{"id":13,"date":"2023-06-14T14:07:20","date_gmt":"2023-06-14T14:07:20","guid":{"rendered":"https:\/\/sections.nar.org\/317\/?page_id=13"},"modified":"2025-05-21T21:01:00","modified_gmt":"2025-05-21T21:01:00","slug":"arc","status":"publish","type":"page","link":"https:\/\/sections.nar.org\/317\/arc\/","title":{"rendered":"ARC"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-201 alignright\" src=\"http:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-182x300.jpg\" alt=\"\" width=\"182\" height=\"300\" srcset=\"https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-182x300.jpg 182w, https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-621x1024.jpg 621w, https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-768x1266.jpg 768w, https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-931x1536.jpg 931w, https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-1242x2048.jpg 1242w, https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1-720x1187.jpg 720w, https:\/\/sections.nar.org\/317\/wp-content\/uploads\/sites\/5\/2024\/12\/317_TARC2-1.jpg 1265w\" sizes=\"(max-width: 182px) 100vw, 182px\" \/>The American Rocketry Challenge (ARC) rules for 2025-2026 have been announced (see <a href=\"http:\/\/www.rocketcontest.org\">www.rocketcontest.org<\/a>). Major requirements include:<\/p>\n<ul>\n<li>Rocket must carry one egg, in any orientation.<\/li>\n<li>Target altitude is 750 feet for qualification flights.<\/li>\n<li>At ARC Finals, target altitudes will change and will be between 725 and 775 feet.<\/li>\n<li>Target duration is 36-39 seconds for all flights.<\/li>\n<li>Rocket body tube must be the same diameter from nose cone to tail end.\u00a0 Diameter of the rocket body tube must be at least 47 mm (1.85&#8243;).<\/li>\n<li>Rocket must recover safely with all parts connected (tethered) together, using one or more parachutes for recovery.<\/li>\n<li>Rocket must carry an altimeter: Perfectflite Pnut or Firefly, or Jolly Logic AltimeterOne or AltimeterTwo.<\/li>\n<li>Rocket length must be 650 mm (25.6\u201d) or greater.<\/li>\n<li>Rocket mass at liftoff, including motor(s), must be 650 grams (22.9 ounces) or less.<\/li>\n<li>Motor(s) maximum total impulse = 80 N-sec (F motor).<\/li>\n<\/ul>\n<p>Safe operations are our top priority at DART launches. Requirements for flying TARC models at DART launches include:<\/p>\n<ul>\n<li><strong>Rail launch (6&#8242; or longer) is required.<\/strong> 1\/4&#8243; launch rods (or similar) are not acceptable.<\/li>\n<li><strong>Positive motor retention is required.<\/strong> Taping motors or friction fit is not allowed. [Note: this is already a TARC requirement, and we will enforce this requirement.]<\/li>\n<li><strong>Minimum stability margin of 1.5 diameters is required.<\/strong> Inadequate fin size can lead to dynamic stability problem that adversely affects trajectory and performance.<\/li>\n<li><strong>Simulation report (Rocksim, OpenRocket, or similar) shall be presented<\/strong> documenting mass, CG, CP, max altitude, and time to apogee (i.e., make sure motor has appropriate delay).<\/li>\n<li><strong>Fabric parachutes are required.<\/strong> Plastic or &#8220;garbage bag&#8221; parachutes are not permitted.<\/li>\n<li><strong>Safety check. <\/strong>Demonstrate motor retention, shock cord attachment\/strength, proper fit of coupler joints, etc.<\/li>\n<li>Follow instructions from DART range personnel. <strong>Decisions by the DART Range Safety Officer are final.<\/strong><\/li>\n<\/ul>\n<p>Please contact DART for additional information regarding our support for TARC teams.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The American Rocketry Challenge (ARC) rules for 2025-2026 have been announced (see www.rocketcontest.org). Major requirements include: Rocket must carry one egg, in any orientation. Target altitude is 750 feet for[&#8230;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/pages\/13"}],"collection":[{"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/comments?post=13"}],"version-history":[{"count":8,"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/pages\/13\/revisions"}],"predecessor-version":[{"id":230,"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/pages\/13\/revisions\/230"}],"wp:attachment":[{"href":"https:\/\/sections.nar.org\/317\/wp-json\/wp\/v2\/media?parent=13"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}