초록 ▼

A flap actuation system for a helicopter rotor blade. The rotor blade includes a root end, a tip end, a trailing edge and a flap hinged to at least a portion of the trailing edge about a pivot axis. The flap actuation system includes at least one supply line mounted within the rotor blade and extend

A flap actuation system for a helicopter rotor blade. The rotor blade includes a root end, a tip end, a trailing edge and a flap hinged to at least a portion of the trailing edge about a pivot axis. The flap actuation system includes at least one supply line mounted within the rotor blade and extending outward from the root end. The supply line is adapted to channel pressurized fluid. At least one actuator fluidly connected to the supply line. The actuator includes a displacement member and a head member. The head member is engaged with the flap and is adapted to pivot the flap about its pivot axis when pressurized fluid is conveyed through the supply line. In one embodiment of the invention there are two supply lines, each extending outward from the root end and is adapted to channel pressurized fluid. There is at least one actuator fluidly connected to each supply line. The actuator on one of the supply lines is adapted to pivot the flap upward when pressurized, and the actuator on the other supply line is adapted to pivot the flap downward when pressurized.

대표청구항 ▼

[What is claimed is:] [1.]at least one supply line mounted within the rotor blade and extending outward from the root end, the supply line adapted to channel pressurized fluid;a valve attached to the at least one supply line for controlling a flow of fluid along the supply line;a controller adapted

[What is claimed is:] [1.]at least one supply line mounted within the rotor blade and extending outward from the root end, the supply line adapted to channel pressurized fluid;a valve attached to the at least one supply line for controlling a flow of fluid along the supply line;a controller adapted to receive signals indicative of the current state of the flap, the controller providing a signal to the valve for controlling the operational state of the valve; andat least one actuator fluidly connected to the at least one supply line, the actuator having a displacement member and a head member, the head member being engaged with the flap and adapted to pivot the flap about its pivot axis when pressurized fluid is conveyed through the at least one supply line.