The design of advanced guidance and control (G&C) systems for space/aerospace vehicles
has received a large amount of attention worldwide during the last few decades and will …

In this paper, we provide a survey on available numerical approaches for solving low-thrust
trajectory optimization problems. First, a general mathematical framework based on hybrid …

Variational approach to optimal control theory converts trajectory optimization problems into
two-or multiple-point boundary-value problems, which consist of costates (ie, Lagrange …

The problem of optimally designing an interplanetary trajectory for a space mission is
considered in this paper. To tackle the extreme non-linearity of the search space, a case …

Abstract Comet Interceptor (Comet-I) was selected in June 2019 as the first ESA F-Class
mission. In 2029+, Comet-I will hitch a ride to a Sun-Earth L2 quasi-halo orbit, as a co …

As an innovative spacecraft propellantless propulsion technology, the electric sail can
generate electric fields that interact with the solar wind, generating continuous propulsive …

PROCYON is the world's first deep-space micro spacecraft launched on December 3, 2014,
as a secondary payload on the launch of JAXA's Hayabusa2 spacecraft. The mission …

We present a trajectory concept for a small mission to the four inner large satellites of Saturn.
Leveraging the high efficiency of electric propulsion, the concept enables orbit insertion …

The optimal design of orbit raising trajectories is formulated within a multi-objective hybrid
optimal control framework. The spacecraft can be equipped with chemical, electric or …

Design of low-thrust trajectories with realistic solar electric propulsion (SEP) models is
challenging since 1) engine's thrust depends on the available power, which itself depends …