Method and device for optimizing a climb phase of an aircraft, in particular in terms of fuel consumption

A method for optimizing a climb phase of an aircraft comprising determining an optimized DTflex value corresponding to a temperature differential used to control thrust of the aircraft, the method comprising at least a sequence of steps implemented by an avionic computer repeatedly during the climb phase of:

• an acquiring step for acquiring current values of input parameters including at least a weight of the aircraft, a speed of the aircraft, an altitude of the aircraft and a reference temperature;
• a determining step for determining a current optimized DTflex value from the current values of the input parameters acquired in the acquiring step and from optimized DTflex values recorded in a database integrated into the avionic computer, the database having been created beforehand by associating an optimized DTflex value with each combination of input parameters for a predefined number of combinations of input parameters;
• and
• a transmitting step for transmitting the current optimized DTflex value determined in the determining step to a user system capable of using the current optimized DTflex value to control the thrust of the aircraft.