R. G. W. is made, the Denver Salt Lake’s Moffat tunnel remains an impressive portal to nowhere. * The three longest railroad tunnels in the U.S. are: 1) the new Cascade tunnel in Washington on ...

The Rotating Cascade Tunnel in Göttingen (RGG), which is operated by the DLR Institute of Propulsion Technology, located in Göttingen, is used for experimental investigations into annular turbine ...

The transonic cascade wind tunnel (TGK) is installed at the Institute of Propulsion ... Due to its excellent accessibility for measurements, the TGK is used to test prototypes of new measurement ...