zero ground speed hover

зависання (вертольота) при нульовій поступальній швидкості

wing-in-ground-effect amphibious craft; ground-effect vehicle (GEV); wing-in-ground-effect (WIG); ground-effect craft; wingship; flarecraft; ekranoplan

zero-zero landing

zero-zero weather

hover capability

static ceiling (the highest altitude at which the helicopter is capable of hovering in standard atmosphere) / hover ceiling

supersonic speed (exceeds speed of sound / Mach 1)

variable-speed with speed control

instantaneous vertical speed indicator / instantaneous vertical-speed indicator (IVSI)

cruise speed / cruising speed

Nr gauge (Nr = speed of rotation) / rotor speed sensor

ground zero (GZ)

activity ground zero

ground zero area

maximum ground speed for water landing with floats inflated

battle-ground / battle ground / battleground

Ground Observer 12 (GO 12 Ground Surveillance Radar, нім. Bodenüberwachungsradar)

vantage ground / vantage-ground

ground-to-ground guided missile

ground-to-ground rocket

ground/air communications / ground-air communication

battlesight zero (BZO)

vision nil (zero)

zero visibility