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Bug #5238

Low Heat Tolerance Asteroids

Added by Tempist almost 9 years ago. Updated over 7 years ago.

Status:
Closed
Severity:
Low
Assignee:
-
Category:
Physics
Target version:
-
Start date:
07/14/2015
% Done:

100%

Version:
1.0.4
Platform:
Win32
Expansion:
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

As seen in the following forum thread E-Class Asteroids appear to have a low heat tolerance in Kerbin upper atmosphere. While the forum thread describes a puller, the craft I am using is a pusher.

Screen shots of the Aerobraking maneuver with corresponding thermal gauges have are attached showing that even 63000m the asteroid begins to over heat. Granted the speed is in excess of 3200m/s but the Asteroid is approx 1550t. On previous runs the asteroid exploded when descending below 45000m while the attached craft remained thermally stable.

2015-07-13_00004.jpg (130 KB) 2015-07-13_00004.jpg Flight path Tempist, 07/14/2015 03:30 AM
2015-07-14_00002.jpg (97.2 KB) 2015-07-14_00002.jpg Final Decent Tempist, 07/14/2015 03:45 AM
2015-07-14_00005.jpg (101 KB) 2015-07-14_00005.jpg Heating Starting Tempist, 07/14/2015 03:46 AM
2015-07-14_00009.jpg (127 KB) 2015-07-14_00009.jpg Thermal Transfer Tempist, 07/14/2015 03:46 AM
2015-07-14_00013.jpg (141 KB) 2015-07-14_00013.jpg Atmo Effects Tempist, 07/14/2015 03:47 AM
2015-07-14_00017.jpg (128 KB) 2015-07-14_00017.jpg Burning Tempist, 07/14/2015 03:47 AM
2015-07-14_00019.jpg (116 KB) 2015-07-14_00019.jpg Acent with final thermals Tempist, 07/14/2015 03:48 AM
Pre Aerobreaking.sfs (1.2 MB) Pre Aerobreaking.sfs Pre-Descent Save Tempist, 07/14/2015 03:49 AM
Hi Temp 1.sfs (1.21 MB) Hi Temp 1.sfs Save file from Outer Kerbin in which you can adjust PE height with ease. Tempist, 07/14/2015 03:49 AM
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Related issues

Related to Kerbal Space Program - Feedback #5939: Asteroid surface temp during atmospheric re-entry too lowNeeds Clarification11/13/2015
Has duplicate Kerbal Space Program - Bug #5322: asteroid atmospheric heating bugDuplicate08/13/2015

History

#1 Updated by Squelch almost 9 years ago

  • Platform Win32 added
  • Platform deleted (Windows)

#2 Updated by Comwarrior69 over 8 years ago

As already filed in bug #5238 (for which this is confirmation of the bug) asteroids heat up far too quickly.
A 2200t class E asteroid was vaporised way too high up and way too easily... Class E's are planet killers, they are supposed to come in at interplanetary velocities and make it down to the ground.

This was discovered live on my stream and highlighted for this bug report. http://www.twitch.tv/comwarrior69/v/10702451

A temporary work around is to add the following lines to the potatoroid config,

thermalMassModifier = 500.0
emissiveConstant = 1
heatConductivity = 1

However, a more nifty fix is to use the ablator code to ablate the mass of the asteroid... Which is what would happen in real life.

#4 Updated by Squelch over 8 years ago

  • Has duplicate Bug #5322: asteroid atmospheric heating bug added

#5 Updated by Squelch over 8 years ago

  • Related to Feedback #5939: Asteroid surface temp during atmospheric re-entry too low added

#6 Updated by TriggerAu almost 8 years ago

  • Status changed from New to Needs Clarification

#7 Updated by TriggerAu over 7 years ago

  • Status changed from Needs Clarification to Closed
  • % Done changed from 0 to 100

Closing this report out for now. If you find it is still occuring in the latest version of KSP please open a new report (and this one can be linked to it.) For best results, the wiki contains really useful info for when creating a report http://bugs.kerbalspaceprogram.com/projects/ksp/wiki.

You can also ask questions about the bug cleanup in the forum here: http://forum.kerbalspaceprogram.com/index.php?/topic/143980-time-to-clean-up-the-bug-tracker/ and tag @TriggerAu to get my attention

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