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(Click for frequent words.) 56 ramjet 56 propulsion 54 hypersonic speeds 53 ramjets 52 scramjets 51 ion propulsion 51 cryocooler 51 simulate weightlessness 50 gyrocopters 50 electromagnetic propulsion 49 scramjet engine 49 railgun 49 hypersonic 49 scramjet powered 49 supersonic combustion ramjet 49 hypersonic propulsion 48 breathing supersonic combustion 48 ultrasonics 48 scramjet engines 48 breathing scramjet engine 48 hypersonic flight 48 manned submersibles 48 EMALS 48 ornithopter 48 supersonic 48 fuel tank inerting 47 vomit comet 47 Scramjets 47 scramjet 47 SpaceShip Two 47 VTOL 47 magnetically levitated trains 47 Seaglider 47 ion thrusters 47 fluid dynamics 47 bipropellant 46 closed circuit rebreather 46 hypersonic scramjet 46 RoboSwift 46 VTOL aircraft 46 Lockheed Skunk Works 46 parahydrogen 46 Ion propulsion 46 APKWS II 46 electric propulsion 45 orbital maneuvering 45 matter antimatter annihilation 45 hypersonic missiles 45 optionally manned 45 hypervelocity 45 HIAPER 45 JIMO 45 UUVs 45 micromachine 45 vectored thrust 45 Bernoulli Principle 45 computational fluid dynamics 45 EZ Rocket 45 inertial guidance 45 Space Shuttle Orbiter 45 trimaran hull 45 gaseous hydrogen 45 microscopic bubbles 45 suborbital spacecraft 45 antigravity 44 drogue 44 magnetic levitation trains 44 ramjet propulsion 44 Air Missile AMRAAM 44 compressed nitrogen 44 supersonic combustion 44 SPHERES 44 sparging 44 scramjet propulsion 44 ion thruster 44 hypersonic glider 44 supersonic aircraft 44 Scramjet 44 uncrewed 44 SpaceShip One 44 hypersonic cruise missiles 44 dirigibles 44 vortex generators 44 cryogenic cooling 44 cryogenically cooled 44 laminar flow 44 UUV 44 electric ion propulsion 44 flammable hydrogen 44 solid propellants 44 submersible craft 44 turbojets 44 HyFly 44 superfluid helium 43 airfoils 43 hydrodynamics 43 Vertical Takeoff 43 rigid airships 43 Aegis Weapon System 43 supersonically 43 hypersonic jet 43 subsonic speeds 43 Curiosity rover 43 neutrally buoyant 43 Gibbs Aquada 43 ramjet engine 43 rocket thrusters 43 microbots 43 microgravity environment 43 Weightless Wonder 43 Aeroscraft 43 high altitude airship 43 Swean 43 electron beam welding 43 tokamaks 43 aqualung 43 steam catapults 43 ARCTUS 43 hybrid propulsion 43 Starfighters 43 LFA sonar 43 ballistic trajectory 43 lunar landers 43 turbopumps 43 ionisation 43 mimics photosynthesis 43 hypergolic 43 ultrasonic waves 43 OMS pods 43 Variable Specific 43 exoskeleton 43 ultrashort pulses 43 drogues 43 simulates weightlessness 43 Maglev magnetic levitation 43 defueling 43 piston pumps 43 inerting 43 nanotube membranes 43 nanomotors 43 ducted fan 43 afterburner 43 Boeing P 8A 43 rebreather 43 X #A 43 SkyCar 42 microrobots 42 MQ 4C 42 thruster 42 propulsion systems 42 depressurizes 42 Altair lunar lander 42 carry heavier payloads 42 electromagnetic railgun 42 closed circuit rebreathers 42 mag lev 42 airframe avionics 42 piezoelectrics 42 X #A WaveRider 42 piercing hull 42 Virgin Galactic SpaceShipTwo 42 Martian rovers 42 cryocoolers 42 Autonomous Underwater Vehicles