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(Click for frequent words.) 79 scramjet engine 73 hypersonic flight 71 scramjets 70 hypersonic speeds 70 supersonic combustion ramjet 69 Scramjet 68 hypersonic 66 X #A 65 supersonic combustion 64 HyShot 64 ramjet 64 scramjet engines 63 hypersonic jet 63 scramjet powered 61 hypersonic scramjet 61 breathing scramjet engine 61 Supersonic Combustion Ramjet 60 breathing supersonic combustion 59 HIAPER 59 scramjet propulsion 58 Scramjets 58 spaceplane 58 spacecraft 58 GSLV Mk III 57 ion propulsion 57 X #B 57 ramjets 57 hypersonic missiles 57 X #A scramjet 57 supersonically 57 Blackswift 57 X #A Waverider 57 SpaceShip Two 57 orbital insertion 57 reusable spacecraft 56 hypersonic missile 56 cryogenic engine 56 supersonic 56 nanosatellites 56 Virgin Atlantic GlobalFlyer 56 electric ion propulsion 56 hypersonic glider 56 lunar explorer 56 EZ Rocket 56 Hyper X 56 X #A WaveRider 56 Stardust capsule 55 SpaceLoft XL 55 unpiloted 55 ramjet engine 55 VASIMR 55 suborbital spacecraft 55 GSLV D3 rocket 55 Airborne Laser Testbed 55 HyFly 55 solid propellants 54 KSLV 1 54 subsonic speeds 54 Minotaur rocket 54 SpaceShipOne 54 GSLV D3 54 drogue parachute 54 Reusable Launch Vehicle 54 SpaceX Falcon 54 orbital velocity 54 NASA MESSENGER spacecraft 54 J 2X engine 54 parabolic trajectory 54 SpaceLoft XL rocket 53 IBEX spacecraft 53 SpaceX Falcon 9 53 stratospheric airship 53 Pegasus XL 53 airship 53 robotic spacecraft 53 Orion spacecraft 53 Merlin 1C 53 flea hop 53 exhaust plume 53 #km h [003] 53 ornithopter 53 winged spacecraft 53 uncrewed 53 RSRMs 53 SSMEs 53 Ares IX rocket 53 sub orbital 52 supersonic aircraft 52 supercruise 52 suborbital rocket 52 exoatmospheric kill vehicle 52 unpiloted aircraft 52 STOVL mode 52 Hayabusa spacecraft 52 PSLV rocket 52 CHIPSat 52 SpaceShipOne rocket 52 turbofans 52 ion thruster 52 Stratospheric Observatory 52 parafoil 52 Variable Specific 52 SPHERES 52 SolarEagle 52 Skycar 52 turbofan engine 52 JIMO 52 #mph [003] 52 ramjet propulsion 52 cryocooler 52 Satellite Launch Vehicle 52 Minotaur IV 52 thruster 52 Technology Demonstrator 52 PSLV C 52 indigenous cryogenic 52 kg payload 52 spacecraft SpaceShipTwo 52 ARCTUS 52 MESSENGER spacecraft 52 Dragon capsule 52 Terrier Orion 52 rocket thrusters 52 geared turbofan engines 52 LISA Pathfinder 52 tilt rotor 52 turbojets 52 Nasa spacecraft 52 NFIRE 51 SpaceShip One 51 Ares rocket 51 propulsion 51 electromagnetic railgun 51 Foton spacecraft 51 H2A rocket 51 Viking Lander 51 Mars Reconnaissance Orbiter MRO 51 nanosatellite 51 rocket propulsion 51 Fregat upper stage 51 SSME 51 orbital rendezvous 51 J 2X 51 infrared telescope 51 lunar orbiter 51 SUAS 51 STOVL propulsion system 51 ion thrusters 51 Martin Jetpack 51 atmospheric reentry 51 transonic 51 airborne observatory 51 APKWS II 51 NCADE 51 VTOL aircraft 51 Martian rovers 51 cryogenic engines 51 quantum teleportation 51 EMALS 51 liquid propellant 51 NIRSpec 51 UUV 51 aircraft Solar Impulse 51 infrared observatory 51 Minotaur IV rocket 51 gaseous hydrogen 51 preset