NASA Scientific and Technical Information (STI) Program
Collect, organize, provide access, and preserve NASA's research and development published results
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Link to Subject Category
radar (theory and techniques) - 32
radar absorbing materials - 32
radar antenna design - 32
radar antennas (theory and techniques) - 32
radar clutter - 32
radar communications systems (aircraft) - 04
radar communications systems (spacecraft) - 17
radar communications systems (theory and techniques) - 32
radar detection (aircraft navigation) - 04
radar detection (communications) - 32
radar detection (earth resources) - 43
radar detection (spacecraft navigation) - 17
radar imagery (aircraft navigation) - 04
radar imagery (communications) - 32
radar imagery (remote sensing) - 43
radar imagery (spacecraft navigation) - 17
radar receivers (theory and techniques) - 32
radar scattering - 32
radar telescope and range finder facilities - 89
radar telescopes - 89
radar tracking systems (aircraft) - 04
radar tracking systems (spacecraft) - 17
radar tracking systems (theory and techniques) - 32
radar transmitters (theory and techniques) - 32
radiation absorption by atoms - 72
radiation belts - 93
radiation chemistry - 25
radiation effects (biological, animal and plant) - 51
radiation effects (human) - 52
radiation effects in semiconductors - 76
radiation effects on spacecraft and components - 18
radiation instruments - 35
radiation safety measures (physiological) - 54
radiative forcing (climate effects) - 47
radiative forcing (pollution aspects) - 45
radiative transfer - 34
radiators (aerospace applications) - 34
radio (theory and techniques) - 32
radio antenna design - 32
radio antennas (theory and techniques) - 32
radio astronomy - 89
radio blackout (loss of communications) - 17
radio communication systems (theory and techniques) - 32
radio communications system (aircraft) - 04
radio communications systems (spacecraft) - 17
radio telescope facilities - 89
radio telescopes - 89
radioactive contamination - 45
radiobiography (human) - 52
radiography (quality control) - 38
radiography - 35
radioisotopes - 73
radomes (design) - 32
radomes (electrical properties) - 33
radomes (nonmetallic materials) - 27
rail accelerators, railguns, launchers (applications) - 14
rail accelerators, railguns, launchers (theory) - 33
rain - 47
ramjet engines (aircraft) - 07
random access memories - 60
random sampling - 65
range and angle measurement (aircraft) - 04
range and angle measurement (spacecraft) - 17
range safety - 14
rapid transit systems - 85
rate of climb indicators - 06
Rayleigh-Ritz method - 64
reaction control systems (spacecraft) - 18
reaction wheels - 37
reactor radiation safety measures (space applications) - 73
reactor theory - 73
read-only memories - 60
reciprocating engines (aircraft) - 07
reciprocating engines (non-aircraft) - 37
reconfigurable hardware - 33
recording devices (aircraft) - 06
recording devices (spacecraft) - 19
recording devices - 35
recovery equipment and vehicles - 14
recovery of spacecraft - 16
rectifiers - 33
reduced gravity effects (biological, animal and plant) - 51
reduced gravity effects (materials) - 29
reduced gravity effects (physiological, human) - 52
redundancy systems - 38
reentry dynamics - 13
reentry launch vehicles - 15
reentry trajectories - 13
reentry vehicle aerodynamics - 02
refraction (optics) - 74
refractory materials - 26
refrigeration - 37
refueling in orbit - 20
regression analysis - 65
regulators (voltage, current) - 33
reinforcing fibers (composite materials) - 24
reinforcing filaments (metallic materials) - 26
reinforcing filaments (nonmetallic) - 27
reliability (procedures and theory) - 38
reliability criteria - 38
remote exploration of planets - 91
remote input equipment - 60
remote launch monitoring facilities - 14
remote manipulator arms (human interface) - 54
remote manipulator arms (robotics) - 63
remote readout equipment - 60
remote sensing of earth resources - 43
remote sensors - 35
remote terminals - 60
remotely piloted vehicles (RPV) - 05
rendezvous guidance - 17
repair facilities (aircraft) - 09
repair facilities (space based, ground based) - 14
reproduction of extraterrestrial life - 55
reprography - 82
research facilities (aircraft) - 09
research facilities (space) - 14
research management - 81
research on metallic materials - 26
research on nonmetallic materials - 27
research planning - 81
residential pollution - 45
resistojet rocket engines - 20
resistors - 33
restraint harness (aircraft) - 03
restraint harness (spacecraft) - 16
retrorockets - 20
reusable vehicles - 15
rheology - 34
riblets (aerodynamics) - 02
Riemann surfaces - 67
rings (structures) - 39
riveted joints - 39
robot control - 63
robot dynamics - 63
robot sensors - 63
robot vision - 63
robotics (hardware) - 37
robotics - 63
rocket aerodynamics (for specific rockets see 15 Launch Vehicles and Space Vehicles) - 02
rocket engine design - 20
rocket engine exhaust plumes - 20
rocket engine noise - 20
rocket engine test pads - 14
rocket engines (aircraft) - 07
rocket engines (spacecraft) - 20
rocket launchers - 15
rocket propellants - 28
rocket sleds - 14
rocket test facilities - 14
rocket throttling systems - 20
rocket/balloon geophysical studies - 46
rockets - 15
Rogallo wing aerodynamics - 02
roll control (aircraft) - 08
roll control (spacecraft) - 18
roll stability (aircraft) - 08
roll stability (spacecraft) - 18
rollers - 37
rotary engines (aircraft) - 07
rotary engines (non-aircraft) - 37
rotary wing aircraft aerodynamics - 02
rotor aerodynamics - 02
rover vehicles - 14
rubber - 27
Runge-Kutta method - 64
runway approach lighting and markers - 09
runway construction - 09
runway lighting - 09
runway safety - 03
runway surfaces and grooving - 09
runways - 09
