Patents by Inventor David M. Bostwick

David M. Bostwick 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).

  • Multi-engine coordination during gas turbine engine motoring
    Patent number: 11674411
    Abstract: A system is provided for multi-engine coordination of gas turbine engine motoring in an aircraft. The system includes a controller operable to determine a motoring mode as a selection between a single engine dry motoring mode and a multi-engine dry motoring mode based on at least one temperature of a plurality of gas turbine engines and initiate dry motoring based on the motoring mode.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Subhradeep Chowdhury, David M. Bostwick, David Gelwan, Frederick M. Schwarz
  • MULTI-ENGINE COORDINATION DURING GAS TURBINE ENGINE MOTORING
    Publication number: 20210324758
    Abstract: A system is provided for multi-engine coordination of gas turbine engine motoring in an aircraft. The system includes a controller operable to determine a motoring mode as a selection between a single engine dry motoring mode and a multi-engine dry motoring mode based on at least one temperature of a plurality of gas turbine engines and initiate dry motoring based on the motoring mode.
    Type: Application
    Filed: June 28, 2021
    Publication date: October 21, 2021
    Inventors: Subhradeep Chowdhury, David M. Bostwick, David Gelwan, Frederick M. Schwarz
  • Multi-engine coordination during gas turbine engine motoring
    Patent number: 11047257
    Abstract: A system is provided for multi-engine coordination of gas turbine engine motoring in an aircraft. The system includes a controller operable to determine a motoring mode as a selection between a single engine dry motoring mode and a multi-engine dry motoring mode based on at least one temperature of a plurality of gas turbine engines and initiate dry motoring based on the motoring mode.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 29, 2021
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Subhradeep Chowdhury, David M. Bostwick, David Gelwan, Frederick M. Schwarz
  • SYSTEM AND METHOD FOR ROTATING A GAS TURBINE ENGINE DURING A MOTORING CYCLE
    Publication number: 20190040799
    Abstract: Systems and methods for rotating a gas turbine engine during a motoring cycle are provided. The system may comprise a controller in electronic communication with an auxiliary power unit (APU), a starter air valve, and a gas turbine engine. The APU may supply compressed air to the starter air valve which may supply the compressed air to an engine starter in mechanical communication with the engine. The rotational speed of the engine may be controlled by the engine starter based on the pressure of the compressed air received from the starter air valve. The controller may be configured to control airflow and air pressure through the system, by modulating the airflow from the APU and/or from the starter air valve.
    Type: Application
    Filed: August 7, 2017
    Publication date: February 7, 2019
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: David Gelwan, David M. Bostwick, Jesse W. Clauson
  • MULTI-ENGINE COORDINATION DURING GAS TURBINE ENGINE MOTORING
    Publication number: 20180023413
    Abstract: A system is provided for multi-engine coordination of gas turbine engine motoring in an aircraft. The system includes a controller operable to determine a motoring mode as a selection between a single engine dry motoring mode and a multi-engine dry motoring mode based on at least one temperature of a plurality of gas turbine engines and initiate dry motoring based on the motoring mode.
    Type: Application
    Filed: July 21, 2017
    Publication date: January 25, 2018
    Inventors: Subhradeep Chowdhury, David M. Bostwick, David Gelwan, Frederick M. Schwarz