Related by context. Frequent words. (Click for all words.) 49 pressurization lines 42 rubber gasket 41 shuttle thermal tiles 41 gaseous hydrogen 41 delamination 41 ventilation ducts 41 liquid propellant 40 flyaway foam 40 flammable vapors 40 flammable vapor 40 No.2 reactor 40 spalling 40 plumbing pipes 40 ceiling joists 40 fatigue cracks 40 No.3 reactor 40 electrical conduits 40 horizontal stabilizer 39 resistant tiles 39 liquid oxygen 39 unventilated 39 insulating blanket 39 hairline cracks 39 drip pan 39 fuselage 39 flame trench 39 microscopic cracks 39 brake rotor 39 earth crust 39 subfloor 39 reactor coolant 38 airing cupboard 38 metal grate 38 superheated gases 38 cowling 38 corrosion 38 insulating foam 38 radiator 38 orbiting telescope 38 insulation foam 38 moonlets 37 tank 37 Petermann Glacier 37 masonry walls 37 fiery gases 37 payload fairing 37 highly flammable foam 37 Brookings Doha 37 deformation 37 tank foam insulation 37 boxlike 37 air conditioning ducts 37 Wilkins Ice Shelf 37 drywell 37 Ares IX rocket 37 corrugated iron roof 36 foam 36 shuttle orbiter 36 pinholes 36 jamb 36 LH2 36 Endeavour belly 36 reactor containment 36 thermal tiles 36 heat shield 36 gasket 36 slats 36 windowless rooms 36 liftoff 36 cavity 36 meteoroid 36 elevator shafts 36 orbiter 36 depressurization 36 nosecone 36 thermal blanket 36 inboard 35 sticking accelerator pedal 35 Scar tissue 35 Propane tanks 35 Qu Hongbin chief 35 stricken Fukushima Dai ichi 35 thermal tile 35 grouted 35 condensation 35 orbital debris 35 small subsurface cracks 35 steel joists 35 metal sheeting 35 doorless 35 pressurisation 35 electrical arcing 35 frayed wires 35 hull 35 wheel bearings 35 rotary joint 35 gashed wing 35 soundproofed 35 tank insulating foam 35 vertical fin 35 torpedo tubes