What is the function of the total pitch control lever in a helicopter


Release time:

2018-12-05

Referred to as the total pitch rod, it is used to control the variation of the total pitch of rotor blades. The total distance control lever is generally arranged on the left side of the driver's seat and rotates up and down around the support axis. When the driver lifts the lever with his left hand, the automatic tilt device is raised as a whole, and the total pitch of the rotor blades is increased (i.e. the pitch of all blades is increased at the same angle), which increases the rotor tension. Conversely, the tension decreases, thereby controlling the helicopter's lifting and lowering motion. Usually, a rotary throttle control mechanism is set on the handle of the total pitch control lever to adjust the size of the engine throttle, in order to adapt the engine output power to the required power of the rotor after the total pitch change of the rotor blades. Therefore, this control lever is also known as the collective throttle lever.

Referred to as the total pitch rod, it is used to control the variation of the total pitch of rotor blades. The total distance control lever is generally arranged on the left side of the driver's seat and rotates up and down around the support axis. When the driver lifts the lever with his left hand, the automatic tilt device is raised as a whole, and the total pitch of the rotor blades is increased (i.e. the pitch of all blades is increased at the same angle), which increases the rotor tension. Conversely, the tension decreases, thereby controlling the helicopter's lifting and lowering motion. Usually, a rotary throttle control mechanism is set on the handle of the total pitch control lever to adjust the size of the engine throttle, in order to adapt the engine output power to the required power of the rotor after the total pitch change of the rotor blades. Therefore, this control lever is also known as the collective throttle lever.