National Transonic Facility Public Geometry Release and Summary

This paper highlights the recent release of the NASA National Transonic Facility high-speed leg geometry and gives an overview of the experimental facility with a brief discussion of the released geometry. A detailed laser scan of the facility yielded a point cloud of data points from which high-quality computer aided design surfaces were generated. The resulting loft, currently denoted as NTF_highspeedleg_definition_v1p9 released in June 2025, includes the inlet, contraction, test section, wall slots, upper swept strut, arc sector, and diffuser. The geometry, which is posted on the Drag Prediction Workshop website (currently at https://aiaa-dpw.larc.nasa.gov/ntf.html), has been approved for public use. It is hoped that high-quality simulations of an experimental model in the test section will help quantify the effect of the test environment relative to free-air computational simulations.