Fluid torque-restraint system with optimized fluid expansion

摘要

A torque-restraint mounting system for connecting an aircraft engine (30) to a structure (36) including at least two hydraulic mountings and at least one other resilient mounting (34). At least two of the hydraulic mountings (38,40) are fluidicly interconnected via a fluid filled conduit. This allows for the torque to be reacted between the aircraft engine and the structure by placing the fluid in compression. The relative torque-induced displacement occurring between the aircraft engine and the structure for any specific operating condition is counteracted by tuning the amount or volume of fluid within the torque-restraint system, or by tuning the coefficient of thermal expansion of the fluid. Thus, as the torque-restraint mounting system heats up, the aircraft engine will change rotational position such that its room temperature untorqued orientation can be maintained. This can have significant benefits in terms of increasing service life of the engine mounting system.