A Comprehensive Load Process at the DLR – Definition, Analysis, and Experimental Evaluation


W. R. Krüger, P. D. Ciampa, M. Geier, T. Kier, T. Klimmek, D. Kohlgrüber, P. Ohme, K. Risse, J. Schwinn (German Aerospace Center, DLR)

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The determination of loads acting on the aircraft is one of the main tasks during aircraft development. The knowledge of loads is important for aircraft design, e.g., for the sizing of the airframe structure, as well as for certification. The definition of realistic load assumptions is important, as well as the generation of loads from simulation and experiment. The DLR is involved in a large number of aircraft design activities, and operates a fleet of research aircraft; thus, the DLR requires in-depth expertise for the definition and the determination of relevant and crucial load cases.

The aim of the iLOADS project is the development of an internal DLR load process, comprising expertise from various DLR institutes. The goal of the process is to strengthen the assessment capabilities of the DLR with respect to the influence of loads on new aircraft configurations, and to support certification capabilities for the DLR aircraft fleet. The load process is investigated with regard to the inluence of various analysis approaches on aircraft structural design, and it is subject to verification and validation on different aircraft configurations.

The paper will give an overview of the background of the iLOADS project, as well as of the work performed in the project. The definition of the load process, as well as the implementations