Advanced Question Technically correct APAS models

[Grover]

i was docking with the ISS not too long ago, and i noticed (again) the annoying APAS rings on the default ISS that have 4 "spades" instead of the real-life APAS, which uses only 3, which has raised some issues and questions for me:

so, now i have quite a composite thread:

on one hand, is there a replacement mesh out there that can fix the APAS rings to have the correct number of spades?

also, i was wondering about the construction of them, as far as modelling an APAS ring is concerned:
i was under the impression that an APAS ring had a diameter of 1.82m (around the outer perimeter, then 3 spades, with the 12, 4 and 7 o-clock spades on the station side (i know thats not a perfect assumption, but it works as far as we concern a spacecraft docking to the ISS) and the spacecraft using spades oriented at 2, 6 and 10 o'clock (check how ive modeled the APAS on my Haworth if the words dont make sense to you.

has anyone every actually modelled an APAS based on their actual size and shape? or do we all just guess it like me

thanks guys

 

[MaverickSawyer]

I think it's the 12, 4, and 8 o'clock positions, not 12, 4, and 7.

 

[Grover]

ita actually partway between them, at 0* 120* and 240*

i just had difficulty putting it into words

 

[T.Neo]

For my DG-APAS docking adaptor, I copied the APAS spades off of the Shuttle... not sure if this would correlate to the passive APAS on the station's PMAs.

 

[MaverickSawyer]

ita actually partway between them, at 0* 120* and 240*

i just had difficulty putting it into words

12, 4, and 8.

 

[Capt_hensley]

I modeled based on the NASA specs for the IDS which can be found by searching for the LIDS IDSS PDFs.
http://dockingstandard.nasa.gov/Meetings/TIM_(Nov-17-2010)/NDS_TIM_presentation.pdf
http://www.internationaldockingstandard.com/

I made the mesh by tracing the PNG, and scaling it to size for the numerous items it was made to be used by, Shuttle, CST-100, MPCV, Orion, and Dragon.

It doesn't matter where you put the petals, as long as you dock correctly. Two alignment pins, that align with pin sockets on the opposing ring, see my PMA, LIDS-CBM adapter.
[ame="http://www.orbithangar.com/searchid.php?ID=5384"]H-10-K Enterprises Gateway Station .dds Textures v1[/ame]
The pins will always make sure you are mated and that the "Elec" plugs match, and fluid connectors are matched.

I hope you find the links helpful.