Structural Analyses of a Demonstrator Composite Replacement Panel in a F-111C Cold Proof Load Test

摘要

The Defence Science and Technology Organisation, in collaboration with the Cooperative Research Centre for Advanced Composite Structures, is developing the Composite Replacement Panel Technology (CRPT). The aim of this technology is to replace metallic aircraft structure with that manufactured from advanced composites, thereby reducing support costs and/or increasing capability. The CRPT is being developed through the production of a demonstrator replacement for F-111C Panel 3208, denoted Panel I. It is planned that the design methodology for Panel I (and the analysis described in this report) be validated through the Composite Replacement Panel Strain Survey (CRPSS). In the CRPSS, Panel I will be installed on an F411C aircraft undergoing a Cold Proof Load Test (CPLT). The CPLT is a static ground test conducted at -40 0C that imparts design limit load to critical airframe structure. This report describes the analysis, based on the F-111 Internal Loads Model Revision 1 (December 2002) , and tests that predict positive margins-of-safety and no buckling for Panel I, the fasteners and local sub-structure during CPLT loading. It has been accepted by an Australian Defence Force Authorised Engineering Organisation (AeroStructures trade name) as satisfactorily addressing the structural requirements for the CRPSS.