In 1897, he built the first Russian wind tunnel with an open test section and developed a method of experimentation using it.

Optical access to the test section for various cameras and light sources is provided through 90 special windows in all walls.

An elevated test section had been under construction since 2009.

The test section cross section area is 6 by 6.5 inches.

The highest speed is reached in the test section.

A second lens is used to image the test section to the viewing screen.

However there were some test sections where 160km/h was allowed before April 2007.

Like a proud parent, Crampton looked at the test section, then laughed.

The assembly is then fixed on the test section of the wind tunnel.

By 2016 the test section will be reformed into the new 29 km long line 1 and opened to the public.