Patent ID: 9340295
Filing Date: 2016-05-17
CPC Classification: B01D,B26F,B64D,Y10T

Claim Text:
1. An aircraft auxiliary power unit assembly comprising: an auxiliary power unit configured to be arranged within a cavity established by an aircraft skin; an inlet duct configured to be secured within an opening of the aircraft skin, the inlet duct configured to communicate a flow of air to an inlet housing of the auxiliary power unit; and an inlet duct screen secured relative to the inlet duct, the inlet duct screen machined from a single sheet of material, wherein the inlet duct screen comprises a grid portion with a plurality of apertures that extend uninterruptedly from an outwardly facing surface of the sheet of material to an inwardly facing surface of the sheet of material, wherein a circumferentially extending grid segment defining a perimeter of one of the apertures is axially offset from a circumferentially extending grid segment defining another one of the apertures.