[Sea-sa] Meeting reminder - SEA-SA RASDS meeting, Monday, 14 Aug 23 @ 0700 AM PDT

Shames, Peter M (US 312B) peter.m.shames at jpl.nasa.gov
Thu Aug 10 23:48:06 UTC 2023

Hi SEA-SA team, RASDS subset,

We have a working meeting scheduled for Monday, 14 Aug 23, @ 0700 AM PDT.

Yes, I know that I managed to blow off the 17 July meeting.  Clearly still had my clock out of whack from the lengthy, 10 time zones away, vacation.  Took me a week to fully recover.  My apologies.

Let’s try this again on Monday.  Please come prepared to discuss the status of your document sections.

Thanks, Peter

From: Peter Shames <peter.m.shames at jpl.nasa.gov>
Date: Thursday, June 22, 2023 at 5:06 PM
To: "freds at spacestandards.org" <freds at spacestandards.org>
Cc: Shelbun Cheng <shelbun.k.cheng at jpl.nasa.gov>, "Radulescu, Costin (US 9300)" <cradule at jpl.nasa.gov>, Ramon Krosley <r.krosley at andropogon.org>, Robert Rovetto <ontologos at yahoo.com>
Subject: Re: [EXTERNAL] Re: SEA-SA RASDS meeting, 10 July ???

Hi Fred,

Ok.  I’ll reschedule the next meeting for the 17’th.  I assume that will work ok for the rest of the crew … right?

I’m really glad you talked to Kei and got things sorted out.  I think that’s an important step.

I’m not just OK with you taking the approach of using the Ref Arch, I think that’s just what is needed.  I’m also ok with the “loose on discipline” part, if what you create using this framework works for your community then we have a winner.

I do, of course, have one bit of feedback about how you name various views and what is included in them.  My suggestion is to always take a step back from any view you create and ask yourself “What is the essential nature of the things I am representing and is the terminology consistent with the viewpoint?”  As an example, look at slide 8 in the TSAF RAS tutorial.  I think it’s an OV-1 and shows operations and activities, and not “functions”, per se.  I like the pg 12 “TSAF” chart a lot, but on pg 10 I’m really not sure just what the message is.   Is it a start on an OOS chart by highlighting which of the viewpoints will be relevant?  If so, I get it.

In the Solar Array slides I made some edits to slide 9 to better (in my humble opinion) reflect the different viewpoint aspects that might appear.  On slide 10 I think this is really Operational View stuff, not Functional.  I also think that the first three items, which can be treated as “Operational” activities, really belong in that elusive “Engineering Viewpoint” that we chose not to explicitly include.

Of course, feel free to ignore this stuff.  Won’t hurt my feelings.

Cheers, Peter

From: Fred Slane <frederick.slane at gmail.com>
Reply-To: "freds at spacestandards.org" <freds at spacestandards.org>
Date: Thursday, June 22, 2023 at 10:49 AM
To: Peter Shames <peter.m.shames at jpl.nasa.gov>
Cc: Shelbun Cheng <shelbun.k.cheng at jpl.nasa.gov>, "Radulescu, Costin (US 9300)" <cradule at jpl.nasa.gov>, Ramon Krosley <r.krosley at andropogon.org>, Robert Rovetto <ontologos at yahoo.com>
Subject: [EXTERNAL] Re: SEA-SA RASDS meeting, 10 July ???

Let's go with the 17th.

Attached is my talking presentation for Solar Arrays with Kei.  Also attached is a draft of a tutorial for SC14 people on how to use a reference architecture.  I call it something else. I used the exemplar method from the tutorial in talking with Kei.  That seemed to work for him. These are rather loose on discipline but successfully got us to start discussing "how" to implement instead of if this is needed at all.

You'll note that a tutorial on how to use a reference architecture for space does not target architects or modelers. It targets people who need use, not create or maintain, the framework for some purpose. In SC14 I plan to "use" the RAS(DS++) for two purposes. 1) talk with the member countries about what is in scope for SC14 work planning (what standards do we need for HSF, OOS, Small Sats, Supp;y Chain, etc.).  This will be a very top level multi-year discussion. 2) Talk with the working group Convenors about how assignments to the WGs cover the waterfront; when they can act quasi-independently and when they need to collaborate (internally to SC14 or externally). This latter part is where we will need to get into some detail on viewpoint objects and correspondences.

Frederick A. Slane
frederick.slane at gmail.com<mailto:frederick.slane at gmail.com>

On Tue, Jun 20, 2023 at 4:38 PM Shames, Peter M (US 312B) <peter.m.shames at jpl.nasa.gov<mailto:peter.m.shames at jpl.nasa.gov>> wrote:
Hi Fred,

I’m on vacation from 26 June through 16 July.

If you guys want to meet on 10 July and make progress on the RASDS draft I think that would be great.  Or you may want to skip it and wait a month (or reschedule for a week later, July 17).  I’m good with any of those outcomes, but would hate to lose what momentum we have.

What’s your pleasure?  Please LMK what you want to do by CoB, Wednesday, 21 June.

As a reminder, my notes from our last meeting, on 12 June, say:

  *   Fred: Produce a new mapping of RASDS to Kei’s Solar Array example.  Model OV-1 and then successive views for different viewpoints (or some other approach …)
  *   All: Feedback in a week (like now) on the mapping of RASDS to the Security Architecture
  *   All: Review your assigned sections.  Provide feedback: an evaluation of whether your materials are solid enough to start writing, an estimate of when you can have draft of your sections ready to review.  Due the end of this week.
  *   Peter: send Security Arch, in current form, to the CCSDS Sec WG and ask for feedback.

Thanks, Peter

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