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Link to Subject Category
Abelian groups - 67
abiogenesis - 55
ablation cooling - 34
ablation sensors (design and techniques) - 35
ablation sensors (spacecraft) - 19
ablation - 34
ablative materials (composite) - 24
ablative materials (nonmetallic) - 27
absorption of radiation by atoms - 72
accelerated life testing - 38
acceleration effects (biological, animal and plant) - 51
acceleration effects (biological, human) - 52
accelerators (aerospace) - 14
accelerometers - 35
acceptors (solid state) - 76
accidents and emergencies (aircraft) - 03
accidents and emergencies (spacecraft) - 16
acoustic scattering - 71
acoustic theory - 71
acoustics (general) - 71
acoustoelasticity - 39
activation analysis - 72
active communication satellite - 18
active satellite stabilization - 18
adaptive control theory - 63
adhesive joints (structural stability) - 39
adhesives - 27
administration - 81
administrative planning - 81
aerial photography - 43
aeroacoustics - 71
aerobraking - 13
aerodynamic derivatives - 02
aerodynamic flow fields - 02
aerodynamic heating - 02
aerodynamic noise (airframe generated) - 02
aerodynamic noise (general) - 71
aerodynamic noise (propulsion systems) - 07
aerodynamic studies of skin friction - 02
aerodynamic wakes - 02
aerodynamics of protuberances and substructures - 02
aeroelasticity (property) - 05
aeroelasticity (structural flexibility) - 39
aeroelasticity (theory) - 02
aeronautical history - 99
aeronautics - 01
aeronomy - 46
aerosols (atmospheric physics ) - 46
aerosols (pollution aspects) - 45
aerospace agreements - 84
aerospace medicine - 52
aerospike engines - 20
aerothermodynamics - 02
afterburner controls - 07
afterburners (aircraft engines) - 07
air cushion vehicle aerodynamics - 02
air cushion vehicles - 85
air flow separation - 02
air glow - 46
air launched vehicles - 15
air launched weapons (aerodynamics) - 02
air launched weapons (stability) - 08
air navigation - 04
air piracy (incident or safety aspects) - 03
air piracy (legal aspects) - 84
air pollution - 45
air safety - 03
air traffic control - 04
air transport regulations - 84
air transportation - 03
airborne computers - 06
airborne radar displays - 06
airbreathing engines (aircraft) - 07
airbreathing engines (non-aircraft) - 37
aircraft accidents - 03
aircraft aerodynamics - 02
aircraft aging (safety) - 03
aircraft command and control - 04
aircraft communications - 04
aircraft components - 05
aircraft configurations - 05
aircraft control computer systems - 06
aircraft control - 08
aircraft descriptions (types-names-designations) - 05
aircraft design - 05
aircraft development - 05
aircraft ditching - 03
aircraft durability - 03
aircraft emergencies - 03
aircraft engine design - 07
aircraft engine maintenance - 07
aircraft engine performance - 07
aircraft engine simulation - 07
aircraft engine testing - 07
aircraft engines - 07
aircraft evaluation - 05
aircraft flight tests - 05
aircraft fuel systems - 07
aircraft fuels - 28
aircraft ground handling equipment - 09
aircraft health management - 03
aircraft hydraulic systems (power) - 07
aircraft in-flight collision - 03
aircraft instrumentation - 06
aircraft licensing - 03
aircraft maintenance - 01
aircraft manufacturing - 01
aircraft near miss - 03
aircraft operating problems - 03
aircraft performance - 05
aircraft pneumatic systems (power) - 07
aircraft power systems - 07
aircraft production economic - 83
aircraft production - 01
aircraft propellers - 07
aircraft propulsion system components - 07
aircraft propulsion systems - 07
aircraft repair - 01
aircraft safety - 03
aircraft search and rescue operations - 03
aircraft servicing equipment - 09
aircraft simulation - 05
aircraft stability - 08
aircraft structures - 05
aircraft systems monitoring instruments - 06
aircraft testing - 05
aircraft tracking - 04
aircraft trim - 08
aircrew licensing - 03
aircrew training - 03
airfoil aerodynamics - 02
airline economics - 83
airport access - 09
airport lighting - 09
airport noise - 03
airport operations - 03
airport planning - 09
airport security - 03
