This Aerospace Recommended Practice (ARP) provides guidance on developing requirements for systems that include Integrated Vehicle Health Management (IVHM) capability [REF1], [REF18]. IVHM is increasingly being implemented on military and commercial aircraft. Some examples include the F-35 Joint Strike Fighter (JSF) [REF1] and the AH-64 Apache [REF3] in the military domain, and the B787 [REF4] and A350XWB [REF5] in the commercial domain. This document provides a systematic approach for developing requirements related to the IVHM capabilities of a vehicle system. This document is not intended to repeat general guidelines on good requirements writing [REF13], [REF20]. Instead, the focus is on the unique elements, which need to be considered for IVHM and the resulting specific guidelines that will help define better requirements and hence better systems. The multi-faceted nature of IVHM should include the process of requirements gathering. Therefore, this document presents some guidance on how to go about this task. The document also includes some case studies that illustrate, in a practical manner, what a good set of IVHM requirements might look like. These have been taken from real life examples, but have been generalized for the purpose of this ARP.
Section 3 of this ARP introduces the general requirements and considerations from the perspective of various stakeholders. This is followed by Section 4 describing the entire systems engineering process for IVHM systems showing how IVHM requirements are linked to other systems engineering elements, such as the verification and validation (V&V) process. Section 5 provides a detailed description of the requirements breakdown structure and writing process, including the taxonomy of a requirements document. Section 6 provides some examples of IVHM core (stakeholder) requirements for representative air vehicles, and Section 7 provides an application of the guidelines as an example.
Rationale
The term Integrated Vehicle Health Management (IVHM) encompasses a set of capabilities that enable efficient sustainable operation and maintenance of components and subsystems within aerospace platforms. It is defined as “the unified capability of a system of systems to assess current or future state of member system health and integrate that picture of system health within a framework of resources and operational demand” [REF1]. Currently, there is little guidance addressing the development of IVHM system requirements. Current practitioners use knowledge developed exclusively through practical experience rather than following an established process. Systems with IVHM capability have unique challenges, which require a designer to look beyond their own field of expertise and consider the constraints and specifications of other interlinked systems. This Aerospace Recommended Practice provides working engineers and program managers overall guidance on all the elements of IVHM they need to consider when developing design requirements for a particular IVHM system.
The scope of the committee is to accumulate, develop and disseminate integrated vehicle health management system technology and experience relating to the following groups --Civil fixed and rotary wing air vehicles, Military fixed and rotary wing air vehicles, Unmanned fixed and rotary wing air vehicles, Data processing equipment, systems and software, and Air vehicle maintenance platforms. While aspects pertaining to space vehicles are not specifically included, the committee’s scope could be expanded to include space should the need or demand so require.
* Redlines comparisons are available for those standards
listed in the Revision History that contain a radio button. A
redline comparison of the current version against a revision is
accomplished by selecting the radio button next to the standard and
then selecting 'compare'. At this time, Redline versions only exist
for some AMS standards. SAE will continue to add redline versioning
with ongoing updates to SAE MOBILUS.
View/Annotate
Content Loading, Please Wait
Document Preview
Content Loading, Please Wait
Document Comparison
Content Loading, Please Wait
Download
A list of downloadable items.
Product Code
Document Title
File Type
Download
ARP6883
Guidelines for Writing IVHM Requirements for Aerospace Systems
Export Metadata
This modal will allow the user to download citation information or export specific fields of data into one of three file formats: Excel, comma-separated values, or text.
You are currently not logged into your Dashboard account, which is required for annotating.
Please select Login to login or register for the Dashboard. Select Continue to view the content without the ability to annotate.
Redline Warning
You are currently not logged into your Dashboard account, which is required for annotating.
Please select Login to login or register for the Dashboard. Select Continue to view the content without the ability to annotate.
Data Set Warning
Guidelines for Writing IVHM Requirements for Aerospace Systems
SAE Journal Subscriptions are available in a variety of options, which include electronic, electronic with back file, and archive. For detailed information and options, please complete the following:
Content Request
Check My Access!
You may already have access to the Aerospace Standard, Guidelines for Writing IVHM Requirements for Aerospace Systems
Subscription Access
If you have Subscription Access with a username and password, please login below.
Institutional Login
If you have Institutional Access to SAE MOBILUS, using a predetermined organizational login utilizing single-sign-on (Shibboleth), please login below. To request institutional access to SAE MOBILUS, please complete the institutional subscription information form.
Purchase
If you do not have access to SAE MOBILUS via username/password or institutional access, you can still purchase the Aerospace Standard, Guidelines for Writing IVHM Requirements for Aerospace Systems.
Search Tips: Search Operators:AND, OR, NOT; Wild Cards; Using Quotes
SAE MOBILUS® Search Tips
Please note: All terms not contained within quotes, will be evaluated using the OR operator. This means that your search results will contain all results that contain ANY of the entered terms.
AND, OR, NOT
SAE MOBILUS supports the use of the AND, OR and NOT BOOLEAN operators ONLY function with the Advanced Search.
Wild Cards
Using the asterisk, ( * ) allows you to search for a partial word. For example, entering a keyword search of aero* will search for any word beginning with aero.
Using the question mark, ( ? ) allows you to search for a word with a single character wildcard. For example, searching for t?re would match both tire and tyre
Using Quotes
Words in double quotes " " are treated as a phrase. Conducting a search for "heat model" will return all results in which the exact phrase "heat model" is found, while "heat modeling" would NOT be included.
A term combined with a phrase will be joined with an OR operator.
Searching for Standards
When searching for a standard please use the entire Document Number assigned, which includes the abbreviation. A space can be used, or omitted between the abbreviation and number.