Pipe of circular overall cross section, fitted with an airflow rate regulating device
AssigneeAldes Aeraulique
InventorsSerge Buseyne, Camille Lefebvre
Life of this patent
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Abstract
The invention relates to a system and to a method for controlling an aircraft engine starter-generator. The system comprises a transmission box (20) with a fixed gear ratio intended to be mechanically coupled to a turbine shaft (12) of the engine to allow the latter to be started, a gearbox (40) with multiple gear ratios that is mechanically coupled to a pinion of the transmission box, a starter-generator (30) mechanically coupled to a pinion of the gearbox, and means for instigating a change in gear ratio of the gearbox according to the mode of operation of the starter-generator.
Claims10
A pipe of circular overall cross section, fitted with an airflow rate regulating device comprising a circular flap with a diameter substantially corresponding to an inner diameter of the pipe, pivotably mounted around an axis substantially perpendicular to an axis of the pipe, and intended to be actuated via a motor, wherein the airflow rate regulating device includes at least one regulating member including an outer wall having a middle zone of cylindrical overall shape bearing against an inner wall of the pipe, on either side of which first and second zones are positioned withdrawn from said inner wall of the pipe, so as to respectively form first and second lateral airflow channels, the regulating member also having an inner wall with a hollow zone designed so that, when the flap pivots, an edge of the flap is flush with or positioned near the corresponding inner wall.
Dependencies are inferred from the claim text.