (psychological effects, human) - 53
space based data acquisition stations - 17
space based data acquisition systems - 17
space based equipment for space processing - 29
space based maintenance and servicing; - 12
space biology - 55
space cabin atmosphere sensors - 19
space cabin atmosphere - 54
space cabin oxygen supplies - 54
space cabin water supplies - 54
space colonies - 12
space colonization - 12
space commercialization (legal aspects) - 84
space commercialization (management) - 81
space commercialization (space processing) - 29
space communications networks - 17
space communications - 17
space debris (spaceflight hazard) - 16
space environment effects (biological, animal and plant) - 51
space environment effects (physiological, human) - 52
space exploration (mission planning) - 12
space facility for cryogenic materials - 14
space flight commercialization - 16
space flight communication techniques and theory - 17
space flight dynamics (performance and testing) - 18
space flight dynamics (theory) - 13
space flight effects (physiological, human) - 52
space flight effects (psychological, human) - 53
space flight feeding - 54
space flight hazards - 16
space flight navigation techniques and theory - 17
space geodesy - 46
space habitats - 54
space hygiene - 54
space laboratories - 18
space law - 84
space manufacturing and assembly - 12
space navigation - 17
space operation emergencies - 16
space plasmas - 90
space platforms - 18
space policy - 84
space power reactors (application) - 20
space probes - 18
space processing of materials - 29
space programs - 12
space radiation - 93
space rescue - 16
space research facilities - 14
space sanitation - 54
space sciences (general) - 88
space shuttle operations - 16
space simulators - 14
space station assembly - 12
space station control - 18
space station design - 18
Space Station Information System - 82
space station maintenance - 12
space stations - 18
space storable propellants - 28
space suits - 54
space technology applications to urban problems - 85
Space Tracking and Data Acquisition Network (STADAN) - 17
space transportation economics - 83
space transportation - 16
space vacuum simulators - 14
space vehicle maintenance - 12
space vehicle manufacturing - 12
space vehicle production - 12
spaceborne astronomy - 89
spaceborne computers - 60
spacecraft aerodynamics (for specific spacecraft see 18 Spacecraft Design, Testing and Performance) - 02
spacecraft antennas - 18
spacecraft auxiliary power sources - 20
spacecraft cabins - 18
spacecraft charging - 18
spacecraft command - 17
spacecraft communications - 17
spacecraft components - 18
spacecraft control (communications) - 17
spacecraft control (design and performance) - 18
spacecraft control computer systems - 19
spacecraft design - 18
spacecraft ditching - 16
spacecraft engine design - 20
spacecraft environmental control - 18
spacecraft external contamination - 18
spacecraft flight simulation - 18
spacecraft flight tests - 18
spacecraft health management - 16
spacecraft hydraulic systems (power) - 20
spacecraft instruments - 19
spacecraft maintenance facilities - 14
spacecraft maintenance - 12
spacecraft manufacturing - 12
spacecraft navigation - 17
spacecraft orbits - 13
spacecraft performance - 18
spacecraft pneumatic systems (power) - 20
spacecraft power systems - 20
spacecraft production facilities - 14
spacecraft production - 12
spacecraft propulsion - 20
spacecraft retrieval - 16
spacecraft simulation - 18
spacecraft simulators - 14
spacecraft sterilization (interior) - 54
spacecraft structures - 18
spacecraft systems monitoring instruments - 19
spacecraft systems - 18
spacecraft testing - 18
spacecraft thermal control - 18
spacecraft tracking - 17
spacecraft trajectories - 13
spacecraft vehicle booster engines - 20
spacelab (design and testing) - 18
spaceport planning - 14
spaceports - 14
space-power reactors (theory) - 73
spark ignition engines (aircraft) - 07
spark ignition engines (non-aircraft) - 37
