This section of the SWEHB is reserved for the development of a set of Human Rated Requirements based on NASA-STD-8719.29.

Several pages will be developed as prototypes for this project. Some pages may be published in the SWEHBVD.

1. Introduction 

This new set of software requirements is a model based on the following documents:

  • The NASA-STD-8719.29 "NASA Technical Requirements for Human-Rating" is the basis for this new section of requirements.
  • There is a companion document "Additional NASA software technical requirements for human.docx" which breaks out the software related requirements. 

The model also contains additional support pages necessary to demonstrate the full scope of the new requirements.  

1.1 Model Pages

The pages in the current model include: 

2. New Pages

2.1 New "C. Software Project Requirements" page

This new page has an additional section below the Chapter 5 table. This new table contains the Software Human Rated Requirements identified in the "Additional NASA software technical requirements for human.docx" document. 

New C. Project Software Requirements. It identifies all 14 of the new software requirements with 5 of them linked to new SWE pages. 

Panel Title has green background.  

2.2 New Topic "7.24 - Human Rated Software Requirements" 

This Topic is a paraphrasing of the document "Additional NASA software technical requirements for human.docx". All of the content from this document is in this topic except for the Italicized text which is embedded in the appropriate new SWE.

7.24 - Human Rated Software Requirements. This new topic will be added to the existing D. Topics page when it is released. 

This new topic references NASA-STD-8719.29 which is SWEREF-458. This topic: 

  • Identifies requirements that are are Software Human Rated Requirements 
  • Explains why certain requirements are NOT Software Requirements (Rational column in the table)
  • Offers other amplifications or clarifications about the Human Rated Requirements

In the new topic, ALL of the paragraphs from the standard, that are phrased like a requirement (in the form of a SHALL statement), are broken out in the Requirements tab. Only the ones identified as Software Human Rated are given SWE numbers.  Some have SWE pages built out (5 so far for this demo). 

 2.3 Full text of NASA-STD-8719.29

The full text of this document has been reproduced in NASA-STD-8719.29. As quotations are derived from it they will be child pages under the main page,


3. Requirements

The NASA-STD-8719.29 "NASA Technical Requirements for Human-Rating" is the basis for this new section of requirements.

There is a companion document "Additional NASA software technical requirements for human.docx" which identifies the Software Human Related Requirements. 

3.1 Project Software Requirements

Requirements pages are modeled after the current SWE pages and only a few currently have contents. In total there are 14 identified as Software Human Rated. 

3.2 HR Series

The numbers for this series are built from the paragraph numbers in the STD. By keeping it as a 7 character string. all of the other macros that depend on this format for requirements can be used without the need for changes. This includes the SWEREF and reference related macros. The requirement number is the paragraph number without the decimal points and without the leading "4" ( section number). We will need to be custodians of the numbering because there is not a numbering scheme in the NASA-STD-8719.29 that will work for this project.

These requirements were derived from the document "Additional NASA software technical requirements for human.docx". Additional requirements exist on the standard and may be factored in later. SWE Titles were derived from paraphrasing the requirement. Many of the components of a SWE are found in these example SWEs. 

The table below contains links to new SWEs in the 8xx series along with the requirement statement.

SWE TitleRequirement

HR-31 - Single Failure Tolerance

HR-33 - Inadvertent Operator Action

HR-34 - Operator Action With Single System Failure

HR-35 - Mitigate Hazardous Behavior Of Critical Software

HR-36 - Detect And Annunciate Faults

HR-37 - Fault Recovery

HR-38 - Data Analysis

HR-39 - Autonomous Operation

HR-41 - Crew Operations

HR-42 - Crew Override

HR-43 - Crew Control

HR-51 - Crew Flight Control

HR-7142 - Ground Initiate Ascent Abort Sequence

HR-715 - Interface With Range Safety Destruct System

4. Other Sections in SWEs

4.1 Tab 1 - Requirement

The content of this tab is well regimented. Only a few items will need to be updated: 

  • Notes - may need to be added if there are none in NASA-STD-8719.29
  • History - needs to be built 
  • Applicability across classes table - May need to be added
  • Activity - needs to be identified and added to the Activity scheme

4.2 Tab 2 - Rationale

Rational was derived from NASA-STD-8719.29 in some instances. This may needed to be updated. 

4.3 Tab 3 - Guidance

Content from NASA-STD-8719.29 was added here where appropriate. Additional guidance may need to be added. 

4.4 Tab 4 - Small Projects

Content for this tab needs to be developed. 

4.5 Tab 5 - Resources

Where appropriate, references need to be identified and added to the SWEs. 

4.6 Tab 6 - Lessons Learned

Some requirements in NASA-STD-8719.29 contain acknowledgements of Lessons Learned where the requirement would be applicable. Each of these needs to be researched and added to the SWE's tab 6 Lessons Learned. 

4.7 Tab 7 - SA

Content will be needed in this tab. 

5. To Do

These items are to be done as a part of implementing the HR requirements. 

DescriptionItems Planned / Completed (green)

Notes

Add a SWEREF for NASA-STD-8719.29 SWEREF-458

added to HR-31

New "C. Software Project Requirements - HR" page  New C. Project Software Requirements 
Build 5 Test requirement pages

HR-31 - Single Failure Tolerance

HR-33 - Inadvertent Operator Action

HR-35 - Mitigate Hazardous Behavior Of Critical Software

HR-41 - Crew Operations

HR-51 - Crew Flight Control

All 5 exist and have a modest amount of content in them coming from NASA-STD-8719.29. 

All have been renumbered into the HR series


Turn "Additional NASA software technical requirements for human.docx" into Topic 7.24 - Human Rated Software Requirements that points to the HR requirements. New Topic 7.24 - Human Rated Software Requirements added

Added 14 HR requirement pages


Break out reqs from STD into child pages and put include page macros where requirements need to appear. 


Research each SWE for possible Lessons Learned

Example, para 4.7.7.3 references a Soyuz mission that fell short. A modification was made and successfully utilized on a later mission. 

Add LL to SWE tab 6 as appropriate


Build Word Doc pages for content developers to use in providing content. 


not necessary

Add content to all new SWEs. 

Tim is working through this on all new pages. 

Lore will make a pass through all pages adding content as necessary. 


Review all pages after content is added to cleanup references. 



Update SWEHB Introduction page to discuss the addition of HR requirements in NASA-STD-8719.29