SYSTEM AND METHOD FOR TESTING AIRCRAFT ENGINES

    公开(公告)号:US20230322412A1

    公开(公告)日:2023-10-12

    申请号:US18121806

    申请日:2023-03-15

    CPC classification number: B64F5/60 G01M9/06 G01M15/14

    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.

    Aircraft fan with low part-span solidity

    公开(公告)号:US11300136B2

    公开(公告)日:2022-04-12

    申请号:US16577573

    申请日:2019-09-20

    Abstract: A fan for a gas turbine engine includes: an annular casing; a disk disposed inside the casing and mounted for rotation about an axial centerline, the disk including a row of fan blades extending radially outwardly therefrom; each of the fan blades including an airfoil having circumferentially opposite pressure and suction sides extending radially in span from a root to a tip, and extending axially in chord between spaced-apart leading and trailing edges, with the airfoils defining corresponding flow passages therebetween for pressurizing air; the row including no more than 21 and no less than 13 of the fan blades; and wherein each of the fan blades has a solidity defined by a ratio of the airfoil chord over a circumferential pitch of the fan blades, measured at 60% of a radial distance from the root to the tip, of less than about 1.6.

    SYSTEM AND METHOD FOR OPERATING A COMPRESSOR ASSEMBLY

    公开(公告)号:US20220074420A1

    公开(公告)日:2022-03-10

    申请号:US17015400

    申请日:2020-09-09

    Abstract: A turbo machine, a computer-implemented method, and a computer system for operating a compressor assembly are provided. The method includes comparing a first data set and a second data set to determine a first correlation factor, comparing the first correlation factor to a first threshold that at least partially determines whether a stall precursor exists, removing mean values from the first data set and the second data set, comparing the first data set and the second data set each removed of mean values to determine a second correlation factor, and comparing the second correlation factor to the first threshold, and classifying the stall precursor as either a spike stall precursor, a modal stall precursor, or a combination stall precursor.

    UNDUCTED SINGLE ROTOR ENGINE
    20.
    发明申请

    公开(公告)号:US20210108523A1

    公开(公告)日:2021-04-15

    申请号:US17071019

    申请日:2020-10-15

    Abstract: A propulsion system according to aspects of the present disclosure is provided, the propulsion system including a rotor assembly with a plurality of blades extended radially relative to the engine centerline axis, and a vane assembly positioned in aerodynamic relationship with the rotor assembly. The vane assembly includes a plurality of vanes extended radially relative to the engine centerline axis, and the propulsion system includes a ratio of a quantity of blades to a quantity of vanes between 2:5 and 2:1.

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