AUVs 42 Dan Durda 42 Virgin Galactic unveils 42 inertial measurement 42 SolarEagle 42 electromagnetics 42 System ARBS 42 hydrofoils 42 NASA Weightless Wonder 42 submersible Alvin 42 exhaust plume 42 Michoud La. 42 Skyray 42 Daniel Tani hooked 42 VASIMR 42 SSME 42 O OREOS 42 SpaceShipTwo SS2 42 parafoil 42 cavitation 42 Manned Maneuvering Unit 42 cyborg insects 42 Suborbital 42 turbojet engines 42 frickin laser beams 42 supercooled liquid 42 HyShot 42 simulated weightlessness 42 supersonic cruise 42 Uninhabited Aerial Vehicle 42 nanorobots 42 deorbiting 42 Titan 4B 42 SpaceX Dragon capsule 42 dexterous robot 42 Liquid nitrogen 42 Thruster 42 MZ 3A 42 LEMV 42 Propulsion Directorate 41 MEMS microelectromechanical systems 41 swim fins 41 autonomous unmanned aerial 41 airfoil 41 dirigible 41 microrobot 41 Propulsion Laboratory 41 Jupiter Icy Moons 41 microjet 41 autonomous rendezvous 41 Bernoulli principle 41 supersonic cruise missiles 41 MARSIS radar 41 SpaceX Dragon 41 HC #J 41 Sikorsky X2 41 telemetry instrumentation 41 VASIMR engine 41 powerhead 41 paddlewheels 41 UDRI 41 aeronautical engineers 41 shuttle orbiter 41 liquid hydrogen LH2 41 Jiaolong 41 mass flowmeters 41 KillerBee 41 aeroshell 41 Lt. Gen. Hideyuki Yoshioka 41 Earth orbiting satellites 41 submarine sonar 41 pusher propeller 41 Weatherbird II 41 astronautical 41 superluminal 41 supercruise 41 DMSP F# 41 Orbital Express 41 Felix Wankel 41 F/A-#E/F aircraft 41 invisibility cloaking 41 thermoelectric cooling 41 Blackswift 41 Otto Lilienthal 41 Next Generation Jammer 41 SOLO TREC 41 orbiting telescopes 41 bathyscaphe 41 microgravity 41 transonic 41 gaseous helium 41 afterburning 41 Weightlessness 41 inerting systems 41 turbojet powered 41 hydrodynamic cavitation 41 supersonic jets 41 Shuttle astronaut 41 pneumatic hydraulic 41 maglev trains 41 femtosecond lasers 41 superhydrophobic surfaces 41 SSMEs 41 physicist Michio Kaku 41 Kevin Kochersberger 41 propellers 41 jetpack 41 Bernitsas 41 Annette von Jouanne 41 conveyorized 41 ramjet scramjet 41 inertial confinement fusion 41 superconducting magnet 41 magnetic levitation 41 RSRMs 41 Mojave Spaceport 41 Richard Gilbrech 41 OptIPuter 41 quantum dot lasers 41 airlock module 41 submarine warfare 41 flagellum 41 batteries ultracapacitors 41 Vomit Comet 41 hypersonic missile 41 plasmons 41 thermobaric bomb 40 gimbaled 40 hydrostatically 40 fume hood 40 hydrofoil 40 propellent 40 MidSTAR 40 Foton M3 40 helicopter rotor blades 40 composite airframe 40 soliton 40 Manned Cloud 40 thermoacoustic 40 suborbital spaceflight 40 dilithium crystals 40 AMPERE 40 V STOL 40 intergalactic spaceship 40 quantum teleportation 40 specially instrumented 40 tail dragger 40 Venusian atmosphere 40 biomimetic 40 quadrocopter 40 microfluidic devices 40 bathysphere 40 Autonomous Underwater Vehicle AUV 40 ramjet powered 40 flapping wings 40 hydraulic actuators 40 unpiloted aircraft 40 Werner Dahm 40 propulsions 40 Navy P 8A 40 Maglev trains 40 offboard 40 compressed air 40 depressurize 40 particle separator 40 gimble 40 Canadarms 40 LOCAD PTS 40 B2 stealth bomber 40 ultrasonic 40 