초록 ▼

A flap lock device for restraining the flapping movement of a main rotor blade assembly on a helicopter. The flap lock device includes an first elongate frame member which extends between a first end and a second end and second elongate frame member which also extends between a first end and a secon

A flap lock device for restraining the flapping movement of a main rotor blade assembly on a helicopter. The flap lock device includes an first elongate frame member which extends between a first end and a second end and second elongate frame member which also extends between a first end and a second end. A pivot connection pivotally connects the first end of the first frame member with the first end of the second frame member. An outwardly facing contact pad is coupled to each of the frame members and adapted for contact with various positions on the helicopter. An actuating device interconnects the first and second frame members and is used to forcibly move the contact pads outwardly and into contact with the helicopter. The flap lock device is installed between the main rotor blade assembly and the main rotor assembly to forcibly maintain the main rotor blade assembly against the droop stop mechanism.

대표청구항 ▼

[ What is claimed is:] [1.] A flap lock device for restraining a main rotor blade assembly on a helicopter, said helicopter having a main upper hub assembly mounted to a main rotor shaft and said main rotor blade assembly being coupled to said main upper hub assembly through a pitch case, said flap

[ What is claimed is:] [1.] A flap lock device for restraining a main rotor blade assembly on a helicopter, said helicopter having a main upper hub assembly mounted to a main rotor shaft and said main rotor blade assembly being coupled to said main upper hub assembly through a pitch case, said flap lock device comprising:a first frame member;a second frame member movably coupled to said first frame member;a first contact pad attached to said first frame member and being adapted for contacting a portion of said main upper hub assembly;a second contact pad attached to said second frame member and being adapted for contacting a portion of said pitch case;an actuator coupled to each of said first frame member and said second frame member and being adapted for moving said first frame member relative to said second frame member and between a retracted position and an extended position; anda locking device for maintaining said first frame member from moving relative to said second frame member;wherein said flap lock device is insertable between said main upper hub assembly and said pitch case when in said retracted position.