special vehicles (land, sea, air) (used as bases and for transportation or rescue of astronautics or astronautic-oriented equipment) - 14
spectral analysis instruments - 35
spectral methods (mathematics) - 64
spectrometers - 35
spectrophotometers - 35
spectrophotometry (application) - 25
spectroscopes - 35
spectroscopic analysis (chemistry) - 23
spectroscopic chemical analysis (application) - 25
spectroscopy (astronomy) - 89
speech analysis (aircraft voice communication) - 04
speech analysis (electromagnetic aspects) - 32
speech analysis (spacecraft voice communications) - 17
speech compression (aircraft voice communication) - 04
speech compression (spacecraft voice communications) - 17
speech data compression (communications) - 32
speech recognition - 63
spin recovery - 08
spline functions - 64
spontaneous generation of life - 55
sprays - 34
springs (mechanical) - 37
stability (aircraft) - 08
stability (spacecraft) - 18
stability augmentation (aircraft) - 08
stability augmentation (spacecraft) - 18
stability derivatives (aircraft) - 08
stability derivatives (spacecraft) - 18
stabilization surfaces (aerodynamics) - 02
stabilization surfaces (aircraft) - 08
stabilization surfaces (spacecraft) - 18
stacking sequence (composite materials) - 24
stall indicators - 06
standard model (particle physics) - 77
star trackers (navigation) - 19
star trackers (observation) - 89
stars (astrophysics) - 90
stars (observation) - 89
static stability (aircraft) - 08
static stability (spacecraft) - 18
station keeping - 17
statistical physics - 77
statistical techniques - 65
statistics - 65
stellar evolution - 90
stellar luminosity - 90
stellar magnetic fields - 90
stellar mass accretion - 90
stellar physics - 90
stellar radiation - 93
stellar spectroscopy - 89
stellar systems - 90
stellarators - 75
Stirling cycle engines (aircraft) - 07
Stirling cycle engines (non-aircraft) - 37
stochastic processes - 65
STOL aerodynamics - 02
storage facilities for propellants and cryogenics - 14
storage of propellants and fuels - 28
storm cells - 47
strain gags - 35
stratosphere - 46
stratospheric circulation - 46
stratospheric pollution - 45
stress (physiological effects, human) - 52
stress (psychological effects, human) - 53
stress (structural) - 39
stress analysis - 39
stress corrosion cracking - 26
stress effects of atmospheric flight (physiological, human) - 52
stress effects of space flight (physiological, human) - 52
string theory - 77
strong interactions (field theory) - 77
structural analysis - 39
structural design - 39
structural elements - 39
structural fatigue - 39
structural mechanics - 39
structural testing - 39
structural theory - 39
structural vibration effects - 39
structures test facilities (aircraft) - 09
structures test facilities (space) - 14
subsonic aerodynamics - 02
sun - 92
sunspots - 92
superchargers (aircraft engines) - 07
supercomputers - 60
superconducting materials - 76
superconductivity (applications) - 33
superconductivity (theory) - 76
supercritical airfoils - 02
supercritical wings - 02
supergravity - 77
supernovae (astrophysics) - 90
supernovae (observation) - 89
supersonic aerodynamics - 02
superstring theory - 77
supersymmetry - 77
support facilities (aircraft) - 09
support facilities - 14
support vector machines - 63
surface acoustic wave devices (theory) - 71
surface exploration vehicles - 14
surface hardening of metals - 26
surface properties (composite materials) - 24
surface properties (metallic materials) - 26
surface properties (nonmetallic materials) - 27
surface transportation - 85
surface wave acoustic devices (electronic design) - 33
survival (aircraft operations) - 03
survival (space operations) - 16
swash zone (oceanography) - 48
swingby maneuver - 13
switches - 33
switching circuits - 33
switching theory - 33
symmetry breaking - 77
synchronous satellites - 18
synoptic meteorology - 47
synthetic aperture radar - 32
systems analysis - 66
systems for adverse weather avoidance - 04
systems for collision avoidance - 04
systems for energy conversion (spacecraft) - 20
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