Patents by Inventor Thomas A. Frewen

Thomas A. Frewen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11747237
    Abstract: A method and system of providing customizable service for an asset. The method including generating a predictive model for each asset of a fleet, each predictive model based on an operational profile for the asset and including a probability density function associated with the operational durability of the asset, establishing a maintenance strategy associated with the asset, and combining each of the predictive models to generate a compound fleet performance model, the fleet performance model including a combined probability density function. The method also includes collecting actual asset performance and maintenance data to generate actual asset metrics, determining a fleet performance profile based on the actual asset metrics indicative of a health assessment of the fleet, comparing the predicted fleet performance with the actual fleet performance, and ascertaining actionable choices for managing the assets based on a deviation of the predicted and actual fleet performance.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: September 5, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Thomas A. Frewen, Ozgur Erdinc, Hala Mostafa, Mei Chen, Draguna Vrabie
  • Publication number: 20230267844
    Abstract: A system includes a first dataset of vehicle trajectories including individual vehicle tracks forming a first track density, a desired vehicle track density profile, a spatio-temporal coverage metric, and a track model including Heaviside functions encoding track time origins and durations for the individual vehicle tracks and including locations for the plurality of individual vehicle tracks. Approximations of the Heaviside functions are minimized as a function of the spatio-temporal coverage metric. The first dataset of vehicle trajectories is manipulated to satisfy the desired vehicle track density profile through minimizing an approximation of the Heaviside functions. Each individual vehicle track in the first dataset of vehicle trajectories is shifted as a result of the optimization, thereby generating a second dataset of vehicle trajectories having a second track density.
    Type: Application
    Filed: February 22, 2022
    Publication date: August 24, 2023
    Inventors: Thomas Frewen, Hala Mostafa, Michael D. Dubois, Stephen K. Freitag
  • Publication number: 20220276128
    Abstract: A method and system of providing customizable service for an asset. The method including generating a predictive model for each asset of a fleet, each predictive model based on an operational profile for the asset and including a probability density function associated with the operational durability of the asset, establishing a maintenance strategy associated with the asset, and combining each of the predictive models to generate a compound fleet performance model, the fleet performance model including a combined probability density function. The method also includes collecting actual asset performance and maintenance data to generate actual asset metrics, determining a fleet performance profile based on the actual asset metrics indicative of a health assessment of the fleet, comparing the predicted fleet performance with the actual fleet performance, and ascertaining actionable choices for managing the assets based on a deviation of the predicted and actual fleet performance.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 1, 2022
    Inventors: Thomas A. Frewen, Ozgur Erdinc, Hala Mostafa, Mei Chen, Draguna Vrabie
  • Patent number: 11333578
    Abstract: A method and system of providing customizable service for an asset. The method including generating a predictive model for each asset of a fleet, each predictive model based on an operational profile for the asset and including a probability density function associated with the operational durability of the asset, establishing a maintenance strategy associated with the asset, and combining each of the predictive models to generate a compound fleet performance model, the fleet performance model including a combined probability density function. The method also includes collecting actual asset performance and maintenance data to generate actual asset metrics, determining a fleet performance profile based on the actual asset metrics indicative of a health assessment of the fleet, comparing the predicted fleet performance with the actual fleet performance, and ascertaining actionable choices for managing the assets based on a deviation of the predicted and actual fleet performance.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: May 17, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Thomas A. Frewen, Ozgur Erdinc, Hala Mostafa, Mei Chen, Draguna Vrabie
  • Patent number: 10607426
    Abstract: Systems and methods for the configuration of service policies for aircraft fleets and gas turbine engines are disclosed. One or more engine performance profiles may be generated based on historical engine performance data. The historical engine performance data may be retrieved based on one or more engine service parameters. A fleet performance profile may be generated based on the engine performance profiles. The engine service parameters may be varied to generate a configured engine performance profile. A configured fleet performance profile may be generated based on the configured engine performance profile.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: March 31, 2020
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Thomas A. Frewen, Hala Mostafa, Ozgur Erdinc, Draguna Vrabie, Mei Chen
  • Patent number: 10583988
    Abstract: The present disclosure provides a flexibly positioned power drive unit (“PDU) system. The flexibly positioned PDU system may comprise a flexibly positioned PDU comprising a PDU hinged portion and a track coupled to the flexibly positioned PDU, wherein the flexibly positioned PDU is configured to move along a cargo deck and the PDU hinged portion is configured to move a cargo unit from a first location to a second location via the track.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 10, 2020
    Assignee: GOODRICH CORPORATION
    Inventors: Lawrence E. Zeidner, Kunal Srivastava, Thomas A. Frewen
  • Patent number: 10254768
    Abstract: An aspect includes space partitioning for vehicle motion planning. A plurality of obstacle data is analyzed to determine a plurality of obstacle locations in a configuration space of a vehicle. A partitioning of the configuration space is performed to compute a skeletal partition representing a plurality of obstacle boundaries based on the obstacle locations. The skeletal partition is used to preferentially place a plurality of samples by a sampling-based motion planner. At least one obstacle-free path is output by the sampling-based motion planner based on the samples.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: April 9, 2019
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Harshad S. Sane, Jason C. Derenick, Brendan J. Englot, Thomas A. Frewen
  • Publication number: 20190088047
    Abstract: Systems and methods for the configuration of service policies for aircraft fleets and gas turbine engines are disclosed. One or more engine performance profiles may be generated based on historical engine performance data. The historical engine performance data may be retrieved based on one or more engine service parameters. A fleet performance profile may be generated based on the engine performance profiles. The engine service parameters may be varied to generate a configured engine performance profile. A configured fleet performance profile may be generated based on the configured engine performance profile.
