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公开(公告)号：US20220036742A1
公开(公告)日：2022-02-03
申请号：US16941277
申请日：2020-07-28
摘要： In an embodiment, a method is provided. The method comprises selecting at least one set of line of sight (LOS) vectors oriented in one or more directions outward from a vehicle; determining at least one air data solution based on the at least one set of LOS vectors; adjusting at least one value of an air vector equation based on a predetermined quantity; upon adjusting the at least one value, then determining at least one modified air data solution, wherein the at least one modified air data solution is determined based on the at least one set of LOS vectors and the at least one value; and comparing a difference between the at least one air data solution and the at least one modified air data solution to a threshold value, wherein the threshold value is indicative of error with respect to the at least one set of LOS vectors.
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公开(公告)号：US10591312B2
公开(公告)日：2020-03-17
申请号：US15668563
申请日：2017-08-03
发明人： Matthew Wiebold , Grant Lodden , Dominique Fourguette , Xiao Zhu Fan , David Johnson , Jane Pavlich , David Zuk
IPC分类号： G01C3/08 , G01C23/00 , G01P5/26 , G01K11/00 , G01L11/02 , G01S7/48 , G01S17/58 , G01S17/10 , G01S7/481 , G01S17/89 , G01S17/95 , G01S17/42
摘要： A system for obtaining air data for a vehicle comprises a laser device that emits laser light pulses, and transmit optics that transmits the light pulses into an external air volume adjacent to the vehicle. The system also includes receive optics that collects scattered portions of the light pulses from the external air volume, and a whispering gallery mode (WGM) frequency discriminator that receives the scattered portions of the light pulses from the receive optics. The WGM frequency discriminator includes at least one WGM resonator that outputs a selected portion of the light pulses at one or more optical signal frequencies via tuning the WGM resonator other than by an electro-optic effect. An optical detector samples the selected portion of the light pulses from the WGM frequency discriminator, and converts the sampled light pulses to scalar values. A processing unit receives and records the scalar values from the optical detector.
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公开(公告)号：US20200049625A1
公开(公告)日：2020-02-13
申请号：US16660616
申请日：2019-10-22
发明人： Jason Garde , Xiao Zhu Fan , Grant Lodden , Danny Thomas Kimmel
IPC分类号： G01N21/53 , G01N15/14 , G01N15/02 , B64D43/00 , B64D45/00 , B64D47/02 , G01S17/02 , G01S17/87 , B64D15/20 , G01N21/49 , G01S17/95
摘要： In one embodiment, a particle sensor on or in a vehicle is provided. The laser particle sensor comprises an optical system; a processing system coupled to the optical system; wherein the optical system is configured to transmit one or more laser light beams to detect particles in a volume of freestream fluid, and to have the one or more light beams terminate on a portion of the vehicle on which the optical system is mounted; and wherein the optical system is configured to receive a backscattered portion of the one or more laser light beams transmitted by the optical system.
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公开(公告)号：US20210396884A1
公开(公告)日：2021-12-23
申请号：US16909784
申请日：2020-06-23
发明人： Timothy A. Peterson , Xiao Zhu Fan
IPC分类号： G01S17/89 , G01S17/10 , G01S7/4865 , G01S17/931 , G01S17/933
摘要： An air data system comprises a light source that emits a pulsed beam, and an optical transceiver coupled to the light source and configured to receive the pulsed beam. The transceiver is operative to transmit the pulsed beam into an interrogation air region; and receive and collect scattered pulses from the interrogation air region. An optical modulation device is coupled to the transceiver, and is configured to receive the collected scattered pulses from the transceiver and output modulated pulses. An optical detector is coupled to the modulation device and receives the modulated pulses from the modulation device. The modulation device has a nanosecond-based rise/fall time that is synchronized and delayed with respect to the pulsed beam. The modulation device provides for stroboscopic detection of a volume of the interrogation air region based on the modulated pulses received by the detector and having an exposure time of multiple pulse periods.
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公开(公告)号：US10518896B2
公开(公告)日：2019-12-31
申请号：US15387462
申请日：2016-12-21
发明人： Jason Garde , Grant Lodden , Xiao Zhu Fan , Matthew Wiebold
摘要： In one embodiment, a method of determining the onset of a stall condition in a vehicle is provided. The method comprises: measuring, with a stall detection system, data which would indicate the presence of turbulent fluid flowing proximate to a foil; determining from the data whether an onset of a stall condition has occurred; and upon determining the onset of the stall condition, performing at least one of: issuing an alert, and causing the vehicle to avoid or exit the stall condition, and cease such activity when the onset of the stall condition no longer exists.
