Hydroelastic damper, and an aircraft

A hydroelastic damper comprising at least one resilient assembly, the at least one resilient assembly including a first resilient assembly, the first resilient assembly comprising a first inner strength member that is engaged at least in part in a first outer strength member, the first inner strength member and the first outer strength member being movable relative to each other at least in translation along a longitudinal axis, the first resilient assembly comprising a first resilient member secured to the first outer strength member and to the first inner strength member so as to provide resilient return of the first outer strength member and of the first inner strength member towards a rest position, the first resilient member extending radially between the first outer strength member and the first inner strength member, the hydroelastic damper comprising at least one hydraulic assembly provided with a first hydraulic chamber and a second hydraulic chamber in communication with each other via at least one connection provided in a first wall of the hydraulic assembly, a fluid being arranged in the first hydraulic chamber and in the second hydraulic chamber, wherein the hydroelastic damper includes a first floating piston that is movable at least in translation along the longitudinal axis relative to the first inner strength member and to the first outer strength member, the first hydraulic chamber having a volume that is variable and that is defined at least by the first floating piston and the first wall, the first floating piston hydraulically isolating the first resilient member from the fluid.