Filed / Tracking Torque inconsistency with off-center thruster placement [00479]

Discussion in 'Tracking / Filed' started by Garaman, Dec 20, 2021.

  1. Garaman

    Garaman Captain

    Joined:
    Aug 23, 2020
    Messages:
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    Likes Received:
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    Build: 1.7 3632
    Mode: Creative / Survival
    Mode: Single Player / Multi Player

    Reproducibility: Always
    Severity: Minor

    Type: Thruster Torque

    Summary: With certain asymmetrical thruster layouts you can see an order-of-magnitude difference in torque on all axes depending on which side the thrusters are placed

    Description:
    This is a bit of an odd one but might indicate a larger problem, especially when making asymmetrical builds. I set out to make a minimalist micro CV that uses only 6 small thrusters, with the thrusters on each axis placed as far to the outside corners of the build as possible to maximize torque so I don't require an RCS. However, if the forward/backward and up/down thrusters are not placed on the same side of the build you see a 10x drop in torque generation on all axes. As I understand it the only torque generation difference should be due to a slight center-of-mass shift, but this seems extreme for a minor 2-ton weight shift on a 60 ton build.

    Steps to Reproduce
    :
    1) Load the two attached EPBs in any scenario. These two ships are identical except for the placement of the blue forward/backward thrusters.
    2) Examine the torque statistics of Test A. Turn values should be around 150 deg/s on each axis.
    3) Examine the torque statistics of Test B. Turn values should be around 12 deg/s on each axis.

    Screenshots, Crash Logs, any other Relevant Information or Download links:

    The two ships, showing the different blue forward/backward thruster placement:
    upload_2021-12-20_1-56-51.png

    Torque statistics for the ship on the left:
    upload_2021-12-20_1-57-32.png

    Torque statistics for the ship on the right:
    upload_2021-12-20_1-57-57.png
     

    Attached Files:

    #1
    Last edited: Dec 20, 2021

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