SWIR cameras 40 hydrodynamic 40 Wernher Von Braun 40 NCADE 40 hydraulic pistons 40 shark repellant 40 neutron detector 40 optical diffraction 40 J 2X rocket 40 Pressurized 40 electrically actuated 40 nanomachines 40 vaporisation 40 heavier payloads 40 astronautics 40 Wave Glider 40 NASA Microgravity 40 NASA vomit comet 40 Propulsion 40 KaZaK 40 Pitot tube 40 supercold 40 BioSuit 40 Shenzhou spacecraft 40 propulsion subsystem 40 Seaswarm 40 rebreathers 40 X #A Waverider 40 Pete Siebold 40 weightlessness 40 Paul MacCready 40 micromachines 40 skiing parasailing 40 thrust vectoring 40 retrorockets 40 Kliper 40 Crawler Transporter 40 Dryden Aircraft 40 Sibeck 40 powered paragliders 40 Seth Putterman 40 Fiber lasers 40 nonpolar 40 weightlessly 40 Joel Primack 40 IFM GEOMAR 40 rotor stator 40 destroyers cruisers 40 spaceliner 40 RQ 4N 40 Airborne Laser ABL 40 quadrupole 40 degaussing 40 hovercraft 40 Rutan SpaceShipOne 40 DDC hull 40 Jeffrey Bada 40 polymer electrolyte membrane 40 orbiting observatories 40 magnetron 40 GQM #A Coyote 40 unpowered 40 Supersonic Combustion Ramjet 40 supercritical fluids 40 Computational Fluid Dynamics CFD 40 rocket propulsion 40 microshutters 40 monopropellant 40 Launch Abort System 40 NASA Jet Propulsion Lab 40 artificial blowhole shooting 40 Shuttle Discovery docks 40 manned lunar 40 syntactic foam 40 cryostat 40 Minotaur rocket 40 saltwater 40 hydraulic piston 40 hydrogen 40 Cessna #SP 40 Skunk Works 40 ducted propeller 40 Hydra Spyder 40 jet contrail 39 Skycar ® 39 STOVL variant 39 microgravity experiments 39 laser designators 39 orbital insertion 39 swim bladders 39 MESSENGER MErcury Surface 39 cryogenic liquids 39 superconducting cavities 39 depressurizing 39 Exoskeleton 39 gene sequencing machines 39 Aerial Refueling Boom 39 numerical simulation 39 nondestructive evaluation 39 Hellcat fighter 39 microchannel 39 pitot static 39 whirlybirds 39 Magnetic levitation 39 hydraulics 39 underwing hose 39 twin hulled 39 Aerostats 39 acoustic Doppler 39 hydropneumatic 39 scooters forklifts 39 THAAD radar 39 Wallops Island Va. 39 HTS motors 39 KC #E 39 Citation CJ4 39 bombardier beetle 39 microwave remote sensing 39 robotics 39 MAVs 39 robotic 39 sonar arrays 39 aether 39 quantum cascade lasers 39 Orion Propulsion 39 Wingsuit 39 F 4s 39 Galactic cosmic rays 39 computational fluid dynamics CFD 39 Lockheed Martin LCS 39 De Havilland Comet 39 pneumatics 39 electro optic EO 39 overpressure 39 interplanetary missions 39 liquid oxygen LOX 39 deplete ozone 39 Infrared Astronomy SOFIA 39 radar evading aircraft 39 propulsor 39 aeronautical engineering 39 crewed spacecraft 39 counterpressure 39 propellant tanks 39 telesurgery 39 hypersonics 39 Unmanned Surface 39 ultrasonic vibration 39 miniaturising 39 virtually noiseless 39 SUAS 39 gamma ray detectors 39 Airborne Laser Testbed ALTB 39 Alberto Behar 39 ARGUS IR 39 oxidiser 39 NASA Space Shuttles 39 electromagnetic pulses 39 Attosecond 39 particle acceleration 39 cabin decompression 39 extravehicular activities 39 computer simulations 39 OPT PowerBuoy 39 terahertz waves 39 electrothermal 39 