公开(公告)号：US12215597B1

公开(公告)日：2025-02-04

申请号：US18424383

申请日：2024-01-26

Applicant: Pratt & Whitney Canada Corp.

Inventor： Anthony Bruni ,  Jason Nichols ,  Ramy Rashad ,  Mohammadreza Amiralaei

IPC: F01D5/14 ,  F04D29/28

Abstract: An aircraft propulsion system includes a bladed rotor configured for rotation about a rotational axis. A rotor blade of the bladed rotor of rotor blades includes a blade body. The blade body has a blade span extending between and to a base end and a tip end. The blade body has a blade chord extending between and to a leading edge and a trailing edge. The blade body forms a pressure side surface and a suction side surface. The blade body forms a recess at the pressure side surface. The recess includes a recess surface portion forming a portion of the pressure side surface. The recess surface portion has a recess height. The recess height is greater than or equal to a Y-value of 0.025 for a normalized two-dimensional curve of a surface profile of the recess surface portion taken along a Y-Z plane orthogonal to the rotational axis for a recess span.

公开(公告)号：US11125154B2

公开(公告)日：2021-09-21

申请号：US16674368

申请日：2019-11-05

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jason Nichols ,  Ignatius Theratil ,  Mohammadreza Amiralaei

IPC: F02C3/10 ,  F02C7/264 ,  F01D5/04 ,  F01D5/12 ,  F04D29/24 ,  F04D29/30 ,  F04D29/28

Abstract: The centrifugal impeller can have a hub and a plurality of blades, each of the blades having a span extending from the hub to a tip edge, camber lines extending from an inlet edge to an outlet edge between two opposite faces, including a tip camber line extending along the tip edge and a 50% span camber line extending at 50% of the span, a thickness extending between opposite faces of each blade, the tip edge having, at a location corresponding to 5% of the tip camber line, less than 15% of the maximum thickness, each of the blades having, along the 50% span camber line, a thickness reaching at least 58% of the maximum thickness and then reducing by at least 5% of the maximum thickness within 10% of the length of the 50% span camber line.