Tail Spar Spring

摘要

According to one embodiment, an empennage attachment system features an aft attachment mechanism and a forward attachment system. The aft attachment mechanism is configured to be coupled to a tail section of a body of an aircraft and to an empennage proximate to an aft spar of the empennage. The aft attachment mechanism defines a pitch axis such that the aft attachment mechanism allows the empennage to rotate about the pitch axis. The forward attachment system is configured to be coupled to the tail section of the body and to the empennage proximate to a forward spar of the empennage. The forward attachment system is configured to restrict rotation of the empennage about the pitch axis to an allowable range of motion.

主权项

1. A tiltrotor aircraft, comprising:
a body; a wing member; a power train coupled to the body and comprising a power source and a drive shaft in mechanical communication with the power source; a plurality of rotor blades comprising a first rotor blade, a second rotor blade, and a third rotor blade; a rotor system coupled to the wing member and in mechanical communication with the drive shaft, at least part of the rotor system being tiltable between a helicopter mode position and an airplane mode position; an empennage, the empennage comprising an aft spar and a forward spar; an aft attachment mechanism coupled to a tail section of the body and to the empennage proximate to the aft spar, the aft attachment mechanism defining a pitch axis such that the aft attachment mechanism allows the empennage to rotate about the pitch axis; and a forward attachment system coupled to the tail section of the body and to the empennage proximate to the forward spar, the forward attachment system configured to restrict rotation of the empennage about the pitch axis to an allowable range of motion.