particle beam 39 combustors 39 STOVL mode 39 Laser Avenger 39 orbital mechanics 39 stratospheric airship 39 X #A scramjet 39 Raman spectrometer 39 radar reflector 39 #kt #km h 39 complex overhaul RCOH 39 dynamometers 39 turbojet 39 fiberglass hulls 39 WhiteKnight Two 39 semi permeable 39 gyro stabilized 39 Orion CEV 39 airbrakes 39 Dava Newman 39 IceCube telescope 39 GM EV1 electric 39 modified Boeing #SP 39 SDACS 39 Pilot George Zamka 39 hydraulic 39 EELVs 39 chemical reactants 39 Voith Schneider 39 electrically driven 39 rocketry 39 Internal combustion engines 39 Phantom Works 39 Gossamer Condor 39 Pegasus XL 39 simulated lunar 39 Skyflyer Technology 39 coaxial rotor 39 propeller 39 Particle accelerators 39 AE #D# engines 39 Polmar 39 quantum chromodynamics 39 THAAD interceptors 39 krypton gas 39 catamaran hull 39 landing VTOL 39 thermonuclear bombs 39 highly maneuverable 39 Zeppelin NT 39 Herbig Haro 39 SpaceShip 39 aeroponics 39 lensless imaging 39 physics 39 VTOL UAV 39 USS Seadragon 39 FASTSAT 39 downselect 39 kinetic energy 39 Alfvén waves 39 Jon Karkow 39 gliding silently 39 nozzle 39 ultrafast laser 39 repressurization 39 airships 39 seabasing 39 swooshing sounds 39 hydrodynamic drag 39 Hawaii Undersea 39 absorption chillers 39 CFD modeling 39 #bar [002] 39 HULC 39 manned lunar missions 39 geosynchronous 39 sudden decompression 39 fluidics 39 xenon ion 39 Tactical Tomahawk 39 orbiter robotic arm 39 NetFires 39 drogue refueling 39 Solar TErrestrial RElations Observatory 39 flap actuators 39 cosmic radiation 39 surface combatant 39 P 8A 39 metal hydride 39 degrease 39 RO membrane 39 membrane distillation 39 seven windowed cupola 39 X #B 39 x ray spectroscopy 39 ALMDS 39 JT9D 39 investigates UFOs 39 micro fluidic 39 Agency Darpa 39 Profiler Suite OMPS 39 bow thrusters 39 unmanned rotorcraft 39 undersea glider 39 maritime subsurface 39 macroscopic quantum 39 aerodynamicist 39 Agni V 38 origami masters 38 vertical takeoff 38 nanofluidics 38 STOVL propulsion system 38 KC #Rs 38 predator prey interactions 38 reciprocating piston 38 Caterpillar C# 38 #mm Gatling gun 38 X ray radiography 38 SCUBA gear 38 Main Engine SSME 38 radioisotope thermoelectric generators 38 Academician Fyodorov 38 planetary surfaces 38 hexapod 38 BRAHMOS 38 A#T Hummingbird 38 vortex shedding 38 lightweight composites 38 ballistic missiles cruise missiles 38 scanning electron microscopy 38 liquid coolant 38 Fischer Tropsch process 38 Trip Optimizer 38 nosewheel steering 38 radome 38 sailboats kayaks 38 hydraulic motors 38 plasmasphere 38 JHPSSL 38 reachback 38 lunar rovers 38 UQM ® 38 Lockheed Martin Skunk Works 38 aft compartment 38 nitro methane 38 aircraft Solar Impulse 38 High Altitude Airship 38 Rayleigh scattering 38 X2 TECHNOLOGY 38 LightSail 1 38 vacuum suction 38 Matyjaszewski 38 infrared detector 38 Werner von Braun 38 union SNPL 38 superstrong 38 Divine Vessel 38 reusable suborbital 38 thruster firings 38 bow thruster 38 RTI middleware 38 supersonic speeds 38 EPOXI mission 38 MEMS Inertial 38 Voltec electric 38 supersonic cruising 38 submarine periscopes 38 manpowered 38 