Model Deformation Measurements of the Truss-Braced Wing Aircraft in the NASA Ames 11-By 11-Ft Transonic Wind Tunnel

摘要

Model deformation measurements were made by stereophotogrammetry on the NASA/Boeing SUGAR Truss-Braced Wing model in the 11-by 11-foot test section of the Unitary Plan Wind Tunnel at NASA Ames Research Center. Aeroelastic bending and twist on the wing as well as model attitude were measured for different model configurations including a baseline strut, an alternate strut, and an unsupported wing (no strut). These data are reported for Mach numbers of 0.745 and 0.79 and for angles of attack between -1° and 3°. A significant increase in wing stiffness was detected with the presence of both struts. Wing twist due to bending was not significantly affected by the presence of a strut, and a comparison between bending of different configurations suggests some model asymmetry. Challenges affecting measurement accuracy are discussed.