1 min readProgram Manager Al Bowers with Flying Wing ModelNASASep 21, 2015 Image Article Program Manager Al Bowers with Flying Wing Model IMG_0983RotACsm Al Bowers with the Preliminary Research Aerodynamic Design to Lower Drag (Prandtl-D) wind tunnel model in the 12-foot wind tunnel. 2015 Submitted photo courtesy of G. Lee Pollard