80- by 120-Foot Wind Tunnel, wind tunnel at NASA Ames Research Center

The 80- by 120-foot wind tunnel is an aerodynamic testing facility located in Santa Clara County designed to simulate airflow around objects and structures. The space accommodates large-scale models and full-size vehicles to study how air moves and interacts with surfaces under controlled laboratory conditions.

Built by NASA in the early 1980s at the Ames Research Center in Mountain View, the 80- by 120-foot wind tunnel opened as part of a national drive to test full-scale aircraft and rotorcraft. Its 1980s-era drive system and closed-return circuit were designed for large models and full-size vehicles, and the tunnel supported NASA and industry aerodynamic research for decades before operations wound down in the 2000s.

The tunnel sits within NASA Ames Research Center at Moffett Field, so entry passes through the center's own gate procedures rather than a public entrance. There is no visitor route to the tunnel itself; access is arranged through NASA Ames protocol or the facility's operating contractor. Off-site, the surrounding streets and the Moffett Field Historical Society museum are the closest public vantage points.

Built by NACA, the predecessor of NASA, the tunnel's 80-by-120-foot test section was the largest in the world when it opened in 1944. Air is driven by fans and turned through a closed loop, letting engineers study full aircraft and, later, spacecraft components at low speeds.