Concept
Hélicoptère
Publications associées (50)
Instability of wind turbine wakes immersed in the atmospheric boundary layer
Fernando Porté Agel, François Gallaire, Giacomo Valerio Iungo, Francesco Viola
In this work a technique capable to investigate the near-wake stability properties of a wind turbine immersed in the atmospheric boundary layer is presented. Specifically, a 2D local spatial stability analysis is developed in order to take into account typ ...
2015Blade sections in streamwise oscillations into reverse flow
A low-Reynolds number rectilinear analog of the retreating-blade problem is considered by computationally and experimentally studying a NACA0012 blade in spanwise oscilla-tion in a free stream. Three-dimensional hybrid RANS-LES simulations with spanwise pe ...
2015Computational Aspects of Optimization-Based Path Following of an Unmanned Helicopter
This paper considers the path following of unmanned helicopters based on dynamic optimization. We assume that the helicopter is equipped with a flight control system which provides an approximation of its closed-loop dynamics. The task at hand is to derive ...
2014Mapping with MAV: Experimental Study on the Contribution of Absolute and Relative Aerial Position Control
This study highlights the benefit of precise aerial position control in the context of mapping using frame-based imagery taken by small UAVs. We execute several flights with a custom Micro Aerial Vehicle (MAV) octocopter over a small calibration field equi ...
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences2014Nonlinear Analysis of a Coaxial Microhelicopter with a Bell Stabilizer Bar
Philippe Müllhaupt, Basile Graf
Nonlinear modeling of coaxial microhelicopters is studied. All equations are derived using a Lagrangian approach and simplified aerodynamics assumptions so that all parameters have a physical meaning; there is no “black box.” The model is constructed with ...
Amer Helicopter Soc Inc2014