Nonlinear analysis of spacecraft thermal models

Details Nonlinear analysis of spacecraft thermal models Nonlinear analysis of spacecraft thermal models

2010-10-22

arxiv.org/abs/1010.4707v1

Nonlinear Dynamics 65 (2011) 283-300

Nonlinear Sciences

Chaotic Dynamics

29 pages, 4 figures

Scientific paper

10.1007/s11071-010-9890-4

We study the differential equations of lumped-parameter models of spacecraft thermal control. Firstly, we consider a satellite model consisting of two isothermal parts (nodes): an outer part that absorbs heat from the environment as radiation of various types and radiates heat as a black-body, and an inner part that just dissipates heat at a constant rate. The resulting system of two nonlinear ordinary differential equations for the satellite's temperatures is analyzed with various methods, which prove that the temperatures approach a steady state if the heat input is constant, whereas they approach a limit cycle if it varies periodically. Secondly, we generalize those methods to study a many-node thermal model of a spacecraft: this model also has a stable steady state under constant heat inputs that becomes a limit cycle if the inputs vary periodically. Finally, we propose new numerical analyses of spacecraft thermal models based on our results, to complement the analyses normally carried out with commercial software packages.

Affiliated with

Also associated with

No associations

Rating

Nonlinear analysis of spacecraft thermal models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonlinear analysis of spacecraft thermal models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear analysis of spacecraft thermal models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-660184