orbit 51 Agni III 51 lbf thrust 51 ramjet powered 51 spacecraft Chandrayaan 1 51 indigenous cryogenic engine 51 liquid propellants 51 Geosynchronous Satellite Launch Vehicle 51 magnetically levitated trains 51 spacecrafts 51 Uninhabited Aerial Vehicle 51 Messenger spacecraft 51 hypersonic propulsion 51 supersonic cruise missile 51 Solar Impulse HB SIA 51 New Horizons spacecraft 51 PSLV C6 51 NASA Stratospheric Observatory 51 vectored thrust 51 Autonomous Rendezvous Technology 51 QinetiQ Zephyr 51 ScanEagle 51 Rutan SpaceShipOne 50 GSAT 5P 50 hypergolic 50 radar altimeter 50 CubeSat 50 Kaveri engine 50 Atlas 2AS 50 Scaled Composites SpaceShipOne 50 GOCE 50 endurance UAV 50 Cassini Huygens 50 Orbital Express 50 A#T 50 Proba 2 50 orbiter 50 unpowered glide 50 SBSS satellite 50 Cygnus spacecraft 50 Foton M2 50 Titan 4B 50 Wallops Island Va. 50 robotic explorer 50 Launch Abort System 50 Orbiter LRO 50 aeroshell 50 GlobalFlyer 50 turbofan 50 Sikorsky X2 50 cryogenic propellants 50 Huygens descent 50 probe Chang'e 50 Aerosonde Mark 50 Infrared Astronomy 50 Stratellite 50 cryogenically cooled 50 Nano Hummingbird 50 intercept ballistic missiles 50 retrorockets 50 Airborne Laser 50 Virgin Galactic SpaceShipTwo 50 pusher propeller 50 DART spacecraft 50 WK2 50 Satellite Launch Vehicle GSLV 50 ST5 50 UAV 50 Infrared Astronomy SOFIA 50 Thrust SSC 50 hypersonic cruise missiles 50 PSLV C9 50 ballistic trajectory 50 INSAT 3D 50 turbojet engine 50 Agni missile 50 turbojet 50 Taepondong 2 50 vertical takeoff 49 ramjet scramjet 49 stratospheric balloon 49 experimental payloads 49 BRAHMOS 49 HB SIA 49 CubeSats 49 O OREOS 49 orbiting observatories 49 monopropellant 49 STSS Demo 49 indigenously developed cryogenic 49 SpaceShipTwo SS2 49 propellant tanks 49 Foton M3 49 BrahMos missile 49 probe Huygens 49 YES2 49 combustor 49 indigenous cryogenic stage 49 mothership WhiteKnightTwo 49 Mike Melvill 49 railgun 49 Aerosonde 49 oxidiser 49 STOVL variant 49 EKV 49 Hypersonics 49 dexterous robot 49 STPSat 49 supersonic speeds 49 NASA Stardust spacecraft 49 Taepo Dong 49 Global Hawk 49 manned suborbital 49 Galileo spacecraft 49 TacSat 49 SpaceX Dragon capsule 49 Geosynchronous Transfer Orbit GTO 49 GPS IIF 49 afterburner 49 CALIPSO 49 PurePower engine core 49 H IIA 49 NanoSail D 49 intercontinental missile 49 LEMV 49 Shenzhou spacecraft 49 Huygens Probe 49 Lt. Gen. Hideyuki Yoshioka 49 communication satellite GSAT 49 impactor spacecraft 49 SpaceshipTwo 49 PW#G engine 49 Jupiter Icy Moons Orbiter 49 Taepodong 2 49 GSLV rocket 49 aerobraking 49 nanomotors 49 VTOL 49 flyby spacecraft 49 supersonic speed 49 microbots 49 Space Launch Vehicle 49 STP S# 49 KSLV 49 Orion capsule 49 BrahMos cruise missile 49 WhiteKnightTwo WK2 49 Geosynchronous 49 endo atmospheric 49 RazakSAT 49 PSLV C# rocket 49 Unmanned Aerial Vehicle UAV 49 Landing CTOL 49 robotic lander 49 Chang'eI 49 Centaur upper 49 Crawler Transporter 49 Zenit 3SL rocket 49 Cloud Aerosol Lidar 49 Nasa 49 Solar TErrestrial RElations Observatory 49 liquefied hydrogen 49 parachutes malfunctioned 49 GPS IIR