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Bug #6965

Ship destruction or strange effects on deployment to Launchpad when root part is outside the circle on VAB floor

Added by Kasuha about 8 years ago. Updated over 7 years ago.

Status:
Closed
Severity:
Low
Assignee:
-
Category:
Physics
Target version:
Start date:
02/14/2016
% Done:

100%

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

Description

This happens time to time, e.g. when constructing missiles aimed at the Runway island, or when pre-pitching a really long ship for gravity turn.

When a ship is deployed on Launchpad with its root part outside the circle on the VAB floor, it is deployed at position corresponding to its VAB placement at first, but as soon as physics is started, it abruptly changes position or (more often) explodes.

If the root part is changed to any part inside the circle, even if the position of the ship does not change at all, it is deployed with no problems.

Reproduction steps:

  • Enter VAB
  • Load Kerbal X (or any other suitable ship)
  • Move and/or rotate it so its root part is outside the circle
  • Deploy it on launchpad
  • Observe the behavior (see attached screenshots for examples)
  • Revert to VAB
  • Change root to a part that stays inside the circle
  • Turn the ship the same way
  • Deploy it on launchpad
  • Observe the behavior

There are no noticable messages about it in the log. The destruction starts with the following (note: the screenshot is taken when the ship is already deployed on launchpad but still intact)

[LOG 17:39:27.846] SCREENSHOT!!
[LOG 17:39:28.868] [Kerbal X]: ground contact! - error: -4.715m
[LOG 17:39:28.869] Unpacking Kerbal X
[LOG 17:39:28.907] [00:00:00]: Structural failure on linkage between Rockomax X200-32 Fuel Tank and Rockomax X200-32 Fuel Tank.
[LOG 17:39:28.924] [00:00:00]: Structural failure on linkage between Hydraulic Detachment Manifold and Rockomax X200-32 Fuel Tank.
...

screenshot17.png (1.97 MB) screenshot17.png [email protected] Kasuha, 02/14/2016 04:42 PM
screenshot18.png (1.47 MB) screenshot18.png [email protected] Kasuha, 02/14/2016 04:43 PM
screenshot19.png (1.47 MB) screenshot19.png [email protected] Kasuha, 02/14/2016 04:44 PM
screenshot20.png (2.02 MB) screenshot20.png [email protected] Kasuha, 02/14/2016 04:45 PM
screenshot21.png (1.46 MB) screenshot21.png [email protected] Kasuha, 02/14/2016 04:45 PM
screenshot22.png (1.62 MB) screenshot22.png [email protected] Kasuha, 02/14/2016 04:46 PM
output_log.txt (617 KB) output_log.txt [email protected] Kasuha, 02/14/2016 04:56 PM
KSP.log (254 KB) KSP.log [email protected] Kasuha, 02/14/2016 04:56 PM
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History

#2 Updated by TriggerAu over 7 years ago

  • Status changed from New to Needs Clarification

#3 Updated by Squelch over 7 years ago

  • Status changed from Needs Clarification to Ready to Test
  • Target version set to 1.2.0
  • % Done changed from 0 to 80

This should have been fixed in KSP 1.1.3.

Please retest in KSP 1.2

#4 Updated by Kasuha over 7 years ago

Works for me in 1.2

#5 Updated by JPLRepo over 7 years ago

  • Status changed from Ready to Test to Closed
  • % Done changed from 80 to 100

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