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| | | |-+  NASSP6.x LM Ascent Autopilot Archive
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Author Topic: NASSP6.x LM Ascent Autopilot Archive  (Read 10027 times)
movieman
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« Reply #15 on: February 01, 2005, 08:06:47 AM »

We already have the realistic descent autopilot, LazyD just needs to hook it into the AGC code Happy.
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Tschachim
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« Reply #16 on: February 01, 2005, 09:42:45 AM »

Hi RMaia,

by the way: Do you want to use SourceForge, too?

See here: http://www.ibiblio.org/mscorbit/phpBB2/viewtopic.php?t=32

Greetings

Tschachim
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Cale
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« Reply #17 on: February 01, 2005, 11:20:57 AM »

My vote's definitely for a historically-accurate version of the A/P.  Previous tutorials for LM-CSM rendezvous are based on historical parameters for lunar ascent orbit insertion.

Will download and test 6.2 tonight when I get home tonight.  Great job Mark and Rodrigo!

Cheers,

Cale

P.S.  Mark, dunno if you're doing this also, but I'm beta-testing LazyD's LANDMFD.  With 6.1 installed plus Rodrigo's quick-fix installed, I experienced major problems with PDI and landing.  Have you experienced any problems with this (if you're testing it), and do you know if there's been any conflict reported so far with 6.2?
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"Quarter-million miles from home, diarhhea's nothing to sneeze at". - Chuck Berry

"I know...man, it's gotta smell bad up there" - Chris Kraft
movieman
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« Reply #18 on: February 01, 2005, 11:34:40 AM »

Haven't tried it with 6.2, but it worked fine for me with 6.1.
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FordPrefect
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« Reply #19 on: February 01, 2005, 05:04:31 PM »

Rodrigo, I think it would be awesome if you would go for the historically most accurate version! I would vote for it.

cheers
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My Project Apollo work in progress:
* New detailed Lunar Module Ascent stage with virtual cockpit (VC currently planned as eye candy only) 18 % done

My Project Apollo work to be continued:
* new Service Module SPS engine bell
* various Saturn V textures, exhaust textures
* SIM Bay for the SM


My long-term plans are to create a:
* New detailed Lunar Module descent stage (eventually models of all flown LM's)
* New F-1 engines for the S-1C stage showing the foil (batting) insulation
* New LUT and launch pad (if nobody else does it)
Anonymous
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« Reply #20 on: February 01, 2005, 07:59:33 PM »

OK guys, the most historically accurate guidance will be the one then.

Actually what will change is that the guidance equations will take into account insertion speed (both horizontal as well as vertical) instead of altitude (as currently is) and aim the LM attitude to achieve that speed within a fixed burtime, which allows some fuel left for other orbital maneuvers (aligning the LM orbit plane with the CSM's and raising the orbit to the CSM's). I will be implementing the programs for these other orbital maneuvers too (like the real ones), so it's going to be as close to real thing as is practical to do. And I will try to provide a instruction that will be easy to follow...Wink
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RMaia
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« Reply #21 on: February 01, 2005, 08:13:15 PM »

Sorry guys, I forgot to login. It was me on the post above. Sorry again.
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Rodrigo Merce Maia

- Sometimes, simplicity is the best answer to complexity.

Physics is FUN!
dcsmokey
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« Reply #22 on: March 01, 2005, 09:51:09 AM »

Hereís how Iím setting up the computer for the burn Ė I definitely need help as Iím screwing up.

VERB 37 NOUN 10 ENTER to run program 10.  Then pressing PROG

Gives a flashing VERB 06 NOUN 33.

(This is what Iím not sure of, how do I enter the numbers here for the countdown?  Everything Iíve tried gives me an operator error.)
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gimp1992
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« Reply #23 on: March 01, 2005, 10:09:53 AM »

verb 31 enter for first row of numbers, bverb 22 erner for second verb 23 enter for third.
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Joe Brown
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« Reply #24 on: March 01, 2005, 02:09:11 PM »

Quote from: movieman
Ok, I have the first phase of this (program 10 and 11) basically plugged in and working, and closer to the real Apollo interface. The only real issue I have with it is that it's very frame-rate dependant... at 100fps it works fine, at 10fps it pitches up and down in ever-increasing oscillations until it flips right over and goes out of control: I also had to change the sign of the yaw code to make it turn to the right heading... originally it was starting at 280 degrees and did a 350 degree turn to get to 270 degrees Happy.

I'm not sure what to do about the oscillation problem: I'm guessing that the autopilot needs to hold the pitch rate as well as the pitch.
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