A turbomachine including at least a first rotary assembly with a first
shaft, a stator, and bearings secured to the stator and suitable for
supporting the first shaft, one of the bearings being capable of giving
way when an unbalance occurs in the first rotary assembly. The
turbomachine further comprising brake arrangement for braking the first
shaft when the unbalance occurs, and bond arrangement acting at the end
of braking to bond a portion of the first shaft to a surrounding portion
of the turbomachine. The turbomachine is intended to be used mainly in
the field of aviation, and more particularly as an airplane turbojet.