M 49 RL# engine 49 CloudSat 48 Esrange 48 suborbital spaceships 48 Taurus XL 48 payload 48 SIRTF 48 maneuvering thrusters 48 SMOS mission 48 Jupiter Icy Moons 48 Northrop Grumman Lunar Lander 48 Geo synchronous 48 quadrillion calculations per 48 spaceliner 48 deorbit burn 48 heavier payloads 48 WhiteKnightTwo 48 ROCSAT 2 48 Launch Vehicle EELV 48 Mojave Spaceport 48 commercial spaceline 48 NASA THEMIS 48 Infrared Pathfinder Satellite 48 LTS# 48 electric propulsion 48 supercomputer simulations 48 Launch Vehicle 48 xenon ions 48 geosynchronous satellite 48 Synchronized Position Hold 48 AFRL 48 inertial guidance 48 radio occultation 48 suborbital flight 48 Taurus XL rocket 48 APKWS 48 Rosetta orbiter 48 Unmanned Ground Vehicle 48 planetary Transits 48 ultracold atoms 48 midcourse phase 48 mock warhead 48 JAXA 48 Bloodhound SSC 48 maglev trains 48 Agni V 48 Unmanned Aerial Vehicles 48 UCAV 48 MALE UAV 48 Ariane rocket 48 PW#G 48 comet flyby 48 manned spacecraft 48 supersonic cruise missiles 48 PSLV C# 48 micromachine 48 hypersonics 48 Joel Sitz 48 Interplanetary Internet 48 supercritical fluids 48 Reaction Engines 48 Intermediate Range Ballistic 48 Moon Mineralogy Mapper M3 48 unmanned lunar 48 suborbital trajectory 48 Agni III missile 48 General Electric CF6 48 Breitling Orbiter 48 Suborbital 48 Falcon 1e 48 xenon ion 48 NuSTAR 48 Hayabusa 48 combustors 48 #kt #km h 48 multistage rocket 48 Trishul missile 48 microgravity experiments 48 nanolaser 48 xenon propellant 48 unmanned probes 48 THEMIS satellites 48 ducted fan 48 Worldliner 48 autonomous aerial refueling 48 Interorbital Systems 48 Geared Turbofan 48 Stardust spacecraft 48 gamma ray astronomy 48 gravitational slingshot 48 SpaceShipTwo 48 THEMIS mission 48 LEAP X1C 48 autonomous unmanned aerial 48 geosynchronous orbit 48 BepiColombo 48 X #As 48 Lunar Reconnaissance Orbiter LRO 48 Cargo Launch Vehicle 48 crewed spacecraft 48 simulate weightlessness 48 shuttle orbiter 48 Air Force Evolved Expendable 48 GE Honda HF# 48 hyperspectral imager 48 Jetpod 48 X ray pulses 48 Philae lander 48 Ranging spacecraft 48 Vehicle GSLV 48 Dyna Soar 48 payloads 48 Sanswire TAO 48 MP RTIP 48 Red Bull Stratos 48 VSS Enterprise 48 exo atmospheric 48 hypergolic propellants 48 ion propulsion engines 48 Gravity Probe B 48 Air Missile AMRAAM 48 gyrocopters 48 Kepler spacecraft 48 Earth orbiting satellites 48 geo synchronous 48 lunar lander 48 Zenit 3SL 48 unmanned aerial vehicle 48 interferometers 48 Kliper 48 UltraBattery 48 geosynchronous 48 EPOXI mission 48 DNA methylation biomarkers Epigenomics 48 detect gravitational waves 48 AE #C# 48 lunar landers 47 Dhanush missile 47 Viking landers 47 H IIB 47 ESA ERS 47 Mars landers 47 STOVL 47 Churyumov Gerasimenko 47 HiRISE camera 47 landing VTOL 47 MAVs 47 Maglev trains 47 Canada PW#A engines 47 pulsed laser 47 Observatory SDO 47 subsonic 47 optionally piloted 47 reusable hypersonic 47 Weightless Wonder 47 astro comb 47 twin Voyager spacecraft 47 microrobot 47 spacecraft Cassini 47 irregularly shaped asteroid 47 tokamaks 47 solid propellant 47 