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Bug #18266

The centers of mass and drag of the FL-C1000 Fuel Tank are dramatically off-center. Suggested fix inside.

Added by SamHall over 6 years ago. Updated over 6 years ago.

Status:
Closed
Severity:
Low
Assignee:
-
Category:
Parts
Target version:
-
Start date:
03/29/2018
% Done:

100%

Version:
1.4.2
Platform:
Windows
Expansion:
Making History
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

Bug description:

The centers of mass and drag of the FL-C1000 Fuel Tank are located distinctly to the right of the tank's centerline. See attached screenshot A.

Suggested fix:

Change the .cfg lines that read

CoMOffset = 0.2, -1.0, 0.0
CoPOffset = 0.25, 0.5, 0.0

to instead read

CoMOffset = 0.0, -1.0, 0.0
CoPOffset = 0.0, 0.5, 0.0

See attached screenshot B.

screenshotA.png (1010 KB) screenshotA.png before fix SamHall, 03/29/2018 02:33 AM
screenshotB.png (1010 KB) screenshotB.png after fix SamHall, 03/29/2018 02:33 AM
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History

#1 Updated by jclovis3 over 6 years ago

That most certainly explains the weird spiral spin they have coming off. I have to concur this seems to exist in my install as well.

#2 Updated by Tomator over 6 years ago

The tank isn't conical so the offset may be desired; along Z axis and not X.

#3 Updated by Squelch over 6 years ago

  • Status changed from New to Being Worked On
  • % Done changed from 0 to 30

#5 Updated by fourfa2 over 6 years ago

I believe there was a axis transposition error. The following:

@PART[Size1p5_Tank_05]:FINAL {
@CoMOffset = 0.0, -1.0, 0.2
@CoPOffset = 0.0, 0.5, 0.25
}

Centers the CoM on the side-to-side axis, and also positions it in a logical place in depth. This simply swaps the values in the stock first and third fields. More discussion here: https://forum.kerbalspaceprogram.com/index.php?/topic/172971-the-soyuz-side-booster-tank-has-an-error-in-its-config/&tab=comments#comment-3338697

#6 Updated by klesh over 6 years ago

Still offset CoM in 1.4.3

#7 Updated by TriggerAu over 6 years ago

  • Status changed from Being Worked On to Resolved
  • % Done changed from 30 to 100

This one is fixed in 1.4.4

#8 Updated by joshua.collins over 6 years ago

  • Status changed from Resolved to Closed

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