Patent ID: 6991072

Claim:
A brake device for a helicopter rotor, the device associating a main brake mechanism comprising a disk and manual control for main braking of the rotor and a secondary brake mechanism for secondary braking of the rotor under strong wind, these brake mechanisms being operated by a pilot from the helicopter cockpit by respective main and secondary control means, the main brake mechanism comprising a disk constrained to rotate with the rotor and capable of being held stationary by a pair of jaws opposably mounted on a body to engage opposite sides of the disk, and a main lever hinged to the body to drive the jaws against main return means for returning the jaws into an initial position, wherein the secondary brake mechanism comprises a secondary lever hinged to the body and capable of being actuated against secondary return means in order to drive a presser finger against the main lever to cause the jaws to move correspondingly towards each other so that the secondary lever actuates the main lever to amplify the clamping forces on the disk delivered by the jaws compared with the forces they exert under drive from the main lever alone.