proton collisions 47 WhiteKnight Two 47 Solid Rocket Boosters 47 Joel Sitz project 47 Laser COIL 47 Rockot 47 manned spacecraft Shenzhou VI 47 high altitude airship 47 ExoMars rover 47 terahertz frequencies 47 Next Generation Jammer 47 hypervelocity 47 GSLV 47 cryostat 47 Planck spacecraft 47 orbiting telescope 47 STSS satellites 47 lunar missions 47 LRO LCROSS 47 jet propulsion 47 Yinghuo 1 47 Unmanned Combat Air 47 Dream Chaser 47 Shenzhou V spacecraft 47 Parajet Skycar 47 Kosmos 3M rocket 47 Ballbot 47 magnetic spectrometer 47 lunar orbit 47 propellant 47 proton beams 47 bipropellant 47 GeneSat 1 47 MErcury Surface Space ENvironment 47 Thermal Emission Spectrometer 47 suborbital spaceship 47 WGS satellite 47 DEPTHX 47 Australian Synchrotron 47 SaM# 47 NASA Ares IX 47 SpaceLoft 47 Shenzhou capsule 47 NEOSSat 47 massively parallel DNA sequencing 47 GEochemistry 47 unmanned spacecraft 47 situ measurements 47 LightSail 47 GROND 47 deorbiting 47 SumbandilaSat 47 turbopump 47 Super Kamiokande 47 unmanned 47 drogue chute 47 orbit insertion 47 Tactical Laser 47 Sun synchronous orbit 47 MPCV 47 Voyager spacecraft 47 ARGUS IR 47 Xerus 47 director Chuck Dovale 47 Pete Siebold 47 AE #A# 47 thrust vectoring 47 LCROSS 47 LHC experiments 47 interplanetary spacecraft 47 NASA Gamma ray 47 Massive Ordnance Penetrator 47 Ion propulsion 47 STORRM 47 optionally manned 47 AESA radar 47 pneumatic catapult 47 WMAP satellite 47 MARSIS 47 nanomotor 47 Hubble Space Telescope HST 47 Keck Interferometer 47 Solar Sail 47 Horizons spacecraft 47 RQ 4B 47 remotely piloted 47 GSLV rockets 47 unmanned rotorcraft 47 Terrafugia Transition 47 orbiting telescopes 47 turbojet powered 47 PW#A 47 BrahMos 47 Hayabusa probe 47 shuttle Endeavor 47 Lockheed Martin Skunk Works 47 Jules Verne ATV 47 cryogenic propellant 47 Masten Space Systems 47 interplanetary missions 47 parahydrogen 47 lunar rovers 47 supersonic jet 47 Fundamental Aeronautics Program 47 Shenzhou VII 47 Stargazer L 47 RS #A 47 composite payload fairing 47 Sensing Satellite LCROSS 46 orbiting spacecraft 46 Mars Lander 46 Synthetic Aperture Radar 46 Lunar Lander Challenge 46 Geared Turbofan demonstrator 46 suborbital 46 weather satellite TIROS 46 Required Navigation Performance RNP 46 hydrazine 46 Atlas Centaur 46 suborbital space 46 Skynet 5C 46 THEL 46 HEO payload 46 UP Aerospace 46 JP# [001] 46 Unha 2 46 Keck telescopes 46 Japanese Aerospace Exploration 46 unmanned airships 46 lunar probe 46 manned spaceship 46 telescope atop Mauna 46 COSMO SkyMed 46 SpaceX 46 modified Boeing #SP 46 particle beam 46 Brahmos 46 Atlas IIAS 46 microjet 46 payload fairing 46 Martian rover 46 D CIXS 46 deorbit 46 rocket motors 46 Dragon spacecraft 46 shepherding spacecraft 46 Eurofighter Typhoon jet 46 heaviest payloads 46 PSLV C7 46 Recovery Experiment SRE 46 Curiosity rover 46 Manned Maneuvering Unit 46 Oceansat 2 46 linear collider 46 WISE spacecraft 46 MetOp satellite 46 SLBM 46 CTS# [002] 46 GOCE satellite 46 AJ# engine 46 Lunar Rover 46 unpowered 46 turbopumps 46 landing CTOL F 46 Huygens lander 46 Deep