A Modelica Library for Spacecraft Thermal Analysis

Abstract

In spacecraft missions it is vital to maintain all spacecraft components within their required temperature limits. Thus, a model incorporating all main heat fluxes acting on the spacecraft is necessary to allow for the design of a thermal control subsystem. This paper introduces the thermal space systems library which implements common models of radiation and thermal components of a spacecraft. Special effort is put into the calculations of the angles describing the orientation of the spacecraft with respect to sun and earth. Issues occurring due to the recalculation of the angles in each time step are shown and methods for their determinations are given.

Simulation of the on-orbit construction of structural variable modular spacecraft by robots

“…The models consider the position of the sun, moon and earth for the shadows as well as the spacecraft attitude. The implementation is based on (Posielek 2018) but is extended to be compatible with the tensor body concept.…”

Attitude Reconstruction of a Spacecraft From Temperature Measurements in Solar Eclipse Analysis and Observer Design for a Not Globally Observable Non-Linear System

“…We use the model and notations of [14] based on the work of [15] and [16]. The dynamics of the temperature are assumed to be governed solely by environmental heat.…”