&lt;p&gt;This research is part of an innovative effort to use hyperelastic materials&amp;nbsp;to produce flexible and seamless aircraft structures that reduce drag&amp;nbsp;and minimize acoustic noise. Hyperelastic materials, such as rubber,&amp;nbsp;have a non-linear stress-strain relationship, which often complicates the&amp;nbsp;modeling process. Therefore, CIF funding is being used to gain increased&amp;nbsp;knowledge regarding the properties of hyperelastic materials and develop&amp;nbsp;improved finite element analysis (FEA) models. This research effort&amp;nbsp;builds on the knowledge gained from the Adaptive Compliant Trailing&amp;nbsp;Edge (ACTE) experimental flight research project. The ACTE project&amp;nbsp;will demonstrate the structure technology in flight, and this technology&amp;nbsp;has been shown to improve aircraft aerodynamic efficiency and reduce&amp;nbsp;airport-area noise generated during takeoffs and landings.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Work to date:&lt;/strong&gt; The Armstrong development team has fabricated the biaxial&amp;nbsp;strain test hardware and completed initial bubble test planning. The team&amp;nbsp;is working to obtain biaxial strain properties and develop an FEA model&amp;nbsp;that simulates the material properties and failure characteristics. In 2014, the team fine-tuned the modeling by&amp;nbsp;comparing the predicted output to an actual bubble test of the material.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Partner:&lt;/strong&gt; FlexSys Inc. is the industry partner on this effort, as it owns the&amp;nbsp;design patent.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Benefits&lt;/strong&gt;&lt;/p&gt;&lt;ul&gt;&lt;li&gt;&lt;strong&gt;Economical:&lt;/strong&gt; Use of hyperelastic material&amp;nbsp;increases fuel efficiency by reducing drag&lt;/li&gt;&lt;li&gt;&lt;strong&gt;Quieter:&lt;/strong&gt; Novel wing flap reduces noise&amp;nbsp;associated with takeoffs and landings both in&amp;nbsp;the aircraft cabin and on the ground&lt;/li&gt;&lt;/ul&gt;&lt;p&gt;&lt;strong&gt;Applications&lt;/strong&gt;&lt;/p&gt;&lt;ul&gt;&lt;li&gt;Aircraft wing flaps&lt;/li&gt;&lt;li&gt;Helicopter blades&lt;/li&gt;&lt;li&gt;Motor vehicles&lt;/li&gt;&lt;li&gt;Trains&lt;/li&gt;&lt;li&gt;Ships&lt;/li&gt;&lt;/ul&gt;