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    MULTI-FIBER OPTICAL SENSOR FOR LIGHT AIRCRAFT
    22.
    发明申请
    MULTI-FIBER OPTICAL SENSOR FOR LIGHT AIRCRAFT 有权

    公开(公告)号：US20230081599A1

    公开(公告)日：2023-03-16

    申请号：US17475819

    申请日：2021-09-15

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray

    IPC: G01S17/95 ,  B64D47/00

    Abstract: A multi-fiber optical sensor system includes a light source configured to generate light energy, a transmitter fiber configured to receive the light energy from the light source and to project light energy out of a projecting end of the transmitter fiber over a transmitter fiber field of view, and a plurality of receiver fibers. Each of the plurality of receiver fibers has a receiving end aligned proximate and substantially parallel to the projecting end of the transmitter fiber and is configured to receive a received portion of the projected light energy reflected from a target within a receiver field of view. The multi-fiber optical sensor system also includes a lenslet array configured to shape the transmitter fiber field of view and give the transmitter field of view a finite cross-sectional area. The lenslet array has a plurality of lens corresponding to the transmitter fiber and each of the plurality of receiver fibers and is further configured to shape the receiver fiber field of view, tilt the center of the field of view with respect to the axis of the projected light energy for each of the plurality of receiver fibers and give the receiver fiber field of view for each of the plurality of receiver fibers a finite cross-sectional area. The multi-fiber optical sensor system also includes a detector configured to detect the portion of the projected light energy received by each of the plurality of receiver fibers. The receiver fiber field of view for each of the plurality of receiver fibers crosses the transmitter fiber field of view between a first crossing point at a distance Rmin from a lens axis and a last crossing point at a distance Rmax from the lens axis. There is a center crossing point Rmid at a point where a centerline of the receiver fiber field of view for each of the plurality of receiver fibers crosses a centerline of the transmitter fiber field of view. The range between Rmin and Rmax for each of the plurality of receiver fibers defines a detection zone such that each of the plurality of receiver fibers has a unique detection zone. Targets include a hard target and/or constituents of a cloud atmosphere.

    OPTICAL DETECTION OF FOREIGN OBJECT DEBRIS INGESTED BY AIRCRAFT ENGINE
    23.
    发明申请
    OPTICAL DETECTION OF FOREIGN OBJECT DEBRIS INGESTED BY AIRCRAFT ENGINE 有权

    公开(公告)号：US20210325315A1

    公开(公告)日：2021-10-21

    申请号：US17225985

    申请日：2021-04-08

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Darren G. Jackson

    IPC: G01N21/94 ,  F01D21/00

    Abstract: Apparatus and associated methods relate to a system for detecting foreign object debris ingested into an aircraft engine. The system detects such foreign object debris by projecting a beam of light over an inlet of the aircraft engine. When foreign object debris is ingested into the aircraft engine, it intercepts the beam of light and scatters a back-scattered portion of the intercepted beam of light. An optical detector is configured to detect the back-scattered portion of the intercepted beam of light. A processor is configured to determine whether foreign object debris is ingested by the aircraft engine based on a comparison of a threshold value with a signal indicative of the back-scattered portion generated by the optical detector.

    SYSTEM FOR INTERFACING WITH AN OPTICALLY-POWERED SENSOR
    25.
    发明申请
    SYSTEM FOR INTERFACING WITH AN OPTICALLY-POWERED SENSOR 审中-公开

    公开(公告)号：US20190226881A1

    公开(公告)日：2019-07-25

    申请号：US15875770

    申请日：2018-01-19

    Applicant: Rosemount Aerospace Inc.

    Inventor： David Michael Socha ,  Mark Ray

    IPC: G01D5/26 ,  G02B6/38 ,  H04B10/079 ,  G02B6/255 ,  G01F23/292

    CPC classification number: G01D5/268 ,  G01F23/292 ,  G02B6/2552 ,  G02B6/3851 ,  H04B10/07955 ,  H04B10/807

    Abstract: Apparatus and associated methods relate to a system for interfacing with an optically-powered sensor. The system includes an optical emitter configured to emit a beam of optical energy so as to provide operating power for the optically-powered sensor. The system includes an optical detector configured to detect a time sequence of optical pulses generated by the optically-powered sensor, the time sequence of pulses modulated between first and second optical power levels. The system includes a parameter extractor configured to determine a value of a sensed parameter based on the time sequence of optical pulses detected by the optical detector. The system also includes a power controller configured to control power level of the emitted beam of optical energy based on the first and/or second optical power levels detected by the optical detector.

