Components for the Transonic Wind Tunnel ETW in Cologne

Babcock Noell supplied several components for the (European Transonic Wind Tunnel) ETW:
  • the model carriage, a transporter for a load of up to approx. 200 t
  • lock gates with dimensions of 19 and 17 m and a weight of 27 t.
  • The so-called second throat, in which by means of trimming tabs the flow conditions can be optimised within milliseconds, work being done against a flow pressure of 10 t at a temperature of -180° C.
  • The inner casing of the compressor (total weight 88 t) had to be with lowest possible tolerances.


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