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公开(公告)号：US20240018900A1
公开(公告)日：2024-01-18
申请号：US18164951
申请日：2023-02-06
Applicant: General Electric Company
Inventor： Syed Arif Khalid , Daniel L. Tweedt , David B. Riddle
Abstract: Apparatuses and systems are provided herein for unducted propulsion systems. The system includes an aft housing for low drag for high subsonic sustained flight. A plurality of blades are affixed to the aft housing, wherein the housing defines a flowpath curve extending from the axial extent of the aft blade root to the aft end of the aft housing. The flowpath curve is described by an axial direction parallel to an axis of rotation and a radius from the axis of rotation. The flowpath curve includes first point having a first radius where the radius reaches a maximum aft of the aft blade root and a second point forward of the first point having a second radius where the radius stops decreasing. The ratio of the first radius to the second radius is greater than or equal to 1.081.
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Patent Agency Ranking
公开(公告)号：US20230322412A1
公开(公告)日：2023-10-12
申请号：US18121806
申请日：2023-03-15
Applicant: General Electric Company
Inventor： Daniel L. Tweedt , Andrew Breeze-Stringfellow , Syed Arif Khalid , William J. Solomon , Alexander Hills
Abstract: A flow conditioning structure is disposed about a central axis of an unducted thrust producing apparatus. The unducted thrust producing apparatus has a propeller that generates thrust in a working fluid by rotating about the central axis. The propeller is comprised of blades each with a free end. Each blade also has a leading edge where the working fluid enters during forward thrust operation. The flow conditioning structure comprises a structure forming a passage and the structure forming the passage controls a speed and a direction of the working fluid drawn into the unducted thrust producing apparatus so as to approximate operational speeds and operational directions of the working fluid entering the unducted thrust producing apparatus during operations of a vehicle.
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公开(公告)号：US20210108653A1
公开(公告)日：2021-04-15
申请号：US16599459
申请日：2019-10-11
Applicant: General Electric Company
Inventor： Daniel Lawrence Tweedt , Syed Arif Khalid
Abstract: A ducted fan is provided including a fan casing surrounding a plurality of fan blades mounted to a rotating drive shaft. The plurality of blades define a tip stagger angle of greater than 68 degrees and the fan casing defines an annular recess defined by an inner wall of the fan casing, the annular recess extending about the circumferential direction proximate a blade tip of each of the plurality of blades. The annular recess may define an average recess depth greater than 10 percent of the tip chord length. The annular recess may also define a length ratio equal to a recess length over the tip axial chord length that is greater than 1.5.
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公开(公告)号：US20200023959A1
公开(公告)日：2020-01-23
申请号：US16042141
申请日：2018-07-23
Applicant: General Electric Company
Inventor： Andrew Breeze-Stringfellow , Daniel Lawrence Tweedt , Syed Arif Khalid , Kurt David Murrow
IPC: B64C29/00
Abstract: A lift fan apparatus includes: a rotor having at least one rotatable hub carrying at least one row of blades; a duct surrounding the rotor, the duct including spaced-apart peripheral walls extending between an inlet and an exit, the peripheral walls collectively defining a flow channel which includes a diffuser disposed downstream of the rotor, in which a flow area at the exit is greater than a flow area at the rotor; and a plurality of spaced-apart splitters disposed in the diffuser, each of the splitters having opposed side walls extending between an upstream leading edge and a downstream trailing edge, wherein the splitters divide the diffuser into a plurality of side-by-side flow passages.
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35.发明授权公开(公告)号：US10399664B2
公开(公告)日：2019-09-03
申请号：US15145894
申请日：2016-05-04
Applicant: GENERAL ELECTRIC COMPANY
Inventor： William Joseph Bowden , Andrew Breeze-Stringfellow , Richard David Cedar , Syed Arif Khalid , Patrick John Lonneman , Aleksander Piotr Pasieczny , Daniel Lawrence Tweedt
IPC: B64C11/14 , B64D33/02 , F02C6/20 , F02C7/05 , F01D5/02 , F01D9/04 , F01D25/04 , F01D25/24 , F04D29/32 , F04D29/38 , B64D27/00
Abstract: An unducted thrust producing system is provided that can include a rotating element having an axis of rotation about a central longitudinal axis and comprising a plurality of blades attached to a spinner; a stationary element positioned aft of the rotating element; and an inlet positioned between the rotating element and the stationary element such that the inlet passes radially inward of the stationary element. The rotating element defines an annular valley positioned between a first annular crown and a second annular crown, and the inlet defines an open area positioned aft of the second annular crown.
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公开(公告)号：US20190204010A1
公开(公告)日：2019-07-04
申请号：US15858453
申请日：2017-12-29
Applicant: General Electric Company
CPC classification number: F28D7/005 , F02C3/04 , F02C7/14 , F02K3/06 , F05D2220/32 , F05D2240/35 , F05D2260/22141 , F28D7/10 , F28D2021/0026 , F28F1/22 , F28F13/08
Abstract: A heat exchanger apparatus includes: spaced-apart peripheral walls extending between an inlet and an outlet, the peripheral walls collectively defining a flow channel which includes a diverging portion downstream of the inlet, in which a flow area is greater than a flow area at the inlet; a plurality of spaced-apart fins disposed in the flow channel, each of the fins having opposed side walls extending between an upstream leading edge and a downstream trailing edge, wherein the fins divide at least the diverging portion of the flow channel into a plurality of side-by-side flow passages; and a heat transfer structure disposed within at least one of the fins.
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