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Original Digital DATCOM Source Code
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TOPIC: Original Digital DATCOM Source Code
#38
aleksey
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Original Digital DATCOM Source Code 2 Years, 6 Months ago Karma: 3
Hello everyone,

I just wanted to let everyone know that we have gotten our hand on the original Digital DATCOM source code from USAF.

Before we post it, we want to think a couple of internal things through.

It WILL be posted though within the next 7 days, thats an openAE promise ...FREE and open to distribution, as always.
 
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Aleksey
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#40
aleksey
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Re:Original Digital DATCOM Source Code 2 Years, 5 Months ago Karma: 3
The ORIGINAL United States Air Force Digital DATCOM program source code is posted for your enjoyment and distribution pleasure. DOWNLOAD HERE

This is the original source which we have received in entirety from the USAF Controls branch WITHOUT any modification or tampering.

We were so careful in distribution and packaging of this source code that we even digitally signed each and every source file with an openAE.org key. What this means is that if anyone modified or tampered with the code released on this website, the openAE administration team will be able to tell the difference.

This signature was done to keep some kind of digital control on the source of the program distributed. We do not seek to be the best at anything, but we would like to keep track of the source code we distribute and modifications done to it.

We sorely admit that Digital DATCOM is not perfect, and modification to the original source code is an inevitable possibility, however, the modified code of the Digital DATCOM should be knowingly kept separate from the source code. This is why we signed all the source files and can double check them in a matter of minutes.

If you would like the openAE team to check a source code package of the Digital DATCOM package, please submit a request attached with the source code package to This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Otherwise, enjoy and distribute! (as always for FREE)

Happy Turkey Days,
 
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Last Edit: 2009/11/25 15:36 By aleksey.
 
Aleksey
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#396
BillGalbraith
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Re:Original Digital DATCOM Source Code 9 Months, 1 Week ago Karma: 0
Alan Teeder and I have identified some errors in the original code, and a couple things compiler-dependent issues. The biggest problem was in propeller-driven models, as the code had a square-root of a negative number. Another big problem was with model with 20 AOA values.

The attached package has the changed code, as well as a test case with shows the right answer. Some versions of the executable have NaN for some of the coefficients, especially above about 14 degs.
File Attachment:
File Name: Datcom_change_package_11_8_19.zip
File Size: 29137
 
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Last Edit: 2011/08/19 14:11 By BillGalbraith.
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