    CONTROLLED SAMPLING VOLUME OF CLOUDS FOR MEASURING CLOUD PARAMETERS
    26.
    发明申请
    CONTROLLED SAMPLING VOLUME OF CLOUDS FOR MEASURING CLOUD PARAMETERS 有权

    公开(公告)号：US20180209887A1

    公开(公告)日：2018-07-26

    申请号：US15411520

    申请日：2017-01-20

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Kaare Josef Anderson

    IPC: G01N15/02 ,  G01N15/06 ,  G01W1/00

    CPC classification number: G01N15/0211 ,  B64D15/20 ,  G01N21/49 ,  G01N2015/0026 ,  G01S7/4811 ,  G01S7/4815 ,  G01S7/4818 ,  G01S17/95 ,  G01W1/00

    Abstract: Apparatus and associated methods relate to determining a size and/or density of Super-cooled Large Droplets (SLDs) in a cloud atmosphere by comparing detected optical signals reflected from small and large sampling volumes of a cloud atmosphere. In some embodiments, an optical pulse is generated and divergently projected from a first optical fiber. A collimating lens is aligned within the divergently projected optical pulse collimating a portion thereof. The collimated and uncollimated portions of the optical pulse are projected into the small and large sampling volumes of the cloud atmosphere, respectively. The ratio of the collimated to the uncollimated portions can be optically controlled. Signals corresponding to optical pulses having different collimated/uncollimated ratios are backscattered by the cloud atmosphere, detected and compared to one another. A processor is configured to calculate, based on scintillation spike differences between the optical pulses of different collimated/uncollimated ratios, a size and/or density of SLDs.

    Controlled sampling volume of clouds for measuring cloud parameters
    27.
    发明授权
    Controlled sampling volume of clouds for measuring cloud parameters 有权

    公开(公告)号：US09983112B1

    公开(公告)日：2018-05-29

    申请号：US15411548

    申请日：2017-01-20

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Kaare Josef Anderson

    IPC: G01N15/06 ,  G01N15/02 ,  G01W1/00

    CPC classification number: G01N15/0205 ,  B64D15/20 ,  G01N15/06 ,  G01N2015/0026 ,  G01N2015/0277 ,  G01N2015/0693 ,  G01S7/4811 ,  G01S7/4815 ,  G01S7/4818 ,  G01S17/95 ,  G01W1/00

    Abstract: Apparatus and associated methods relate to determining a size and/or density of Super-cooled Large Droplets (SLDs) in a cloud atmosphere by comparing detected optical signals reflected from small and large sampling volumes of a cloud atmosphere. In some embodiments, an optical pulse is generated and divergently projected from a first optical fiber. A collimating lens is aligned within the divergently projected optical pulse collimating a portion thereof. The collimated and uncollimated portions of the optical pulse are projected into the small and large sampling volumes of the cloud atmosphere, respectively. The ratio of the collimated to the uncollimated portions can be optically controlled. Signals corresponding to optical pulses having different collimated/uncollimated ratios are backscattered by the cloud atmosphere, detected and compared to one another. A processor is configured to calculate, based on scintillation spike differences between the optical pulses of different collimated/uncollimated ratios, a size and/or density of SLDs.

    MULTI-FIBER OPTICAL SENSOR FOR ICING
    29.
    发明申请
    MULTI-FIBER OPTICAL SENSOR FOR ICING 审中-公开

    公开(公告)号：US20180024270A1

    公开(公告)日：2018-01-25

    申请号：US15216398

    申请日：2016-07-21

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Kaare Josef Anderson

    IPC: G01W1/00 ,  G01N15/02

    CPC classification number: G01W1/00 ,  G01N15/0211 ,  G01S7/4802 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/499 ,  G01S17/95 ,  Y02A90/19

    Abstract: Apparatus and associated methods relate to sampling a large volume of a cloud atmosphere so as to obtain a large signal response from even a sparse distribution of water droplets in the cloud atmosphere. Such a volume can be probed by projecting an uncollimated optical beam into the cloud atmosphere and sampling the signal backscattered from the water droplets located within the probed volume. The uncollimated optical beam can be generated by projecting a diverging pulse of light energy from a polished end of a first optical fiber. A second optical fiber can be used to receive the optical signal backscattered from the cloud atmosphere. The second optical fiber can also have substantially the same field of view as the first optical fiber, so as to receive signals from a volume of the cloud atmosphere that is substantially commensurate with the probed volume.

    METHOD OF ESTIMATING CLOUD PARTICLE SIZES USING LIDAR RATIO
    30.
    发明申请
    METHOD OF ESTIMATING CLOUD PARTICLE SIZES USING LIDAR RATIO 审中-公开

    公开(公告)号：US20180024036A1

    公开(公告)日：2018-01-25

    申请号：US15216340

    申请日：2016-07-21

    Applicant: Rosemount Aerospace Inc.

    Inventor： Mark Ray ,  Kaare Josef Anderson

    IPC: G01N15/02 ,  G01W1/00

    CPC classification number: G01N15/0211 ,  G01N2015/0046 ,  G01S7/4812 ,  G01S7/499 ,  G01S17/95 ,  G01W1/00 ,  Y02A90/19

    Abstract: Apparatus and associated methods relate to determining sizes of water particles in a cloud atmosphere based on a detected portion of signals generated from a single monochromatic source and backscattered by water particles in a cloud atmosphere. A backscatter coefficient and an optical extinction coefficient are calculated, based on the detected portion of signals generated from the monochromatic source and backscattered by water particles in the cloud atmosphere. A LIDAR ratio—a ratio of the optical extinction coefficient to the backscatter coefficient, is calculated. Sizes of water particles in the cloud atmosphere are estimated based on the LIDAR ratio. An output signal indicative of the estimated sizes of water particles in the cloud atmosphere is generated. Estimating sizes of water particles using signals from a single monochromatic source advantageously can alert a pilot of an aircraft of cloud conditions, without requiring multi-chromatic sources.

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