JAQAR Astrodynamics Package - ESA

DATO Problem ModellingDescent Trajectory (3/3)Optimised Flight Parameters• Depending from the user selection, altitude or velocity to reach at theend of each phase is considered to optimise the duration of the descenttrajectory.• True anomaly at start of PDI phase is the initial condition to optimise theinitiation of the powered descent.• Initial angle of attack and its rate of variation are instead optimalparameters for the control law, guiding the vehicle to land.• An optimal descent trajectory is achieved, minimising the DE Fitnessdescent function, which principally acts on the difference between theflight and the maximum MECO velocity.