The Transonic Dynamics Tunnel (TDT) is a closed-circuit, continuous flow, variable pressure wind tunnel. The TDT is dedicated to identifying and solving aeroelasticity issues confronting fixed-wing aircraft and helicopter and tiltrotor configurations.
The Transonic Dynamics Tunnel (TDT) is a closed-circuit, continuous-flow, variable-pressure wind tunnel capable of using either air or R-134a as a test medium.
The TDT is dedicated to identifying, understanding, and solving aeroelastic issues confronting fixed-wing aircraft, helicopter, and tiltrotor configurations. Rotary-wing tests at the TDT have investigated performance, loads, and stability characteristics, while fixed-wing flutter, buffet, and divergence have been scrutinized as well.
NASA Ames Research Center aerial from the NFAC 80-by-120-foot wind tunnel inlet vanes N221B with Power Substation North N225B, Office Trailers TR35A, TR35, and TR35C in forground looking west across center. The image was taken by Jonas Jonsson and Zachary Roberts, General Engineers with the Ames Aeronautics Projects Office, during a drone flight over the center.