Concept
Jet propulsion
Publications associées (100)
A 1.5g SMA actuated Microglider looking for the Light
Dario Floreano, André Guignard, Mirko Kovac, Jean-Daniel Nicoud, Jean-Christophe Zufferey
Summarizing, we present a 1.5g gliding robot that can do phototaxis as a first step towards a novel palm sized self deploying microglider. To reduce the weight, we developed a 0.2g SMA actuator for rudder control that is harmoniously integrated in the airf ...
2007The influence of pool geometry and induced flow patterns in rock scour by high-velocity plunging jets
The dissipation of energy of flood discharges from water releasing structures of dams is often done by plunging jets diffusing in water and impacting on the riverbed downstream. The construction of expensive concrete structures for energy dissipation can b ...
EPFL2006Onboard Flow Visualization in a Pelton Turbine Bucket
François Avellan, Alexandre Perrig
Flow visualizations using endoscopes in a 21-bucket single-injector reduced scale Pelton turbine are performed for 2 operating points. 2 types of visualizations are performed with a CMOS high-speed camera: (i) an onboard visualization of the flow in the bu ...
International Association For Hydraulic Research2006Measurement of the instability threshold for toroidal Alfven eigenmodes in JET plasmas with forward and reversed magnetic field
In this paper we have investigated the effect of reversing the direction of the magnetic field and plasma current, hence the ion del B-drift direction, on the instability threshold of toroidal Alfven eigenmodes with toroidal mode number (n) in the range ve ...
2006INTERACTION OF A CAVITATION BUBBLE WITH A SPHERICAL FREE SURFACE
Mohamed Farhat, Nicolas Dorsaz, Danail Obreschkow, Philipp Kobel, Aurèle De Bosset
The dynamic of a cavitation bubble inside a water drop is investigated in microgravity in order to analyze the interaction between the collapsing bubble and a quasispherical free surface. Tests are carried in the frame of the 42nd parabolic flight campaign ...
2006Exploring a small sawtooth regime in Joint European Torus plasmas with counterinjected neutral beams
During a recent reversed toroidal field (B-T) campaign at the Joint European Torus (JET), experiments were performed to investigate the effect on sawteeth of neutral beam injection (NBI)-driven toroidal plasma rotation counter to the direction of the toroi ...
2006Experimental study of cellular instabilities in non-premixed flames
A systematic experimental study was performed to elucidate the conditions for which cellular patterns of diluted hydrogen diffusion flames near extinction were observed. The formation of cellular instabilities was studied for several burners: jet burners ( ...
EPFL2005Inclusion of aerodynamic non-equilibrium effects in supersonic plasma jet enthalpy probe measurements
Christoph Hollenstein, Malko Gindrat
Low pressure plasma spraying (LPPS) is a thermal spraying technique that has found a niche for low oxidation products. It uses a low pressure environment (i.e:, chamber pressure between 2 and 90 kPa) and yields supersonic plasma jets. The enthalpy probe te ...
2005The new TAE - Alfvén Wave Active Excitation System at JET
Ambrogio Fasoli, Laurent Villard, Duccio Testa, René Chavan, Robert Bertizzolo
After many years of successful operation, the JET saddle coil system will be dismantled during the 2004-2005 shutdown. A new antenna system has been designed and is being constructed to replace it and excite magneto-hydrodynamics modes in the Alfvén freque ...
2004An overview of JET edge modelling activities
Richard Pitts, Marco Wischmeier
A number of codes are in use at JET to model the edge plasma. The range of edge codes is described as is the range of physics issues being explored by these codes. The balance between focussed modelling (that looking at particular physics effects) and inte ...
2003