Project Title

NASA core Flight System (cFS) as a CCSDS Onboard Reference Architecture



Document Number


4.02 Application Support Services Working Group

Document Type


Description of Document

This experimental report provides an overview of NASA’s cFS software architecture and the integration and use of CCSDS standards to enhance interoperability, system commonality. It shall cover the following topics: 1. Overview of NASA’s cFS software architecture and tool chains. 2. Use of CCSDS standards in the architecture, development tools, and ground systems. 3. Benefits of applied standards to the development, maintenance and operations of spacecraft systems.

Applicable Patents

There are no patent issues for this technology that are known by the CCSDS community

Patent Comments

Survey of Similar Standards
Documents or Projects
Undertaken in Other Bodies
and elsewhere in CCSDS

In parallel there is work planned on a Orange book covering the SAVIOR and CAST architectures.


Book Editor


Book Editor Resources

4 mm

Prototype 1

Not Required

Prototype 1 Resources

Prototype 2

Not Required

Prototype 2 Resources

Prototype 3

Prototype 3 Resources


Monitor Only


Resource Comments

The schedule for this book is longer due to resource availability. This should not affect total funding other than spanning 2 NASA fiscal years .


Legend for Schedule Milestones
Orange Bullet = Required for Orange Books
Green Bullet = Required for Green Books
Magenta Bullet = Required for Magenta Books
Blue Bullet = Required for Blue Books
Note - Red Books are Draft Blue/Magenta Books

Schedule Milestones
Orange BookGreen BookMagenta BookBlue Book
Original Completion Date
(Date in M/D/YYYY format.)
(Date in M/D/YYYY format.)
Project ApprovedOrange BulletGreen BulletMagenta BulletBlue Bullet
Project Start DateOrange BulletGreen BulletMagenta BulletBlue Bullet10/11/2016Work on the book has started
Internal WG Review
First Draft Circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet8/8/2017Extended, as cFS architecture is developing support for distributed/partitioned systems and will reference SOIS subnetwork books
First Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet9/26/2017Comment time extended due to summer holidays
Second draft circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet10/31/2017Will discuss book at the Fall meeting
Second Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet12/5/2017
Final WB Submitted to AD for Further ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet1/9/2018
External Milestones
Secretariat Document ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet
First Agency ReviewMagenta BulletBlue Bullet
RID ResolutionMagenta BulletBlue Bullet
Secretariat Document Processing 2Magenta BulletBlue Bullet
Final Agency ReviewMagenta BulletBlue Bullet
RID ResolutionMagenta BulletBlue Bullet
First Prototype DevelopmentBlue Bullet
Second Prototype DevelopmentBlue Bullet
CMC ApprovalOrange BulletGreen BulletMagenta BulletBlue Bullet5/15/2018
Total Time to Complete
(in months)
Version: 340.0
Created at 7/1/2015 2:42 AM by Suess Martin
Last modified at 12/9/2021 9:07 AM by Brian Oliver