F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04D—NON-POSITIVE-DISPLACEMENT PUMPS
F04D19/00—Axial-flow pumps
F04D19/02—Multi-stage pumps
F04D19/022—Multi-stage pumps with concentric rows of vanes
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T50/00—Aeronautics or air transport
Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
Engineering & Computer Science
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Mechanical Engineering
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General Engineering & Computer Science
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Structures Of Non-Positive Displacement Pumps
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Helice non carenee de turbomachine d'aeronef presentant des pieds de pales refroidis par des conduits d'air de refroidissement traversant les pales
Recepteur de turbomachine d'aeronef a doublet d'helices contrarotatives non carenees, comprenant une turbine libre exterieure a maintien renforce
Agencement pour turbomachine d'aeronef à lubrification ameliorée, l'agencement comprenant un arbre couplé en rotation à un élément suiveur, par des cannelures