#97 Pitch swings during launch

7.0 beta
closed-fixed
Tschachim
None
5
2007-07-12
2006-06-23
Mark Grant
No

At some points during the launch we get sizable pitch
swings from the autopilot: I think it's during the
first stage when the autopilot switches to and from the
angle of attack following mode. I'm not sure whether
this is an issue with the autopilot or our pitch
program definition, but it's a little unrealistic.

Discussion

  • Tschachim
    Tschachim
    2006-06-23

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    user_id=1204264

    Yes, as far as I remember the default pitch table is
    calibrated for the Apollo 11 weights, thrust, ISP etc.
    (You should get that bug only when NOT launching Apollo
    11). So as long as we stay with a pitch table steering we
    need to do mission specific (or Saturn configuration
    specific) pich tables.

     
  • Tschachim
    Tschachim
    2007-07-12

    • assigned_to: nobody --> tschachim
    • status: open --> closed-fixed
     
  • Tschachim
    Tschachim
    2007-07-12

    Logged In: YES
    user_id=1204264
    Originator: NO

    I improved the control gains, should be fixed now.