{"id":262913,"date":"2019-02-06T20:09:58","date_gmt":"2019-02-07T01:09:58","guid":{"rendered":"https:\/\/www.nasa.gov\/?migration=converted-node-439242"},"modified":"2023-07-26T15:08:46","modified_gmt":"2023-07-26T19:08:46","slug":"1-0-introduction","status":"publish","type":"reference","link":"https:\/\/www.nasa.gov\/reference\/1-0-introduction\/","title":{"rendered":"SEH 1.0 Introduction"},"content":{"rendered":"<div id=\"\" class=\" hds-module hds-module-full wp-block-nasa-blocks-secondary-navigation\"><div class=\"hds-secondary-navigation-wrapper z-top width-100 padding-0\"><div id=\"\" class=\"hds-secondary-navigation width-full border-bottom-1px text-center hds-color-mode-dark hds-module hds-module-full wp-block-nasa-blocks-hdsnav\"><button type=\"button\" class=\"hds-secondary-nav-mobile-button display-flex tablet:display-flex desktop:display-none width-full flex-align-center bg-carbon-90 border-color-carbon-80 color-spacesuit-white\" aria-expanded=\"false\" aria-controls=\"hds-secondary-nav-track\"><span>Systems Engineering Handbook<\/span><svg width=\"16\" height=\"16\" alt=\"\" enable-background=\"new 0 0 400 400\" viewBox=\"0 0 400 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"m4.2 122.2 195.1 195.1 196.5-196.6-37.9-38-157.8 157.8-156.8-156.8z\" \/><\/svg><\/button><div class=\"hds-secondary-nav-track grid-container grid-container-extrawide padding-0 tablet:padding-x-3 desktop:padding-x-2 \"><div class=\"hds-secondary-navigation-menu-items\"><nav><ul class=\"usa-nav__primary usa-accordion flex-justify-center margin-0\"><li class=\"usa-nav__primary-item \"><a class=\"usa-nav__link\" href=\"https:\/\/www.nasa.gov\/reference\/systems-engineering-handbook\/\">Home<\/a><\/li><li class=\"usa-nav__primary-item usa-current\"><a class=\"usa-nav__link\" href=\"https:\/\/www.nasa.gov\/reference\/1-0-introduction\/\">1.0 Introduction<\/a><\/li><li class=\"usa-nav__primary-item \"><a class=\"usa-nav__link\" href=\"https:\/\/www.nasa.gov\/reference\/2-0-fundamentals-of-systems-engineering\/\">2.0 Fundamentals of Systems...<\/a><\/li><li class=\"usa-nav__primary-item\"><button type=\"button\" class=\"usa-accordion__button usa-nav__link\" aria-expanded=\"false\" aria-controls=\"basic-nav-section-one\"><span>More<\/span><svg class=\"hds-desktop-submenu-toggle-icon display-none tablet:display-none desktop:display-block\" width=\"16\" height=\"16\" alt=\"\" enable-background=\"new 0 0 400 400\" viewBox=\"0 0 400 400\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"m4.2 122.2 195.1 195.1 196.5-196.6-37.9-38-157.8 157.8-156.8-156.8z\" \/><\/svg><svg class=\"hds-mobile-submenu-toggle-icon display-block tablet:display-block desktop:display-none\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"8\" cy=\"8\" r=\"7.5\" fill=\"#0B3D91\" stroke=\"white\"\/><rect x=\"4\" y=\"7.6001\" width=\"8\" height=\"0.8\" fill=\"white\"\/><rect class=\"hds-mobile-submenu-toggle-icon-line-vertical\" x=\"7.59998\" y=\"12\" width=\"8\" height=\"0.8\" transform=\"rotate(-90 7.59998 12)\" fill=\"white\"\/><\/svg><\/button><ul id=\"basic-nav-section-one\" class=\"usa-nav__submenu\" hidden><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/reference\/3-0-nasa-program-project-life-cycle\/\">3.0 NASA Program\/Project Life...<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/reference\/4-0-system-design-processes\/\">4.0 System Design Processes<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/reference\/5-0-product-realization\/\">5.0 Product Realization<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/reference\/6-0-crosscutting-technical-management\/\">6.0 Crosscutting Technical Management<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/reference\/system-engineering-handbook-appendix\/\">Appendix<\/a><\/li><li class=\"usa-nav__submenu-item \"><a class=\"usa-nav__link\" target=\"_self\" href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2018\/09\/nasa_systems_engineering_handbook_0.pdf?emrc=4096b9\">PDF Version 508 Compliant<\/a><\/li><\/ul><\/ul><\/nav><\/div><\/div><\/div><\/div><\/div>\n\n<div id=\"\" class=\"hds-encyclopedia-intro-banner bg-carbon-05 width-full maxw-full hds-module hds-module-full