I have an assignment where I have to simulate a Mars re-entry using the Viking capsule. I have finished it but now I want to go further and try to make my capsule glide. For this I need to enslave the path angle which needs the moment of inertia $J$ according to the formulas given by my teacher.

After reading a lot of reports by NASA, I'm beginning to despair of finding that moment of inertia... Maybe I can calculate it using simplification but my domain is more computer science than mechanics.

My question is: Where can I find the moment of inertia? If I need to calculate it, how to do this?


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From Viking '75 Spacecraft Design and Test Summary Volume 1: Lander Design page 76

  • $\begingroup$ Perfect thanks! $\endgroup$ Apr 26 '20 at 17:50
  • 1
    $\begingroup$ @LouisEtienne You are most welcome, and welcome to space stack exchange! $\endgroup$ Apr 26 '20 at 17:57

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