• Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.

    Post 16 Update

    Post 17 Warning old domain name stealing credentials

  • IMPORTANT INFORMATION - ALL MEMBERS PLEASE READ

    Due to an increase in the number of new members who are trying to systematically download our entire Resource Library (one new member yesterday tried to download 3,000+ files AT ONCE!) we are being forced to implement some changes regarding who can download what, how many files at a time and at what speed. As the forums and Resource Library share the same bandwidth when the Library gets overloaded with demand like that the forums fall over, as we have all seen recently. It's sad that greed has forced our hand in this way but we must do something for the benefit of all our legitimate members (many of whom paid money for the upkeep of the site) and to prevent the files stored here being used for nefarious purposes. Many of our uploads have specific conditions tied to them that forbid uploading to any other site or deny uploading to any site that has a 'paywall' (i.e. a pay to download policy). Due to the number of mass download attempts recently we can only assume that somebody, somewhere, is attempting to stock up a new file library with our files and we owe it to our up-loaders to protect their files and intellectual property especially as many (like my own LDR Development projects) are made available at SOH only and are specified as such in the 'read me' files.

    The forums and Resource Library will be taken offline as of 13:00 EDT with the forums coming back online shortly after without the resources library while we work on setting up permissions on the new Library module.

    We hope our members understand why we need to do this and will bear with us while we implement the changes.

    Thanks in anticipation, SOH ADMINISTRATION

    Downloads are now active. You may proceed with downloading as desired

    The download limits are a work in progress. Some settings are likely to need tweaking in the coming days.

New Contrail Effects for CFS3

New Contrail Effects for CFS3 2026-05-30

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Overview History Discussion
That is the name of my old contrail effect. If you install the effect lines at the top of your effects.xml, the old effect will automatically be replaced with the new one.
 
I did a Left Wing - Right Wing comparison of these new contrails (fx_contrail_1, 2, 3, 4) with fx_high_contrail that was included in the Combined Effects Package Combined Effects Mod

Very similar after they fully develop, but these new ones get big and fluffy more quickly (closer to real life experience). The new ones also activate at a slightly lower altitude, than what we previously suggested to be used (20k versus 25k which is actually variable with the time of year anyway)

cfs3 2026-05-31 08-48-04 Before.jpg
 
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Yeah, you're right about the altitude Andy, should be around 7500 m.

I noticed an interesting thing today looking through flak photos. There are photos of B-17s flying in flak. There are photos of B-17s with contrails. I have not yet seen a photo of B-17s with contrails flying through flak.
 
That's is indeed very interesting. I'll have to do some research to see if there is a physical reason for that, or just a coincidence.

Found just one shot with both.
1780432726743.png

88mm Flak was tactically ineffective above 26,000 ft, so the bombers that were producing the highly visible contrail tracks generally tried to stay above that. Contrails could be produced as low as 16,000 ft in the most adverse conditions (coldest part of winter).
 
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Something looks really odd about that flak for some reason.

Yeah, 88mm wasn't as effective at those heights, but they also had a fair amount of 105mm and even 128mm, which could reach up there better.
 
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