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I have two small suggestions for the Orbitersim organization on GitHub, that I think will make workflow a bit easier/safer. Add regular contributors as "members" (not Owners), to the Orbitersim organization. There is no limit to the number of members that can be in a GitHub organization, so no...

Based on the questions in this thread, and some discussions we have had in the NASSP team on implementing complex aerodynamic force and moment models I have put up a pull request that should address the challenges we've all faced at one time or another Text from my PR: This pull request is add...

The major roadblock to OpenOrbiter 64bit stability is a lack of source code for some of the celestial bodies (mostly moons of Uranus and Mars). In past Orbiter releases, these were always packaged as just a DLL and I'm not sure Dr. Martin S. ever had the source, at least it was never added to...

I have seen a few users complain about the dollar sign character '$' causing post formatting issues. The issues seems to be related to typing more than one on a single line, e.g. : $20 is fine But : 2030 is not. Is there a way we can escape these in posts, or? Inline \LaTeX is really useful...

Forum users currently need to edit their filenames, appending .txt in order for the forum to allow upload. If the goal is to prevent uploading unauthorized file, I don't see how this accomplishes that goal. Someone could upload mailware.exe.txt. is there a better way to check if files are safe...

Can we make the default link text color here something that actually shows that it's a link. I occasionally post text with links in it and I'm convinced that people miss them because they don't stand out. Thank you.

I've been playing around with the idea of implementing an improved gravity model for orbiter. Currently Orbiter calculates non-spherical gravity perturbations using only the J2-J4 terms. This results in a non-spherical gravitational potential field that varies only with latitude, and not with...

This sub-forum doesn't get enough posts, so I thought I'd share a matlab script and a graph or two. I became interested in van der Waals equation recently after looking for ways to improve upon the ideal-gas based approach used in NASSP. This was much more of a tangent, than something I'd ever...

The subject of video tutorials for NASSP has come up a number of times on the forums, and on other places around the internet (Reddit, Facebook, YouTube comments). I have no doubt that these will add a valuable resource for new and experienced users alike, and will probably help drive new and...

Well I suppose it's not technically "space" flight in the strictest sense, but it is related to it and aparently greatly impacted by it. https://www.google.com/amp/s/www.nytimes.com/2021/01/21/technology/loon-google-balloons.amp.html It's a project in which I was involved as an engineer for a...

So I enabled a few compiler and linker flags while trying to improve the performance of NASSP. Namely these were: /Ot favor fast code /GL whole program optimization /LTGC link time code generation (I think this is turned on implicitly with /GL) Obviously there isnt a drastic improvement...

So it may or may not be on the OF end of things, but I just noticed that the NASSP build results thread isn't getting updated. I'm not sure how that was set up here, but could someone take a look at it. @dseagrav probably knows more.

Just looking through a few old threads and noticed these dont work anymore. Any option to add math type setting back. We could always do it with images, but this was so much easier.

I got the bright idea to render the development history of NASSP in Gource, so here's a video of that: It took all day to make on my slow, old, circa 2006 computer, and it heated the heck out of my already 88°F apartment, but it was well worth it. It's pretty incredible to watch almost 16...

If I wanted to check whether or not each vessel in a simulation was a Deltaglider (or any other type), what's the proper way to do it? for (int i = 0; i < oapiGetVesselCount(); i++) { OBJHANDLE hVessel = oapiGetVesselByIndex(i); //if(????) { } }

So I could use a little help from someone with a copy of Matlab. The image below is a gain map of the normalized gain of the Apollo CSM Rendezvous Radar Transponder as seen from the LM; it is plotted with respect to the spherical coordinates of the LM's position as seen by the CSM with \theta...

I'm having a bit of trouble setting up Codeblocks to compile AGC assembly files. Am I wasting my time trying to do this in windows, and should I just download the VM and do it that way?

Hi all, While we're all social distancing, I thought I'd come back and be part of the forum for a while. Things seem to have changed here. There isn't much addon development and Orbit Hangar seems kind of broken at the moment. It's good to see NASSP is still in active development. Is SSU...

I've been kicking around the idea of creating a space station addon, both as a way to demo some modular code I'd like to make available, and as kind of of spiritual successor to Kulch's Mir-2 station. The idea is to make each of the half-dozen some-odd modules have some unique functionality qua...

I've been bitten by the addon dev bug again recently and I'm getting back into the Orbiter API and C++. I'm having trouble with the very simple bit of code below. #define STRICT #define ORBITER_MODULE #include <OrbiterSDK.h> DLLCLBK void opcPreStep(double simt, double simdt, double mjd) {...