Patents by Inventor Panagiotis Giannakakis

Panagiotis Giannakakis 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: 11840338
    Abstract: A method for managing the propulsive power of an aircraft, the aircraft extending longitudinally along an axis X from the rear forwards and comprising at least two lateral propulsion systems each comprising a fan, each lateral propulsion system having a fan rotation speed N2 and at least one rear propulsion system configured to ingest a boundary layer of said aircraft, the rear propulsion system comprising a fan having a fan rotation speed N3, the management system comprising, during a cruising phase P4, a step of adjusting the rotation speed N3 of the rear propulsion system according to the following formula N3=a*N2 in which a is a constant.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: December 12, 2023
    Assignee: SAFRAN
    Inventors: Khaled Zarati, Panagiotis Giannakakis
  • Publication number: 20230150688
    Abstract: A method determines the angular setting (?_2) of an annular row of stator vanes arranged downstream of a pusher propeller of a propulsion system with a longitudinal axis. The annular row of stator vanes receives an air flow having a velocity (V2) including a longitudinal component (Viz) and a tangential component (V_i?) associated with the velocity of gyration generated by the pusher propeller. The method includes the steps of establishing a theoretical model of the pusher propeller using a power (P1) and a mechanical speed (N1) associated with said pusher propeller, and flight conditions that include a velocity of the airflow incident on the pusher propeller, the altitude of said propulsion system and ambient temperature. The method further includes the step of determining an angular setting (?_1) of the pusher propeller from the theoretical model.
    Type: Application
    Filed: April 9, 2021
    Publication date: May 18, 2023
    Applicant: SAFRAN
    Inventors: Panagiotis GIANNAKAKIS, William Henri Joseph RIERA
  • Publication number: 20230103519
    Abstract: The invention relates to a method for controlling a turbomachine comprising a gas generator, the turbomachine comprising an electric machine forming a device for injecting torque into/removing torque from one of the low pressure/high pressure rotation shafts of said gas generator. Said method comprises a step of implementing a fuel control loop in order to determine a fuel flow setpoint into the combustion chamber, and comprising, in the event that at least one operability limit is reached, determining a corrected fuel flow setpoint, said corrected fuel flow setpoint exhibiting a difference in relation to the setpoint. Said method also comprises a step of implementing a torque control loop in order to determine a torque setpoint for the electric machine, and comprising determining a torque correction quantity as a function of said difference, said torque setpoint being determined as a function of said torque correction quantity.
    Type: Application
    Filed: March 2, 2021
    Publication date: April 6, 2023
    Applicant: SAFRAN
    Inventors: Nawal JALJAL, Panagiotis GIANNAKAKIS
  • Publication number: 20210188455
    Abstract: A method for managing the propulsive power of an aircraft, the aircraft extending longitudinally along an axis X from the rear forwards and comprising at least two lateral propulsion systems each comprising a fan, each lateral propulsion system having a fan rotation speed N2 and at least one rear propulsion system configured to ingest a boundary layer of said aircraft, the rear propulsion system comprising a fan having a fan rotation speed N3, the management system comprising, during a cruising phase P4, a step of adjusting the rotation speed N3 of the rear propulsion system according to the following formula N3=a*N2 in which a is a constant.
    Type: Application
    Filed: July 18, 2019
    Publication date: June 24, 2021
    Applicant: SAFRAN
    Inventors: Khaled Zarati, Panagiotis Giannakakis