Variable Density Tunnel, National Historic Landmark wind tunnel in Hampton, Virginia, US
The Variable Density Tunnel contains a large steel tank measuring 34.5 feet long and 15 feet in diameter, designed for aircraft model testing.
Built in 1921 at Langley Research Center, this wind tunnel marked the introduction of pressurized testing facilities in American aeronautical research.
The facility influenced the development of military and commercial aircraft designs throughout the early 20th century, including the Douglas DC-3.
Located at coordinates 37.0786, -76.3442, the tunnel remains accessible for viewing within the NASA Langley Research Center grounds.
The tunnel's tank required 85 tons of steel and operated at pressures up to 20 times atmospheric conditions for accurate aerodynamic measurements.
Location: Virginia
Inception: 1921
Architects: Michael Max Munk
GPS coordinates: 37.07860,-76.34420
Latest update: March 6, 2025 01:12
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