Abstract:
A method for creating a vertical trajectory profile of an aircraft by optimization of a criterion representative of a flight cost, comprises: performing a first iterative computation of a profile free of altitude constraints as long as a condition dependent on the criterion is not reached, replacing each free level of the constraint-free profile with a permitted level so as to generate an initial constrained profile comprising a plurality of permitted levels, and, for each level, an altitude change point and a plurality of speeds, and performing a second iterative computation of a profile in which the altitude levels to be reached remain constant, equal to the initial permitted levels of the initial constrained profile, as long as a condition dependent on the criterion is not reached.
Abstract:
A computer equipment comprises a trackball used to point to objects on a screen of the equipment. A method for driving the computer equipment is also provided. The trackball comprises a moving part and a body inside which the moving part can be displaced, the computer being configured to display at least one object and a pointer on the screen. The trackball comprises means making it possible to exert a tangential force on the moving part, means driven by the computer. The computer is configured to modulate the force according to the shape of the object displayed and the position of the pointer relative to the object.