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Gemini 060615 released!
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ajm99987
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« on: December 08, 2010, 02:34:52 AM »

I was wondering how to get more involved in this project.  I have limited programming experience, but I was wondering what else I could do.  If anyone has any suggestions they would be most appreciated.
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Tschachim
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« Reply #1 on: December 08, 2010, 06:54:49 AM »

Well, we're trying to release an "Apollo 7 only" version and - besides the fact that I almost have no time for Project Apollo currently (we've bought a house this year and that'll keep me busy the next months) - the major showstopper is how to calculate the Apollo 7 burns and to write documentation / tutorials in the wiki, the CSM should be fine thus far.

So if you manage to fly the Apollo 7 mission by the numbers and to document how you did it, it would be a great help, this is what I'm trying to accomplish since months...  Happy

Of course, you can help with the LM, too, dseagrav is coordinating the work in this area.

Cheers
Tschachim
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dseagrav
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« Reply #2 on: December 08, 2010, 08:53:39 AM »

If you want to work on the LM instead, it's mostly document archaeology at this point. The main item of interest right now is the ECS and finding electrical consumption information.
We're also missing telemetry data scaling information.

I am also still in the market for any leads on the Saturn LVDC software.
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ajm99987
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« Reply #3 on: December 08, 2010, 04:15:11 PM »

dseagrav, are you interested in information from anywhere?  If you could let me know what information you have so far that would be helpful.  I am studying aerospace engineering currently and have done several school related projects on the Apollo and Gemini programs in the past year.  I'm not sure how much I did on the ECS, but I can dig that stuff up for you.  Where would you wnat me to submit this information? 


Tschachim, I have flown the entire Apollo 7 vAGC mission but didnt document anything.  I remember having a few problems with it but that was before the most recent update.  If I documented the flight how would you want that done?
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dseagrav
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« Reply #4 on: December 08, 2010, 04:30:05 PM »

dseagrav, are you interested in information from anywhere?  If you could let me know what information you have so far that would be helpful.
Well, I've been through just about everything on NTRS, I'd be interested in anything not obtainable there. We have a documentation archive set up, I need to re-sync it with my local document tree though.
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I am studying aerospace engineering currently and have done several school related projects on the Apollo and Gemini programs in the past year.  I'm not sure how much I did on the ECS, but I can dig that stuff up for you.  Where would you wnat me to submit this information? 
At this point, just putting things the wiki is probably fine. If you are running across whole documents, let me clean up the archive and then I'll PM you details for it.
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Tschachim
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« Reply #5 on: December 09, 2010, 10:13:00 AM »

Tschachim, I have flown the entire Apollo 7 vAGC mission but didnt document anything.  I remember having a few problems with it but that was before the most recent update.  If I documented the flight how would you want that done?

Thanks a lot! As a first step, some step-by-step instructions about how to calculate (especially with which "tools", i.e. IMFD, EOCA etc.) and execute the burns here in the forum would be great already. After that we should do Checklist MFD checklists for that (currently I'm writing on the Checklist MFD checklists up to CSM/LV separation when I have some time left) and do a kind of tutorial in the wiki (I didn't think about how to do / organize that exactly yet, I'd be happy to be able to fly the mission up to rendezvous for now). Also, there's much work to do in the wiki regarding reference articles. The SPS article (http://nassp.sf.net/wiki/SPS) is a quite good example on how an article should be, the RCS (and SCS, EPS...) articles still need a lot of work (http://nassp.sf.net/wiki/CSM_RCS).

These are the burns I'm talking about, from here http://www.ibiblio.org/mscorbit/mscforum/index.php?topic=1456.msg18941#msg18941:

#1 003:20:09  Phasing Maneuver (16.3 sec RCS ??)
#2 015:52:00  Phasing Maneuver #2 (17.6 sec RCS ??)  Apparently the S-IVB's orbit didn't match predicted so a second phasing maneuver was needed.)
#3 026:24:55  Corrective Combination (9.26 sec SPS ??)  Used to set up the subsequent Burn (CSI).  We have this in the flightplan as the 1st SPS Burn.
#4 028:00:56  CSI  (7.76 sec ??) SPS Put the CSM into a coelliptic orbit with the S-IVB.  We have this in the flightplan as the 2nd SPS Burn.
#5 029:16:13  TPI (46 sec RCS ??) Transfer Phase Initiation.
#6 029:37:48  Midcourse Correction (TPM)
#7 029:43:55  Braking maneuver

Just to be sure: The goal is not to do exactly the same burns in the sense of direction / burn time, but to replicate the original trajectories / orbital parameters as good as possible, for example to do a first phasing burn and to have the CSM and S-IVB in the same orbits / positions relative to each other as in reality (I'm no native speaker, so I hope my explanations aren't too confusing...  Happy ).

There are already some threads about these burns:

Discussion about the Corrective Combination Burn: http://www.ibiblio.org/mscorbit/mscforum/index.php?topic=2276.0
Discussion about the CSI Burn: http://www.ibiblio.org/mscorbit/mscforum/index.php?topic=2279.0

Cheers
Tschachim
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ADT
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« Reply #6 on: December 15, 2010, 10:42:24 AM »

I have been trying to do exactly that for a while now, and now am on a month off from work so finally giving it a proper go!

There are a few NASA technical notes that have been very useful in figuring out numbers for the coelliptic sequence (had them so long now, am not sure where they came from! Can email across if you like).

My knowledge is limited so I have just been using the historic times and altitudes, figuring out a solution in IMFD and transposing the data across to use in the AGC. What I am trying to figure out now, is how to use the AGC programs 31-35, and how it all fits together.

Well anyway, feel free to PM me if you are interested in collaborating, or want any of the docs.

Regards,

Alex
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grummanae
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« Reply #7 on: February 11, 2011, 10:23:30 AM »

I have no knowledge of C++ but i am willing to learn as i go and contribute where i can being a former Aviation Electricians Mate in the navy  also being trained in Inertial Measuring units  maybe i can provide some insight  technically ?  ... let me know
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