Abstract

The requirements for propulsion system and airframe structural integration are outlined. The deficiencies in current practice are discussed and emphasis is placed on joint airframe and engine company participation in developing a comprehensive integration plan that will result in well defined system interfaces and a high level of risk awareness. Structural analysis programs applicable to propulsion system and airframe integration analysis are discussed including input automation and substructuring capabilities. Examples of propulsion system and airframe math models and typical substructures are presented including static structure and rotating components. The importance of propulsion system loads is discussed. Applications of general purpose structural analysis programs such as NASTRAN to propulsion system structure are given.

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