free flight

вільний політ (з непрацюючим / вимкненим двигуном, не на прив'язі); ширяння; пасивний політ; автономний політ; політ за інерцією; некерований політ

accident-free flying / mishap-free flying

mishap-free flying / accident-free flying

anti-aircraft free-flight rocket

free flight rocket

free-flight aerial rocket

free-flight phase

free-flight projectile range

free-rolling flight

free-flight tunnel

free-flight wind tunnel

hypersonic free flight aerodynamic facility

accident-free flight

tunnel free-flight model testing

free flight test

free flight wind tunnel

flight restriction zone / flight restricted zone (FRZ)

contact-free war

contamination-free

free fall air drop

free naval control of shipping

nuclear-free zone

toxic free area