{"projectId":94222,"project":{"projectId":94222,"title":"Higher Aspect Ratio Optimal Wing","startDate":"2013-10-01","startYear":2013,"startMonth":10,"endDate":"2020-09-30","endYear":2020,"endMonth":9,"programId":18792,"program":{"ableToSelect":false,"acronym":"AAVP","isActive":true,"description":"<p>The Advanced Air Vehicles Program (AAVP) Program develops knowledge, technologies, tools, and innovative concepts to enable safe, new aircraft that will fly faster, more cleanly and quietly, and use fuel far more efficiently. The nation needs these aircraft to protect and preserve the environment and for the projected growth in both domestic and international air transportation utilization. NASA research is inherent in every major modern U.S. aircraft, and the type of research performed by the AAV Program will prime the technology pipeline, enabling continued U.S. leadership, competitiveness, and jobs in the future. Technologies and design capabilities developed for these advanced vehicles will integrate multiple, simultaneous vehicle performance considerations including fuel burn, noise, emissions, and intrinsic safety. 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The High Aspect Ratio Optimal Wing Technical Challenge 2.1 (TC2.1) explored multiple approaches to address the challenges with increasing aspect ratio. The five technical approaches were Performance Adaptive AeroelasticWing (PAAW), Passive AeroelasticTailored Wing (PATW), Active Flow Control Wing (ACFW), Natural Laminar Flow Wing, (NLFW) and Transonic Truss Braced Wing (TTBW). Multiple wind tunnel, flight, and ground tests were completed to mature technologies that can contribute to reduced weight, reduced drag, and increased aspect ratio. The results from the technical challenge will enable further technology development of any future transonic truss-braced wing concepts.<br /> •A systems-level assessment of HARW technologies was completed in support of TC2.1. The vehicle assessments performed for the Common Research Model (CRM) and TTBW suggest that fuel burn reductions resulting from HARW technology applications are not limited by aspect ratio over the ranges investigated and that the TC2.1 goals are realizable. •For each technical approach concept, the completed milestones and overview of research are documented through 3Q FY 2020. As of 3Q FY20, the HARW research team has generated 196 publications/presentations to share the knowledge gained, and the list of publications are included in the following slides.<br /> •Beginning Technology Readiness Level (TRL) ~2 (different for individual technical approaches), Final TRL 3 (system); TRL 4-5 (individual technical approaches)</p>  <p> </p> ","infoText":"Closed out","infoTextExtra":"Project closed out","isIndirect":false,"infusionPretty":"Other","isBiDirectional":false,"technologyOutcomeDateString":"Sep 2020","technologyOutcomeDateFullString":"September 2020","technologyOutcomePartnerPretty":"Other","technologyOutcomePathPretty":"Closed Out","technologyOutcomeRationalePretty":"Other"}],"libraryItems":[{"files":[],"libraryItemId":313533,"title":"Project Website","libraryItemType":"Link","url":"https://www.nasa.gov/aeroresearch/programs/aavp/aatt","projectId":94222,"internalOnly":false,"publishedDateString":"","entryDateString":"01/22/25 01:10 AM","libraryItemTypePretty":"Link","modifiedDateString":"10/25/24 02:23 PM"}],"states":[{"abbreviation":"VA","country":{"abbreviation":"US","countryId":236,"name":"United States"},"countryId":236,"name":"Virginia","stateTerritoryId":7,"isTerritory":false}],"endDateString":"Sep 2020","startDateString":"Oct 2013"}}