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AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsNicolas Schmutz, Olivier Vandroux
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There is produced (at 2) air enriched in inert gas, from a source (9) of compressed air internal to the aircraft, and this enriched air is admitted (via 10) into the fuel tank (12). During the cruising phase of the aircraft, there is produced a first fraction of air having a first inert gas content, and this first fraction is admitted into the fuel tank (12) at a first flow rate. Moreover, during the descent phase, there is produced a second fraction of enriched air having a second inert gas content substantially less than the first content, and the second fraction is admitted to the reservoir (12) at a second flow rate substantially greater than the first flow rate.
Process for inerting an aircraft fuel tank, in which air enriched in inert gas is produced from a source of compressed air internal to said aircraft, and said enriched air is admitted into the tank containing the fuel, in which, during at least a cruising phase of a flight of the aircraft, there is produced a first fraction of air having a first inert gas content (T1) and this first fraction is admitted into the fuel tank (12) at a first flow rate, and, during a descent phase (34) of said flight, there is produced a second fraction of enriched air, having a second inert gas content (T2) substantially less than said first content (T1), and the second fraction and ambient air are admitted into the fuel tank at a second flow rate substantially greater than said first flow rate.
Process according to one of the preceding claims, characterized in that there is admitted into the fuel tank said first fraction of enriched air, also during an ascent phase (30) of the flight of the aircraft.
Device for inerting an aircraft fuel tank, comprising means (2) for producing air enriched in inert gas, which can be placed in communication with a source of compressed air (9) internal to the aircraft, these production means (2) being moreover in communication with the tank (12) that receives the fuel, means (14, 18) permitting adjusting the content of inert gas flowing at the outlet of the production means (2), and means (13) for bringing external air to the interior of the fuel tank (12).
Dependencies are inferred from the claim text.