Concept

Propergol

Publications associées (34)

A SHADOW MASK-EVAPORATED TOPSIDE PYROMEMS IGNITER

Nico de Rooij, Danick Briand, David de Koninck

A shadow mask-evaporated pyroMEMS igniter is presented. The metallization was successfully carried out without ignition or any visible degradation of the propellant charge during evaporation. Directly depositing the Joule-heating igniter onto the propellan ...

2010

Development of MEMS based Electric Propulsion

Herbert Shea

In recent years, there has been a large increase in the number of small satellites being designed, built and launched. Due to resource constraints, these spacecraft have not generally included any propulsion capability, and this has severely limited missio ...

2010

PYROMEMS IGNITER BASED ON A TEMPERATURE GRADIENT: CONCEPT, FABRICATION AND CHARACTERIZATION

Nico de Rooij, Danick Briand, David de Koninck

A pyroMEMS igniter with increased combustion reliability is presented. The igniter consisted of a thin-film platinum Joule heater fabricated on a borosilicate glass substrate. Two different igniter layouts (meandering and annular) and three different binde ...

2009

Future thruster application: combination of numerical simulation of ECR zone and plasma X-ray Bremsstrahlung measurement of the SWISSCASE ECR ion source

Herbert Shea, Peter Wurz, Michael Bodendorfer, Kathrin Altwegg

We present the combination of the numerical 3D magnetic field simulation of SWISSCASE, the new 10 GHz ECR ion source at the University of Bern in Switzerland, and the experimental X-ray Bremsstrahlung measurement of the same ion source, to determine the ho ...

2009

Performance of a micro-fabricated Colloid thruster system

Herbert Shea, Renato Krpoun

In order to fully characterize the performance of the colloid thruster system the electrospray (ES) beam must itself be fully characterized. This may be achieved by measuring various properties such as flow rate, current, droplet/ion charge to mass ratio a ...

2009

The impact of large ELMs on JET

Barbora Bruant Gulejová, Richard Pitts, Gilles Arnoux, János Márki

To ensure sufficient divertor target lifetime, the loss in plasma stored energy due to ELMs in ITER should be restricted to Delta W-ELM

2009

The impact of large ELMs on JET

Richard Pitts, Gilles Arnoux, János Márki

To ensure sufficient divertor target lifetime, the loss in plasma stored energy due to ELMs in ITER should be restricted to Delta W-ELM

Elsevier2009

Large Deformation Balloon Micro-Actuator Based on Pyrotechnics on Chip

Nico de Rooij, Danick Briand, Herbert Shea, Samuel Rosset

This communication presents the modeling and the first demonstration of very large deformation balloon actuators based on pyrotechnics on chip. The gas and pressure generated by the combustion of a solid propellant stored in a micromachined cavity lead to ...

IEEE2008

Onset Voltage Modeling of Micromachined Colloid Thrusters

Herbert Shea, Renato Krpoun

The onset voltage of a colloid thruster is an important parameter in the design of micromachined thrusters. Because dimensions in MEMS thrusters are in the range of several tens of micrometers and because extractor electrodes can be only 5 μm from the capi ...

2008

ELM-wall interaction on JET and ITER

Richard Pitts

Significant interaction of ELM filaments with the vessel wall is now observed on JET by several diagnostics. To interpret the experimental data, a model of ELM-filament evolution was developed, with the radial velocity taken from experiment and the decay o ...

2007

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