US 12,241,412 B1
Inlet guard screen for an inlet of an aircraft engine
Roberto Marrano, Boucherville (CA); Mark Cunningham, Montreal-West (CA); Eray Akcayoz, Côte-Saint-Luc (CA); and Corentin Brette, Montréal (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Oct. 5, 2023, as Appl. No. 18/481,705.
Int. Cl. F02C 7/055 (2006.01); B64D 33/02 (2006.01)
CPC F02C 7/055 (2013.01) [B64D 2033/022 (2013.01); B64D 2033/0233 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for an aircraft, comprising:
an aircraft engine having a central axis with a flowpath projecting into the aircraft engine from an airflow inlet;
an inlet plenum at the airflow inlet extending between a front wall and a rear wall along the central axis; and
an inlet guard arranged at the airflow inlet and extending across the flowpath, the inlet guard including a first screen extending circumferentially about the central axis, the first screen having a first screen axial width L1 extending from the front wall to the rear wall, the inlet guard further including a second screen extending at least partially circumferentially about the central axis, the second screen disposed radially outward of the first screen and axially overlapping the first screen, the second screen having a second screen axial width L2 less than the first screen axial width L1.