Abstract: In order to reduce the vibration the engine transfers to the fuselage structure, a metal rubber damper is designed and used in the installation of a jet engine. A dynamics model of this metal rubber damper is built and a dynamics simulating analysis of the airplane structure with or without the damper is performed. It is demonstrated that this design introduces considevable damping and greatly reduces vibration response without much effect on structure frequency. After theoretical analysis the metal rubber damper so designed and built is used in a type of airplane. The response of the aircraft with and without the metal rubber damper is measured during the engine trial run on the ground. The results prove the feasibility and validity of the engine installation of metal rubber damper on an aircraft engine.

Key words: metal rubber, damper, engine installation, vibration, dynamics