&lt;p&gt;Switching from metallic to composite construction holds the&amp;nbsp;potential to dramatically increase the performance capabilities of&amp;nbsp;future space systems through a dramatic reduction in weight. A&amp;nbsp;potential initial target application for the composite technology is&amp;nbsp;an upgrade to the upper stage of NASA&amp;#39;s Space Launch System&amp;nbsp;heavy-lift rocket.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;2.4-meter diameter Tank Test Summary&lt;/strong&gt;&lt;/p&gt;&lt;p&gt;Built by Boeing at their Tukwila, Wash., facility, the tank arrived&amp;nbsp;at NASA in late 2012. On June 25, 2013 at NASA MSFC, the 2.4m diameter all-composite cryogenic tank was successfully pressure tested. The test met all requirements: stepwise fill with liq&amp;shy;uid hydrogen (&amp;ndash;423 &amp;deg;F) to 90&#37; volume capacity followed by pressurizing the tank to 135 psig. The 2.4m tank was then cycled through 20 pressure/vent cycles, measuring hydrogen gas permeation on the tank dome.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;5.5m Tank Test Summary&lt;/strong&gt;&lt;/p&gt;&lt;p&gt;NASA&amp;rsquo;s Super Guppy, a wide-bodied cargo aircraft, landed at the Redstone Army Airfield near Huntsville, Ala. on March 26, 2014 and since then NASA has completed a demand&amp;shy;ing series of tests inside the test stand at MSFC. Engineers added structural loads to the tank to replicate the physical stresses launch vehicles experience during flight.&lt;/p&gt;&lt;p&gt;In other tests, the tank successfully maintained fuels at extremely low temperatures and operated at various pres&amp;shy;sures. Engineers filled the tank with almost 30,000 gallons of liquid hydrogen chilled to &amp;ndash;423 &amp;deg;F, and repeatedly cycled the pressure between 20 to 53 pounds per square inch &amp;ndash; the pressure limit set for the tests.&lt;/p&gt;&lt;p&gt;These successful tests marked an important milestone on the&amp;nbsp;path to demonstrating the composite cryogenic tanks needed to&amp;nbsp;accomplish the next generation of deep space missions. This&amp;nbsp;investment in game changing space technology will help enable&amp;nbsp;NASA&amp;#39;s exploration of deep space while directly benefiting&amp;nbsp;American industrial capability in the manufacturing and use of&amp;nbsp;composites.&lt;/p&gt;&lt;p&gt;Additional Information:&lt;/p&gt;&lt;p&gt;In September 2011, NASA awarded Boeing the contract to design, manufacture and test two lightweight composite cryogenic propellant tanks.&lt;/p&gt;&lt;p&gt;CCTD was an agency-wide effort with Marshall Space Flight Center (MSFC) leading project management, manufacturing &amp;amp; test, Glenn Research Center (GRC) leading the materials, and Langley Research Center (LaRC) leading structures effort for this project. Significant contributions from LaRC &amp;amp; GRC loads/stress personnel contributed to the understanding of thermal/ mechanical strain response while undergoing testing at cryogenic temperatures. The project finalized in September 2014.&lt;/p&gt;&lt;p&gt;The composite tank project provided a great deal of expe&amp;shy;rience and improved confidence in utilizing composites and therefore is changing the way we look at composites for spacecraft applications.&lt;/p&gt;