초록 ▼

A helicopter has two engines adapted to drive a main sustaining rotor and a plurality of auxiliary propulsion means through a transmission system that is selectively operable to vary the relative speeds of rotation of the sustaining rotor and the auxiliary propulsion means depending upon operating c

A helicopter has two engines adapted to drive a main sustaining rotor and a plurality of auxiliary propulsion means through a transmission system that is selectively operable to vary the relative speeds of rotation of the sustaining rotor and the auxiliary propulsion means depending upon operating conditions.

대표청구항 ▼

A helicopter having two power sources for driving a main sustaining rotor and auxiliary propulsion means, and a transmission system selectively operable to vary the speed of rotation of the sustaining rotor and the auxiliary propulsion means, the transmission system including, for each power source,

A helicopter having two power sources for driving a main sustaining rotor and auxiliary propulsion means, and a transmission system selectively operable to vary the speed of rotation of the sustaining rotor and the auxiliary propulsion means, the transmission system including, for each power source, a layshaft, a first output pinion on each said layshaft connected through a freewheel device to a rotor output gear for driving said main sustaining rotor, a second output pinion on each said layshaft connected through a freewheel device to an auxiliary propulsion output gear for driving said auxiliary propulsion means, and a third output gear on each said layshaft drivingly connected to a common differential gear having a central output shaft connected through an actuatable freewheel clutch to said rotor output gear.