A drainage mast (13) configured with a cross section having a decreasing area from its entry section (15) to be attached in the bottom zone of the compartment (11) to its outlet section. The entry section and outlet section each has two perpendicular axes of symmetry (21, 23, 25, 27) of different length. The outlet section (17) is disposed in a plane forming an angle (.beta.) between 60° and 120° with the plane of the entry section, improving the drainage mast priming because the airflow contributes positively to it having the outlet section in that position. The mast is characterized in that the ratio between the shorter axis (27) and the longer axis (25) of the outlet section is between 0.2 and 0.6, the longer axis of the outlet section being parallel to the plane of the entry section and its projection onto said plane being perpendicular to the longer axis (21) of the entry section to have the draining mast operatively primed.
Un mât de drainage (13) configuré avec une section transversale ayant une zone diminuant à partir de sa section dentrée (15) qui doit être fixée dans la zone inférieure du compartiment (11) à sa section de sortie est décrit. La section dentrée et la section de sortie ont chacune deux axes de symétrie perpendiculaires (21, 23, 25, 27) de différentes longueurs. La section de sortie (17) est disposée dans un plan formant un angle (.beta.) entre 60 degrés et 120 degrés avec le plan de la section dentrée, améliorant lamorçage du mât de drainage, car lécoulement dair y contribue positivement en ayant la section de sortie dans cette position. Le mât est caractérisé en ce que le rapport entre laxe le plus court (27) et laxe le plus long (25) de la section de sortie se situe entre 0,2 et 0,6, laxe le plus long de la section de sortie étant parallèle au plan de la section dentrée et sa projection sur ledit plan étant perpendicualire à laxe plus long (21) de la section dentrée pour amorcer le mât de drainage fonctionnellement.
DRAINAGE MAST OF THE COMPARTMENT OF AN AIRCRAFT SUBJECTED TO A NEGATIVE PRESSURE
MAT DE PURGE DE COMPARTIMENT D'UN AERONEF SOUMIS A UNE PRESSION NEGATIVE
2021-08-03
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F04F PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED , Pumpen von Arbeitsfluiden durch unmittelbare Berührung mit einem anderen Arbeitsfluid oder durch Ausnutzung der Trägheit des zu pumpenden Arbeitsfluids |
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