This disclosure concerns an air intake (62) for an open rotor engine (50) comprising a propulsive blade array (52,54) having a plurality of blades each having a gas washed surface extending radially outwardly relative to an axis or rotation (56) from a root end to a tip. The intake (62) has first (64) and second (70) circumferential walls extending about the axis (56) of rotation at a location downstream of the propulsive blade array (52,54). The first (64) and second (70) walls are spaced in a radial direction so as to define an annular passage with an opening (72) having a height dimension extending a portion of the way along the propulsive blade array span. The intake (62) further comprises an annular lip (74) arranged about the axis of rotation (56) at a radial distance such that the lip (74) bifurcates the annular passage at a height which substantially separates a boundary layer flow portion of the intake flow from a remainder of the intake flow. The lip (74) may define a collection scroll for foreign object debris and cooling air for the engine.
PROPULSION ENGINE
Antriebsmotor
Moteur de propulsion
2015-10-21
Patent
Elektronische Ressource
Englisch
Online Contents | 2005
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