This book provides the latest achievements of numerical methods and experimental means developed and demonstrated by the DLR researchers for the CleanSky 2 LPA Cross Capability Demonstrator (XDC). These developments have been made in order to establish design processes and tools for the prediction, assessment, and measurement of the integration of future propulsion systems for large passenger aircrafts. The XDC thus provided high-fidelity CFD and CAA tools as well as further developed prediction tools for noise and aero-elastics and advanced testing means. For each of the methods a short introduction is given and their applicability is described using examples from the project helping to find the right method supporting future design and integration work.
Introduction.- The XDC - an Overview on the CleanSky 2 Demonstrator on Common Numerical Methods and Experimental Means.- Numerical Methods.- Hybrid wing body as a low-noise aircraft from a multidisciplinary point of view.- Fast prediction of fan broadband noise with an analytical aerodynamic model suited for transonic rotor blades.- Design and Integration of UHBR Propulsion Systems - An Overview of DLR Activities within the Clean Sky 2 ASPIRE and SA²FIR Projects.- Structural Design of a Generic High Bypass Ratio Fan.- Parametric Structural Modelling for Aeroelastic and Aeroacoustic Analyses of an Aircraft Fuselage.- Flutter Assessment of a Passenger Aircraft with Standard and UHBR Engines.- Experimental Means.- Temperature-Sensitive Paint Method for the Investigation of Stationary Crossflow Instability Induced Boundary Layer Transition.- Improving source localization with SODIX for far-field measurements in static engine noise tests.- Experimental Vibroacoustic Characterization of an A320 Wing Utilizing a Controlled Shaker System for Artificial Engine-Vibration Excitation.- Full Scale Particle Image Velocimetry in Aircraft Related Flows Under Open-Air Conditions.- 3D Lagrangian Particle Tracking with Shake-The-Box Applied to Large-Volume Measurements.
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