Concept

Rocket

Related publications (28)

ACTIVE MODEL ROCKET STABILIZATION VIA COLD GAS THRUSTERS

Gautier Marie Pierre Rouaze, Anton Ivanov, Xavier Collaud, Raimondo Pictet, Danylo Malyuta, Mikael Martins Gaspar

This paper describes the development and testing of a reaction control system (RCS) for a model rocket named FALCO-4. The rocket uses cold gas jets to keep itself perfectly vertical at low speeds. We first describe the mechanical layout of FALCO-4 and the ...

2015

A model for the evaluation of the electric field associated with the lightning-triggering rocket wire and its corona

Marcos Rubinstein

In this paper, we analyze the electric field at ground level during the first stage of triggered lightning experiments, i.e., during the rocket ascent and prior to the lightning initiation. At distances of some tens of meters from the triggering wire, the ...

Amer Geophysical Union2015

Mind The Gap

Matthieu Dreyer

The tip leakage vortex (TLV), which develops in the clearance between the blade tip and the casing of axial turbomachines, appears in many industrial applications, such as air transportation, space rockets and hydraulic machines. In the latter, cavitation ...

EPFL2015

Applications of Model Reduction Techniques in Aerospace Combustors

Jan Sickmann Hesthaven

In this paper we consider some practical applications of model reduction methods in unstable gas turbine and rocket combustion. We explore a set of promising methods for reducing computational burden in large scale LES calculations of unsteady turbulent co ...

2014

Ground to Flight Investigations of Hayabusa with Ablation Effects

Pénélope Leyland, Daniel Potter, Nikhil Banerji, Jérémy Raphaël Mora-Monteros, Valentin Marguet, Elise Joy Fahy

Thermal protection systems (TPS) are of extreme importance for the survival of space vehicles especially during superorbital re-entry to Earth. The design of thermal protection systems requires in-depth knowledge of the thermal loading experienced during a ...

2013

Effect of available entrainable material on a viscous gravity current including run-out characteristics and internal flow properties.

Christophe Ancey, Belinda Margaret Bates

It has long been accepted that entrainment of loose material by geophysical gravity flows such as dense snow avalanches and debris flows may change their behaviour significantly. Run-out distances and bulk-flow velocities are notable examples of susceptibl ...

2013

Dynamic Pressures around a Confined Block Impacted by Plunging Aerated High-Velocity Jets

Anton Schleiss, Erik Bollaert, Rafael Xavier Meriade Duarte

The impingement of high-velocity water jets on unlined plunge pools causes scour on the rock foundations. The scour process is the result of complex physical phenomena that happen consecutively. Turbulence and dynamic pressures play a major role, especiall ...

2012

A shadow-mask evaporated pyroMEMS igniter

Nico de Rooij, Danick Briand, David de Koninck

A reliable pyroMEMS igniter was successfully demonstrated based on shadow-mask evaporation of metal directly onto solid propellant drops. In this way, intimate contact between the fuel and the igniter was guaranteed. No visible degradation of the fuel was ...

2011

Long Term Real Trajectory Reuse Through Region Goal Satisfaction

Daniel Thalmann, Pascal Fua, Ronan Boulic, Stéphane Gobron, Junghyun Ahn, Horesh Beny Ben Shitrit, Mirko Raca, Quentin Silvestre

This paper is motivated by the objective of improving the realism of real-time simulated crowds by reducing short term collision avoidance through long term anticipation of pedestrian trajectories. For this aim, we choose to reuse outdoor pedestrian trajec ...

Springer Berlin Heidelberg2011

Concurrency and dynamic protocol update for group communication middleware

Olivier Rütti

The last three decades have seen computers invading our society: computers are now present at work to improve productivity and at home to enlarge the scope of our hobbies and to communicate. Furthermore, computers have been involved in many critical system ...

EPFL2009

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.