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25068 Posts in 2094 Topics by 2267 Members
Latest Member: Apollo Next
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91  Project Apollo - NASSP / Project Apollo - NASSP Development / Re: Documentation & Questions on: March 17, 2011, 02:02:11 PM
The Service Module RCS documentation is up on the Project Apollo wiki. Diagrams and CM-RCS stuff will follow shortly. If anyone notices any errors/omissions please feel free to point them out so I can make changes. Just two questions for anyone who can answer:
A) Are start and shut-off transients implemented in the current NASSP?
B) I made the assumption that they are a result of the fuel and oxidizers mixing and depleting. Is that correct?
92  Project Apollo - NASSP / Project Apollo - NASSP Development / Re: Documentation & Questions on: January 29, 2011, 11:37:36 AM
I just skimmed through the articles, looks great!  Thumbs Up Happy

Thanks! Glad to help. You guys got a virtual-North American going on here   Thumbs Up
Things have been busy lately. I'll start on the RCS when I get the time.
93  Project Apollo - NASSP / Project Apollo - NASSP Development / Re: Documentation & Questions on: January 21, 2011, 04:54:28 PM
Thank you very much. Happy The SCS stuff I wrote up should be on the wiki. The BMAG article could stand to be fleshed out a bit, and I need to upload some images (attitude control chart and deadband charts from AOH, panel diagrams, etc) I'll take care of all that when I have the time. Other than that, if anyone sees any errors feel free to point them out. The AOH can make my head spin  ROTFL

I'll take care of any revisions as they crop up. Meanwhile, I'll try to tackle another system. Which ones are highest on the list of priorities?
94  Project Apollo - NASSP / Project Apollo - NASSP Development / Documentation & Questions on: January 16, 2011, 12:05:24 PM
I started drafting up articles on the SCS for the Project Apollo wiki, using the Apollo Operations Handbook as reference. I've run into two roadblocks though:

1) The AOH says that the EMS .05g switch puts the GDC into Entry mode. How does entry mode differ from euler mode?

2) I can't post anything on the wiki! It's not sending me any conformation e-mail. Is there someone I should send the documentation to?
95  Project Apollo - NASSP / Project Apollo - NASSP Development / Re: What needs to be done? on: January 12, 2011, 11:03:44 AM
I'd definately be willing to take a crack at documentation. I've noticed a lot of important systems (mainly the SCS and ECS) have little to no documentation on the wiki. I could work on completing those articles and then compile all of them into a NASSP Operations Handbook PDF or doc. I was also thinking of doing a control and display chapter (like what is found in the real AOH) as it applies to orbiter. Natrually this will just cover the CSM.
96  Project Apollo - NASSP / Project Apollo - NASSP Development / Re: What needs to be done? on: January 07, 2011, 08:00:23 PM
Nevermind, I found this information elsewhere on the forum.
97  Project Apollo - NASSP / Project Apollo - NASSP Development / What needs to be done? on: January 07, 2011, 02:48:03 PM
This project looks really exciting! Browsing through the forums it looks like the CSM is mostly done and the LM has a long way to go for now.

So I'd like to get an idea of the current to-do list:
What's preventing the missions only involving the CSM (Apollo 7&8 ) from being released? (I'm guessing mostly documentation?)
What's the biggest hurtle involving the LM development so far?

I don't know much about programming, but I'd like to help any way I can!
98  Project Apollo - NASSP / Planning / FIDO MFD? on: July 04, 2010, 12:01:56 PM
First off, I'd like to say that this is a very impressive project! You guys have pretty much built an Apollo CSM in only 4/5 years!

While orbiter does A LOT of things very well, one thing that I've always felt it lacks is an "out-in-space" feeling that other space sims (A-OK!, SSM) have. You are simply given way too much information on your spacecraft's trajectory, and all in real time.  In A-OK, for example, you have to radio a ground station, if you are even in range, and request estimates. This certainly adds a bit of realistic apprehension as to whether or not things are working properly on board your ship. In orbiter, if you aren't sure if you de-orbited properly, all you really have to do is pull up your orbit mfd, and you get a realtime diagram of your orbit. You can even perform the burn with the MFD up to make sure you get it right. Now this is necessary in orbiter, because you calculate your own maneuvers, but the real astronauts had someone do this for them, and had to rely on their work.

I know an MCC project is in the works, but by reading the message post it is a long way from done, and not all of it would be required for an Apollo 7/8 release where, if I understand correctly, there will be no equipment failures modelled. What I propose is a FIDO MFD. It would be similar to the Lunar Transfer MFD, but instead would have a series of button for different maneuvers and aborts (TLI, LOI, MCC1, TLI-90, etc). Clicking on any of the buttons would cause it to calculate the PAD data for that burn, using values from lines in the .scn file. These values would essentially be things that you would manually load into IMFD, or LTMFD, like TiG, PeA, ApA, ReT, etc. The MFD would either display all the PAD information, or maybe even read it to you in TTS. After the burn it could read you up trajectory estimates. It would fulfill the role of MCC as far as is required for the next release. This way, by the time the MCC project is in full-swing a major hurtle would have been taken care of!

Just an idea... I know very little about programming. How feasible do you guys think this is?
99  Project Apollo - NASSP / Support & Bugs / DSKY issue on: July 02, 2010, 08:44:18 PM
I was flying the Apollo 8 vAGC mission when at about 26 hrs into the mission (can't recall off the top of my head) the DSKY ceased to take commands. No numbers would even appear in the verb/noun fields. I quickly went into test pilot-mode trying to isolate the problem but I couldn't find a simple solution. State vector and P30 updates caused the uplink light to glow but nothing happened in any of the registers. I finally tried pulling the compute cbs and resetting them, which caused the DSKY to operate again, but I'm sure there has to be a simpler solution. Any ideas?
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