Patents by Inventor Hasse Persson

Hasse Persson 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: 8249761
    Abstract: The invention relates to a method for calculating a flight path avoiding a collision with the ground when an aircraft dives towards the ground. The method includes receiving signals including information of a dive angle of the aircraft in relation to the imaginary ground plane, and a present roll angle of the aircraft, and calculating a flight path that avoids collision with the ground on the basis of the information. The calculation includes calculating a need for rolling the aircraft based on the present roll angle, and calculating a need for changing the direction of the velocity vector of the aircraft so that the change has a component in an upward direction in relation to the reference frame of the aircraft.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: August 21, 2012
    Assignee: Saab AB
    Inventors: Hasse Persson, Jonas Lovgren
  • Patent number: 7711484
    Abstract: A method and a system for avoiding collisions between aircraft. The method includes computing a default fly out maneuver regarding how the aircraft shall be maneuvered during a fly out action, predicting a fly away path including a prediction of the position of the aircraft during the fly out maneuver, sending information about the own fly away path to the other aircrafts, receiving information about fly away paths from the other aircrafts, detecting an approaching collision, and activating the fly out maneuver upon detecting an approaching collision. The method further includes carrying out the following steps after activation the fly out maneuver: receiving the current position of the aircraft, and calculating a compensated fly out maneuver for the aircraft based on the current position of the aircraft, the previously predicted position, and the default fly out maneuver.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: May 4, 2010
    Assignee: SAAB AB
    Inventors: Henrik Hammarlund, Bengt-Goran Sundqvist, Hasse Persson, Jonas Lovgren
  • Publication number: 20100010693
    Abstract: The invention relates to a method for calculating a flight path avoiding a collision with the ground when an aircraft dives towards the ground. The method includes receiving signals including information of a dive angle of the aircraft in relation to the imaginary ground plane, and a present roll angle of the aircraft, and calculating a flight path that avoids collision with the ground on the basis of the information. The calculation includes calculating a need for rolling the aircraft based on the present roll angle, and calculating a need for changing the direction of the velocity vector of the aircraft so that the change has a component in an upward direction in relation to the reference frame of the aircraft.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Applicant: SAAB AB
    Inventors: Hasse Persson, Jonas Lövgren
  • Patent number: 7571878
    Abstract: A method for calculating a flight path avoiding a collision with the ground when an aircraft dives towards the ground. The method includes receiving signals including information of a dive angle of the aircraft in relation to the imaginary ground plane, and a present roll angle of the aircraft, and calculating a flight path that avoids collision with the ground on the basis of the information. The calculation includes calculating a need for rolling the aircraft based on the present roll angle, and calculating a need for changing the direction of the velocity vector of the aircraft so that the change has a component in an upward direction in relation to the reference frame of the aircraft.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: August 11, 2009
    Assignee: SAAB AB
    Inventors: Hasse Persson, Jonas Lövgren
  • Publication number: 20060290532
    Abstract: The invention relates to a method for calculating a flight path avoiding a collision with the ground when an aircraft dives towards the ground. The method comprises receiving signals comprising information of a dive angle of the aircraft in relation to the imaginary ground plane, and a present roll angle of the aircraft, and calculating a flight path that avoids collision with the ground on the basis of said information, the calculation comprising calculating a need for rolling the aircraft based on the present roll angle, and calculating a need for changing the direction of the velocity vector of the aircraft so that the change has a component in an upward direction in relation to the reference frame of the aircraft.
    Type: Application
    Filed: May 18, 2006
    Publication date: December 28, 2006
    Applicant: SAAB AB
    Inventors: Hasse Persson, Jonas Lovgren
  • Publication number: 20060293855
    Abstract: A method and a system for avoiding collisions between aircrafts. The method comprises: computing a default fly out maneuver regarding how the aircraft shall be maneuvered during a fly out action, predicting a fly away path comprising a prediction of the position of the aircraft during the fly out maneuver, sending information about the own fly away path to the other aircrafts, receiving information about fly away paths from the other aircrafts, detecting an approaching collision, and activating the fly out maneuver upon detecting an approaching collision. The method further comprises carrying out the following steps after activation the fly out maneuver: receiving the current position of the aircraft, and calculating a compensated fly out maneuver for the aircraft based on the current position of the aircraft, said previously predicted position, and the default fly out maneuver.
    Type: Application
    Filed: August 29, 2005
    Publication date: December 28, 2006
    Applicant: SAAB AB
    Inventors: Henrik Hammarlund, Bengt-Goran Sundqvist, Hasse Persson, Jonas Lovgren