Damping structure and applications
AssigneesEurocopter, Ateca
InventorsMarc Francis Vincent Dussac, Philippe Vie, Osmin Delverdier
Life of this patent
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Abstract
A damping structure includes a member defining an internal cavity; an aggregate which includes at least solid bodies in contact and which completely fills the internal cavity; a rigid plate for closing off the internal cavity; and an elastic element which exerts elastic pressure on the rigid plate so as to constrain the aggregate. The member defining the cavity may be elongate with the internal cavity being formed longitudinally inside the member. At least some of said solid bodies may be hollow or solid, compact, made of different materials, of different shapes, and/or of different sizes.
Claims14
A suspension system for a rotary wing aircraft gearbox, said suspension system comprising a number of suspension bars, wherein at least one of said suspension bars comprises a damping structure comprising:
- a member which is rigid and which defines an internal cavity;
- an aggregate which comprises at least solid bodies in contact and which fills said internal cavity;
- and
- a closing device for closing off said internal cavity,
- wherein vibrations of the suspension bars are transmitted to the solid bodies of the aggregate and vibrational energy is dissipated through friction, so that the vibrations are damped quickly and effectively.
Dependencies are inferred from the claim text.