Additional Train Forces
#1
Posted 30 July 2018 - 12:00 AM
i) Wind Resistance - the current method of adding car resistance typically is for "Still Air" conditions. However in real life it is rare that there is no wind/breeze blowing. Typcally a cross wind will push the train against the far rail, and thus increases the amount of resistance that it experiences. Naturally the harder the wind is blowing, and the faster the train is traveling, the higher the resistance that will be generated.
ii) Wagon Derailment/Overturning - under certain circumstances if the wind is strong enough, then the train can be derailed or overturned. There are various accident reports, and other information describing the impact of wind on railway operation.
iii) Buff/Drafting Forces - poor operation of the train by a driver can cause excessive buffing or drafting forces, which in some instances can cause train derailment, especially when traveling around curves, in particular in yards.
The calculation of these forces is quite complex, and often they are impacted by various dynamic variables, such as track condition (track twist, imperfections, etc), hunting of the train bogies, movement of the bogie suspension, movement through cuttings or across embankments, etc.
The models implemented will attempt to model some dynamic variables, such as wind gusts, etc, but it is not intended to attempt to represent all dynamic variables in the implementation.
These changes however may require drivers to pay closer attention to their driving skills.
Thanks
#2
Posted 30 July 2018 - 08:05 AM
I look forward to what you can come up with for buff and draft forces; managing the node properly will add a huge challenge. Do you think this effort will be creating new parameters specific to the draft gear or just trying to make KUJU's parameters work as expected?
It's too bad KUJU didn't require the modeler to name coupler1 and coupler2 in his mesh... we could have had visual movement of the slack running in and out. Oh! You could add that! There are still a few people making new rolling stock models.
#3
Posted 30 July 2018 - 04:45 PM
Quote
iirc in Open Rails before 1.0 it was possible to see (in one of the debugging F5 displays) whether or not the train was bunched or stretched, and how many cars of each. At some point, that disappeared. Is the code still there just not being used or did it go away in a later refactoring?
#4
Posted 30 July 2018 - 08:54 PM
Genma Saotome, on 30 July 2018 - 08:05 AM, said:
Mike B, on 30 July 2018 - 04:45 PM, said:
Are you able to find an old version that had the feature?
Thanks
#5
Posted 31 July 2018 - 02:49 AM
#7
Posted 31 July 2018 - 12:04 PM
#8
Posted 31 July 2018 - 07:48 PM
Quote
Is that it?
Yes... That is what I am talking about... :thumbup3:
#9
Posted 02 August 2018 - 01:09 AM
Hamza97, on 31 July 2018 - 02:49 AM, said:
I have had a quick look at this, and it was removed as part of this blueprint.
Given that there was extensive discussion (see accompanying thread) I don't believe that it is appropriate to reinstall it into the main HUD.
However if there is sufficient support it could possibly be added back into the Advanced FORCES INFORMATION HUD?
I personally think that it would be preferable to include a symbol beside the coupler forces column to show whether the car is pushing or pulling.
Now comes the time for support for this proposal to be offered.
Thanks
#10
Posted 02 August 2018 - 10:48 AM
Is that effort to pump data into an html broadcast stalled or did I miss the rollout? It could be configured for that too.