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

Throttle hover - set this value accurately

supersonic speed (exceeds speed of sound / Mach 1)

variable-speed with speed control

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

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

Motor PWM speed separated from PID speed

ground zero (GZ)

activity ground zero

ground zero area

maximum ground speed for water landing with floats inflated

Return ground speed (meters/second)

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)