wp-block-nasa-blocks-encyclopedia-intro-banner\">\t<div class=\"padding-y-0 padding-x-3 desktop:padding-y-0 desktop:padding-x-5\">\n\t\t<div class=\"grid-row flex-align-center\">\n\t\t\t<div class=\"desktop:grid-col-2\"><\/div>\n\t\t\t<div class=\"desktop:grid-col-5 padding-y-4\">\n\t\t\t\t<h1 class=\"display-48 font-weight-extrabold margin-bottom-1\">\n\t\t\t\t\tSEH 1.0 Introduction\t\t\t\t<\/h1>\n\t\t\t\t\t\t\t\t<div class=\"display-flex flex-align-center\">\n\t\t\t\t\t<div class=\"display-flex flex-align-center label-inter color-carbon-60 margin-right-2 desktop:margin-right-3\">\n\t\t\t\t\t\t<svg class=\"square-2 margin-right-1\" viewBox=\"0 0 600 600\" aria-hidden=\"true\"><path d=\"M293 .1C131.3 3.5-.5 136.4.1 300.1c-.7 162.7 132 301.1 302.2 299.9 165.8-1.1 299.2-136.6 297.6-303.2C598.3 132.5 462.9-3.5 293 .1zm8.9 570.6C151.5 571.8 30.6 451.1 29.2 302.4c-1.4-149.6 119.7-273.2 270.9-273 144.2-.2 266.7 114.2 270.4 263.7 3.8 153.2-117.9 276.5-268.6 277.6z\"\/><path d=\"M444.1 450.4c-67.3.1-134.5.1-201.8.1-15.9 0-31.8.1-47.7-.1-7-.1-12.6-4.5-14.4-11-1.9-6.6.4-13.4 6.9-16.6 3.8-1.9 8.5-2.7 12.7-2.8 81.6-.2 163.2-.1 244.7 0 3.9 0 5.6-.6 5.5-5.1-.1-96.5-.1-193.1 0-289.6 0-4.4-1.5-5.3-5.5-5.3-15.7.2-31.5.1-47.2.1-6.8 0-6.8 0-6.8 6.6v167.5c0 1.8-.2 3.5-.3 5.3-.5.2-1.1.5-1.6.7-14.6-14.7-29.2-29.4-45.1-45.4l-44.1 44.1V120.7c-1.7-.2-3-.5-4.2-.5-28.5 0-56.9-.4-85.4.1-34.3.6-59.6 26-59.7 60.1-.3 85.1-.1 170.2-.1 255.3 0 8.3 2.2 16 6.7 23 9.2 14.5 22.7 21.3 39.7 21.4 35.3.1 70.6 0 105.9 0 47.5 0 95.1 0 142.6.1 3.6 0 5.1-.8 4.9-4.8-.3-6.3-.4-12.7 0-19.1.5-4.8-1.2-5.9-5.7-5.9z\"\/><\/svg>\n\t\t\t\t\t\t<span>Encyclopedia<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"label-inter color-carbon-60\">Updated Feb 6, 2019<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"desktop:grid-col-5 desktop:padding-left-5 padding-top-3\">\n\t\t\t\t<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><img decoding=\"async\" loading=\"lazy\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"\/wp-content\/plugins\/nasa-blocks\/assets\/images\/encyclopedia-intro-banner\/encyclopedia-intro-banner-example-01.jpg\" ><\/figure><\/div>\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t<\/div>\n\n\n<h1 class=\"wp-block-heading\">1.1 Purpose<\/h1>\n\n\n\n<p>This handbook is intended to provide general guidance and information on systems engineering that will be useful to the NASA community. It provides a generic description of Systems Engineering (SE) as it should be applied throughout NASA. A goal of the handbook is to increase awareness and consistency across the Agency and advance the practice of SE. This handbook provides perspectives relevant to NASA and data particular to NASA.<\/p>\n\n\n\n<p>This handbook should be used as a companion for implementing NPR 7123.1, Systems Engineering Processes and Requirements, as well as the Center-specific handbooks and directives developed for implementing systems engineering at NASA. It provides a companion reference book for the various systems engineering-related training being offered under NASA\u2019s auspices.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">1.2 Scope and Depth<\/h1>\n\n\n\n<p>This handbook describes systems engineering best practices that should be incorporated in the development and implementation of large and small NASA programs and projects. The engineering of NASA systems requires a systematic and disciplined set of processes that are applied recursively and iteratively for the design, development, operation, maintenance, and closeout of systems throughout the life cycle of the programs and projects. The scope of this handbook includes systems engineering functions regardless of whether they are performed by a manager or an engineer, in-house or by a contractor.