Patent ID: 8292978

Claim:
A radial air intake for an aircraft engine or a power unit with a ring-shaped filter for covering the radial air intake, wherein the ring-shaped filter comprises a first fixed part and a second mobile part, each comprising a rigid frame in which a filtering material is inserted and affixed, the rigid frame of the second mobile part being movable with respect to the first fixed part through actuator means from a filtering position in which the whole radial air intake is covered by the ring-shaped filter, to a bypass position in which the second mobile part uncovers at least partly the radial air intake, the second mobile part sliding along the first fixed part in its displacement from the filtering position to the bypass position and the second mobile part presenting a greater diameter than a diameter of the first fixed part while sliding on an outer side or face of the first fixed part, the second mobile part having a smaller diameter than the diameter of the first fixed part while sliding on an inner side or face of the first fixed part.