Skylab 1973 rebuild

[moonheart]

The antenna is a know thing - can't be closed.

 

[MarkWatney2015]

AMSO's CSM antenna wasn't designed to be stowable/deployable unless it is mounted on its own Saturn V rocket, so it is impossible to close it in any way

 

[gattispilot]

OK. Then I guess the antenna sticks out on launch. one thing on Skylab I haven't got to work is to show/no show the floating crew. Since AAPO used UMMU which doesn't really work in 2016 and AMSO doesn't support crew transfer. It may be a mute point. The same with the dock hatches. They don't open. But it sounds like they don't open on the 2 Apollo vessels.

Orientation: I suppose the ATM end should be facing the sun? Skylab has CMG movement. But how to get it aimed at the sun. I know we have solar panel orientation code. Not sure if that could be adjusted to move Skylab?

lOOKING TO SEE IF MORE DETAILS ARE NEEDED IN THE MDA?
Left is from Orbiter. I think I should flag the textures so no effect by the sun?

 

[moonheart]

I seem to get an error when I try the EVA scen:

000000.000: >>> ERROR: No vessel class configuration file found for:
============================ ERROR: ===========================
SKYLABEFB
[Vessel::OpenConfigFile | .\Vessel.cpp | 243]
===============================================================

 

[gattispilot]

Oh. Try this it has the dll and cfg

Comparing my interior to images. The structure in the STL/airlock are wrong. They are mirror images.
The MDA is tougher as things change.

 

[gattispilot]

We working the MDA area. But I wonder how to get the Telescope end to aim at the Sun?

What orbit should it be at. I have seen 50 degrees incline. Also making the MMU usable to Skylab guy

 

[MarkWatney2015]

But I wonder how to get the Telescope end to aim at the Sun?

The entire space station rotates to point toward the Sun whenever the ATM is in use, though I think this also became the permanent orientation of Skylab to prevent its interiors from heating up after it got damaged

 

[gattispilot]

Thanks. How to move it aim at the sun though. It has cmg to move. Trying find orbit info.

 

[MarkWatney2015]

The movements were mostly gyroscopic, similar to how the Hubble maintains its lock with a specific target

 

[MarkWatney2015]

Trying find orbit info.

Here's some of Skylab's TLE data retrieved from CelesTrak:

 

[gattispilot]

I struggled with the whole TLE thing on the shuttle. Might need help on that

We have code to rotate the solar panels on some craft to rotate to the sun. But is there a way to automatically turn to the sun?

 

[gattispilot]

More images.

I will attach the MMU to the eva bay. Then you exit grap the mmu and fly around and return the mmu and re-enter. I know this never happened.

 

[TheShuttleExperience]

The entire space station rotates to point toward the Sun whenever the ATM is in use, though I think this also became the permanent orientation of Skylab to prevent its interiors from heating up after it got damaged

Yeah. I read it in the Skylab operations manual two weeks ago. There were basically three "modes":

 

[gattispilot]

Thanks. I mainly wanted to get the mesh correct. Not sure if there is a way to program that feature.

Relooking at the OWS. I think I have it wrong

 

[MarkWatney2015]

Not sure if there is a way to program that feature.

BrianJ made the tracking feature code for the HST_EX addon, which Max-Q adopted for his Better ISS addon. Alternatively, we could install/dock a CMG for the suntracking

 

[gattispilot]

Thanks. So I am using the CMG from the better ISS. But as I understand it that is for the animation of the solar arrays. For skylab it would need to move the cmgs, right?

My brain is hurting form the mesh of Skylab.

Following the layouts from here:

https://ntrs.nasa.gov/api/citations/19790011999/downloads/19790011999.pdf

BUT. For some reason the skylab design is offset by 20 or so degrees. We know the Science airlocks are at y+ and Y- x 0 in orbiter terms. In nasa it is Z=/- and y -0.
And you have to see which direction the view is looking forward or back.
In dome1 looking aft. in the program it is looking forward but floor1 is looking forward or looking back.
So if you align things with the drawings. you need to rotate everything so it aligns with the x/y axis

 

[MarkWatney2015]

But as I understand it that is for the animation of the solar arrays. For skylab it would need to move the cmgs, right?

The CMGs weren't coded specifically for the solar arrays.... it's for the movement/orientation of the entire space station itself

 

[gattispilot]

std:string GetAstrMesh(const UACS::AstrInfo& astrInfo) { std::string configFile = std::format("Vessels/{}.cfg", astrInfo.className); FILEHANDLE hConfig = oapiOpenFile(configFile.c_str(), FILE_IN_ZEROONFAIL, CONFIG); if (!hConfig) return {}; char buffer[256]; bool read = oapiReadItem_string(hConfig, "SuitMesh", buffer); oapiCloseFile(hConfig, FILE_IN_ZEROONFAIL); return read ? buffer : {}; }

The CMGs weren't coded specifically for the solar arrays.... it's for the movement/orientation of the entire space station itself

Yes, So the CMg move skylab around. But can it move and track the sun?

 

[MarkWatney2015]

Yep, in theory, the CMGs have the ability to track the Sun

 

[TheShuttleExperience]

My brain is hurting form the mesh of Skylab.

Not a miracle Although the OWS provided a lot of space, there was also a lot of different equipment/stuff installed. And the arrangement was strange here and there I think. But they did the best to utilize the leftovers of Apollo. I like that grid-design of the floor and ceiling of the crew compartment by the way. That "bike shoe" locking mechanism certainly was nice. Also the dining table was actually more advanced than that messy "picnic table" onboard ISS imho. Although today the space food system is way better.

I'm glad you do the Skylab for Orbiter I fear we'll never get such an accurate simulation of it again. And it's actually sad the program didn't get that much attention in the 1970s, except its orbital demise in 1979. Without the internet, there wouldn't even be a lot of detailed information.