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US 9,429,073 B2Granted
Hyperstatic truss comprising connecting rods
AssigneeSnecma
InventorsFrancois Robert Bellabal, Thomas Alain Christian Vincent
Life of this patent
Estimating the term…
Abstract
A hyperstatic truss including connecting rods, used for suspension of a first ring, forming part of an engine case, inside a second ring concentric to the first ring, the connecting rods being secured at one end to the first ring and at the other end to the second ring. The tensile stiffness of the connecting rods is greater than the compressive stiffness thereof. The truss for example can be used for suspension of a ducted-fan turbine engine with an elongate bypass duct.
Claims11
A hyperstatic truss comprising:
- connecting rods applied to suspending a first ring, that forms part of an engine casing, inside a second ring concentric with the first ring, the connecting rods being secured by a first end to the first ring and by a second end to the second ring,
- wherein a tensile strength of the connecting rods is higher than a compressive strength of the connecting rods, said connecting rods comprising a set of one or more parts configured to transmit compressive and tensile loads between the ends of said connecting rods, and one or more other parts configured to cooperate with at least one part of said set of parts to transmit only tensile loads between the first a second ends of said connecting rods.
A hyperstatic truss comprising:
- connecting rods applied to suspending a first ring, that forms part of an engine casing, inside a second ring concentric with the first ring, the connecting rods being secured by a first end to the first ring and by a second end to the second ring,
- wherein a tensile strength of the connecting rods is higher than a compressive strength of the connecting rods, wherein the connecting rods include an internal rod and a shroud surrounding the internal rod, the internal rod working in compression and in tension, and the shroud working only in tension, and
- wherein a first end of the shroud is secured to the internal rod, and a second end of the shroud includes a bearing surface which abuts a bearing surface provided on the internal rod when tension is applied to the internal rod such that tensile forces are transmitted between the first and second ends of the connecting rods by the internal rod and the shroud.
Dependencies are inferred from the claim text.