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    HYDROSTATIC SEAL WITH ENHANCED MANEUVER RESPONSE
    15.
    发明申请
    HYDROSTATIC SEAL WITH ENHANCED MANEUVER RESPONSE 审中-公开

    公开(公告)号：US20200217215A1

    公开(公告)日：2020-07-09

    申请号：US16239611

    申请日：2019-01-04

    Applicant: United Technologies Corporation

    Inventor： Eric A. Grover ,  Brian F. Hilbert ,  Daniel L. Gysling ,  Christopher W. Robak

    IPC: F01D11/00 ,  F01D11/08

    Abstract: A hydrostatic seal configured to be disposed between relatively rotatable components includes a base. The seal also includes a seal housing. The seal further includes a shoe operatively coupled to the base and extending axially from a forward end to an aft end. The seal yet further includes a plurality of teeth extending radially from a sealing surface of the shoe, one of the teeth being a longest tooth that extends furthest radially from the sealing surface, the axial distance from the forward end of the shoe to the longest tooth being greater than a radial distance from a radial tooth tip to the sealing surface.

    REDUCED AXIAL SPACE SELF-PRESSURIZING DAMPER
    16.
    发明申请
    REDUCED AXIAL SPACE SELF-PRESSURIZING DAMPER 审中-公开

    公开(公告)号：US20200080445A1

    公开(公告)日：2020-03-12

    申请号：US16125875

    申请日：2018-09-10

    Applicant: United Technologies Corporation

    Inventor： Daniel L. Gysling ,  Philip Andrew Varney

    IPC: F01D25/16 ,  F02C3/04 ,  F16F15/023 ,  F16C19/52

    Abstract: A bearing assembly includes a bearing housing having a first bearing housing surface and a second bearing housing surface. The bearing housing surfaces are substantially axially parallel. A the first bearing housing surface has a first and second piston ring groove with a corresponding piston ring in each groove. A damper includes a first outer surface radially adjacent to and opposing the first bearing housing surface and a second outer surface radially adjacent to and opposing the second bearing housing surface. The second outer surface includes a third and fourth piston ring groove with a corresponding piston ring disposed in each groove. The bearing housing includes a damping fluid passage configured to provide damping fluid to a gap radially between the first outer surface and the first bearing housing surface and to a gap radially between the second outer surface and the second bearing housing surface.

    Flutter inhibiting intake for gas turbine propulsion system
    17.
    发明授权
    Flutter inhibiting intake for gas turbine propulsion system 有权

    公开(公告)号：US10428685B2

    公开(公告)日：2019-10-01

    申请号：US15452627

    申请日：2017-03-07

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： Bruce L. Morin ,  Daniel L. Gysling ,  Mani Sadeghi

    IPC: F01D25/06 ,  B64D33/02 ,  F02C7/045 ,  F02K1/82 ,  F02K3/06 ,  G10K11/172

    Abstract: Disclosed is flutter damper including a first cavity having a radially inner side in fluid communication with a flow path, and a second cavity having a radially inner side in fluid communication with a radially outer side of the first cavity, and the flutter damper having an impedance characteristic at one or more target frequencies defined as ftarget=fS,ND+Ω·ND wherein fS,ND is a resonance frequency corresponding to a structural mode of a rotating component, ND is a nodal diameter count of the structural mode, and Ω is a rotational speed of the rotating component, and wherein the flutter damper has the following impedance characteristic at the one or more targeted frequencies R≥2ρc −3ρc≤X≤−0.6ρc wherein R is the real part of the impedance characteristic, X is the imaginary part of the impedance characteristic, ρ is air density, and c is speed of sound.

    SELF PRESSURIZING SQUEEZE FILM DAMPER
    18.
    发明申请
    SELF PRESSURIZING SQUEEZE FILM DAMPER 审中-公开

    公开(公告)号：US20190071997A1

    公开(公告)日：2019-03-07

    申请号：US15696552

    申请日：2017-09-06

    Applicant: United Technologies Corporation

    Inventor： Ulf J. Jonsson ,  Daniel L. Gysling

    IPC: F01D25/16 ,  F02C7/06 ,  F16F9/10 ,  F16F9/32 ,  F16F9/36 ,  F16F9/512 ,  F16F15/023 ,  F16C19/52

    Abstract: A fluid damping structure is provided that includes an inner and outer annular elements, first and second ring seals, first and second outer annular seals. The inner annular element has an outer radial surface and a plurality of annular grooves disposed in the outer radial surface. The outer annular element has an inner radial surface. A damping chamber is defined by the inner and outer annular elements, and the first and second inner ring seal. A first lateral chamber is disposed on a first axial side of the damping chamber. A second lateral chamber is disposed on a second axial side of the damping chamber. A plurality of fluid passages are disposed in at least one of the inner annular element or the inner ring seals. The fluid damping structure is configurable in an open configuration and a closed configuration.

    SYSTEM AND METHOD FOR BLADE HEALTH MONITORING
    19.
    发明申请
    SYSTEM AND METHOD FOR BLADE HEALTH MONITORING 审中-公开

    公开(公告)号：US20180224353A1

    公开(公告)日：2018-08-09

    申请号：US15427989

    申请日：2017-02-08

    Applicant: UNITED TECHNOLOGIES CORPORATION

    Inventor： Daniel L. Gysling ,  Gregory S. Hagen

    IPC: G01M15/14 ,  F04D27/00 ,  F04D29/66 ,  F02K3/06 ,  F04D29/38

    Abstract: A system and method for blade health monitoring is provided. The system and method may improve health diagnostic capabilities for engine blades, thus reducing the risk of blade failure during engine operation, increasing the useful life of each engine blade, and allowing for more accurate maintenance and/or inspection schedules of engine blades. The system may include a health monitoring processor, an excitation actuator, and a health monitoring sensor. The excitation actuator may pulse a force against an engine blade to cause non-integral vibratory excitations in engine blades. The health monitoring sensor may measure the vibratory excitations. The health monitoring processor may analyze the vibratory excitations to determine the health of the engine blade.

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