University of Stuttgart

About: University of Stuttgart is a education organization based out in Stuttgart, Germany. It is known for research contribution in the topics: Laser & Finite element method. The organization has 27715 authors who have published 56370 publications receiving 1363382 citations. The organization is also known as: Universität Stuttgart.

Modeling and Simulation of Aerospace Vehicle Dynamics

Abstract: Overview Mathematical Concepts in Modeling Frames and Coordinate Systems Kinematics of Translation and Rotation Quatrenions Translational Dynamics Attitude Dynamics Perturbation Equations of Steady and Unsteady Flight Three-Degree-of-Freedom Simulation Turbo-Ramjet Propulsion Five-Degree-of-Freedom Simulation Proportional Navigation Gimbaled Seekers GPS Six-Degree-of-Freedom Simulation Oblate Earth Model Aerodynamic Modeling Autopilots INS Modeling Monte Carlo Analysis Turbulence Modeling Cockpit Simulators Hardware-In-The-Loop Facilities Wargaming Real-Time Applications Appendix A: Matrices Appendix B: CADAC Primer Appendix C. Aerospace Simulations in C++ Appendix D. Analytical Foundation of Tensor Flight Dynamics.

Twenty-three unsolved problems in hydrology (UPH)–a community perspective

Abstract: This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-based understanding of hydrological variability and causality at all space and time scales. Increased attention to environmental change drives a new emphasis on understanding how change propagates across interfaces within the hydrological system and across disciplinary boundaries. In particular, the expansion of the human footprint raises a new set of questions related to human interactions with nature and water cycle feedbacks in the context of complex water management problems. We hope that this reflection and synthesis of the 23 unsolved problems in hydrology will help guide research efforts for some years to come.