Impact probe 46 gamma ray telescope 46 Boundary Layer 46 SpaceShip 46 Japan Hayabusa spacecraft 46 Fregat 46 Mars Pathfinder 46 STEREO spacecraft 46 JDAM ER 46 liquid hydrogen 46 turbofan jet 46 Optus D3 46 MUOS satellite 46 LOCAD PTS 46 tokamak 46 High Altitude Airship 46 unpowered glider 46 microshutters 46 optical tweezers 46 Mars Pathfinder lander 46 Thruster 46 simulated lunar 46 ESA Huygens probe 46 Macroscale Interactions during 46 tilt rotor Osprey 46 vortex generators 46 LRO 46 unmanned aircraft 46 AIRSS 46 GLAST spacecraft 46 Huygens probe 46 DSTO 46 Voyager piloted 46 contra rotating 46 CBERS 46 Starchaser 46 perilune 46 GSLV D2 46 NASA Dryden Flight 46 Chandrayaan II 46 stealth fighter jet 46 quantum cascade lasers 46 Ulysses spacecraft 46 X#B 46 IBM BlueGene supercomputer 46 RENESIS 46 hydrazine toxic 46 Satish Dhawan Space 46 tiltrotor aircraft 46 Galileo satellites 46 SBIRS HEO 46 Airborne Laser Testbed ALTB 46 F #B 46 tandem rotor 46 Wideband Global 46 gamma ray detectors 46 geared turbofan 46 gyroplane 46 HEL TD 46 neutron spectrometer 46 infrared astronomy 46 Gravity Probe 46 eCore 46 windshield wiper maneuver 46 EPOCh 46 GIOVE B 46 closed circuit rebreather 46 unmanned airship 46 Substorms mission 46 Watchkeeper 46 Dnepr rocket 46 attosecond 46 spaceflight 46 Soyuz rocket 46 geo stationary orbit 46 SuitSat 46 PurePower PW#G demonstrator 46 HALE UAV 46 Saturnian moon Titan 46 Hypersonic Flight 46 GPS IIF satellites 46 meteoroid 46 airships 46 NROL 46 Valve CSRV 46 Gibbs Aquada 46 RQ 4A 46 NASA Jet Propulsion Lab 46 jetpack 46 sulphate particles 46 Vehicle OBV 46 Hubble Space telescope 46 electromagnetic propulsion 46 HB SIB 46 Impactor 46 HAMSAT 46 lunar probe Chang'e 46 AMPERE 46 NextSat 46 kinetic warhead 46 suborbital rockets 46 CH #K 46 UAVs 46 ARBS 46 fusion ignition 46 compressed nitrogen 46 comet chaser 46 Satellites GOES 46 Unmanned Aerial Vehicle 46 Ballistic missiles 46 Virgin Galactic 46 Bulava missile 46 THAAD interceptor 46 geared turbofan engine 46 exascale 46 orbital maneuvering 46 oxidizer 46 Stratellite tm 46 Boeing #SP 46 robotic rovers 46 Rolls Royce Merlin 46 WISE telescope 46 spaceward 46 E 8C 45 tiltrotor 45 nEUROn 45 Extraterrestrial UFOs 45 INSAT 4CR 45 KAGUYA 45 Vehicle PSLV 45 MidSTAR 45 robotic geologist 45 Falcon Hypersonic Technology 45 GeneSat 45 NASA 45 propellants 45 geosynchronous satellites 45 orbiting observatory 45 quantum dot lasers 45 Orbital Taurus 45 Nasa Ames 45 Venusian atmosphere 45 U 2S 45 Space Propulsion 45 DubaiSat 1 45 fission reactor 45 Deep Impact mission 45 superconducting magnet 45 LINPACK benchmark 45 AMF JTRS 45 Sejil 45 RLV 45 Randy Voland 45 JCTD 45 Rocketplane XP 45 shuttlecock shaped capsule 45 MetOp 45 Space ENvironment GEochemistry 45 Martian atmosphere 45 Aquasar 45 impactor probe 45 Helios Prototype 45 Voyager probes 45 RISAT 45 Geared Turbofan engine 45 Prithvi II 45 LCA Tejas 45 lander rover 45 magnetron 45 F# engine 45 unrefueled 45 sodium atoms 45 laser altimeter 45 planetary missions 45 Sojourner rover 45 Magnetic Imager HMI 45 ChemCam 