головний редуктор
main rotor transmission / main gear box
main-rotor head / main-rotor hub
main-rotor hub / main-rotor head
transmission / gear box
rotor (system) gear box
tail rotor gear box
main gear box oil temperature indicator
gear reduction transmission
helical gear transmission
lateral dual rotor system / side-by-side rotor helicopter
main transmission oil temperature gauge
rotor gear pump
gearbox / gear box
aircraft accessory gear box
engine accessory gear box
intermediate gear box
intermediate reduction gear box
aft main rotor
main rotor brake
main rotor hub
blade tip light / main-rotor blade tip light
five-blade main rotor
forward main rotor
main rotor noise
main-rotor (hydraulic) collective pitch actuator
main-rotor axis
main-rotor blade
main-rotor blade durability
main-rotor blade tip light blade tip light
main-rotor brake
main-rotor collective pitch control rod
main-rotor diameter