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公开(公告)号：US20180088045A1
公开(公告)日：2018-03-29
申请号：US15427087
申请日：2017-02-08
发明人： Jason Garde , Xiao Zhu Fan , Grant Lodden , Danny Thomas Kimmel
CPC分类号： G01N21/53 , B64D15/20 , B64D43/00 , B64D45/00 , B64D47/02 , G01N15/0211 , G01N15/1434 , G01N21/49 , G01N21/538 , G01N2015/0046 , G01N2021/4709 , G01N2201/0214 , G01N2201/06113 , G01N2201/068 , G01N2201/12 , G01S17/023 , G01S17/87 , G01S17/95 , Y02A90/19
摘要： In one embodiment, a particle sensor on or in a vehicle is provided. The laser particle sensor comprises an optical system; a processing system coupled to the optical system; wherein the optical system is configured to transmit one or more laser light beams to detect particles in a volume of freestream fluid, and to have the one or more light beams terminate on a portion of the vehicle on which the optical system is mounted; and wherein the optical system is configured to receive a backscattered portion of the one or more laser light beams transmitted by the optical system.
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公开(公告)号：US20170276790A1
公开(公告)日：2017-09-28
申请号：US15172745
申请日：2016-06-03
发明人： Grant Lodden , Danny Thomas Kimmel , Xiao Zhu Fan
CPC分类号： G01S17/88 , B64D43/02 , G01P5/26 , G01P13/025 , G01S17/023 , G01S17/58
摘要： An air data system comprises an optical air data system comprising one or more LiDAR channels that each include at least one line-of-sight for air data interrogation, wherein the LiDAR channels are configured to output a set of air data signals. An optional non-optical air data system comprises one or more non-optical air data sensors selected from one or more pitot sensors, one or more static pressure sensors, one or more temperature sensors, one or more angle of attack vanes, one or more angle of sideslip vanes, one or more multi-function probes, or combinations thereof. The non-optical air data sensors are configured to output a set of air data signals. One or more processors are coupled to the LiDAR channels and the non-optical air data sensors when present. The processors are configured to use the air data signals to conduct signal analysis, data processing, data augmentation, voting, or combinations thereof.
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公开(公告)号：US10794835B2
公开(公告)日：2020-10-06
申请号：US15903411
申请日：2018-02-23
IPC分类号： G01N21/85 , B64D45/00 , G01S17/02 , G01S7/481 , B64D47/06 , G01S17/87 , G01S17/95 , B64D15/20 , F21W107/30 , G01S7/499
摘要： A sensor assembly comprises a device mounted on a surface of a vehicle and extending through at least one passage in the surface of the vehicle, and a sensor comprising a short range particulate (SRP) sensor, or a light detection and ranging (LiDAR) air data sensor. The sensor is co-located and integrated with the device mounted on the surface of the vehicle. No additional passages through the surface of the vehicle are needed to integrate the sensor with the device.
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公开(公告)号：US10775504B2
公开(公告)日：2020-09-15
申请号：US15280847
申请日：2016-09-29
发明人： Jason Garde , Grant Lodden , Xiao Zhu Fan , Danny Thomas Kimmel
摘要： In one embodiment, a system includes a vehicle and a laser air data sensor, including a laser transceiver configured to transmit one or more laser light beams, mounted to the vehicle. In some embodiments, a window of the laser transceiver is fixed and oriented to transmit one or more laser light beams away from the vehicle and approximately parallel to a vertical axis of the vehicle. In some embodiments, a window of the laser transceiver is fixed and oriented to transmit one or more laser light beams toward another portion of the vehicle. In some embodiments, the system further includes a processing device configured to control the laser air data sensor to attenuate the one or more laser light beams based on one or more operating parameters of the vehicle.
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公开(公告)号：US20190324051A1
公开(公告)日：2019-10-24
申请号：US15957629
申请日：2018-04-19
发明人： Lee R. Wienkes , Matthew Wiebold , Xiao Zhu Fan
摘要： A system comprises a particle sensor assembly, which includes a light source that transmits a light beam into an external interrogation air region; a set of receive optics that provides a receive channel, the receive optics configured to collect a scattered portion of the light beam from a particle in the interrogation air region; and an optical detector that receives the collected scattered portion. The optical detector measures a signal intensity as a function of time from the scattered portion, with the signal intensity indicating a particle size and a signal duration indicating motion of the particle through the interrogation air region. A processor is in communication with the optical detector and is operative to determine a transit time of the particle through the interrogation air region based on the signal duration, and compute an airspeed based on parameters comprising the transit time and a size of the light beam.
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