unrefueled 38 infrared countermeasures 38 ultrasonic motors 38 Rolls Royce waterjets 38 Molecular Neurobiology Laboratory 38 wormholes 38 Stephan Wrage 38 outerspace 38 motorized gliders 38 UH #J 38 drilling vessel Chikyu 38 autogiro 38 naturally occurring micro organisms 38 unpressurized 38 cosmic ray particles 38 flagellar motor 38 superheating 38 sail catamarans 38 Monorails 38 porous silicon 38 endurance UAV 38 aerofoil 38 catalytic reactions 38 Ole Evinrude 38 PRIMOVE 38 venturi 38 inter planetary 38 Laboratory SSRL 38 variable valve actuation 38 superconducting qubits 38 colder denser 38 ultracold temperatures 38 Airborne Laser 38 eCore 38 JSOW ER 38 extraterrestrial UFOs 38 Benthic Rover 38 CH #K 38 turbofan engine 38 propellant 38 Gamma ray burst 38 injector needle 38 decompression sickness 38 photonics mast 38 Arleigh Burke destroyers 38 Paramagnetic Aggregates 38 MUOS satellite 38 electromagnetic impulses 38 cryogen 38 Heidemarie M. 38 AFRL 38 optical microscopy 38 thermic 38 Ballbot 38 spacecraft SpaceShipTwo 38 leg protheses 38 #mph [003] 38 aquanaut 38 remotely piloted craft 38 Margaret Leinen 38 stubby winged 38 nonlinear optics 38 fiberglass composites 38 inboard outboard 38 Fourier Transform Infrared FTIR 38 lbf thrust 38 Dosidicus gigas 38 robotic Canadarm 38 vertical takeoffs 38 UVIS instrument 38 teleportation 38 REMUS 38 turbine inlet 38 cryogenic propellant 38 laser altimeter 38 microreactors 38 tokamak 38 hypergolic propellants 38 magnetically levitated 38 Compressed air 38 photon torpedo 38 Decompression sickness 38 neutron spectrometer 38 locomotion 38 flightworthy 38 Orion spacecraft 38 recalled Seymour Himmel 38 Bunsen burners 38 Rocketplane XP 38 Reusable Launch Vehicle 38 LiftPort Space Elevator 38 CubeSat 38 Caltech Jet Propulsion 38 propellors 38 shearography 38 Konstantin Tsiolkovsky 38 tardigrades 38 narrowband tactical 38 Red Bull Stratos 38 Eurofighter Typhoon jet 38 Arleigh Burkes 38 electromagnetic flux 38 halon gas 38 Suntory Mermaid II 38 Solid Liquid Mixtures 38 minisub 38 optical tweezers 38 Systems NEX AIQ.H 38 robotic welding 38 electrolyzer 38 Canoes kayaks 38 telerobotics 38 Shallow Subsurface Radar 38 attosecond 38 quark gluon 38 Lt. Comdr 38 Fischer Tropsch 38 midair refueling 38 NPO Lavochkin 38 Recirculating 38 GHMD 38 Dan Werthimer 38 planetary geology 38 reusable hypersonic 38 side scan sonars 38 corona discharge 38 refueling pods 38 pure atomized 38 vapor compression 38 sidestick 38 Intermediate Range Ballistic 38 nondestructive inspection 38 vapor 38 HEL TD 38 Scaled Composites SpaceShipOne 38 antifouling coatings 38 hydrazine thrusters 38 SPY 1F 38 Merlin 1C 38 nosecone 38 Eurocopter X3 38 roadable aircraft 38 ScanEagle unmanned aircraft 38 superconducting qubit 38 galactic cosmic rays 38 weightless 38 diamagnetic 38 superefficient 38 littoral combat 38 Unmanned Combat Air 38 reusable spacecraft 38 OTEC 38 radiator hoses 38 Mudawar 38 aeroelastic 38 Baytubes ® 38 airbrake 38 BioServe Space Technologies 38 maneuvering thrusters 38 teleoperated 38 iRobot Warrior 38 Quadski 38 NASA Stratospheric Observatory 