Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Spacecraft Attitude Control Simulation

  1. Mar 21, 2006 #1
    I'm building a spacecraft attitude control simulation and I'm looking for some references to help me build a realistic mathematical model. Could someone please help me? I'm testing an AI library I built and that is requiring a lot of research in itself.

    Thanks for your time!
    Jeff
     
  2. jcsd
  3. Mar 22, 2006 #2

    pervect

    User Avatar
    Staff Emeritus
    Science Advisor

    You'll definitely need to understand the moment of inertia tensor

    http://hyperphysics.phy-astr.gsu.edu/hbase/mi.html
    http://scienceworld.wolfram.com/physics/MomentofInertia.html

    You can probably assume that your thrusters give a constant torque along some particular axis when they are on, and no torque when they are off.

    A simple model would be that the axis that the torque was generated around would be one of the principal axes of the moment of inertia tensor, a more general model would be that the torque was generated along an arbitrary axis.

    You may also need to take a look at Euler's equations, to convert the equations of motion from body-centered to a fixed coordinate system

    http://en.wikipedia.org/wiki/Euler's_equations

    For a textbook reference, try Goldstein's "Classical Mechanics", look up "Euler's equations".
     
  4. Mar 22, 2006 #3
    Thanks pervect! :)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?