Patent ID: 11891167
Assignee: TEXTRON INNOVATIONS INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 17:
18. The aircraft of claim 14, wherein each two-bladed teetering rotor comprises:
a rotor mast;
a rotor teetering hinge coupled to the rotor mast and a pair of rotor blades, the rotor teetering hinge having a rotor teetering degree of freedom relative to the rotor mast; and
the single-axis flap lock comprising:
at least one pair of diametrically positioned teeter flap lock plates extending from the rotor teetering hinge, spaced apart from the rotor mast of the aircraft; and
a teeter flap lock block positioned about the rotor mast, the teeter flap lock block configured to fit between the teeter flap lock plates and the rotor mast and fit between and contact the teeter flap lock plates in an engaged position, and movable between the engaged position and a disengaged position relative to the teeter flap lock plates, the teeter flap lock enabling flapping of the rotors when the teeter flap lock block is in the disengaged position and disabling flapping of the rotors when the teeter flap lock block in the engaged position.