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NASA Langley's Hypersonic Facilities Complex, 1969. A hypersonic wind tunnel is designed to generate a hypersonic flow field in the working section, thus simulating the typical flow features of this flow regime - including compression shocks and pronounced boundary layer effects, entropy layer and viscous interaction zones and most importantly high total temperatures of the flow.
Part of the UK National Wind Tunnel Facility: CRIACIV Boundary Layer Wind Tunnel - University of Florence [25] Operational 2.44 m × 1.6 m × 10 m (8 ft 0 in × 5 ft 3 in × 32 ft 10 in) Building, bridges, general purpose Italy Closed circuit wind tunnel, T-shaped diffuser, one atmospheric test section (max speed 31 m/s [100 ft/s]).
Ft. McArthur Tunnel Complex: an abandoned World War II network connecting fortifications in San Pedro, CA. [10] The Lawson Adit is a tunnel constructed underneath UC Berkeley into the Berkeley Hills in the early 1900s for student mining research. [11] US Dept. of Defense Tunnel Warfare Center, China Lake [12] [13]
In 1967, Congress granted approval for the construction of Tunnel 9. The facility became operational in 1976 and has since been providing aerodynamic simulation in critical altitude regimes associated with strategic offensive missile systems, advanced defensive interceptor systems, and hypersonic vehicle technologies.
Since then, China has continued to advance its science and technology and is now home to the world’s most powerful hypersonic wind tunnel, the JF-22, which can simulate the conditions in which a ...
Central Pacific Railroad, Clipper Gap Tunnel Central Pacific Transcontinental Railroad, Tunnel 'O' Abandoned 1873 1984 1997 Union Pacific Railroad: Clipper Gap: Placer: CA-86: Big Oak Flat Road Tunnel No. 1 Extant 1937 1991
The facility was designed to provide ground-based simulations of supersonic and hypersonic flight conditions. The combustion air heater can provide total pressures from 200 psia to 2,800 psia (13.6 atm to 190.5 atm) and a total temperatures from 1,200°R to 4,700°R (667 K to 2,611 K).
LUCKNOW, India (Reuters) -Indian officials said on Monday they hoped to free all 40 workers who have been trapped for about 35 hours in a collapsed tunnel in the Himalayan state of Uttarakhand ...