<\/p>\n\n\n\n<p>There are many Center-specific handbooks and directives as well as textbooks that can be consulted for in-depth tutorials. For guidance on systems engineering for information technology projects, refer to Office of Chief Information Officer Information Technology Systems Engineering Handbook Version 2.0. For guidance on entrance and exit criteria for milestone reviews of software projects, refer to NASA-HDBK-2203, NASA Software Engineering Handbook. A NASA systems engineer can also participate in the NASA Engineering Network (NEN) Systems Engineering Community of Practice, located at <a href=\"https:\/\/nen.nasa.gov\/web\/se\" rel=\"noopener\">https:\/\/nen.nasa.gov\/web\/se<\/a>. This Web site includes many resources useful to systems engineers, including document templates for many of the work products and milestone review presentations required by the NASA SE process.<\/p>\n\n\n\n<p>This handbook is applicable to NASA space flight projects of all sizes and to research and development programs and projects. While all 17 processes are applicable to all projects, the amount of formality, depth of documentation, and timescales are varied as appropriate for the type, size, and complexity of the project. References to \u201cdocuments\u201d are intended to include not only paper or digital files but also models, graphics, drawings, or other appropriate forms that capture the intended information.<\/p>\n\n\n\n<p>For a more in-depth discussion of the principles provided in this handbook, refer to the NASA Expanded Guidance for SE document which can be found at <a href=\"https:\/\/nen.nasa.gov\/web\/se\/doc-repository\" rel=\"noopener\">https:\/\/nen.nasa.gov\/web\/se\/doc-repository<\/a>. This handbook is an abridged version of that reference.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1.1 Purpose This handbook is intended to provide general guidance and information on systems engineering that will be useful to the NASA community. It provides a generic description of Systems Engineering (SE) as it should be applied throughout NASA. A goal of the handbook is to increase awareness and consistency across the Agency and advance [...]<\/p>\n","protected":false},"author":93,"featured_media":0,"template":"","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[]},"categories":[],"news-tags":[],"internal-terms":[12700],"coauthors":[],"parsely":{"version":"1.1.0","meta":{"@context":"https:\/\/schema.org","@type":"WebPage","headline":"SEH 1.0 Introduction","url":"https:\/\/www.nasa.gov\/reference\/1-0-introduction\/","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/www.nasa.gov\/reference\/1-0-introduction\/"},"thumbnailUrl":"","image":{"@type":"ImageObject","url":""},"articleSection":"General","author":[{"@type":"Person","name":"Garrett Shea"}],"creator":["Garrett Shea"],"publisher":{"@type":"Organization","name":"NASA","logo":"https:\/\/www.nasa.gov\/wp-content\/themes\/nasa\/assets\/images\/nasa-logo.svg"},"keywords":[],"dateCreated":"2019-02-07T01:09:58Z","datePublished":"2019-02-07T01:09:58Z","dateModified":"2023-07-26T19:08:46Z"},"rendered":"<meta name=\"parsely-title\" content=\"SEH 1.0 Introduction\" \/>\n<meta name=\"parsely-link\" content=\"https:\/\/www.nasa.gov\/reference\/1-0-introduction\/\" \/>\n<meta name=\"parsely-type\" content=\"index\" \/>\n<meta name=\"parsely-pub-date\" content=\"2019-02-07T01:09:58Z\" \/>\n<meta name=\"parsely-section\" content=\"General\" \/>\n<meta name=\"parsely-author\" content=\"Garrett Shea\" \/>","tracker_url":"https:\/\/cdn.parsely.com\/keys\/nasa.gov\/p.js"},"read_time":3,"_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/reference\/262913"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/reference"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/reference"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/93"}],"version-history":[{"count":3,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/reference\/262913\/revisions"}],"predecessor-version":[{"id":401294,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/reference\/262913\/revisions\/401294"}],"wp:attachment":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media?parent=262913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/categories?post=262913"},{"taxonomy":"news-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/news-tags?post=262913"},{"taxonomy":"internal-terms","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/internal-terms?post=262913"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/coauthors?post=262913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}