Key results from the EU H2020 project CENTRELINE are presented. The research activities undertaken to demonstrate proof of concept (technology readiness level—TRL 3) for so-called propulsive fuselage (PFC) wake-filling propulsion integration discussed. technology application case in wide-body market segment is motivated. developed performance bookkeeping scheme boundary layer ingestion (BLI) re...

This article highlights the significance of rotor dynamics in control design for small-scale aerobatic helicopters and proposes two singularity-free robust attitude-tracking controllers based on available states feedback. The first employs angular velocity flap angle (a variable that is not easy to measure) uses a backstepping technique compensator (BRC) actively suppress disturbance induced tr...

A composite panel containing three stringers and two frames cut from a vacuum-assisted resin transfer molded (VaRTM) stitched fuselage article was tested under uni-axial compression loading. The stringers and frames divided the panel into six bays with two columns of three bays each along the compressive loading direction. The two frames were supported at the ends with pins to restrict the out-...

The noise control characteristics of synchrophasing are investigated using a simplified model of an aircraft fuselage. The analysis presented includes directivity effects of the noise sources and solves the coupled motion between the interior and exterior acoustic fields and the shell vibrational response in closed form. The variation in sound pressure level at various locations inside the shel...

The design of a new L-band antenna for DLR’s airborne synthetic aperture radar system (E-/F-SAR) is presented. Beside operations in L-band new components for a system upgrade were developed. These components are introduced. Special interest of this paper is the development of the dual-polarized L-Band antenna with enhanced bandwidth of 150MHz. The antenna feed network is equipped with 2bit hybr...

Self-Organizing Maps (SOMs) have been used to visualize tradeoffs of Pareto solutions in the objective function space for engineering design obtained by Evolutionary Computation. Furthermore, based on the codebook vectors of cluster-averaged values of respective design variables obtained from the SOM, the design variable space is mapped onto another SOM. The resulting SOM generates clusters of ...