38 adsorber 38 inverted microscope 38 indigenous cryogenic stage 38 unmanned 38 Waverider 38 Interplanetary Kite craft 38 suppressant foam 38 flappable wings 38 terahertz frequencies 38 thermos bottle 38 amphibious warfare 38 flagella 38 Apollo Lunar Module 38 Planck spacecraft 38 JOIDES Resolution 38 Virgin Galactic VSS Enterprise 38 nanofabric 38 Theodore von Karman 38 pneumatically powered 38 spacecrafts 38 SSRL 38 manifold assemblies 38 spaceborne 38 hydraulic rams 38 constructal theory 38 terahertz transistor 38 micropipettes 38 combustor 38 penetrating radars 38 supersonic speed 38 electrolyzing 38 SCUBA diving 38 flapper valves 38 PowerHaul locomotive 38 nontoxic antifreeze 38 macroscale 38 proton decay 38 gliders 38 flapless 38 xenon ions 38 CHIPSat 37 scanning tunneling microscopy STM 37 Douglas Osheroff 37 orifice plates 37 triplane 37 TruViu TM 37 sQuba 37 Symyx microscale parallel 37 supercooling 37 emit electromagnetic waves 37 Lunar Roving Vehicle 37 Harrier Jump Jet 37 thorium reactors 37 Mercury MerCruiser sterndrives 37 MQ 5B Hunter 37 LHDs 37 interferometers 37 Max Faget 37 NFIRE 37 aeronautical engineer 37 Philae lander 37 radar jammers 37 UCAV 37 Chikyu 37 bacterial flagellum 37 USVs 37 manned Shenzhou 37 FlowCAM 37 electrodynamic 37 Infrared Pathfinder Satellite 37 reprocesses spent 37 diaphragm pumps 37 midcourse phase 37 Homayoon Kazerooni 37 MixAlco 37 #km h [003] 37 Atlantis robotic arm 37 MQ 8B 37 Hydrodynamic 37 Superconducting magnets 37 tailbooms extending rearward 37 DiesoLiFT TM 37 tandem rotor 37 Immelmann 37 deorbit 37 watermaker 37 CMOS Photonics technology 37 SpaceshipTwo 37 Resembling miniature 37 nanoscale dimensions 37 Falcon 1e 37 unmanned probes 37 NSWC Dahlgren 37 SurfStream 37 swallowed anthrax spores 37 Cessna Citation X 37 spallation 37 WISE spacecraft 37 long endurance HALE 37 roll-on/roll-off ships 37 MALD 37 Extraterrestrial UFOs 37 sensor arrays 37 Beluga SkySails 37 Trembanis 37 underwing 37 orbital velocity 37 ultrashort laser pulses 37 neuromorphic 37 Neutral Buoyancy Lab 37 Plate tectonics 37 NASA Atmospheric Infrared 37 ballistic trajectories 37 nanoscale patterning 37 LISA Pathfinder 37 AFM cantilever 37 cryogenics 37 PW#A 37 electric trolling motor 37 carbon Kevlar 37 Rogallo 37 spicules 37 impeller blades 37 bilge pump 37 formic acid 37 centrifugal force 37 JSOW 37 rotary piston 37 ultracold molecules 37 unpiloted 37 Shenzhou spaceships 37 superheated gases surrounding 37 deflagration 37 IBEX spacecraft 37 Rick Gilbrech 37 airship 37 unpressurised 37 AGVs 37 Titan IVB 37 fuel inerting 37 bearingless 37 planetary Transits 37 Dyna Soar 37 holographic telepresence 37 enhanced laser desorption 37 inlet manifold 37 exothermic 37 whale blowhole 37 Bessel beam 37 abrasive waterjet cutting 37 Astronautics 37 antifouling 37 David Wettergreen 37 refuel fighter jets 37 airlocks 37 energetic electrons 37 USS Salvor 37 inertial navigation systems 37 inertial 37 sailplane 37 desalinator 37 Water striders 37 examine biota 37 hypersonic engines 37 bulk vitrification 37 PEM fuel 37 supercold liquid hydrogen 37 rudders