公开(公告)号：US12241412B1

公开(公告)日：2025-03-04

申请号：US18481705

申请日：2023-10-05

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Roberto Marrano ,  Mark Cunningham ,  Eray Akcayoz ,  Corentin Brette

IPC: F02C7/055 ,  B64D33/02

Abstract: A system for an aircraft includes 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 extends between a front wall and a rear wall along the central axis. An inlet guard is arranged at the airflow inlet and extends across the flowpath. The inlet guard includes a first screen extending circumferentially about the central axis. The first screen has a first screen axial width L1 extending from the front wall to the rear wall. The inlet guard further includes a second screen extending at least partially circumferentially about the central axis. The second screen is disposed radially outward of the first screen and axially overlaps the first screen. The second screen has a second screen axial width L2 less than the first screen axial width L1.

公开(公告)号：US20250116229A1

公开(公告)日：2025-04-10

申请号：US18377180

申请日：2023-10-05

Applicant: Pratt & Whitney Canada Corp.

Inventor： Eray Akcayoz ,  Mark Cunningham ,  Roberto Marrano ,  Corentin Brette

IPC: F02C7/055 ,  F02C7/057

Abstract: A system is provided for an aircraft. This aircraft system includes an aircraft engine, an inlet guard and an actuation system. The aircraft engine has a flowpath projecting into the aircraft engine from an airflow inlet. The inlet guard is arranged at the airflow inlet and extends across the flowpath. The inlet guard includes a first screen, a second screen and a plurality of perforations. The first screen is adjacent and overlaps the second screen. The perforations project through the inlet guard and are formed by the first screen and the second screen. The actuation system is configured to move the first screen along the second screen. The movement of the first screen along the second screen changes a geometry of each of the perforations.

公开(公告)号：US20250115366A1

公开(公告)日：2025-04-10

申请号：US18377186

申请日：2023-10-05

Applicant: Pratt & Whitney Canada Corp.

Inventor： Mark Cunningham ,  Eray Akcayoz ,  Roberto Marrano ,  Corentin Brette

IPC: B64D33/02

Abstract: A system is provided for an aircraft. This aircraft system includes a gas turbine engine, a flowpath and an inlet guard. The gas turbine engine includes a compressor section. The flowpath projects longitudinally into the gas turbine engine from an airflow inlet and longitudinally through the compressor section. The inlet guard extends across the flowpath longitudinally upstream of the compressor section. The inlet guard extends circumferentially about an axis. The inlet guard includes a first screen and a second screen. The first screen includes a plurality of first perforations with a first perforation size. The second screen is circumferentially adjacent the first screen about the axis. The second screen includes a plurality of second perforations with a second perforation size that is different than the first perforation size.