airports and airways - 09
air-sea interactions - 48
air-sea navigation - 04
airship aerodynamics - 02
airship performance - 05
airspeed indicators - 06
airworthiness - 03
alarm systems (aircraft) - 06
alarm systems (design and techniques) - 35
alarm systems (spacecraft) - 19
algebraic systems - 67
algorithms (computer operations) - 61
algorithms (mathematics) - 64
alkali metal vapors - 25
all weather global position determination - 04
alloy formation (space processing) - 29
alloys - 26
alpha rays (solar) - 92
alpha rays (space) - 93
alpha rays (theory) - 73
alternative energy sources - 44
altimeters (aircraft) - 06
altimeters (spacecraft) - 19
altitude effects (biological, animal and plant) - 51
altitude effects (biological, human) - 52
altitude test facilities - 09
amino acid analysis (extraterrestrial) - 55
amplifiers - 33
anabatic winds - 47
analog computers - 60
analysis of variance - 65
analytical chemistry - 25
analyzing devices (aircraft) - 06
analyzing devices (design and techniques) - 35
analyzing devices (spacecraft) - 19
anemometers (applications) - 47
anemometers (design and techniques) - 35
animal biology - 51
annihilation reactions - 77
anodizing - 26
antenna design - 32
antenna radiation patterns - 32
antenna theory - 32
anthropometry - 52
anticollision devices - 06
antigravity - 70
antimatter - 77
antiparticles - 77
applied mechanics - 31
approach control (aircraft) - 04
appropriations hearings (NASA) - 99
approximation - 64
architecture (computers) - 60
artificial intelligence - 63
artificial satellites - 18
assembly buildings - 14
asteroid belt - 89
asteroids (characteristics and composition) - 91
asteroids (observation) - 89
astrionics - 19
astroballistics - 13
astrobiology - 55
astrochemistry - 90
astrodynamics - 13
astrometry - 89
astronaut health (physical) - 52
astronaut health (psychological) - 53
astronaut training facilities - 14
astronautical history - 99
astronautics - 12
astronavigation - 17
astronomical instruments - 89
astronomical observatory satellites - 18
astronomy - 89
astrophysics - 90
atmospheric analysis (pollution) - 45
atmospheric boundary layer (climatology) - 47
atmospheric boundary layers (atmospheric physics) - 46
atmospheric circulation (atmospheric physics) - 46
atmospheric circulation (meteorology) - 47
atmospheric cloud physics - 47
atmospheric density - 46
atmospheric electricity - 46
atmospheric energy exchanges - 47
atmospheric entry effects - 13
atmospheric interactions - 47
atmospheric optics - 46
atmospheric physics - 46
atmospheric pollution - 45
atmospheric pressure effects (biological, animal and plant) - 51
atmospheric pressure effects (human) - 52
atmospheric radiation - 46
atmospheric sampling (pollution) - 45
atmospheric scattering - 46
atmospheric structure - 46
atmospheric studies (meteorological) - 47
atmospheric studies (physical processes) - 46
atmospheric turbulence - 47
atmospherics - 46
atomic beam measurements - 72
atomic clocks (design and techniques) - 35
atomic collisions - 72
atomic electron properties - 72
atomic energy levels - 72
atomic frequency standards - 72
atomic fuels (space applications) - 72
atomic nuclei - 72
atomic physics - 72
atomic reactions - 72
atomic spectra - 72
atomic structure - 72
atomizers - 34
attitude control (aircraft) - 08
attitude control (spacecraft) - 18
attitude indicators (aircraft) - 06
attitude indicators (design and techniques) - 35
attitude indicators (spacecraft) - 19
attitude thrusters - 20
audio amplifiers - 33
aurora - 46
autogyro aerodynamics - 02
automata theory - 63
automatic control - 63
automatic data processors (ADP) - 60
automatic picture transmission (APT) ground stations - 14
automatic picture transmission (APT) - 17
automatic pilots (aircraft) - 08
automatic pilots (spacecraft) - 18
auxiliary power systems (aircraft) - 07
auxiliary power systems (spacecraft) - 20
auxiliary power units (APU) (aircraft) - 07
auxiliary power units (APU) (spacecraft) - 20
auxiliary systems (mechanical) - 37
aviation psychology - 53
avionics - 06
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