    Type: Application
    Filed: October 23, 2017
    Publication date: March 21, 2019
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Thomas A. Frewen, Hala Mostafa, Ozgur Erdinc, Draguna Vrabie, Mei Chen
  • Publication number: 20190086291
    Abstract: A method and system of providing customizable service for an asset. The method including generating a predictive model for each asset of a fleet, each predictive model based on an operational profile for the asset and including a probability density function associated with the operational durability of the asset, establishing a maintenance strategy associated with the asset, and combining each of the predictive models to generate a compound fleet performance model, the fleet performance model including a combined probability density function. The method also includes collecting actual asset performance and maintenance data to generate actual asset metrics, determining a fleet performance profile based on the actual asset metrics indicative of a health assessment of the fleet, comparing the predicted fleet performance with the actual fleet performance, and ascertaining actionable choices for managing the assets based on a deviation of the predicted and actual fleet performance.
    Type: Application
    Filed: March 21, 2018
    Publication date: March 21, 2019
    Inventors: Thomas A. Frewen, Ozgur Erdinc, Hala Mostafa, Mei Chen, Draguna Vrabie
  • Publication number: 20170308102
    Abstract: An aspect includes space partitioning for vehicle motion planning. A plurality of obstacle data is analyzed to determine a plurality of obstacle locations in a configuration space of a vehicle. A partitioning of the configuration space is performed to compute a skeletal partition representing a plurality of obstacle boundaries based on the obstacle locations. The skeletal partition is used to preferentially place a plurality of samples by a sampling-based motion planner. At least one obstacle-free path is output by the sampling-based motion planner based on the samples.
    Type: Application
    Filed: October 28, 2015
    Publication date: October 26, 2017
    Applicant: Sikorsky Aircraft Corporation
    Inventors: Harshad S. Sane, Jason C. Derenick, Brendan J. Englot, Thomas A. Frewen
  • Patent number: 9798007
    Abstract: A method of operating an obstacle data model construction system of an aircraft is provided. With a vehicle moving through a vehicle obstacle space from a first to a second position, the method includes scanning the vehicle obstacle space at the first and second positions, generating first and second boundary data sets from results of the scanning at the first and second positions, respectively, and deriving first and second shrouded regions from the first and second boundary data sets, respectively. The method further includes identifying a high confidence occupancy region from intersecting portions of the first and second shrouded regions or identifying an occupancy region from a union of the first and second shrouded regions.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 24, 2017
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Harshad S. Sane, Thomas A. Frewen
  • Patent number: 9620022
    Abstract: A method of route planning for a vehicle proceeding from a current location to a destination in a planning space is provided. The method includes generating a destination-rooted tree from global information that provides cost-to-go routing to the destination from multiple locations in the planning space, generating a vehicle-rooted tree using local information from the current location out to a sensing horizon and determining a local destination at the sensing horizon. The local destination corresponds to minimal cost-to-go routing obtained from the destination-rooted tree.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: April 11, 2017
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Harshad S. Sane, Thomas A. Frewen, Brendan J. Englot
  • Publication number: 20160216377
    Abstract: A method of operating an obstacle data model construction system of an aircraft is provided. With a vehicle moving through a vehicle obstacle space from a first to a second position, the method includes scanning the vehicle obstacle space at the first and second positions, generating first and second boundary data sets from results of the scanning at the first and second positions, respectively, and deriving first and second shrouded regions from the first and second boundary data sets, respectively. The method further includes identifying a high confidence occupancy region from intersecting portions of the first and second shrouded regions or identifying an occupancy region from a union of the first and second shrouded regions.
    Type: Application
    Filed: June 30, 2015
    Publication date: July 28, 2016
    Inventors: Harshad S. Sane, Thomas A. Frewen
  • Publication number: 20150356875
    Abstract: A method of route planning for a vehicle proceeding from a current location to a destination in a planning space is provided. The method includes generating a destination-rooted tree from global information that provides cost-to-go routing to the destination from multiple locations in the planning space, generating a vehicle-rooted tree using local information from the current location out to a sensing horizon and determining a local destination at the sensing horizon. The local destination corresponds to minimal cost-to-go routing obtained from the destination-rooted tree.
    Type: Application
    Filed: June 2, 2015
    Publication date: December 10, 2015
    Inventors: Harshad S. Sane, Thomas A. Frewen, Brendan J. Englot