| 1. | More realistic virtual engines - Zoom in the Lab |
| | Now, during the ignition phase the flows and chemical reactions change very quickly, they aren't stationary at all.... |
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| 2. | 50 years of laser research at Onera - Zoom in the Lab |
| | A little later Onera also developed a patented method of real-time measurement of the composition and temperature in the combustion chambers and other reactive environments like plasmas without disturbing the flows or chemical reactions.... |
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| 3. | Assisting combustion with plasma - Zoom in the Lab |
| | Does the plasma work by chemical reactions, by raising the temperature or by hydrodynamic modification of the flows ?... |
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| 4. | 19 janvier, 2009 Micro-turbines, maxi-difficulties - Energy sources for miniature drones - Zoom in the Lab |
| | Additionally, its chemical reaction time (the necessary time for the combustion chemical reaction to take place) is 50 microseconds, ten times shorter than that of the hydrocarbons that are usually used.... However, it must remain as five times greater than the chemical reaction time, without which combustion would be poor.... |
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| 5. | News Releases - December 2006 - Onera |
| | This compound is not expected in sedimentary rock but may result from a " geopolymer " type chemical reaction.... |
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| 6. | SILECS - ONERA ' s Technical Resources for the Simulation of Spatial Environment - ONERA / DESP-EN |
| | Volume phenomena (DSMC method or from background density) : elastic collisions (VHS cross-section) charge exchange and ionisation (neutral module - plasma module) reactive collisions, light emissionSurface phenomena : adsorption, desorption, outgassing elastic bounce or with accomodation, specular or diffusive chemical reactions, erosion by atomic oxygen, sputtering concerning micrometeoroids : ejecta production. |
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| 7. | Deposit through Microwave Plasma Enhanced Chemical Vapour Deposition (MPECVD) - ONERA / DMSM-EN |
| | This reactor allows the deposition of oxides at rates higher than 200 µm / h. In CVD process the chemical reactions take place in the boundary layer near the heated substrate.... Plasma enhancement allows the initiation of chemical reactions far from the sample : the inelastic collisions between energetic electrons and heavy atoms promote the production of gaseous reactive species like atomic oxygen and metal sub oxide.... |
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| 8. | Plasmas for Combustion Control / Abstracts |
| | So the major part of their energy contribute to dissociate gas molecule producing in combustion mixture, radicals which promote chemical reaction in the direction of the ignition or increase burning velocity Due to the short discharge duration ions and neutral molecules temperature are close to ambient.... |
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