external ballistics

transitional ballistics / intermediate ballistics

interior ballistics (internal ballistics)

exterior / external ballistics

ballistics

internal ballistics

booster ballistics

interior ballistics

external blast warhead

external circumstances

external communications

external dimension

external espionage

external interference

external military threat

external ordnance

external power

external stores

external threat

NATO external adaptation

weight of external stores

modified external configuration

external aerodynamic drag

external hammer

external operations planning

external inspection

supersonic external-compression inlet duct

external chord of a concavе-convex or flat-convex profile

external electrical power system

external force

external fuel tank

external fuel tank filler-cap

external fuel tank filler-neck