By a News Reporter-Staff News Editor at Journal of Technology -- New research on Control Engineering is the subject of a report. According to news reporting out of Stuttgart, Germany, by VerticalNews editors, research stated, "This paper describes the analytical development of a model representing a hingeless helicopter rotor equipped with trailing-edge flaps. The objective of the model is to provide an analytical tool that can be used to investigate major trends when specific physical parameters are changed, as well as to serve for the definition of parametric uncertainties in robustness analysis."
Our news journalists obtained a quote from the research from the University of Stuttgart, "The derivation follows a Lagrangian approach and includes the blade lagging, flapping, and torsional degrees of freedom. The aerodynamics of the blades is modeled using the thin-airfoil lifting-line theory and accounts for changes induced by the trailing-edge flaps on aerodynamic coefficients. The model is suited to cope with low-frequency dynamics such as lead-lag dynamics or rotor-blade tracking and balancing. It is validated against a Finite Element Method numerical model of the EC145 active hingeless rotor and against flight-test data provided by an EC145 demonstrator, both featuring trailing-edge flaps."
According to the news editors, the research concluded: "The model shows great potential in representing accurately the aforementioned physical phenomena and provides a basis for studying the effects of physically meaningful parameters."
For more information on this research see: Derivation and Validation of a Helicopter Rotor Model with Trailing-Edge Flaps. Journal of Guidance Control and Dynamics, 2013;36(5):1375-1387. Journal of Guidance Control and Dynamics can be contacted at: Amer Inst Aeronautics Astronautics, 1801 Alexander Bell Drive, Ste 500, Reston, VA 22091-4344, USA.
Our news journalists report that additional information may be obtained by contacting J.B. Maurice, University of Stuttgart, Inst Flight Mech & Control, D-70569 Stuttgart, Germany. Additional authors for this research include F.A. King and W. Fichter.
Keywords for this news article include: Europe, Germany, Stuttgart, Control Engineering
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