Related by context. Frequent words. (Click for all words.) 63 combustion chamber 63 venturi 62 impeller 61 combustion 59 heat exchanger 59 combustion chambers 58 superheated steam 57 oxidizer 57 degassing 57 heat exchangers 57 condenser 56 laminar flow 56 compressor 56 impellers 55 syngas 55 overpressure 55 gasifier 55 exhaust gases 55 cavitation 55 supercritical 55 ducted 55 gaseous hydrogen 55 condensers 54 fuel injector 54 gas recirculation 53 sorbents 53 microchannels 53 autoclave 53 electrolyzer 53 evaporator 53 nozzle 53 airfoil 53 thruster 52 reactants 52 pyrolysis 52 actuator 52 toroidal 52 SOFC 52 coolant 52 hydronic 52 nozzles 52 flue gas 52 steam boilers 51 spray nozzles 51 solid propellant 51 recirculation 51 compressors 51 turbofan 51 flowmeter 51 turbine 51 preheating 51 adsorbent 51 sorbent 51 epitaxy 51 rotor 51 desorption 51 vapor 51 compressed air 51 potassium hydroxide 50 spark ignition 50 magnetic flux 50 vacuum furnace 50 piston 50 evaporative 50 #KW [001] 50 hydraulic pump 50 thermoelectric materials 50 steam generator 50 oxidant 50 stator 50 propellant 50 1kW 50 turbine engines 50 conduction cooled 50 thermally 50 waveguide 50 flue gases 50 PVDF 50 hydride 50 uncooled 50 fluoropolymer 49 submicron 49 steam turbine 49 intake valve 49 scramjet 49 injector 49 vaporization 49 exhaust valves 49 heatpipes 49 silane 49 refrigerant 49 activated sludge 49 resonator 49 PTFE 49 temperature gradient 49 capacitor 49 electrically heated 49 #.degree [001] 49 propulsion 49 glycol 49 fuel injectors