Patent ID: 8660720
Filing Date: 2014-02-25
Classification: G05D

Abstract:
1. A method for determining at least one auxiliary takeoff trajectory of an aircraft that maximizes an allowable takeoff weight of the aircraft, wherein the auxiliary takeoff trajectory includes a curvilinear lateral profile and diverges at a divergence point from a standard takeoff trajectory, wherein the standard takeoff trajectory includes a lateral profile and is defined for an aircraft having all engines operating normally, wherein the auxiliary takeoff trajectory is defined for an aircraft having at least one engine being defective, and both the standard takeoff trajectory and the at least one auxiliary takeoff trajectory configured to allow for flight over obstacles located along the respective lateral profiles, the method comprising: a) generating initial data with an initial data generation device on the aircraft, the initial data including the lateral profile of the standard takeoff trajectory, data relating to the environment of the takeoff airport, and nominal takeoff conditions; b) automatically determining with an auxiliary trajectory determination device on the aircraft the auxiliary takeoff trajectory and first obstacles likely to be flown over for the nominal takeoff conditions, based on the initial data and without action by an operator of the aircraft, the auxiliary trajectory determination device also optimizing the auxiliary takeoff trajectory to take into consideration various takeoff conditions and determining second obstacles likely to be flown over for non-nominal takeoff conditions; and c) displaying with a display device on the aircraft the auxiliary takeoff trajectory and the first and second obstacles to an operator.