45 Skycar ® 45 GHMD 45 Shenzhou V 45 Space Capsule 45 helium atom 45 Dryden Flight Research 45 Cryosat 45 interceptor 45 turbofan engines 45 NIF laser 45 parabolic arcs 45 hydrogen 45 Mars Opportunity rover 45 Unmanned Aircraft System 45 Block 5D 45 highly elliptical orbit 45 optical telescope 45 adaptive optics AO 45 rotary engine 45 Highly Adaptable Satellite 45 Wingsuit 45 Active Electronically Scanned Array 45 thruster rockets 45 thermonuclear fusion 45 indigenously developed missile 45 Hawk AJT 45 Ares IX 45 rover Sojourner 45 geo stationary satellite 45 André Borschberg 45 DF #D 45 Vehicles Directorate 45 WhiteKnightTwo mothership 45 ferry SpaceShipTwo 45 & Whitney Rocketdyne 45 SBIRS GEO 45 GRB #B 45 superfluid helium 45 Adventurer Bertrand Piccard 45 Heron UAV 45 lander 45 X2 TECHNOLOGY 45 PSLV 45 ray Space Telescope 45 geosynchronous satellite launch 45 Honda i VTEC 45 Space Explorations 45 unpressurized 45 ULA Atlas 45 Martian orbit 45 unmanned spaceplane 45 LRO spacecraft 45 Martian lander 45 MISSE 45 FASTSAT 45 EGBU 45 millimeter wavelength 45 Andre Borschberg 45 Laboratory MSL 45 Interior Laboratory GRAIL 45 aerofoil 45 afterburning 45 spaceship 45 Ocean Observatories Initiative 45 dropsondes 45 Huygens mission 45 P#/P# truss 45 XCOR 45 coastal Naro 45 martian atmosphere 45 landing superheated gases 45 Eurocopter X3 45 MQ 8B 45 F/A-#F Super Hornet 45 Desert RATS 45 conventional internal combustion 45 Volna rocket 45 rocket boosters 45 RADARSAT 2 45 Eurostar E# platform 45 Airbus A# airliner 45 TerraSAR X 45 lightweight composites 45 Auto GCAS 45 Missile IRBM 45 tethered aerostat 45 petaflop 45 six wheeled rover 45 numerical simulation 45 GSLV F# 45 Jeff Greason 45 GMTI 45 Giove B 45 HECToR 45 Synthetic Aperture Radar SAR 45 GE# engines 45 particle beams 45 copper impactor 45 ionised gas 45 Scuderi Engine 45 PurePower TM 45 MALD 45 Landing VTOL 45 Rosetta spacecraft 45 Glonass K 45 MESSENGER MErcury Surface 45 Heterodyne Instrument 45 SMOS 45 electron accelerator 45 NMR spectrometer 45 NASA Ames 45 nosecone 45 interstellar distances 45 supersonic cruise 45 turbofan powered 45 F #I 45 TanDEM X 45 intercontinental ballistic missiles ICBMs 45 AEHF satellite 45 chromatographic separations 45 HCCI engine 45 Fermi Telescope 45 remote sensing satellite Resourcesat 45 unstowed 45 Sounding Rocket 45 Geared Turbofan TM 45 electro optic modulator 45 Silver Dart 45 Jiaolong 45 General Electric GEnx 45 GE CF6 engines 45 Vertical Landing STOVL 45 quadrillion calculations 45 cryogenic cooling 45 Eurojet EJ# 45 AMRAAM 45 HERTI 45 ATLAS detector 45 thermobaric bomb 45 UASs 45 Puma AE 45 terahertz frequency 45 Mobion 45 photon beam 45 Substorms 45 Autosub 45 Regolith 45 geo synchronous orbit 45 propellant loading 45 cryocoolers 45 long endurance HALE 45 inertial confinement fusion 45 OSIRIS REx 45 autothrottle 45 Mercury Redstone 45 JCSAT 9 45 radioisotope thermoelectric generators 45 Helios 2B 45 UKIRT 45 Gossamer Condor 45 autonomous robotic 45 Earth orbit LEO 45 THAAD missile 45 Ghauri missile 45 NASA Orbiting Carbon