公开(公告)号：US11072435B2

公开(公告)日：2021-07-27

申请号：US16170941

申请日：2018-10-25

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Raymond Mccage ,  Derek Anthony Rice ,  Joseph Becar ,  Yates Wong ,  Brian Jardine ,  Bruce Dan Bouldin ,  Kevin Sing

IPC: B64D33/02 ,  B64D27/10 ,  F02C7/04 ,  B64D35/02

Abstract: A turboprop engine system for an aircraft includes an engine, a propeller, and a gear train coupled to and configured to provide power from the engine to the propeller at a predetermined gear reduction. The engine system also includes a gearbox that houses at least part of the gear train. The gearbox includes a gearbox flow structure and an inlet flow structure that is removably attached to the gearbox. The inlet flow structure and the gearbox flow structure cooperate to define an inlet flow passage to the engine. The inlet flow passage has an upstream end and a downstream end that are cooperatively defined by the inlet flow structure and the gearbox flow structure. The upstream end is configured to receive an airstream that is directed along the inlet flow passage to the downstream end and toward the engine.